纳米蒙脱土在聚丙烯微发泡材料中的应用  

Application of Nano-MMT in PP Microcellular Foam Composites

作　　者：龚维[1,2,3] 高家诚[1] 何力[3] 于杰[3] 丁彤[2] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]贵州师范大学材料与建筑学院,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》2009年第9期47-51,共5页Plastics Science and Technology

基　　金：贵州省自然基金项目;黔科合J字[2009]2020号);国家973前期专项(2007CB616912)

摘　　要：将硅烷偶联剂改性的纳米蒙脱土(Nano-MMT),以不同类型(DK1N、DK4、DK1)加入聚丙烯中在二次开模条件下制备微发泡PP/Nano-MMT复合材料,分析了不同类型Nano-MMT对材料的发泡行为与力学性能的影响。结果表明:Nano-MMT的类型为DK4时,泡孔尺寸在18μm左右,泡孔密度为3.94×107个/cm3,冲击韧性提高约30.46%,发泡效果较理想。Modified Nano-MMT with silicane coupling agent was added into polypropylene with different types of DK1N,DK4 and DK1.The microcellular foam PP/Nano-MMT composites was made under the condition of twice-open mold. The influencing effects of different types of Nano-MMT on the foaming behavior and mechanical properties of PP were analyzed. The results showed that when the type of Nano-MMT is DK4,the cell size of this microcellular PP is about 18μm,the cell density is 3.94×10^7/cm^3,and the impact strength is improved by 30.46%;the foaming effect of the composite is fairly ideal.

关 键 词：聚丙烯 纳米蒙脱土 二次开模 力学性能 发泡行为 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]