文献类型：期刊文献

中文题名：PP/EPDM共混物的X射线衍射研究

英文题名：STUDIES ON X-RAY DIFFRACTION OF PP/EPDM BLENDS

作者：汪道明[1];张志平[1]

机构：[1]华东化工学院材料科学研究所

年份：1993

卷号：9

期号：1

起止页码：97

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：1993091044254);Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：聚丙烯;乙丙橡胶;共混物;结晶行为

外文关键词：PP. EPDM, blend. WAXD.crystallization behaviour, crystalline structure.

摘要：用WAXD研究PP/EPDM共混物的结果表明,PP晶相中除了主要含有α-单斜晶型PP之外,还存在β-六方晶型PP结构特征,这归结于试样的冷却速度以及EPDM充当了β-晶型PP的非均相成核剂。β-晶型含量(K)取决于共混物组成,在10％EPDM时,K有极大值(19.53％)。本文还研究了β-晶型的形成对α-晶型结构的影响,共混物中EPDM含量为10％时,α-晶型的表观晶体尺寸、峰强度以及共混物的总结晶度均有极小值。
Blends of polypropylene (PP) with ethylene propylene terpolymer (EPDM) were examined by wide-angle X ray diffraction(WAXD). It was found from X-ray diffraction pattern that in addition to the predominant monoclinic a form of PP. there existed the hexagonal β-form of PP which may be caused by rapid cooling of samples and by EPDM acting as a heterogeneous nucleating agent. The contribution of the β form in samples depended on EPDM content. In the blend containing 10% of EPDM. The amount of the β form had a maximum (19. 53%). The influence of the formation of the β form on the β form crystalline structure was reported. In the blend having 10% of EPDM, the apparent crystal size and peak intensityof a-form had minima so did the overall crystallinity.