超支化聚(酰胺-酯)对聚丙烯/聚氯乙烯/苯乙烯-甲基丙烯酸甲酯共聚物接枝聚丙烯共混体系的增容作用  

Compatibilization Effect of Hyperbranched Poly (amide-ester) on PP/PVC/PP-g-(St-co-MMA) Blends

作　　者：刁建志[1] 巴信武[1] 王素娟[1] 丁海涛[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《中国塑料》2004年第10期14-17,共4页China Plastics

基　　金：国家自然科学基金 (批准号 :2 0 1740 0 8);河北省自然科学基金 (B2 0 0 40 0 0 0 93 )资助

摘　　要：研究了超支化聚 (酰胺 -酯 ) (HBP)对聚丙烯 /聚氯乙烯 /苯乙烯 -甲基丙烯酸甲酯共聚物接枝聚丙烯共混体系 [PP/PVC/PP g (St co MMA) ]的增容作用。讨论了HBP的用量对PP/PVC( 80 / 2 0 )共混物力学性能的影响 ;研究了剪切应力、剪切速率和温度对PP/PVC( 80 / 2 0 )共混物熔体黏度的影响。实验结果表明在PP/PVC/PP g (St co MMA) ( 80 / 2 0 / 6)共混物中加入 1份HBP时 ,就可以很好改善共混体系的相容性 ,使共混物拉伸强度达到最大值 ,同时使熔体表观黏度达到较小值。该共混物熔体属于假塑性流体。扫描电子显微镜 (SEM )研究结果证明了HBP增强了PP/PVC/PP g (St co MMA)的界面粘结作用 。A ternary blend of polypropylene (PP), poly(vinyl chloride), and styrene-co-methyl methacrylate grafted PP [PP-g-(St-co-MMA)] hyperbranched poly (amide-ester) (HBP) was introduced. The effect of HBP on the mechanical and rheological properties of the blends were investigated. When the amount of HBP was 1phr, the tensile strength exhibited a maximum and the apparent melt viscosity gave rise to a minimum. The scanning electron microscopy (SEM) study indicated that HBP reduced the phase separation of the various components and thus improved the compatibilization.

关 键 词：超支化聚(酰胺-酯) 聚丙烯/聚氯乙烯/苯乙烯-甲基丙烯酸甲酯共聚物接枝聚丙烯共混体系 增容剂 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ325.3