滑石粉对聚丙烯微观形态和性能影响  

Influence of Talc on Morphology and Properties of PP

作　　者：郭甜甜[1] 丁雪佳[1] 张雨[1] 周克斌[1] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《中国塑料》2011年第12期39-42,共4页China Plastics

基　　金：北京市新型高分子材料制备与加工重点实验室开放课题(081120);北京市教委重点学科发展基金资助项目(00204)

摘　　要：以滑石粉为填料通过挤出机熔融共混制备聚丙烯(PP)/滑石粉复合材料,考察了硅烷偶联剂对滑石粉表面改性前后及添加不同含量的乙烯-辛烯共聚物(POE)对复合材料力学性能、流变性能和微观结构影响。结果表明,滑石粉表面改性后可以明显提高PP的缺口冲击强度,当PP/滑石粉质量比为100/10和100/30时,PP/改性滑石粉较PP/未改性滑石粉复合材料的缺口冲击强度分别提高37.8%与36.4%;表面改性后的滑石粉使复合材料的储能模量降低;POE的加入提高了滑石粉在PP基体中的分散性,随着其含量的增加,复合材料的缺口冲击强度提高,韧性提高。Polypropylene （PP）/talc composites were prepared via melt extrusion. The effects of surface modification with silane and the addition of ethylene-oetene copolymer （POE） on the mechanical, rheological properties, and microstructure morphology of the composites were investigated. It showed that the talc surface modification significantly improved the impact strength of PP. While PP/talc mass ratio was 100/10 and 100/30, the notched impact strength of PP/talc composites increased by 37.8 % and 36.4 %, respectively, by the silane modification. However, the surface modification of talc decreased the storage modulus. POE promoted the dispersion of talc in PP matrix. The impact strength of the composites increased with increasing POE content.

关 键 词：聚丙烯 滑石粉 硅烷偶联剂 表面改性 复合材料 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]