POE对LDPE发泡行为的影响  

Influence of POE on Foaming Behavior of LDPE

作　　者：莫文江 刘何琳[1,2] 张纯[3] 龚维[1,2,3] 

机构地区：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550014 [2]贵州省无机非金属功能材料重点实验室,贵州贵阳55001 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳5500144

出　　处：《现代塑料加工应用》2014年第1期37-40,共4页Modern Plastics Processing and Applications

基　　金：贵阳市工业振兴计划项目;筑科合同[2012101]3-9号;贵州省重大专项项目;黔科合重大专项字(2012)6023;博士科研启动项目

摘　　要：用化学发泡注射成型技术,在低密度聚乙烯(LDPE)中加入不同牌号聚烯烃弹性体(POE),于二次开模时制备微发泡LDPE复合材料,分析材料本征特性对发泡LDPE复合材料发泡行为的影响。结果表明:LDPE中加入不同牌号POE后,表现出不同黏度;加入8100,8440,8450POE的LDPE复合材料发泡后,泡孔平均直径较大,泡孔尺寸不均匀,有并泡现象存在;而加入8180POE的发泡LDPE复合材料,泡孔直径较小,泡孔尺寸均匀,发泡质量理想,适用于发泡LDPE制品的开发。By taking chemical foaming injection molding technology,microcellular foamed LDPE composites with different brancls POE were made under twice-open mold.The effect of intrinsic characteristics on foaming behavior of foamed LDPE composites was analyzed.The results show that LDPE shows different viscosity with vifferent brands POE; the foamed LDPE composites with 8100 or 8440 or 8450 POE show large cell average diameter,uneven cell size and merged cell phenomenon; however,the foamed LDPE composites with 8180 POE have small cell diameter and uniform cell distribution,foaming quality is good,and they are suitable for the development of foamed LDPE products.

关 键 词：低密度聚乙烯 二次开模 聚烯烃弹性体 发泡行为 复合材料 黏度 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]