;;
. 2012, 43(10): 11-0.
Abstract (
)
Download PDF (
)
Knowledge map
Save
Abstract: In order to understand the influence of fiber beating on the synthesis of polyurethane from plant fibers, its physical properties, surface feature, valence bonds were tested. Based on the analysis of physical properties on the fiber based polyurethane composites, the dry tensile index, wet tensile index, folding endurance and tear index were all increased with the increase of beating degree, when the adding dosage of imidazole-TDI-PEG400 (called ITP400 for short) was 10% (of absolutely dry pulp) . When the beating degree was 55°SR, the dry tensile index, wet tensile index, folding endurance and tear index of the obtained composite can be increased by 1.06 times, 9.75 times, 1.12 times and 1.12 times. The SEM observation of treated composite reveals the dosage of needles and membrane ,which may form crosslinking between fibers, was increased with the increase of beating degree. The XPS characteristics show that the content of urethane bond was also increased with the increase of beating degree. The content of urethane bond was 1.63% when the beating degree of composite was 75°SR, which is 6.30 times more than composite of 10°SR.