15 January 2013, Volume 44 Issue 01
    

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    综述·进展
  • The problem occurred during the development of quantum dot sensitized solar cell and the solution to them
    Chun-Fang WU;
    . 2013, 44(01): 1-7.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The efficiency of the quantum dot sensitized solar cell have broken through 5% up to now. But there is a big distance between the efficiency of quantum dot sensitized solar cell with that of the dye sensitized solar cell which is 12%. Five points which are charge recombation, light harvesting, structure of photoanode, electrolyte and counter electrode were put forward as the reason for the low efficiency of the quantum dot sensitized solar cell. Meanwhile the solution to them by researchers in the field of quantum dot sensitized solar cell was also introduced.
    • 研究·开发
  • Study on Adsorption of Bovine Serum Albumin on Biological Materials Surfaces
    . 2013, 44(01): 8-13.
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    The atomic force microscope was taken as the main tool to investigate the adsorption behavior of bovine serum albumin (BSA) molecules on CoCrMo alloys and Al2O3 ceramics in this article. The thickness of the BSA films and the adsorption force between BSA molecules and the samples were tested.
  • Effects of power duty cycle on corrosion property of ceramic coatings formed on magnesium alloy by PEO technology
    LI LI;
    . 2013, 44(01): 14-16.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The plasma electrolytic oxidation (PEO) coatings were prepared on AZ91D magnesium alloy in the Na2SiO3-NaF-NaOH electrolytes. This paper studied the effect of power duty cycle on micro-structure and corrosion property of PEO coatings. The morphology and phase composition of the coatings were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The corrosion performances of the coatings were evaluated via a three-electrode system in a 3.5-wt.% NaCl solution. The coating produced at 50% duty cycle was denser than that at 28% duty cycle. As a result, they performed better corrosion resistance in the present corrosive solution.
  • Preparation of Graphene with High Hydrogen Storage Properties by the High-vacuum and Low-temperature Chemical Exfoliation Method
    wenhui yuan;;;
    . 2013, 44(01): 17-21.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Graphite oxide (GO) was prepared by Hummers liquid oxidation method and the graphene with high surface area was then prepared by a high-vacuum and low-temperature chemical exfoliation method. The as-prepared GNS was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), Raman Spectra (RS), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM), respectively. The results indicate that graphite oxide is completely reduced to graphene and the graphene possesses a plicated layer structure with few defects. BET measurement and hydrogen adsorption experiment results show that the BET specific surface area of the graphene was about 908.3 m2．g-1 with rich pore structure and that hydrogen storage capacity of H2 on graphene reached up to 1.81 wt.%, 0.995 wt.% and 0.44 wt.% at 25, 40, 55 ℃ respectively, GNS is one of promising materials in the field of hydrogen storage.
  • First-principles study on electronic structure and optical properties of anatase TiO2 codoped with Sulfur and Manganese
    ;;Qing-Ju LIU
    . 2013, 44(01): 22-27.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The crystal structure, impurity formation energy, electronic structure, optical properties and band edge position of sulfur and manganese codoped anatase TiO2 were studied by using the plane-wave ultrasoft pesudopotentials method based on density functional theory. The calculated results show that the octahedral dipole moments in TiO2 increase due to the changes in lattice parameters, bond length and charges on atoms, which is very effective for the separation of photoexcited electron-hole pairs and the improvement of the photocatalytic activity of TiO2. The analysis from the band structures, density of states show that there are three new impurity bands in the top of the valence band in S-doped TiO2, two impurity bands below the conduction band and three impurity bands near the Fermi level in Mn-doped TiO2. On the base of the synergistic reaction of S and Mn, S-Mn codoped anatase TiO2 would lead to the narrowing of the band gap, the red shift of absorption wavelength and the increase of absorption coefficients in visible-light region. For S-Mn codoped TiO2, the band edge position of anatase TiO2 changes significantly, which can enhance the redox capacity and improve the efficiency of the photocatalytic.
  • Influence of electric field on formation of mesophase from modified coal tar pitch
    Xiao-Ling Xie
    . 2013, 44(01): 28-31.
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    Mesophase pitch was prepared in atmosphere and electric field with mesotherm coal tar pitch. Thermal conversion experiments were done in tube furnace controlled by programmed heating. The morphologie and structure of the sample were investigated by Polarizing microscope, X ray diffractometer, FT-IR Spectrometer and thermogravimetric analyzer. The effect of modify and electric field on formation of mesophase were investigated. The results show that the raw materials modified with formaldehyde play a part in promoting the formation of the mesophase. The electric intensity should be controlled in 20kV/m, which all affect the orderly fusion of mesophase and make for making mesophase with better molecular arrangement and orientation.
  • Influence of Nitrogen Flows on Structure and Properties of TiAlN Film Prepared by Mid-frequency Unbalanced Magnetron Sputtering
    ;Nai-Ru HE
    . 2013, 44(01): 32-35.
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    TiAlN films were deposited by mid-frequency unbalanced magnetron sputtering on stainless steel AISI202 and Si wafer P(111).The structure and properties of the TiAlN films were investigated by atomic force microscopy ,microXAM-3D surface profiler, X-ray diffraction, X-ray photoelectron spectroscopy and nanoindentation . With the nitrogen flows increasing the deposition of TiAlN films is decreasing, the Al/Ti ratio increasing first and then decreasing hardly. The films is made up of cubic crystalline TiN. The grain size became smaller and the columnar microstructure became looser. When the nitrogen flow comes to 20 sccm, the film shows the best hardness and bonding force.
  • Preparation and shape control of SiO2 nanofiber by Electrospinning
    Ying Yang
    . 2013, 44(01): 36-38.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    1 dimension silica nanofiber with unique big length-diameter ratio, excellent mechanical properties and thermal properties, which was widely used in fields of separation, catalytic and sensor, has been under the favour of scientists. Based on the technique of electrostatic spinning, combined with no template sol-gel method, the uniform diameter and continuous silica nanofiber without many cracks were synthesized. Research shows that: the morphology of synthesized SiO2 nanofiber is good, and the diameter is about 500 nm ~ 3 μm, with amorphous structure. Through adjusting aging time of gel to control the gel of viscosity, the shape and structure of silica was managed and SiO2 with bowl shape structure and SiO2 nanofiber with different diameter were obtained at last, which is feasible by using electrostatic spinning method combined with template free sol-gel way.
  • Studies on preparation and properties of regenerated protein fibers from wheat gluten by using Transglutaminase (TGase)
    Mao-Jun
    . 2013, 44(01): 39-42.
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    Transglutaminase (TGase)- mediated preparation of regenerated protein fibers from wheat gluten and their properties were studied in this work. The effects of TGase concentration gluten concentration, reaction temperature and time on the mechanical properties of wheat gluten (WG) fibers were discussed The results showed that the fibers obtained a better mechanical property when the gluten concentration was 30 wt.-% and the wheat gluten in the spinning dope was crosslinking treated with 5 U/g gluten of TGase for 1 h at 50 ℃. Besides, the fibers exhibited a better water stability at lower temperatures and pH levels. TGase treatment improved the water stability of the fibers.
  • Celluar Automata Simulation of the Grain Growth during the Heat Affected Zone of SiC in the Magnesium alloy
    Guang-Yao Xiong;;
    . 2013, 44(01): 43-46.
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    A grain growth simulation model for SiC in the Magnesium alloys Laser alloying process based on cellualar automata was construcyed based on the grain growth driving force theory of grain boundary. The results showed that the simulation was stable. The simualtion results were in good agreement with the microstucture of SiC materials. Cellular automata model was applicable to the grain growth simulation of Magnesium alloy during Laser alloying process.
  • Preparation and Characterization of Sm3+ : ZnO-B2O3-Al2O3-SiO2 Transparent Glass-Ceramics
    . 2013, 44(01): 47-50.
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    Sm3+-doped transparent glass-ceramics containing ZnAl2O4 was prepared with controlled crystallization of melt-quenched glass. The sample is characterized by DSC, XRD, andUV-Vis-Nir. The result indicates that the main phase of crystal is ZnAl2O4 and the crystalline particle size is 30 nm. The optical transmittance is about 70% in the visible region and 70% ~85% in the near-infrared region.The glass- ceramics can emit red light under the excitation of long UV and blue lights. The luminescent intensity of glass-ceramics is much larger than the corresponding glass.
  • Comparation with performance of waste paper pulp reinforced starch-based foams with different foamer
    . 2013, 44(01): 51-55.
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    The foamed composites could be completely biodegradable which was mainly prepared by cassava starch as matrixes, reinforced by waste paper pulp, toughened by PVA, separately foamed by foamer of H2O, NH4HCO3 and AC/ZnO, plasticized by the mixed plasticizer of glycerol/urea and other adjuvants using extrusion foaming method. They were respectivelyreferred as WPS, NPS, APS. Then, the foamed composites‘ apparent density, expansion ratio, water absorption, rebound rate, thermostability and cell morphology were discussed and compared with. The results showed that the apparent density decreased with increasing foamer content, then increasing, while foaming ratio and water absorption increased, then decreasing;The thermostability of NPS was the best, and APS was the second, and WPS was the third. The number of cells firstly increased with increasing foamer content, then decreasing and the side of cells became larger with increasing content of foamer, and the size of APS was more uniform than that of WPS and NPS, and the number of APS was more than that of WPS and NPS.
  • Effect of β-cyclodextrin side groups on structure and properties of new polycarboxylate superplasticizer
    shenghua lu;
    . 2013, 44(01): 56-60.
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    The effect of polycarboxylate superplasticizer contained β-cyclodextrin (β-CD) side groups (MPC) on quantity of hydration products and microstructure of hardened cement were investigated by XRD, SEM and total porosity tests at different curing age. XRD results show that MPC can speed up remarkably the amount of portlandite (CH) at the later stages of cement curing periods. SEM and porosity results show that the microstructure and the total porosity of the hydration products become more homogeneity and little using MPC as superplasticizer. The results of the property of concrete in macroscopy show that MPC brings higher compressive strength values than that of polycarboxylate superplasticizer (PC) at any hydration age. The compressive strength test of 7d and 28d indicated that MPC is benefit for the improvement of the later compressive strength of concrete.
  • Study on the magnetic properties of the Nd10Fe76B10Nb4-xZrx(x=0-4) alloys
    Jie Liu;Xiao-Hua TANHui XU
    . 2013, 44(01): 61-64.
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    The magnetic properties of the nanocomposite Nd10Fe76B10Nb4-xZrx(x=0-4) alloys prepared by the melt-spinning and subsequent annealing treatment are investigated. The exchange coupling are studied by demagnetizing curves, δM curves and susceptibility curves. The results indicate that Zr addition decrease the average grain size of the Nd2Fe14B phase and enhance the exchange coupling between magnetic phases, which results in an increase of the magnetic properties. When Zr addition is up to 2 at%, the optimum magnetic properties are obtained with the intrinsic coercivity of 1059.16 kA/m, remanence of 1.08 T and a maximum energy product of 185.72 kJ/m3.
  • Effect of crosslink monomer dosage in the shell on morphology and opacity ability of the hollow latex particles
    . 2013, 44(01): 65-69.
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    In this paper, the well monodispersed hollow latex particles were synthesized through multi-step seeded emulsion polymerization. And the effect of crosslink monomer dosage in the shell on the morphology and opacity of the hollow latex particles were investigated by the characterization methods of particle size analysis meter, viscosity meter, acid value analysis, TEM, SEM and UV-Vis spectrophotometry. The results show that with the increase of the crosslink monomer dosage in the shell, the strength and the swelling degree of the latex particles present trends of increase and decrease respectively, and both the uniformity of the void and the surface smoothness of the latex particles were improved. Moreover, when the crosslink monomer dosage was in the range of 0-6wt% in the shell, the opacity ability of the hollow latex particles increased, whereas, the opacity ability of the latex particles keeps constant when the crosslink monomer dosage exceeded 6wt%. The optimum dosage of the crosslink monomer in the shell was 6wt%.
  • Synthesis and properties of hyperbranched dispersant for high concentration of CWS
    ZHANG Guang-Hua;;;;
    . 2013, 44(01): 70-74.
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    The 1.5 generation hyperbranched molecule was synthesized with dehydroabietylamine as the core by means of Michael addition reaction and amidation condensation reaction with ethylenediamine and methyl acrylate as raws by divergent method.Then,the dispersant was synthesized by means of the 1.5G hyperbranched molecule as initiator by reaction with 2-aminoethanesulfonic acid.The structure of products were identified by IR spectra and 1HNMR spectra .The influences of dispersant on apparent viscosity，rheological behaviour and static stability of coal water slurry prepared from Shenfu coal are studied.The results of the research show that the slurry concentration reach at 67%,and the dosage of the dispersant is 0.4% ( quantity fraction of the coal-water slurry),the viscosity of the coal water slurry would be only at 987 mPa·s. The rheological investigation indicates that the slurry pumped with dispersant is pseudoplastic fluid.The adsorption curve of hyperbranched dispersant on coal particles approximates L type which has a good adsorptive capacity,and the coal water slurry has a good static stability.
  • Effect of Fe/P Mole Ratio on the Iron Phosphate Glass-Ceramic Wasteforms
    ;Qi-Long LIAO
    . 2013, 44(01): 75-78.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    The effects of iron phosphate glass-ceramic wasteforms with different Fe/P mole ratio on their structures and properties were investigated. The chemical durability of glass-ceramic wasteforms was measured by dissolution rate (DR) method. The structure of the glass-ceramic wasteforms was analyzed by Fourier turn infrared (FTIR) and X-ray diffraction (XRD),The content of leaching solution was determined by ICP-OES. The results showed that the chemical stability of iron phosphate glass-ceramic wasteforms with Fe/P=0.67 is the best in all the prepared samples. The main crystalline phase of glass-ceramic wasteforms is monazite. There are a large number of [PO4]3- groups, a small number of [P2O7]4- groups, and without [PO3]- groups in the wasteforms. The leaching rate of the sample sintered at 980℃ for 3 hours is about 7.05×10-9g?cm-2?min-1, which is lower than the leaching rate of other samples, Ce, La element was not detected in, the rest of the leaching elements from the glass phase.
  • Synthesis and characterization of a novel amphoteric super absorbent resin based on corn straw
    ;;;
    . 2013, 44(01): 79-83.
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    Super absorbent resins were synthesized by graft copolyme-rization reaction of acrylic acid (AA) and acrylic amide (AM) and acryloyl-oxyethyl trimethyl ammonium chloride (DAC) onto the pretreatment corn straw (PTCS) by radical polymerization in aqueous solution. The factors, which in?uenced absorbency of super absorbents, such as weight ratio of monomers and pretreatment corn straw (PTCS), the amount of initiator and cross-linker, temperature, time and neutralization degree of AA, were investigated. The molecular structure of the product was con?rmed by Fourier transform infrared spectroscopy (FTIR) and the morphological features were evidenced by scanning electron microscopy (SEM). The experimental results showed that when the mass of the PTCS,AA,AM,DAC were 1g, 5g, 2g, 0.5g, respectively; the ratio of K2S2O8 to monomer was 1.0%;the ratio of MBA to monomer was 0.1%; neutralization degree of AA was 75%; temperature was 60 ℃ and time was 3 h, the super absorbent resin reached the best water absorbency of 235 g/g in distilled water and 31 g/g in 0.9 wt% NaCl solution.
  • Effect of acid treatment on microstructure and mechanical property of basalt fiber
    . 2013, 44(01): 84-87.
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  • Study on microstructure and mechanical abilities of Ti66.7Ni20Cu13.3 bulk metallic glass
    ;;
    . 2013, 44(01): 88-91.
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    We proposed the composite strengthening and toughening technology routin, to develep the in-situ formed bulk metallic glass matrix composites toughened by the precipitation soft supercooled austenitic phase, and strengthened by deformation induced martensitic transformation of the supercooled austenite in shape-memory crystals.The effect of cooling rate on microstructure and mechanical properties of Ti66.7Ni20Cu13.3 bulk metallic glasses matrix composites was investigated. The results show that the shape-memory supercooled austenite crystals B2-TiNi and some brittle intermetallics phases separate on the armophous matrix. And the final fracture is controlled by the competition of the martensite phase and brittle crystallizing phases.
  • Effect of temperature and nanoparticle concentration on the viscosity of nanofluids
    ;
    . 2013, 44(01): 92-95.
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  • Graphene oxide as a nanocarrier for controlled loading and release of doxorubicin hydrochloride
    Xiao LI
    . 2013, 44(01): 96-98.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    We synthesize nano-graphene oxide with modified Hummers and explore the biological applications of nano-graphene oxide as a nanocarrier. A novel graphene oxide-doxorubicin hydrochloride was prepared via a method of sonication and oscillation, the loading and release behaviors of DXR on GO were investigated by high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy and UV-vis spectrophotometer. The loading capacity was up to 4.6mg/mg, the release of DXR indicated strong pH dependence and imply hydrogen-bonding interaction between GO and DXR.
    • 工艺 ·技术
  • The preparation of Mo2FeB2 and the influence of different Fe-source on microstructure
    Jie WANG;;
    . 2013, 44(01): 99-102.
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    Mo2FeB2 powders were synthesized from Mo powders, carbonyl iron powders and amorphous B powders by sintering in the vacuum. The phase evolution process was analyzed by X-ray diffraction (XRD) and the microstructure was analyzed by scanning electron microscopy (SEM). The experiment results show that relatively pure Mo2FeB2 powders can be synthesize through heating at 1400℃ for 2h. Moreover, the particle size, grain size and lattice distortion can be decreased remarkably by using FeB powders, instead of carbonyl iron powders, as Fe-source. And the particle size of synthesized Mo2FeB2 was about 5μm while the grain size was about 64nm.
  • Improvement of Polyepoxysuccinic Acid Synthesis and the Scale Inhibiting Capacity Evaluation
    Xia LI;
    . 2013, 44(01): 103-106.
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    Polyepoxysuccinic acid (PESA) is a well-established green scale inhibitor. The focus is on the investigation of the effect of the main process parameters such as pH in the synthetic system, temperature and time upon the scale inhibition performance of the resultant product. The findings show that the pH in the synthetic system affects significantly the intermediate yield in the epoxidation step, and that there exists a correlation between the operational temperature and time in the polymerization process. Using magnesium -eriochrome black T to indicate the changes of color, we made the transition very evident from amaranth to blue, and improved the sensitivity of retitrate end point. This method has the higher degree of accuracy and precision, makes the RSD%<1% and the standardized recovery is from 99.5％ to 100.5％. The pilot-scale scale inhibtion performance of PESA at 10h on stream was invariably no less than 95%.
  • Effect of high energy ball milling on dispersion of α-Al2O3 micro-powders in water suspension
    Yu-LI Sun
    . 2013, 44(01): 107-110.
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    Combing high-energy ball milling with dispersing agent, the effects of ball milling parameters and kinds of dispersing agent on the dispersion stability of α-Al2O3 micro-powders were studied in this article. The best technological condition to prepare stable micro α-Al2O3 polishing fluid was also researched. The results show that ball milling can better promote the dispersion of α-Al2O3 micro-powders. On the interaction of ball milling and dispersing agent, better dispersion effect can be acquired on the condition of certain parameters. The optimal dispersing condition is 10 to 1 ball to powder weight ratio, pH=10.5, rotation speed of ball milling 300 r?min-1, ball milling time 60 min and SHP 1%.
  • Dielectric Properties of BaZrxTi1-xO3 Ceramics Prepared by Microwave Sintering
    Yang YU;
    . 2013, 44(01): 111-114.
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    A comparative study on the microstructure and dielectric properties of BaZrxTi1-xO3 ceramics prepared by microwave sintering（MS） and conventional sintering（CS） has been done. It was found that MS samples need much shorter time than CS samples to obtain the same degree of densification. Compared with CS samples, MS samples possessed higher degree of crystallization and smaller grain size. The dielectric properties of the samples were measured as a function of temperature. It was observed that the intensity and half width of Curie peak were changed for MS samples compared with that of CS samples. Moreover, the dielectric relaxations were also changed.
  • Fabrication of micro-porous polyacrylimide through irradiation and characterization
    tang jian jun
    . 2013, 44(01): 115-118.
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    Acrylic, acrylonitrile and methyl methacrylate were mixed uniformly, and polymerization was induced by electron beam or γ-ray irradiation. The micro-phase separated structure of degradable chains and polyimide precursor were obtained. Then, imidezation and pore-forming have been conducted by programmed heating, and the micro-porous polyacrylimide materials were fabricated. According to FTIR analysis, polymerization has been conducted by electron beam and γ-ray irradiation, and polyacrylimide was prepared. The micro-porous material exhibited good thermal stability. Initiated by electron beam and γ-ray irradiation, the initial decomposition temperature of the material is 341.8℃ and 343.46℃.SEM analysis demonstrated that the obturator foramen was uniform, and the aperture of the material irradiated by electron beam and γ-ray were about 100μm and 30μm.
  • The Antibacterial property of the self-solidifying base polymethylmethacrylate impregnated with the nitrogen-doped TiO2
    ;
    . 2013, 44(01): 119-123.
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    Abstract AIM:to study the Antibacterial property of the self-solidifying base polymethylmethacrylate impregnated with the TiO2-xNy in vitro.Methods: the TiO2-xNy nanoparticles were successfully prepared by solvothermal method,and the prepared powders were characterized by X-ray diffraction and UV-Vis spectrophotometer; the TiO2-xNy nanoparticles and TiO2 commercial powder were separately added into polymethylmethacrylate powder in the ratio of 3％，5％，7％，10％,and then the different types of powders were prepared into the same sample which was 10 mm in diameter and 1 mm of thickness; the anti Streptococcus mutans and anti Candida albicans properties of the base polymethylmethacrylate powders which impregnated with two types of powders in various concentrations were demonstrated by the experiments of anti-bacterium-circles.Result:the microstructure of the TiO2-xNy nanoparticles is sharp titanium mineral structure,and this powder provides photochemical catalysis activity in visible light;the Antibacterial property of the polymethylmethacrylate impregnated with the TiO2-xNy nanoparticles is obviously superior to the polymethylmethacrylate impregnated with TiO2 commercial powder,and as the increase of the TiO2-xNy nanoparticles concentration,the Antibacterial property has been enhanced in visible light condition.
  • Investigation on mechanical properties,degradation performance and rheological and rheological behavior of Poly(butylenes succinate) / Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) /Nanokaolin blends
    ;;;LIANG Duo-ping
    . 2013, 44(01): 124-128.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Abstract:In order to improve the combinatorial performance of poly(butylenes succinate)(PBS)/poly(3-hydroxybutyrate-co-4-hydroxybutyrate)(Poly(3HB-co-4HB)) like the mechanical properties and rheological behaviors, PBS/Poly(3HB-co-4HB)/nanoKaolin blends were prepared by mechanically melting mixing. The mechanical and degradation properties and rheological behaviors of the PBS/ Poly(3HB-co-4HB)/nanoKaoln were studied respectively with universal material testing machine, rheometer and scanning electron microscope (SEM). The mechanical properties testing of universal material testing machine shown that the relative mass ratio of nanoKaolin is 8, the notched impact strength and elongation at break of PBS/ Poly (3HB-co-4HB)/nanoKaolin blends were improved obviously. However,the relative mass ratio of nanoKaolin increased, their properties decreased in a way. At the same time, the tensile strengths of PBS/ Poly (3HB-co-4HB)/nanoKaolin blends were declined clearly. The rheology experiments indicated the storage modulus (G′) and loss modulus (G″) increased significantly with the increase of frequency. The SEM shown that degradation performances of PBS/Poly (3HB-co-4HB)/nanoKaolin(100/10/12)were favorable.
  • Preparation of ultrafine Co-Cr-Fe-Ni Cobalt black Pigments by Microemulsion Method
    . 2013, 44(01): 129-131.
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    Abstract：The preparation process of ultrafine cobalt black pigments via W/O microemulsion system of AEO7 (Alcohol Ethoxylate) / cyclohexane / 1-butanol was studied. The pseudoternary phase diagram of AEO7/cyclohexane/n-butyl alcohol/water was drawn at different temperatures. The cobalt black particles were confirmed by Zetaszier Nano-ZS of Malvern ；the structure of Cobalt black pigment was analyzed through XRD and FT-IR. In addition, the color performance of the Cobalt black pigment was characterized by UV-Vis and spectrometers. The result shows that as the precursor ion concentration decreases, particle size decreases; and the structures were series of spinels .And as the calcination temperature rise, the cobalt black presented purer black, slant red reduced.
  • Analysis and Testing of Mechanical Properties for Bionic Skin Materials
    . 2013, 44(01): 132-135.
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    Bionic skin material is a special kind of functional materials made of a polymer composited materials, which can used in the automobile collision test for safety performance of dummy skin and muscle. The resilient and injury factor of dummy skin will have some affection to the automobile collision test for safety performance, and it has also the impact for the car crash test to determine the scientific and the accuracy of damaging on the human body. But the mechanical properties of bionic skin materials are mainly determined by the mixed base, the amount of filled material and the curing time in the preparation process. For the special performance of bionic skin materials used in automotive crash tes, the mechanical properties and the preparation of the bionic skin materials are studied, and the impact of the different mixed base rubber, curing agent, filler agents and post-curing time on the mechanical properties of bionic skin materials are also studied. Finally, the synthetic pathway of bionic skin materials with optimal mechanical properties is approched, with the help of ultrasonic testing and impact testing for three different bionic skin materials.
  • Template preparations for ordered mesoporous carbon and its electrochemical performances
    wang kai
    . 2013, 44(01): 136-138.
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    Using the F127 as raw material, ordered mesoporous carbon (OMC) was synthesized by the template method. X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to study its structure and morphology. The results show that the OMC has ordered rules and the width of pore wall is 10 nm. The electrochemical performance shows that this electrode material has good electrochemical performance and good reversibility. After 500 cycles, ordered mesoporous carbon has capacitance retention rate of 90.5% at a current density of 700 mA/g.
  • Fabrication of transparent conductive ZAO film by DC magnetron sputtering and properties study
    CHEN Xiao yan
    . 2013, 44(01): 139-142.
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    Abstrate: Based on orthogonal design, through change technologic parameters such as sputtering temperature, sputtering power, O2 flow rate, Aluminium-doped zinc oxide(ZnO:Al) transparent conducting film were prepared by D.C. reactive magnetron sputtering on glass substrate with 2 wt% Al-doped ceramic target. The crystal structure, morphology topography, optical and electrical properties of the ZAO thin film was analyzed by XRD, SEM, fluorescence spectrophotometer and four-probe tester. Mathematical statistical method was employed to analyze the experimental, the comprehensive optical fabrication condition of ZAO films was generalized, that is 200℃ in sputtering temperature, 40W in sputtering power, and 20 percent O2 flow rate, 400℃ in annealing temperature; the corresponding film’s sheet resistance value is 11Ω/□ and has the best luminous property, which would be appropriate for the thin film solar cell transparent conductive electrode.
  • Synthesis and characterization of color-changing Polyphenylene sulfide (PPS)
    ;Gang Zhang;;;;Yong-Gang YAN
    . 2013, 44(01): 147-150.
    Abstract ( ) Download PDF ( ) Knowledge map Save
    Three kinds of color-changing poly(phenylene sulfide) (PPS) were synthesized by the reaction of dihalogenated monomer and sodium sulfide (Na2S?xH2O) via nucleophilic substitution polymerization under high pressure. The polymers were characterized by FT-IR spectrum, X-ray diffraction, DSC, TGA, mechanical test and dissolvability experiment. These polymers were found to have good thermal performance. At the same time the resultant resins had high tensile strength and compressive strength. Also they showed a special property whose bright shine colors changed into different colors in the acid solution.
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