接枝改性纳米氧化铝填充PTFE复合材料摩擦学性能研究  

Tribological Properties of PTFE Composites Filled with Grafted Alumina Nanoparticles

作　　者：牛永平[1] 李香燕[1] 张军凯[1] 韩明[1] 张永振[1] 

机构地区：[1]河南科技大学材料摩擦学重点实验室,河南洛阳471003

出　　处：《工程塑料应用》2012年第7期5-8,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(U1034002;51175149);河南科技大学人才科研基金项目(09001146)

摘　　要：合成了含氟分子链接枝改性纳米氧化铝(Al2O3),用接枝改性纳米Al2O3填充聚四氟乙烯(PTFE),采用模压成型法制备了不同接枝改性纳米Al2O3含量的PTFE/纳米Al2O3复合材料;在摩擦磨损试验机上考察了接枝改性纳米Al2O3对PTFE/纳米Al2O3复合材料摩擦学性能的影响,利用扫描电子显微镜对复合材料的磨损表面进行了微观分析。结果表明,接枝改性纳米Al2O3填充PTFE复合材料在保持PTFE低摩擦系数的同时,提高了其耐磨损性能。Fluorinated polymer chain grafted alumina nanoparticles were synthesized.Polytetrafluoroethylene （ PTFE ） nanocomposites filled with grafted alumina nanoparticles were prepared by compression molding.The effects of grafted alumina nanoparticles on the tribological behavior of the nanocomposites were investigated on a tribometer.The abrasion mechanisms of the nanocomposites were investigated by scanning electron microscopy of the abraded surfaces.The results showed that the addition of grafted alumina nanoparticles maintained low friction coefficient and improved the wear resistance of the nanocomposites.

关 键 词：聚四氟乙烯 接枝改性纳米Al2O3 复合材料 摩擦学性能 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业]