30 January 2016, Volume 47 Issue 1

    

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Focuses & Concerns
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  Advances in functionalization of polyethylene by sulfonation

  XIE Ben, CHEN Peng, GU Qun, ZHOU Yingqiao

  功能材料. 2016, 47(1): 1001-1006. https://doi.org/10.3969/j.issn.1001-9731.2016.01.001

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  As one of the most important functionalization methods, sulfonation was effective in improving chemical polarity, stiffness and thermal stability of polyethylene (PE). In this paper, research advances are reviewed on the structural evolution and performance modification of sulfonated PE as well as the sulfonation mechanisms, based on which the prospective research and application of sulfonated PE are discussed.
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  Preparation of interconnected porous oxide layer on NiTi alloys

  KONG Xiangque, JIN Xuejun, LIU Jiannan

  功能材料. 2016, 47(1): 1007-1011. https://doi.org/10.3969/j.issn.1001-9731.2016.01.002

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  In this research, surface anodic oxidation was conducted on pure NiTi alloys. Influences of this surface treatment on the resulted surface morphology of the oxide layer were investigated using scanning electron microscopy, its composition analysed using X-ray differaction, X-ray photoelectron spectrum, and surface Ni release evaluated using SBF immersison tests.Results show that after anodization in F^--contaning glycol-based electrolytes, a special interconnected porous layer was obtained on equiatomic NiTi. This special layer has a thickness of 5-12 μm and consists mainly of amouphous TiO₂, with trace oxidic or metallic Ni. SBF immersion tests show that this surface has improved corrosion resistance compared with bare NiTi and release of the toxic Ni is significantly supressed. Thus the above anodization treatment is effective to prepare a special interconnected porous layer with low Ni content and improved corrosion resistance, which will be a benefit for its biocompatibility.
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  Effect of pore structure of activated carbon on heavy metal ions adsorption performance

  FAN Mingxia, TONG Shitang

  功能材料. 2016, 47(1): 1012-1016. https://doi.org/10.3969/j.issn.1001-9731.2016.01.003

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  Pore structure controlling technology of activated carbon(AC) was applied. The adsorption properties of Cr(Ⅵ),Pb(Ⅱ) and Cd(Ⅱ) on ACs were investigated systematically. Effect of pore structure of AC on heavy metal ions adsorption performance was explored. Template imprinting method was applied for preparation of mesoporous activated carbons(MACs) with average pore size of 2.23-3.37 nm and mesopore porosity of 45.1%-91.9%, and these MACs were used for static adsorption of Cr(Ⅵ),Pb(Ⅱ) and Cd(Ⅱ) from aqueous solution. Their suitable mesopore sizes matched with diameters of the hydrated ions of three heavy metals, resulting to the increased adsorption efficiency. The influences of technical conditions such as pH value, adsorption temperature and adsorption time were also studied. The results show that favorable pH value of Cr(Ⅵ),Pb(Ⅱ) and Cd(Ⅱ) adsorption are 3.0, 6.0 and 6.0 respectively. The adsorption is an endothermic process. The adsorption kinetic data was found to fit well with a pseudo-second-order rate equation. Removal of Cr(Ⅵ), Pb(Ⅱ) and Cd(Ⅱ) increase with an increase in mesoporosity of MACs, highlighting the importance of mesoporosity in enhancing adsorption efficiency.
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  Preparation and electrochemical properties of Si/Si-Ti alloy nanoparticle composites as anode materials for lithium-ion batteries

  YU Zhihui, KOU Yanna, WANG Xiayan, XIA Dingguo, SU Tingting

  功能材料. 2016, 47(1): 1017-1022. https://doi.org/10.3969/j.issn.1001-9731.2016.01.004

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  A series of porous Si/Si-Ti alloy were prepared by magnesium reduction process with Ti-containing silica molecular sieves (Ti-SiO₂) as the precursor. The morphologies and structures of Si/Si-Ti alloy were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FT-IR).The electrochemical properties of the composites as anode materials for lithium-ion batteries were evaluated by Galvanostatical text. The results show that the effect of volumetric expansion wasrelieved because porous structure provides sufficient buffer space. In addition,the existence of Si-Ti alloy improved the conductivity of the composite materials. The sample achieved remarkable electrochemical performance with a capacity of 801 mAh/g at 420 mA/g after 50 cycles.
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  Preparation and characterization of carboxylated polymer microspheres containing rosin moiety by suspension polymerization

  YU Caili, WANG Fengchang, CAI Yida, CHEN Chuanwei, ZHANG Faai

  功能材料. 2016, 47(1): 1023-1027. https://doi.org/10.3969/j.issn.1001-9731.2016.01.005

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  A carboxylated polymer microsphere [P(HSDM)] containing rosin moiety was obtained by copolymerizing of styrene (St), divinylbenzene (DVB), methacrylic acid (MAA) and a rosin ester (RH), a product via esterification of rosin and 2-hydroxyethyl methacrylate, by suspension polymerization method. The performance of the P(HSDM) was investigated by varying of monomer ratio, reaction temperature and dispersant levle. The structure of the P(HSDM) were characterized by Infrared spectrometer, optical microscope, scanning electron microscope and thermo-gravimetric. The results showed that when mass ratio of m(RH):m(St+MAA):m(DVB) was 1:1.5:0.4 and m(St):m(MAA) was 3:3, gelatin as dispersant with 4wt% (based on all monomer weight), reaction temperature at 80 ℃, the monomers of RH, St, DVB and MAA were copolymerized successfully, polymer microspheres with better spherical shape were formed, and the maximum content of carboxyl groups on the surface of the microsphere was 0.146 mmol/g.
Review & Advance
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  Effects of commission condition on the tribological properties of surface texture: a review

  LUO Jingshuai, XING Zhiguo, WANG Haidou, JIN Guo, CUI Xiufang, TAN Na

  功能材料. 2016, 47(1): 1028-1033. https://doi.org/10.3969/j.issn.1001-9731.2016.01.006

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  Obtaining the surface texture on the parts surface using a process or a variety of techniques was effective to increase the tribological properties. In this paper, the research on the surface texture domestic and overseas were synthesized, the mechanisms of the effects of the commission condition on tribological properties were analysed importantly, such as velocity, loading, lubrication state and the sliding orientation. And the future research hotspots were predicted to provide very important reference value for the design of the surface texture on the parts and the study of the tribological properties in the future.
Reseatch & Development
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  On the thermal conductivity of Cu/diamond composite of diamond particles with tungsten coating

  LI Jianwei, ZHANG Hailong, ZHANG Shaoming, ZHANG Yang, WANG Xitao

  功能材料. 2016, 47(1): 1034-1037. https://doi.org/10.3969/j.issn.1001-9731.2016.01.007

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  Powder sintering method is applied for W coating. And the Cu/diamond (W) composites were fabricated by gas pressure infiltration. Study the effects of different plating temperature on the coating microstructure and thermal conductivity of the composites. The results showed that the diamond with tungsten coating improve the interface bonding and the thermal conductivity of the composites effectively. The thickness of coating increase significantly with the increase of plating temperature. The thermal conductivity of composite increase firstly and decrease subsequently. When the plating parameters are 1 050 ℃ and 15 min, the thickness of coating is about 2 000 nm,and the thermal conductivity of the composite material can reach 670 W/mK.
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  Study on microstructure and mechanical properties of ZrN/TiSiN nanomultilayered films

  ZHENG Wei, LI Wei, MENG Jia, LIU Ping, MA Fengcang, LIU Xinkuan, CHEN Xiaohong, HE Daihua

  功能材料. 2016, 47(1): 1038-1042. https://doi.org/10.3969/j.issn.1001-9731.2016.01.008

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  This paper adopts the method of magnetron sputtering with using Zr target and TiSi composite target to get the successful preparation of different TiSiN layer thickness of ZrN/TiSiN nanometer multilayer films. Using X-ray diffraction (XRD), scanning electron microscope (SEM), high-resolution transmission electron microscopy (HRTEM) and nano indentation tester and other test methods to study the impact of different TiSiN layer thickness on the ZrN/TiSiN nanometer multilayer films of microstructure and mechanical properties. The results showed that with the increase of TiSiN layer thickness the coating is mainly composed of the ZrN face-centered cubic phase, ZrN phase crystallization degree increased before they are reduced and the hardness of coating increased before they are reduced. When TiSiN thickness was 0.7 nm the coating had the highest hardness and elastic modulus (28.73, 301.125 GPa) that far more than ZrN monolayer film hardness. Strengthening effect of ZrN/TiSiN nanometer multilayer films can be made of Alternating stress field and modulus of differential theory to explain.
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  Impact of base oil on the rheological property of ultrafine bentonite grease

  WANG Jing, GUO Xiaochuan, JIANG Mingjun, HE Yan, SONG Hui

  功能材料. 2016, 47(1): 1043-1048. https://doi.org/10.3969/j.issn.1001-9731.2016.01.009

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  The impact of the base oil on the rheological parameters of bentonite greases was researched. These parameters include thixotropy, storage modulus, loss modulus and stress, etc. The method of infrared quantitative was adopted to analyze the influence mechanism. The results show that ultrafine bentonite grease has better thixotropy and higher storage modulus, bentonite greases with naphthenic base oil has higher structural strength, and bentonite has selective absorption of different hydrocarbon.
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  Influence of pretreatment on the structure and properties of microfibrillated celluloses

  GUO Ting, PEI Ying, ZHENG Xuejing, TANG Keyong

  功能材料. 2016, 47(1): 1049-1052. https://doi.org/10.3969/j.issn.1001-9731.2016.01.010

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  In the present paper, microfibrillated cellulose (MFC) was treated by either method of ultrasonic dispersion or mechanical agitation in alkaline conditions, followed by the physical method of high pressure homogenization in 1 200 bar. By means of SEM, FT-IR, XRD and TGA, it was showed that the basic chemical structure and crystalline configuration of MFC was not changed, and alkali treatment was conducive to develop MFC with high crystallinity. After the ultrasonic dispersion, microfibrillated cellulose dispersed more uniformly and easily formed a cellulose crystalline with higher regularity.
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  Fabrication and performance of the flexible generators based on K_0.5Na_0.5NbO₃ piezoelectric nanofibers

  WANG Zhao, HE Jing, PAN Xumin, HE Yahua, HU Yongming

  功能材料. 2016, 47(1): 1053-1055. https://doi.org/10.3969/j.issn.1001-9731.2016.01.011

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  The lead-free piezoelectric K_0.5Na_0.5NbO₃ nanofibers were fabricated on a silicon substrate via electrospinning process. The annealed nanofibers with polycrystalline orthorhombic perovskite structure were approximately 60-80 nm in diameter. Through the packaging and lift-off of the flexible polymer layer, the nanofibers can be directly transferred from the silicon substrate to the flexible substrate. After the deposition of Au electrodes and wire-leading, the flexible piezoelectric generators with different size can be obtained. This device can generate impulsive output voltage due to the coupling of the piezoelectric potential and the Schottky barrier between the electrodes and the nanofibers. By increasing the electrode distance, the output voltage can be increased to approximately 12 V in peak-to-peak value at a distance of 10 mm.
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  Corrosion resistance of electro-deposited solid solution multi-alloy Fe-Co-Ni coatings under seawater

  DUAN Hui, JI Xiulin, HU Biao, DING Wei

  功能材料. 2016, 47(1): 1056-1059. https://doi.org/10.3969/j.issn.1001-9731.2016.01.012

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  Fe-Co-Ni multi-alloy coatings were deposited on Q235 steel substrate in sulfate solution with electro-deposition technology. The effects of deposition temperature, current density and pH value on the corrosion resistance of the coatings under the simulated seawater were investigated. The structure, surface morphology and chemical composition of the electro-deposited coatings were studied by XRD, SEM and EDS. The results shows the multi-alloy coating was composited by 94.92wt% Ni,2.58wt% Co and 1.47wt% Fe with BCC solid solution structure and smooth and dense surface. The corrosion resistance of the multi-alloy coating was researched under seawater using electrochemical method. The results reveal that the Fe-Co-Ni coating with the best corrosion resistant was obtained with the pH value 3.8, current density 6 A/dm² and bath temperature 50 ℃. Moreover, the corrosion resistance of Fe-Co-Ni coating was obviously better than that of 304 stainless steel.
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  Solvatochromism and optical limiting properties of symmetric long conjugated fluorene derivatives

  WANG Jun, SUN Xin, HUANG Jianmin, FENG Yan, WANG Xin

  功能材料. 2016, 47(1): 1060-1065. https://doi.org/10.3969/j.issn.1001-9731.2016.01.013

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  In this paper, three symmetric long conjugated fluorene derivatives (M1-M3) were synthesized by Heck reaction. The structures were characterized by NMR, FT-IR and elemental analysis. The UV-Vis absorption spectra, fluorescence spectra and quantum yields were measured in THF and solvatochromism was studied in different solvents. The nonlinear optical properties of M1-M3 under different input laser powers were measured by Z-scan technique, and the corresponding nonlinear absorption coefficients (β) and two-photon absorption cross sections (σ) were obtained. The results showed M2 and M3 have the better ps optical limiting properties and the optical limiting mechanism was based on the two-photon absorption of molecules.
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  Visible-light photocatalytic hydrogen production over Eosin Y sensitized Pt-TiO₂ nanosheets with preferential (001) facet

  XU Junying, LI Yuexiang, PENG Shaoqin

  功能材料. 2016, 47(1): 1066-1071. https://doi.org/10.3969/j.issn.1001-9731.2016.01.014

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  TiO₂ nanosheets with preferential (001) facets were prepared by a hydrothermal route using tetrabutyl titanate and HF as materials. Pt was loaded on TiO₂ samples by a photodeposition method. A dye-sensitization photocatalyst was prepared by impregnation method with Eosin Y and the platinized TiO₂ samples. The prepared samples were characterized by Scanning electron microscope (SEM), Transmission electron microscope (TEM),X-ray diffractometer (XRD), UV-Vis diffuse reflectance spectra (DRS), Brunauer-Emmett-Teller (BET), Photoluminescence spectra (PL) and Fourier transform-infrared (FT-IR). The experiments show that the volume of HF and Pt loading content have remarkable effects on the rate of photocatalytic hydrogen production at the given concentration of Eosin Y. When the volume of added HF was 3 mL, the activity of the prepared Eosin Y-Pt-TiO₂ nanosheets reaches a maximum which was 2.1 times as high as that of TiO₂ nanoparticles. The high percentage of (001) and surface fluorination of TiO₂ nanosheets can be responsible for the improved photocatalytic activity. When the loading Pt content was only 0.02wt%, the Eosin Y-Pt-TiO₂ nanosheets can also exhibit higher photocatalytic activity of hydrogen production.
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  Synthesis and drug release characterization of redox-responsive dendrimers

  YU Lili, YOU Jing, YAO Lin, LIANG Fei

  功能材料. 2016, 47(1): 1072-1076. https://doi.org/10.3969/j.issn.1001-9731.2016.01.015

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  The dendrimers systems (mPEG-G4.0,mPEG-G(S—S)3.0,mPEG-G(S—S)4.0) was synthesized using ethylene diamine (EDA), methyl acrylate (MA), polyethylene glycol monomethyl ether-1900 (mPEG-1900) and cystamine dihydrochloride as the raw materials. The structure of the polymer was determined by Fourier transform infrared (FT-IR). Besides, the drug carrier capacity and the drug release profile were detected using doxorubicin (DOX) as a model, and so that the characteristics of the dendrimers and redox-responsive behavior was studied. The results showed that the particle diameter of mPEG-G4.0 micelles, mPEG-G(S—S)3.0 micelles and mPEG-G(S—S)4.0 micelles was less than 670 nm, and drug loading of all micelles had good performance. The DOX release rate from micelles was much faster in medium with GSH, which demonstrated the drug release process was redox-responsive.
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  Studies of microstructures and optoelectronic properties of the Ti-doped zinc oxide(TZO) nano-films

  CHEN Zhenying, NIE Peng, LIAO Qingjia, HUANG Wenhua, MENG Yan, XIONG Dingkang, DENG Wen

  功能材料. 2016, 47(1): 1077-1081. https://doi.org/10.3969/j.issn.1001-9731.2016.01.016

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  In order to find the best preparation condition, the Ti-doped zinc oxide (TZO) films were deposited on the common glass substrates with different-heat-preservation-time targets by radio frequency (RF) magnetron sputtering, respectively. The microstructures and optoelectronic properties of the films were tested in details, the results show that all samples are polycrystalline with a hexagonal structure and have a preferred orientation perpendicular to the substrate, the microstructures and the optoelectronic properties of the TZO films were strongly affected by the sintering temperature and the heat-preservation time of the targets. It has been found that the TZO film prepared with the target which was sintered at 1 500 ℃ then preserved for 6 hours has better optoelectronic property in comparison with the others, that is, it has relative larger gain size, higher average optical transmittance of 91.16% with wavelength from 400 to 760 nm, lower resistivity of 1.07×10^-4 Ω·cm, higher carrier concentration and mobility.
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  A study on the performance of the air textured yarn of glass fiber

  LIU Yuanjun, ZHAO Xiaoming, TUO Xiao

  功能材料. 2016, 47(1): 1082-1086. https://doi.org/10.3969/j.issn.1001-9731.2016.01.017

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  In order to study characteristics of the bulk yarn of glass fiber and fabric, the bulk yarn of glass fiber was prepared by independent patent air blow method. Then the infrared spectra, morphological structure, mechanical properties, fixed resin properties, coefficient of thermal conductivity and thermal protective performance of the bulk yarn of glass fiber were analyzed. The results showed that glass fiber dispersed into the bulk yarn of glass fiber was a physical change process by high-speed airflow. The fluffy properties, fixed resin properties and mechanical properties were good, and the coefficient of thermal conductivity was lower than 0.12 W/(m·K). The thermal protective performance of the bulk yarn was more than double than roving, and TPP was 21.62 cal/cm².
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  Aging characteristic test research of asphalt mixture based on the digital speckle correlation method

  WANG Lan, WANG Yu, GONG Ningning, JIA Yongjie

  功能材料. 2016, 47(1): 1087-1092. https://doi.org/10.3969/j.issn.1001-9731.2016.01.018

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  Based on the digital speckle correlation method(DSCM), using the VIC-3D(video image correlate-3D) image processing system, by semi-circular bending test(SCB Test), the images of the SBS modified asphalt mixture and rubber powder (CR) modified asphalt mixture that before and after temperature age are acquired in the whole process from the load to the crack destruction, VIC-3D calculation software was used to calculate the horizontal strain,horizontal strain rate of the semicircle specimen and through load-displacement curve and the fracture energy index to study the aging characteristics of the asphalt mixture.The results show that: the digital speckle correlation method, as a kind of non-contact, non-interference, the whole deformation optical measurement method, can study the aging properties of asphalt mixture very well; in the whole process from the load to the fracture,compared to the non-aged asphalt mixture,the load holding ability and crack resistance of the temperature aged asphalt mixture obviously weakened; the CR modified asphalt mixture after temperature age has better crack resistance than the SBS modified asphalt mixture after temperature age.
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  Investigation and optimization on performance of Ti₂Be₃ material in the low temperature

  LIN Tao, WANG Changhong, HUANG Jiongtong

  功能材料. 2016, 47(1): 1093-1096. https://doi.org/10.3969/j.issn.1001-9731.2016.01.019

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  Using semiconductor thermoelectric system as the research object, we have the output performance and the structure parameter of the thermoelectric module and system tested and simulation analysed through experimental study and numerical simulation methods. The results show that when the slenderness ratio m of the research was 0.5, the output power of the thermocouple was 5 mW; when m was 1.5, the output power was 3.38 mW. In the process of the design on thermoelectric module, considering the effect of long and thin ratio on the thermal conductivity and electrical conductivity was beneficial to realize the maximization of the output power. Which provide application possibility for the solar energy utilization and industrial waste heat utilization and other fields.
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  Research of anti-friction performance of Ni60 alloy coating optimized by multiple high aluminum bronze

  LU Yang, YANG Xiaowei, YANG Xiaotian, XIAO Rongzhen, WANG Pengchun

  功能材料. 2016, 47(1): 1097-1101. https://doi.org/10.3969/j.issn.1001-9731.2016.01.020

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  The composite coatings of nickel-based alloy/high aluminum bronze were prepared with different mass fraction(0%,5%,10%) of high aluminum bronze by supersonic plasma spraying technology on 45^# steel substrate. The phase structures of the coatings were analyzed by XRD, and the microhardness of the coatings was measured. The dry friction behavior between the coatings and 304 stainless steel was researched, and the effect of the addition of high aluminum bronze on the mechanical properties and tribological properties of the composite coatings was investigated. The results showed that the microhardness and the friction coefficient of the coatings descended with the addition of high aluminum bronze.When the mass fraction of the high aluminum bronze reached 10%, the fluctuation of the microhardness tended to stable; Then the friction coefficient of the coatings with 5% high aluminum bronze performed a lower value than 0% high aluminum bronze under low load. With increment of the load, the friction coefficient increased slowly; when the load increased to 200 N, the friction coefficients of the three kinds of coatings were approximately same, and remained about 0.25, and the anti-friction of the high aluminum bronze was no longer apparent. The wear loss of the coatings under low load confirmed that the coating with high aluminum bronze had lower wear loss under low load.But when the load increased to 200 N,the wear loss of the coatings with 5% high aluminum bronze had lower than the other two coatings,and the overall friction and wear performance of the coating was perfect.
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  Dynamic recrystallization behavior and microstructure evolution of Cu-Cr-Zr-Y alloy

  CHAI Zhe, ZHANG Yi, LI Ruiqing, XU Qianqian, TIAN Baohong, LIU Yong, LIU Ping

  功能材料. 2016, 47(1): 1102-1105. https://doi.org/10.3969/j.issn.1001-9731.2016.01.021

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  The flow stress behavior of Cu-0.4Cr-0.15Zr-0.04Y alloy during hot compression was studied by isothermal compression test at a Gleeble-1500D thermal-mechanical simulator at the temperature from 650 to 850 ℃ and at the strain rate from 0.001 to 10 s^-1 under maximum strain of 50%. The relationship among the flow stress, strain rates and deformation temperatures was studied. The microstructure of the experimental alloy was studied in the process of hot-compression. The results show that the flow stress is controlled by both strain rate and deforming temperature, the flow stress decreases with the increase of deforming temperature, while increases with the increase of strain rate. Stress index n, stress scale parameterα, structural factor A, hot deformation activation energy Q, and constitutive equation were derived from the correlativity of flow stress, strain rate and temperature. Microstructure of the alloy strongly depends on deformation temperature.
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  Effects of filler on high temperature and low temperature performance of CRMA mastic

  XU Bo, LIU Yunxin, WANG Ying

  功能材料. 2016, 47(1): 1106-1109. https://doi.org/10.3969/j.issn.1001-9731.2016.01.22

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  In order to study the effects of fillers on high temperature and low temperature Properties of crumb rubber modified asphalt (CRMA) Mastic, the mineral powder and cement were selected as fillers, and the CRMA mastics were produced at different filler to rubber asphalt ratios (mineral powder F/A:0.25, 0.4, 0.6 and 0.8; cement F/A: 0.4 and 0.6; on a weight basis) according to parameters in laboratory. Then the high temperature properties and low temperature properties were studied by Creep recovery test and Bending beam creep test. The tests results demonstrate that adding mineral powder and cement into CRMA promotes better high temperature properties. With the increase of F/A, high temperature properties of CRMA Mastic raise gradually, and mineral powder makes high temperature properties of CRMA Mastic improve significantly comparing with cement. With the increase of F/A, low temperature properties of CRMA Mastic decrease gradually. At test temperatures of -12 and -18 ℃, the low-temperature properties of CRMA Mastic has a greater decrease. In order to balance high temperature performance and low temperature performance, the best mineral powder F/A should be from 0.4 to 0.6.
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  Research on bond behavior between PVA fiber reinforced cementitious composites and rebar

  LIU Shuguang, DENG Yihan, ZHANG Ju, WANG Yuqing, CHENG Fang

  功能材料. 2016, 47(1): 1110-1116. https://doi.org/10.3969/j.issn.1001-9731.2016.01.023

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  The bond behavior between PVA fiber reinforced cementitious composites and rebar is precondition and guarantee for the safe, stable and durable work. By centre pull-out test, these specimen were tested to investigate the influencing factors and the constitutive relation problems in the bond-slip study between PVA fiber reinforced cementitious composites and rebar, and the bond-slip curves were obtained for each specimen. By stress analysis of the whole process from loading to failure and characteristics analysis of fiber in elementary materials. Based on the existing bond-slip constitutive models, one new bond-slip constitutive model was proposed according to the theory of vibration damping. The newly built bond-slip constitutive model was compared with the test results and existing bond-slip models. It can well reflect the whole mechanical process between PVA fiber reinforced cementitious composites and rebar, which is well in agreement with the test results. These tests and experiments which not only provide a good reference and basis for non-linear finite element analysis of PVA fiber reinforced cementitious composites and rebar property, but also have provided the bases for respective revision of relevant codes.
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  Preparation and As⁵⁺ adsorption performance of mesoporous alumina

  HAN Caiyun, CHEN Huirong, ZHANG Liming, SHAN Xin, ZHU Wenjie, LUO Yongming

  功能材料. 2016, 47(1): 1117-1121. https://doi.org/10.3969/j.issn.1001-9731.2016.01.024

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  Mesoporous alumina was prepared by the method of sol-gel under room temperature via nonionic surfactant pluronic P123 and aluminium tri-isopropoxide as the template and aluminium source, respectively. And the obtained mesoporous alumina was employed to remove As⁵⁺ from aqueous solution. Various parameters such as calcination temperature of mesoporous alumina, initial pH of As⁵⁺ solution, contact time, adsorbent dosage and adsorption temperature were investigated. It could be seen that As⁵⁺ uptake decreased with the increased in calcination temperature of mesoporous alumina. The adsorption performance was influenced by the initial pH, and the maximum adsorption capacity was reached at pH=4.5, which calculate from Langmuir isotherm was 51.02 mg/g.
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  Luminescence and mechanical properties of supersonic plasma spray Cu-14Al-X/phosphorescence composite coatings

  LV Ye, LI Wensheng, HE Ling, YANG Xiaotian, DU Lianchao, WANG Fuquan

  功能材料. 2016, 47(1): 1122-1126. https://doi.org/10.3969/j.issn.1001-9731.2016.01.025

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  Cu-14Al-X/SrAl₂O₄: Eu²⁺, Dy³⁺ phosphorescence composite coating were prepared on 45^# carbon steel substrate by using different spraying parameters (the flow rate of secondary gas H₂) with supersonic plasma spraying. The phase, microstructures, and luminescence properties were investigated by XRD, SEM, EDS and fluorescent photometer technologies. The results show that all three coatings are mainly composed of Al_0.5Fe_0.5, AlFe₃, Cu₉Al₄, SrAl₂O₄ phase with slightly SrAl₄O₇ and SrFe₂O₄ phase; when the flow rate of H₂ increases from 1 L/min to 16 L/min, significant increase was observed in terms of the deposition rate of the spraying material, especially the deposition rate of phosphorescence particles, while the improvement is also observed in luminescence intensity, bonding strength, micro-hardness and density.
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  Solidification of Fe₃O₄ nanofluid effected by magnetic field

  LEI Shijun, CHEN Ying, JIA Lisi, LIN Gang, MO Songping, YIN Tao

  功能材料. 2016, 47(1): 1127-1130. https://doi.org/10.3969/j.issn.1001-9731.2016.01.026

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  Nanofluids would get aggregation during the process of solidification, we proved that magnetic field would change the interaction between nanoparticles and solid/liquid interface by theory analysis. We also found the range of magnetic intensity that increase the dispersion stability of Fe₃O₄ nanofluid during solidification. We chose Fe₃O₄/Parraffin nanofluid in the experiment, measure the segregation area, darkness to improve the effect of magnetic field during nanofluid solidification. The result showed that nanoparticles dispersive best under the magnetic intensity of 40 mT, the disperse stability also best after melting
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  Study on the microstructure and wear resistance of in-situ Al₃Ni particle reinforced A356 alloy matrix composites

  YANG Tao, CHEN Gang, SHI Jinghao, ZHAO Yutao, SHAO Jingbo, XIAO Jie, HUA Cheng

  功能材料. 2016, 47(1): 1131-1135. https://doi.org/10.3969/j.issn.1001-9731.2016.01.027

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  In the present paper, the microstructure and wear resistance of in-situ Al₃Ni particle reinforced A356 alloy matrix composites fabricated from Al-Ni₂O₃ system by melt reaction method have been investigated. The results indicate that the Al₃Ni particles in 5wt% Al₃Ni/A356 composites are dot-like and small. The Al₃Ni particles in 10wt% Al₃Ni/A356 composites are block-shaped and strip-shaped, while those in 20wt% Al₃Ni/A356 composites are ball-shape. The size of Al₃Ni particle in 5wt% Al₃Ni/A356 composites is the smallest among all the samples. The wear rate of composites is decreasing with the decreasing mass fraction of Al₃Ni phase, and wear rates of all composites are lower than that of A356 alloy. The wear mechanisms of composites are abrasive wear and delamination wear.
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  The adsorption and diffusion of single atoms around island in Nb-Si-N coating deposit process: a first principles calculation

  REN Yuan, LIU Xuejie, LI Zhi

  功能材料. 2016, 47(1): 1136-1139. https://doi.org/10.3969/j.issn.1001-9731.2016.01.028

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  The separation and gathering of Nb, Si and N atom around come to NbN grain in deposit process of Nb-Si-N nano composite films was discussed. The adsorption energy and diffusion energy of Nb, Si and N atom around 2N2Nb island on NbN (001) surface were studied with the first principle method which is based on density functional theory (DFT). The results indicate that the most energetic site for the Nb, Si, N atoms adsorbed on NbN (001) surface around 2N2Nb island was the P3, P1, P2, respectively. The adsorption energies of the Nb, Si, N atoms on NbN (001) surface around 2N2Nb island were 7.3067, 5.3521 and 6.7113 eV, respectively. The diffusion energies of the Nb, Si, N atoms around 2N2Nb island were 2.62, 1.35 and 5.094 eV, respectively. The lower adsorption and diffusion energy of active elements Si atoms could promoted the spread of Nb and N atoms during deposition. The NbN grain was separated by Si atom diffusion around 2N2Nb island easily. The grain was refining, that was prevent growing by Si atom during deposition.
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  Effects of P doping on oxygen permeability and structure stability of Ba(Co_0.88Nb_0.12)_(1-x)P_xO_3-δ membranes

  YANG Gonghui, DING Weizhong, WU Chengzhang, LIU Yinhe, ZHANG Xingxing

  功能材料. 2016, 47(1): 1140-1144. https://doi.org/10.3969/j.issn.1001-9731.2016.01.029

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  Ba(Co_0.88Nb_0.12)_(1-x)P_xO_3-δ (x=0, 0.01, 0.03, 0.05 denoted as BCN, BCNP_0.01, BCNP_0.03, BCNP_0.05) membranes were synthesized through conventional solid-phase reaction method. Study the effects of P doping on oxygen permeability and stability of the material. When operated at 850 ℃, the BCN membrane exhibited a poor oxygen permeation stability, the oxygen permeation rate of BCN suffered a great degradation, XRD results showed that some hexagonal phase was generated in the material. Although the oxygen permeability decreased after P doped, the phase stability has been improved to some extent. BCNP_0.03 long-term oxygen flux reached 1.5 mL/(cm²·min) at 850 ℃ under Air/He gradient. XRD, TPD and TG-DSC results indicated that the desorption of lattice oxygen has been suppressed by P doping, the structure stability has been improved as well.
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  Composition of super-stable organic photoconductive dispersion and high performance single-layered device

  LI Yunmeng, WANG Shirong, LI Xianggao, XIAO Yin

  功能材料. 2016, 47(1): 1145-1152. https://doi.org/10.3969/j.issn.1001-9731.2016.01.030

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  Positive single-layered device is the research hotspot in the field of laser organic photoreceptor because of its high performance. The aggregation of Y-TiOPc, that occurs due to the interaction of film-forming resin, charge-transport molecules and charge-generation material particles, leads to performance deterioration of the device. In this paper, poly(acrylamide-co-styrene)(PSAM), polystyrene(PS), polyvinyl pyrrolidone(PVP) and stearamide(SR) were used for the surface treatment of Y-TiOPc in dichloroethane, respectively. And then the Y-TiOPc dispersion was mixed with the solution of polycarbonate in dichloroethane containing hole-transport materials and electron-transport materials to obtain a functional suspension. Particle size, ξ potential, transmittance, reflectance, and roughness were determined to investigate the stability of the dispersion. The results indicated that PSAM@Y-TiOPc particles could be well dispered in dichloroethane. And the positive single-layered device exhibited excellent photoconductivity, V₀=656.72 V, E_1/2=0.16 μJ/cm², R_d=29.10 V/s, V_r=71.47 V.
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  Effect of ultrasonic treatment on interfacial properties of polysulfonamide fiber at room temperature

  PENG Haokai, ZHENG Guo, ZHOU Cun, SUN Yu

  功能材料. 2016, 47(1): 1153-1158. https://doi.org/10.3969/j.issn.1001-9731.2016.01.031

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  In order to improve the wettability and the interfacial bonding performance of the polysulfonamide (PSA) fiber, the surface of PSA fiber was modified by ultrasonic at room temperature. The wettability, interfacial shear strength (IFSS), breaking strength and friction performance of fiber before and after surface modification were analyzed. The water absorption and single fiber pull-out method were used to determine the wettability and the interfacial bonding performance of PSA fiber. The surface morphology and chemical composition of fiber were evaluated by field emission scanning electron microscopy (FESEM) and X-ray photoelectron spectrometer (XPS). The results showed that after ultrasonic treatment, the water absorption time drops from >400 s to about 13 s, and the wettability of the PSA fiber increases sharply, and with the increase of processing time the wettability of PSA fiber was better. The interfacial bonding performance of PSA fiber to epoxy resin was greatly improved, and the IFSS value was increased by 44.0%. The friction performance was improved; the oxygen element and nitrogen element are increased by 30.2% and 18.3%, respectively; polar groups on PSA fiber surface are increased. However, the breaking strength of PSA fiber drops largely at a long-time ultrasonic treatment, and the optimum treatment time was 80 min.
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  Effects of yttrium additions on corrosion behavior of Zr₅₆Co₂₈Al₁₆ bulk metallic glasses in simulated body fluid

  LI Ruiyang, YUAN Zizhou, KANG Jian, ZHANG Xiangyun

  功能材料. 2016, 47(1): 1159-1162. https://doi.org/10.3969/j.issn.1001-9731.2016.01.032

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  Ni-and Cu-free (Zr₅₆Co₂₈Al₁₆)_100-xY_x(x=0, 1, 2, 4) bulk metallic glasses (BMGs) were successfully prepared by water-cooling copper mold technique. We have done detailed study about the effects of yttrium addition on corrosion behavior through X-ray diffraction (XRD), electrochemical workstation, scanning electron microscope(SEM) and X-ray photoelectron spectroscopy(XPS). The results indicated: moderate amount of yttrium addition can enhance the corrosion resistance of Zr-Co-Al-Y remarkably. The passive film is rich in Zr⁴⁺ and Al³⁺, poor of PO^3-₄, which is responsible for the enhanced corrosion. Much of adding deteriorated the corrosion resistance of Zr-Co-Al-Y because of the precipitation of crystal phase.
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  Research of fracture mechanism and defects of MWCNTs by wet ball milling

  ZHANG Wenzhong, CAI Xiaolan, HU Cui, ZHOU Lei, WANG Ziyang, PENG Gang, GUO Li, ZHU Wei

  功能材料. 2016, 47(1): 1163-1168. https://doi.org/10.3969/j.issn.1001-9731.2016.01.033

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  The multi-walled carbon nanotubes (MWCNTs) were processed by wet ball milling for 0.5 and 1.0 h at a rotational speed 800/1 000 r/min. The structural morphology, fracture mechanism and defects of MWCNTs were analyzed by laser particle analyzer, XRD, TEM, TG-DTA and Raman spectrum. The results showed that, after wet ball milled for 0.5 and 1.0 h. The MWCNTs are quickly cut off, and the fracture of MWCNTs shape like a U letter, and that main structure were not damaged. At the same time, amorphous carbon content increased by 2.2% and 1.8% respectively. Fracture mechanism of wet ball milling of MWCNTs: MWCNTs obtained axial compression buckling deformation due to grinding balls of high-speed collision produced huge pressure on the surface, performance to the forced area of MWCNTs appeared as sunken, bend, kink and breaking. The root reason in microstructure is that when the additional pressure on carbon nanotubes exceeds the limit point, the bond angle of C—C reduced to release energy and keep the balance of the whole system.
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  Sintering time effects on the crystal structure and micro-structure of Sr₂FeMoO₆

  HU Yanchun, CUI Yawen, GUO Xingxing, LI Wanwan, LI Jinlan

  功能材料. 2016, 47(1): 1169-1171. https://doi.org/10.3969/j.issn.1001-9731.2016.01.034

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  Samples of Sr₂FeMoO₆ are prepared by standard solid-state reaction. Samples are labeled with 1,2 and 3^# according to different sintering time. X-ray powder diffraction analysis shows that the increase of sintering time enhances the crystalline and the cation order. The cation order of 1,2 and 3^# is 90.0(2)%, 94.0(5)%, and 95.3(4)%, respectively. By measuring the Scanning electron microscope, the micro-structure is analyzed. The size of crystal grain expands and the holes decrease with the increasing sintering time. The average size of crystal grain for 1,2 and 3^# is 0.97, 1.12, 1.58 μm respectively. Rational sintering time is an effective method for high performance of Sr₂FeMoO₆ material.
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  Numerical simulation for effective permittivity of two-phase composites

  QU Baolong, WANG Lifang

  功能材料. 2016, 47(1): 1172-1176. https://doi.org/10.3969/j.issn.1001-9731.2016.01.035

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  To precisely calculate the effective permittivity of composites, with the random distribution model, base on the electricity constitutive equation, the volumetrically weighted average method (VWAM) was designed and realized for the calculation of the effective permittivity of two-phase composites. The results show that, the numerial calculation results of the designed algorithm has a high stability. The numerical results coincide with theoretical and experimental results when the permittivity ratio of two-phase was less than 10. When the ratio was more than 10, the designed algorithm was suitable for the situation that the volume fraction of the high permittivity phase was higher. The research method will suitable for the calculation of effective electromagnetic parameters for the multiphase composites. The research results provide the reference for composites design.
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  Study on the high temperature oxidation resistance of Ni-SiC coatings

  XIA Fafeng, HE Yanan, ZHU Yongyong, MA Chunyang

  功能材料. 2016, 47(1): 1177-1179. https://doi.org/10.3969/j.issn.1001-9731.2016.01.036

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  Ni-SiC coatings were prepared using an electro-brush plating method. The surface morphology and high temperature oxidation properties of Ni-SiC coatings were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicate that the average particle size of the Ni-SiC coating is approximately 0.5 μm. The high temperature oxidation experiments present that the oxidation of Ni-SiC coating is significantly less than that of nickel coating, which illustrates the oxidation resistance of Ni-SiC coating is excellent. In addition, there are a lot of fine particles on the surface of the Ni-SiC coating, and the distribution of particles is uniform, there is no fusion between the particles. The peak of NiO is lower and that of Ni phase is higher in XRD patterns.
Process & Technology
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  FeSiAl magnetic powder prepared with strip cast and its properties researching

  YU Haichen, XU Linhao, ZHANG Hongping, ZHAO Dongliang, XIE Zhongwei, DU Zhaofu

  功能材料. 2016, 47(1): 1180-1182. https://doi.org/10.3969/j.issn.1001-9731.2016.01.037

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  In this article, the organization structure and magnetic properties of FeSiAl powder that prepared by scrip cast are researched, we also researched it’s property of magnetic powder core, and then, comparing it with FeSiAl powder prepared by ingot cast. It was found that magnetic powder have smaller grain size, higher saturation magnetization and better properties made by strip than that by ingot cast. Also, it’s magnetic powder core have better properties.
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  Investigation of the synthesis and characterization of Ni-Zn ferrite prepared by sodium jarosite residue

  TAO Changyuan, ZENG Qiang, LIU Zuohua, DU Jun, FAN Xing, LIU Renlong

  功能材料. 2016, 47(1): 1183-1185. https://doi.org/10.3969/j.issn.1001-9731.2016.01.038

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  The Ni-Zn ferrite was synthesized with sodium jarosite residue through co-precipitation method. The preparation of Ni-Zn ferrite by co-precipitation of iron, nickel and zinc (provided by nickel sulfate and zinc sulfate) with n-butylamine at room temperature was reported. SEM, XRD and FT-IR etc technologies were adopted to investigate properties of the synthesized samples in detail. And, the results of hysteresis loops showed that the specific saturation magnetization, specific remanence and coercovity of the Ni-Zn ferrite were 9.04, 0.65 A·m²/kg and 2.47 kA/m, respectively, possessing characters of low specific remanent magnetization and coercivity of soft magnetic materials apparently.
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  Template-free synthesis and characterization of mesoporous NiAl₁₀O₁₆ nano powder

  SHANG Xingfu, WANG Xueguang, ZOU Xiujing, DING Weizhong, LU Xionggang

  功能材料. 2016, 47(1): 1186-1190. https://doi.org/10.3969/j.issn.1001-9731.2016.01.039

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  The nano-sized high-area NiAl₁₀O₁₆ powders were prepared by the hydrolysis of aluminum nitrate and nickel nitrate aqueous solution with ammonium carbonate solution without templates or organic surfactants. The effects of calcination temperature on the surface area and nickel species of the mesoporous NiAl₁₀O₁₆ were invested. The results of TG-DSC, XRD, SEM, TEM and N₂ adsorption and desorption demonstrate that the mesoporous NiAl₁₀O₁₆ nano-sized powders exhibit a wormhole-like mesoporous structure with large specific surface area up to 123-402 m²/g, the average pore size of 2.9-6.6 nm, pore volume of 0.20-0.29 cm³/g. The surface areas of the samples decrease and pore size increase with the increase of calcination temperature. The nickel species of surface nickel aluminate and skeleton nickel aluminate in the samples can meet the different needs for various catalytic reactions.
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  Effect of low temperature treatment on the flexural property of birch wood

  ZHAO Liyuan, JIANG Jinghui, LV Jianxiong, ZHANG Shuangbao, YU Zhengzheng

  功能材料. 2016, 47(1): 1191-1194. https://doi.org/10.3969/j.issn.1001-9731.2016.01.040

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  The modulus of elasticity (MOE) and modulus of rupture (MOR) of water-saturated and green wood specimens of birch (Betula platyphylla) wood were examined before and after the low temperature treatments at -20, -70, -100, -160, and -196 ℃ for 48 h. The results showed that MOE and MOR increased comparing to the untreated specimens after the low temperature treatment. The largest increases in MOE of water-saturated and green wood specimens were 7.4% and 4.6%, while 7.4% and 6.8% in MOR, respectively. However, the increasing effect of low temperature treatment on MOE and MOR of wood specimens were not significant at any temperature level. At the same time, no significant difference was observed between different temperatures. The ductility ratio increased after the low temperature treatment, which improved the deformation ability of wood specimens. The resistance ability of wood to low temperatures was better than that of the concrete which strength declined after the low temperature effect.
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  Studies on the preparation of CoFe₂O₄ magnetostrictive materials by sol-gel method using spent Li-ion batteries

  XI Guoxi, XU Huidao, XI Yuebin, ZHANG Wen, WANG Lu

  功能材料. 2016, 47(1): 1195-1198. https://doi.org/10.3969/j.issn.1001-9731.2016.01.041

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  Cobalt ferrites magnetostrictive materials were synthesized by sol-gel method using spent Li-ion batteries as raw materials. Has discussed the effect for crystal structure, grain size,morphology and magnetostriction of cobalt ferrite with the calcining temperature and calcining time of precursor.The proper calcining temperature of precursor were investigated by TG,their structures and grain size were represented using XRD and magnetostrictive measurement instrument were used to test magnetostriction.The research results show that the proper preparation condition was calcining under 800 ℃ for 3 h,the denfity (%) was 82% and the max magnetostriction was -1.012×10^-4 at the proper condition.
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  Preparation and properties research of MCPCM/PS thermal storage composite materials

  CUI Jinfeng, LI Shuhui, ZHANG Pengzhong, BAO Xuemei, MU Bo, LI Minrui, YANG Baoping, GUO Junhong

  功能材料. 2016, 47(1): 1199-1202. https://doi.org/10.3969/j.issn.1001-9731.2016.01.042

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  This paper synthesized the MCPCM/PS thermal storage composite materials through bulk polymerization method using styrene, azodiisobutyronitrile, MCPCM as raw material. It also investigated the influences the mass fraction of microcapsules on the thermodynamic properties and the mechanical properties of polystyrene matrix. The results showed that, MCPCM makes the polystyrene matrix with the latent heat, with the increase of content of MCPCM, the latent heat increased, the thermal conductivity decreases, the heat transfer rate was slow, the glass transition temperature (T_g) decrease, the fracture strength decreased, the elongation at break increased, when MCPCM was 25 (wt)%, the phase transition temperature was 25-28 ℃, latent heat of phase transformation was 31.8 J/g, heat conduction coefficient was 0.0210 W/(m·K), T_g=59.13 C.
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  Activated carbon with silver control release and antibacterial behavior by low temperature hydrothermal method

  KONG Xiangqian, DOU Caixia, CHAI Yuantao, LI Shouwang, LI Qiuyan, LIU Shouxin

  功能材料. 2016, 47(1): 1203-1206. https://doi.org/10.3969/j.issn.1001-9731.2016.01.043

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  Silver–loaded activated carbons (Ag/AC) were prepared by low temperature hydrothermal carbonization method, Using E.coli as the experimental strains, investigates the antibacterial properties and anti silver loss of different silver content. X-ray diffraction (XRD), scanning electron microscopy and N₂ sorption were used to characterize the Ag/AC. The results showed that the content of the silver had no influence on the graphite crystallite structure of the Ag/AC. With the increase of the sliver content, the particle size of the silver doped AC became larger, while the surface area, pore volume and pore size of the carbons decreased. Meanwhile, the antibacterial activity improved as the increase of the sliver content, and the loss of the silver content had not a significant change, thus the performance of silver leaching resistance increased. According to the analysis of the antibacterial experiments, the sample Ag/AC₃ with the low silver content of 1.5430wt% and high surface area of 813.3548 m²/g exhibited the high antibacterial activity, which can thoroughly kill the E. coil (10⁷ CFU/mL) in 100 min. Furthermore, the loss percent of the silver was as low as 2.9% after 9 days, which indicated high antibacterial activity and silver leaching resistance.
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  The influence of drying control chemistry additives on morphology and property of silica aerogel films

  CHEN Gaoyuan, WEI Wei, DING Dangren, ZONG Sekai, ZHANG Ming, XIE Jimin

  功能材料. 2016, 47(1): 1207-1212. https://doi.org/10.3969/j.issn.1001-9731.2016.01.044

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  Smooth silica aerogel thin films with high transmittance have been prepared rapidly with tetraethyl orthosilicate (TEOS) as raw materials, ethylene glycol monomethyl ether (EGME) as solvent, ammonium fluoride as catalyst, formamide (FORM) et al. as drying control chemical additive (DCCA) by dip-coating. The structure and properties of the resulting sample was characterized by Fourier transform infrared spectroscopy (FT-IR), small-angel X-ray diffraction (SAXRD), field emission scanning electron microscope (FESEM), atomic force microscope (AFM) and nitrogen adsorption desorption analysis. The optical performance of the samples was studied with ultraviolet-visible spectrophotometer (UV-Vis).It was found that: the silica aerogel film prepared possess a high specific surface area of 890.9 m²/g, pore diameter distribution was about 22.6 nm, pore size distribution was about 0.69 cm³/g, the transmittance in the interval 400-800 nm can reach 95.71%. This style of uniform, smooth and dense aerogel thin film is an ideal optical anti-reflection film.
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  Preparation and characterization of formaldehyde foam carbon for photocatalytic degradation

  HUANG Baoxuan, ZHANG Hongqing, MENG Zhendong, FENG Xi, LIU Shouxin

  功能材料. 2016, 47(1): 1213-1217. https://doi.org/10.3969/j.issn.1001-9731.2016.01.045

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  Polyurethane foam carbon with developed porous structures were synthesized from polyurethane as skeleton, adding granular activated carbon during molding process, followed by carbonization. The composites with high photocatalytic properties were further prepared using polyurethane foam carbon as substrate, TiO₂ as load. Scanning electron microscopy was used to observe the surface morphology; nitrogen adsorption-desorption isotherms was used to test their pore structures; X-ray diffraction was used to analysis the crystal structure of different products while thermal analysis to analysis of thermal decomposition of polyurethane skeleton process. Using formaldehyde gas as model, to evaluate photocatalytic degradation properties of CF/AC_n-t composites under UV light irradiation. The results revealed: CF/AC_n-t composites exhibited high photocatalysis degradation properties which mainly derived from synergy of adsorption and degradation, when amount of activated carbon increased to 35% with load of TiO₂ was 2%, The highest photocatalysis-activity with the formaldehyde gas degradation of 85.3% can be achieved.
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  Preparation and properties of RE multiple boride Ce_1-xNd_xB₆

  Gerilemandahu, BAO Lihong, O. Tegus

  功能材料. 2016, 47(1): 1218-1221. https://doi.org/10.3969/j.issn.1001-9731.2016.01.046

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  In present work,ternary Ce_1-xNd_xB₆ powder has been successfully synthesized by a solid-state reaction of CeO₂ and Nd₂O₃ with NaBH₄ at a reaction temperature of 1 180 ℃. The effects of Nd doping content on the phase composition, microstructure and optical absorption properties of CeB₆ were investigated. It was found that all the synthesized samples are composed of a single-phase submicron crystal and the Nd element has been randomly doped into the lattice of CeB₆. The optical absorption results show that wavelength of transmission light increase from 618 nm to 624 nm with increasing the Nd doping content, indicating redshift of wavelength. Magnetic measurements results indicate that the magnetic phase transition from antiferromagnetism to paramagnetism of CeB₆ takes place at about 2.36 K.
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  The preparations andsoft magnetic properties of Fe_73.4Cu₁Nb₃Si_13.5B₉Al_0.1 nanocrystalline alloy

  XIE Wenshuo, ZHU Zhenghou

  功能材料. 2016, 47(1): 1222-1225. https://doi.org/10.3969/j.issn.1001-9731.2016.01.047

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  Fe_73.4Cu₁Nb₃Si_13.5B₉Al_0.1 amorphous alloy strip was prepared at first,then the effects of Al on it are studied. Research shows that trace amounts of Al reduces the fluidity of Fe_73.4Cu₁Nb₃Si_13.5B₉Al_0.1 master alloy; Trace amounts of Al promote the grain size of Fe_73.4Cu₁Nb₃Si_13.5B₉Al_0.1 when it undergoes crystallization heat treatment and reducing internal stress anisotropy of amorphous alloy,thereby improving the value of μ_e above 100 kHz of Fe_73.4Cu₁Nb₃Si_13.5B₉Al_0.1 nanocrystalline alloy after crystallization heat treatment and at the same time also significantly decreased the crystallization temperature to get best magnetic properties; Al atoms are rich in alpha-Fe grains and clusters which are rich in Cu and are likely to form the Fe₃Al after crystallization heat treatment;The best crystallization heat treatment technology of Fe_73.4Cu₁Nb₃Si_13.5B₉Al_0.1 core is to keep it at 545 ℃ for one hour,the values of μ_e are 33 785,21 551,9 884,5 444 in 1,10,100 and 200 kHz.
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  Prediction on the Al₂O₃ contents in Ni-Al₂O₃ coatings by using BP neural network

  WANG Jindong, ZHAO Yan, GAO Yuanyuan, CAO Yang, XIA Fafeng

  功能材料. 2016, 47(1): 1226-1228. https://doi.org/10.3969/j.issn.1001-9731.2016.01.048

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  Ni-Al₂O₃ coatings were prepared by ultrasonic-electrodeposition method on the surface of A3 steel, and the particle contents of Ni-Al₂O₃ coatings were predicted by BP neural network. The microsturctures of Ni-Al₂O₃ coatings were observed by using TEM. The results indicate that the schematic of the BP model is 3×8×1, and the fitting similarity is 0.9991. The maximal and minimal relatives of this model are 1.71% and 0.74%, respectively. TEM presents that the microstructure of Ni-Al₂O₃ coatings, which deposited at Al₂O₃ particle concentration of 9 g/L, current density of 3 A/dm² and temperature of 40 ℃, has a fine structure and the average particle size is approximately 20 nm.
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  The influence of the supporting materials on the test results of asphalt combustibility performance

  LIAO Xuejiao, YAN Lei, DONG Ruikun

  功能材料. 2016, 47(1): 1229-1233. https://doi.org/10.3969/j.issn.1001-9731.2016.01.049

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  Three types of supporting materials, such as glass wool, cotton and polyester felt, were selected to produce the samples of asphalt and flame retardant asphalt. Ignition time, burning time and the limit oxygen index (LOI) were tested by digital oxygen index instrument. The influence of the supporting materials on the combustibility performance of asphalt and flame retardant asphalt were discussed. The experiment results indicated that the LOI of asphalt and flame retardant asphalt samples were different due to the differences of supporting materials. Glass wool was best suited for producing the samples of asphalt and flame retardant asphalt among glass wool, cotton and polyester felt.
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  Preparation and properties of solvent-free fluorinated polyurethane-polyacrylate emulsions and films

  FU Jianping, LAI Xiaojuan, LI Xiaorui, ZHANG Dannian, MU Ruihua

  功能材料. 2016, 47(1): 1234-1238. https://doi.org/10.3969/j.issn.1001-9731.2016.01.050

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  A core-shell type solvent-free fluorinated polyurethane-acrylate hybrid emulsion was synthesized by using polyurethane(PU) as seed of emulsion polymerization and aliphatic diamine sulphonate (AAS) as post chain extender, which served as shell phase in the hybrid emulsion mentioned above, with the core phase consisting of 1H,1H,2H,2H-perfluorooctyl acrylate (FA), methyl methacrylate (MMA), butyl acrylate (BA) as free radical polymerization monomer. The influence of the amount of FA and AAS on properties of emulsion and the films were discussed. The structure of films are characterized by FT-IR, XPS and XRD. The microstructure and morphology of the emulsion particles are investigated by TEM. The surface property of the film is characterized by contact angle, water absorption and AFM. The results showed that the latex particles exhibit core-shell structure, with polyacrylate (PA) for the core phase, PU for shell phase. The hydrophobility of films has been greatly improved by the introduction of FA. The self-emulsible ability of polyurethane-polyacrylate and stability of emulsion can be improved by the introduction of AAS.
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  Preparation and application of bifunctional carnauba wax latexes bearing antimicrobial activity and water vapor resistance properties

  ZHANG Dan, YU Guanghua, XIAO Huining, DONG Cuihua, LONG Zhu

  功能材料. 2016, 47(1): 1239-1245. https://doi.org/10.3969/j.issn.1001-9731.2016.01.051

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  The guanidine-based antimicrobial polymers were grafted onto the surface of carnauba wax latex particles. N-(3-Dimethylaminopropyl)-N’-ethylcarbodiimide hydrochloride (EDC)/N-Hydroxysuccinimide(NHS) was used as a coupling reagent to introduce the covalent bonding to ensure sufficient binding force. The resulting novel carnauba wax latexes were utilized as a green dual-functional paper additive, which improved both water-vapor resistance and antimicrobial activities of the paper.
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  Synthesis of organically hybridized Zn prepared by mechanical milling and the degradation of methyl orange

  HOU Chen, WANG Shulin, ZHENG Jun, LI Shengjuan, LI Laiqiang, LU Yuwen, HUANG Yayun

  功能材料. 2016, 47(1): 1246-1249. https://doi.org/10.3969/j.issn.1001-9731.2016.01.052

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  The ultrafine Zn particles prepared by the roller vibration milling were organically hybridized successfully by using TEOS. The as-prepared samples were characterized by XRD, TEM and FT-IR, and its activity to degrade methyl orange was evaluated by comparing with unmodified Zn particles. The results showed that the property of ultrafine Zn particles was so lively that there were lots of hydroxyls on its surface. There were some organic groups on the surface of modified Zn particles,like Si—O, —OC₂H₅, which means organically hybridized ultrafine Zn particles were prepared successfully. The modified Zn particles did not change the UV-Vis Absorption of methyl orange,and the characterized absorption peak was still at 464 nm. Modification by acidic TEOS hydrolysate had a little effect on the performance of the degradation of methyl orange, but the modification by alkaline TEOS hydrolysate was opposite.
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  Preparation of the functional materials of PF-CaCO₃ prepolymer and its properties characterization

  JIA Zhen, LI Guoliang, ZHANG Aying, YU Hongze, HUI Bin

  功能材料. 2016, 47(1): 1250-1254. https://doi.org/10.3969/j.issn.1001-9731.2016.01.053

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  In this paper, the melamine and urea were added into the system of phenolic resin, and the calcium chloride and ammonia carbonate were used to fabricate the functional prepolymer of PF-CaCO₃ in order to improve the heat resistance, the stability, the strength of phenolic resin (PF) adhesives and reducing the cost. Using the transmission electron microscopy (TEM), the scanning electron microscope (SEM), and the energy spectrum (EDS) analysis, the results showed that the nanoscale cube calcium carbonate (CaCO₃) wad prepared. The differential scanning calorimetry (DSC) and the thermogravimetric analysis (TGA) demonstrated that the prepared PF-CaCO₃ prepolymer had better compatibility and thermal stability.
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  Choosing proper grinding wheel for ultrasonic vibration-assisted grinding SiC_p/Al

  LIANG Guiqiang, ZHOU Xiaoqin, ZHAO Feifei, SHAO Fang

  功能材料. 2016, 47(1): 1255-1258. https://doi.org/10.3969/j.issn.1001-9731.2016.01.054

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  In this paper, electroplated diamond grinding wheel, brazing diamond grinding wheel, vitrified bond diamond grinding wheel and resinoid bonded diamond grinding wheel were applied on SiC_p/Al. Experiments were performed by using the ultrasonic vibration assisted grinding process. Comparative studies were carried out in terms of the wear and tear of grinding wheel, material removal and grinding surface morphology, coming to a conclusion of the general principles of how to select the grinding wheel for ultrasonic vibration assisted grinding SiC_p/Al. The results show that, resin bond diamond grinding wheel has advantages of smooth grinding, well-distributed material removal, good surface quality and little wear of the grinding wheel.Therefor, it is suitable for grinding SiC_p/Al,the research of this paper. as an aspect of the research on SiC_p/Al grinding process, has great guiding significance to the research on the choice of grinding wheel during the process of grinding.
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  Preparation and performance characterization of nanofibrillated cellulose paper with high strength and transparency

  YU Senhai, LIU Zhiming, WU Peng

  功能材料. 2016, 47(1): 1259-1262. https://doi.org/10.3969/j.issn.1001-9731.2016.01.055

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  Transparent nanofibrillated cellulose paper(transparent paper) were prepared by high pressure homogenization method,microfiltration deposition method,polyvinyl alcohol substrate polishing method,and with bamboo as raw materials.The correspondence between micro-morphology of nanofibrillated cellulose paper and its mechanical properties and light transmittance were analysized by SEM,UV-Vis tensile test and measurement systems.The research results show that the porous network of nanofibrillated cellulose paper(nanopaper) and transparent paper after polishing compared with the conventional A4 copy paper has a high tensile strength, and elongation at break of the network extend is also increased.The young’s modulus and tensile strength of transparent paper was respectively (1.31±0.35) GPa and (120.3±2.1) MPa. At the same time,there is a clear improvement in transmittance at 600 nm which was 65% used polyvinyl alcohol highly transparent substrate polished nanopaper.This kind of nanofibrillated cellulose paper with high transparency has some potential applications on flexible photovoltaic material field.