纳米SiO_2对聚丙烯微孔发泡行为的影响研究  

The Effect of Nano-SiO_2 on Micro-foaming Behavior of Polypropylene

作　　者：曹太山[1,2] 何力[1,2,3] 张纯[2] 高俊强[2] 吉玉碧[2] 

机构地区：[1]贵州大学材料与冶金学院,贵阳550003 [2]国家复合改性聚合物材料工程技术研究中心,贵阳550014 [3]贵州科学院,贵阳550001

出　　处：《贵州科学》2009年第3期54-57,共4页Guizhou Science

基　　金：国家重点基础研究发展计划(2007CB616912);贵州省科学技术基金(黔科合J字[2008]2005号);贵州省科技计划(黔科合GY字[2006]3009号)

摘　　要：通过二次开模注塑成型法制备了聚丙烯/纳米S iO2复合材料的微孔发泡塑料。研究了S iO2对微孔发泡材料的泡孔结构和力学性能的影响。用扫描电镜对发泡样品的泡孔结构进行了表征。结果表明:在聚丙烯中加入纳米S iO2可以使泡孔直径减小、泡孔密度增加;但对发泡材料与未发泡材料的力学性能改变不大。The microcellular PP foam and PP/SiO2 nano-composites was prepared by ＂two times opening mold＂ injection mounding method. The cell structures of foams were characterized using scanning electron microscope. The effects of nano-silicon dioxide （ SiO2 ） content on cellular structure and mechanical property were investigated. Results show that the cellular structure can be improved through adding nano-SiO2 into polypropylene （PP）, but has little effect on mechanical property of the foamed and un -foamed materials.

关 键 词：纳米二氧化硅 聚丙烯 微孔发泡 

分 类 号：O641.3[理学—物理化学]