剪切速率对PA 6/PP共混物微观结构的影响  

Impact of shear rate on microstructure of PA 6/PP blends

作　　者：张甲敏[1] 连照勋[1] 王雪静[1] 范立群[1] 祝勇[1] 

机构地区：[1]河南科技学院化学化工学院,河南新乡453003

出　　处：《合成树脂及塑料》2009年第2期62-65,共4页China Synthetic Resin and Plastics

摘　　要：以马来酸酐(MAH)、苯乙烯(St)多单体熔融接枝聚丙烯(PP)[PP-g-(MAH-co-St)]为增容剂改性聚酰胺(PA)6/PP体系,制备了PA6/PP合金,研究了合金的流变性能。结果表明,PP-g-(MAH-co-St)增容的PA 6/PP共混物熔体属假塑性流体,熔体黏度随PP-g-(MAH-co-St)含量的增加逐渐增大。在较低剪切速率(99,90s^(-1))下,体系分散相PP的粒径尺寸较小;剪切速率从99.90s^(-1)到706.50s^(-1),分散相粒径增加;剪切速率从706.50s^(-1)增到5 002.65 s^(-1),分散相粒径又相对减小。A kind of alloy of polyamide 6 and polypropylene （PA 6/PP） was prepared via PP system with the maleic anhydride （MAH） and styrene-based multi-monomers melt modification of the PA 6/ grafted PP [PP-g-（MAH- co-St）] as compatibilizer. The study on rheological property indicates that the PA 6/PP system compatibilized with PP-g-（MAH-co-St） can be classified as pseudoplastic fluid, its melt viscosity increases gradually with the content of PP-g-（MAH-co-St）. As the dispersed phase, PP exists in the form of particles with smaller size at lower shear rate （99.90 s^-1） and its particle diameters augment when the shear rate rises to 706.50 s^-1 from 99.90 s^-1. However, the particle diameters tend to decline if the shear rate continues to rise from 706.50 s^-1 to 5 002.65 s^-1.

关 键 词：聚酰胺6 聚丙烯 共混物 剪切速率 微观结构 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]