微孔发泡聚丙烯(PP)的性能的研究  

Structures and Mechanical Properties of Microcellular Foamed Polypropylene

作　　者：何颖[1] 周丽[1] 龚维[2] 张纯[2] 罗筑[1] 郝智[1] 何力[2] 

机构地区：[1]贵州大学冶金工程与材料科学学院,贵州贵阳550003 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550025

出　　处：《现代机械》2006年第3期67-68,101,共3页Modern Machinery

基　　金：国家863计划课题(编号:2003AA33X080)。

摘　　要：通过“二次开模法”制备了聚丙烯(PP)微孔发泡材料,对拉伸中泡孔的变形过程进行了分析,对几种不同密度的PP 微孔泡沫塑料进行了缺口冲击实验,研究了泡孔直径及密度对材料冲击性能的影响规律,并通过断口形貌的电镜分析,研究了PP微孔发泡材料的破坏机制及增韧机理。The microcellular PP foam was prepared by ＂two times opening mold＂ molding method. By means of SEM , deformation and failure course of microeellular PP have been observed in situ during tension and some microscopic observations for microeellular PP after tensile loading is performed, from which the deformation morphology and failure mechanism of microcellular PP are discussed. The impact experiments of microcellular PP with different densities have been done and their impact properties are investigated. The influence of size of cell and density of microeellular plastics on impact performance was studied.

关 键 词：微孔 发泡 聚丙烯 断口分析 

分 类 号：TQ328.9[化学工程—合成树脂塑料工业] TQ328