无机粒子对聚丙烯/β晶型成核剂体系的晶型影响  

The Effet of Inorganic Particle on Crystalline Forms in the PP/β Phase Nucleator System

作　　者：张文俊[1] 赵永琴[1] 吕志平[1] 

机构地区：[1]太原理工大学精细化工研究所,山西太原030024

出　　处：《太原理工大学学报》2006年第2期222-224,共3页Journal of Taiyuan University of Technology

基　　金：山西省科技攻关项目(12909206)

摘　　要：采用熔融压片法制作聚丙烯薄片,以WAXD为测试手段考察研究了纳米SiO2、纳米CaCO3及5A型分子筛三种无机粒子对PP/β晶型成核剂体系晶体形态的影响,得出了各种体系中β晶型的相对百分含量Kβ值。结果表明,5A分子筛和纳米CaCO3成核能力较弱,对β晶型成核剂的诱导影响作用不明显,是较好的无机填料粒子。而纳米SiO2少量加入即能强烈影响晶体形态。这一结果可用竞争成核的机理解释。In this paper, nano-CaCO3 ,nano-SiO2 and 5A zeolite were added to the pp/β-phase nucleator system and the crystalline forms was investigated by WAXD. The result showed that nano-CaCO3 and 5A zeolite have less competitive nucleating ability and less influence to the β phase nucleating agent. In contrast, the nano-SiO2 particle can strongly influence the crystalline forms of pp/β phase nucleator system. The result can be illustrated by mechanism of competitive nucleating.

关 键 词：聚丙烯 成核剂 无机粒子 竞争成核 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]