纳米SiO_2对微发泡聚丙烯复合材料发泡行为的影响  

Effect of Nano-SiO_2 on Foaming Behavior of Microcellular Foam Polypropylene Composites

作　　者：柯昌月[1,2] 赵武学[3,2] 朱建华[2] 朱艳[1,2] 武毅[1,2] 贾仕奎[1,2] 何力[2] 

机构地区：[1]贵州大学材料与冶金学院,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550014 [3]贵州大学化学与化工学院,贵州贵阳550003

出　　处：《塑料科技》2011年第4期55-59,共5页Plastics Science and Technology

基　　金：贵州省优秀人才省长基金项目(200887);贵州省科技重点攻关项目(20063009)

摘　　要：将改性的纳米二氧化(硅SiO2)以不同含量加入到聚丙(烯PP)中,在二次开模条件下制备微发泡PP/纳米SiO2复合材料,分析了纳米SiO2含量对微发泡复合材料发泡行为的影响。结果表明:随着纳米SiO2含量的增加,复合材料的平均泡孔直径减小,泡孔密度增加,当纳米SiO2含量为4%时,复合材料的泡孔直径为16.3μm泡,孔密度达1.41×109个/cm3具,有理想的发泡效果。The different content modified nano-SiO2 was added into polypropylene. The microcellular foam PP/nano-SiO2 composites were made under the twice-mold-opening condition. The effect of different content of nano-SiO2 on foaming behavior of composites was analyzed. The results show that with the increase of nano-SiO2 content, the cell diameter decreases gradually, and the cell density increases gradually. The cell diameter is 16.3μm and cell density is 1.41×109cell/cm3, when the content of nano-SiO2 is 4%. There is an ideal foaming effect in microcellular foam composites.

关 键 词：聚丙烯 纳米二氧化硅 微孔发泡 

分 类 号：TB383.1[一般工业技术—材料科学与工程]