玻璃微珠对PP/SAN共混体系动态流变行为的影响  

Effects of Addition of Glass Bead on the Rheology of Immiscible Polymer Blend Polypropylene/Poly(Acrylonitrile-co-Styrene)

作　　者：于清泉[1] 杨其[1] 黄亚江[1] 白露[1] 王波[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《高分子材料科学与工程》2008年第9期92-95,99,共5页Polymer Materials Science & Engineering

基　　金：教育部科学技术研究重点项目资助(106133);国家基础研究专项(973)经费资助(2005CB623800)

摘　　要：用熔融共混的方法制备了一系列玻璃微珠(GB)含量不同的PP/SAN/GB复合材料。试样断面的SEM结果表明,GB与SAN的亲和力更强,GB选择性分布在分散相SAN中。流变测试结果表明,GB的含量和分布极大地影响着复合材料的流变行为。低含量时(小于15 phr)GB的加入对共混体系的流变行为基本无影响,当加入GB量超过一定值(15 phr)时体系的复数黏度和动态储能模量才有明显的升高。GB的表面处理改善了GB的分散性,没有改变选择性分布,增加了与聚合物之间的作用力,提高了共混体系的动态储能模量和复数黏度。A series of polypropylene/poly（acrylonitrile-co-styrene）/glass bead composite （PP/SAN/ GB） was prepared using ratio of PP/SAN70/30 （weight） via melt blend method. From the SEM picture, we found that the miscibility of this blend is very poor and GB trends to load in SAN phase. The results from ARES rotational rheometer show that the rheology of PP/SAN/GB composite is strongly dependent on the content and location of GB. At low content of GB, the introducing of GB does not change the rheology of PP/SAN blend. As the content of GB reaches a critical value （15 phr）, dynamic storage modulus and complex viscosity of PP/SAN/GB composite begin to increase remarkably. The composites including GB treated by KH550 coupling agent have higher dynamic storage modulus and complex viscosity.

关 键 词：聚丙烯 苯乙烯-丙烯腈共聚物 共混物 玻璃微珠 形态结构 动态流变 

分 类 号：O631.21[理学—高分子化学]