提高发泡聚丙烯熔体强度的研究进展  

RESEARCH DEVELOPMENT IN MELT STRENGTH IMPROVEMENT OF FOAMED POLYPROPYLENE

作　　者：李春艳[1] 何继敏[1] 

机构地区：[1]北京化工大学塑料机械及塑料工程研究所,北京100029

出　　处：《工程塑料应用》2008年第2期76-79,共4页Engineering Plastics Application

摘　　要：介绍了聚丙烯(PP)泡沫塑料的特点、国内外发展概况及其发泡研究中存在PP熔体强度较低的普遍问题。重点概述了提高PP熔体强度的4种方法,即采用高熔体强度PP、PP部分交联、PP共混改性及PP/无机物复合材料,并分别介绍了这4种方法的国内外研究进展、特点。指出PP化学交联及共混改性仍是今后PP发泡研究的重点及热点。The characteristic of polypropylene （PP） foaming plastic, development situation at home and abroad and general problem in foaming （ low melt strength ） was introduced. The four methods to improve melt strength of PP includes using high melt strength PP, PP crosslinking, PP mixing modification and PP/nanocomposites. The research development at home and abroad of each method and characteristic were summarized. Research on PP chemical crosslinking and mixing modification was emphasis and hot for the future.

关 键 词：聚丙烯 发泡 熔体强度 交联 共混 复合材料 

分 类 号：TQ328.9[化学工程—合成树脂塑料工业] TQ325.14