低密度聚乙烯/聚苯乙烯合金材料的发泡行为  

Foaming Behavior of Polyethylene/Polystyrene Composite

作　　者：徐定红[1] 龚维[1,2] 张纯[1] 朱建华[1] 何力[1] 

机构地区：[1]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014 [2]贵州师范大学材料与建筑工程学院,贵州贵阳550014

出　　处：《塑料》2012年第5期48-51,共4页Plastics

基　　金：贵州师范大学博士启动基金项目

摘　　要：通过共混挤出制备低密度聚乙烯/聚苯乙烯合金材料,在二次开模条件下制备微孔发泡LDPE/PS合金材料,分析了不同含量的PS对微孔发泡合金材料发泡行为的影响规律。实验结果表明:PS的添加量影响合金材料的发泡行为。当PS质量分数为15%时,微孔发泡合金材料的密度最小,泡孔分布均匀且孔径较小。The low density polyethylene/polystyrene alloy materials were prepared by blending extrusion. Then the microcellular foam PP/PS composite were made under the condition of twice-open mold by chemical foaming injection molding technology. Through analyzing the foaming behavior of microcellular foaming composite,the results showed the foaming behavior of polyethylene/polystyrene composite had been affected by the different content of PS, When the content of PS was 15 % ,the density of the composite were the lowest, and the bubble holes uniformly distributed.

关 键 词：低密度聚乙烯 聚苯乙烯 微孔发泡 发泡行为 孔径 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TQ325.25