β晶型等规聚丙烯/POE增韧体系的结晶和力学性能  

THE MECHANICAL AND MELTING CRYSTALLIZATION PROPERTIES OF β-FORM POLYPROPYLENE/POE BLENDS

作　　者：郭敏怡[1] 于莲[1] 熊志强[1] 郑德 王文治 陈鸣才[1] 

机构地区：[1]中国科学院广州化学研究所 [2]广东炜林纳功能材料有限公司,广东佛山52851

出　　处：《高分子材料科学与工程》2006年第1期80-83,共4页Polymer Materials Science & Engineering

基　　金：国家高新技术研究发展863计划(2003AA324010)资助

摘　　要：研究了在β晶聚丙烯中加入不同质量分数POE的增韧体系的力学性能,通过差示扫描量热法(DSC)对聚丙烯的晶型进行了研究。结果表明,β晶型等规聚丙烯/POE增韧体系具有高的冲击强度,经过0.3%β晶成核剂处理的聚丙烯与质量分数为25%的POE增韧体系的冲击强度是未经处理的聚丙烯/POE增韧体系的1.5倍,是纯聚丙烯的12倍;与单纯的POE增韧聚丙烯相比,消除了脆韧转变点;试样在拉伸前后呈现明显的β晶型向α晶型的转变。The effect of various POE content on the mechanical properties of 0.3%β-form crystalline nucleated agent treated PP/POE blend were investigated for fixed filler loading of 0～25%, and the β-form crystalline of the blend were analyzed by DSC. The result reveals that nucleated agent treated PP/POE sample exhibits a greater notched Izod impact strength. With the increase of POE content, brittle-ductile transition（BDT） of the untreated PP/POE occurs in the impact tensile test. While the treated PP/POE blend does not exhibit such transition. The transition of β→α form of treated PP/POE blend in tensile strength test were also discussed.

关 键 词：聚丙烯 Β晶 POE 增韧 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]