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.
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)
关键词
纳米二氧化硅
聚丙烯
微孔发泡
nano- silicon dioxide, polypropylene, microcellular foaming
