热致液晶PEI与PES—C共混物的研究  

Studies on the Blends of Thermotropic Liquid Crystalline Polymer PEI and PES-C

作　　者：郑京桥[1] 王尚尔[1] 张宏放[1] 陈天禄[1] 莫志深[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《功能高分子学报》1995年第3期243-248,共6页Journal of Functional Polymers

基　　金：国家自然科学基金

摘　　要：通过熔融共混，制备不同配比（２．５／９７．５～７５／２５）的ＰＥＩ／ＰＥＳ—Ｃ共混物，使用ＷＡＸＤ、ＤＳＣ、锥板流变仪、力学性能测试、ＳＥＭ等方法对共混物进行了研究。共混后强度、模量均有提高，在高剪切速率下，共混物的粘度有所降低。扫描电镜照片显示，共混物具有“皮芯”结构。lends of thermotropic liquid crystalline poly(ester-imide) (LCPEI) and an amorphous Phenolphthalein poly(ether-sulphone) (PES-C)were prepared by using small single screw extruder. The morphology and the mechanical properties were studied by WAXD,DSC,SEM, rheological experiment and mechanical test. The strength and modulus of the PEI / PES-C blends were increased and reached the maxmium at composition of 75% and 50% PEI respectively. The viscosity was significantly decreased with the addition of 10% LCPEI,thus the processing condition might be improved.SEM photographs showed that the blends possessed 'core-shell' structure. The liquid crystalline polymer formed anisotropic fine fibers in the shell and spherical or elliptical domains in the core. They were all fairly dispersed into the PES-C matrix.

关 键 词：热致性 液晶 流变性质 力学性能 聚芳醚砜 

分 类 号：TQ326.55[化学工程—合成树脂塑料工业]