微发泡LDPE复合材料发泡行为的研究  

Study on Foaming Behavior of Microcellular Foamed LDPE Composites

作　　者：刘何琳[1,2] 张纯[3] 刘卫[1,2] 龚维[1,3,2] 

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550014 [3]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《塑料科技》2013年第5期57-60,共4页Plastics Science and Technology

基　　金：贵阳市工业振兴计划项目(筑科合同[2012101]3-9号);贵州师范大学博士科研启动项目;黔科合重大专项字[2012]6023;黔科合专字(2012)76号

摘　　要：以化学发泡注塑成型技术为主线,在二次开模条件下制备微发泡低密度聚乙烯(LDPE)复合材料;通过材料的本征特性分析了弹性体对微发泡LDPE复合材料发泡行为的影响规律。结果表明:LDPE中,弹性体含量为15%时,发泡质量较为理想,泡孔呈规则的圆形,泡孔直径和泡孔密度分别为35.32μm、8.217×106个/cm3;弹性体含量低于和高于15%时,发泡质量较差,不适合于LDPE复合材料的发泡。By taking chemical foaming injection molding technology as main line,the microcellular foam low density polyethylene(LDPE) composites were prepared under the condition of twice-open mold.The effect of elastomer on foaming behavior of microcellular foamed LDPE composites was analyzed according to intrinsic characteristic.The results show that: foaming quality of LDPE composites improves significantly after adding 15% elastomer;cell diameter is 35.32 μm,and cell density is 8.217×106cell/cm3.The foam quality of LDPE composites is poor when the addition of elastomer is more or less 15%.

关 键 词：低密度聚乙烯 二次开模 发泡行为 弹性体 

分 类 号：TQ328[化学工程—合成树脂塑料工业]