摘要
利用MM 2 0 0型摩擦磨损试验机考察了表面处理与未处理纳米Al2 O3 对填充聚四氟乙烯 (PTFE)复合材料摩擦学性能的影响 ,采用扫描电子显微镜观察试样混合效果和磨损表面形貌并分析其磨损机理。结果表明 :填充PTFE摩擦系数比PTFE略有增加。纳米Al2 O3 可以提高PTFE耐磨性 ,表面处理纳米Al2 O3 在PTFE中能较均匀分散 ,其耐磨性比相同含量但未经表面处理的纳米Al2 O3 填充PTFE高一倍。导致PTFE磨损的重要机理是切削和粘着磨损。
The friction and wear properties of polytetrafluoroethylene (PTFE) composites filled with surface treated and untreated nano Al 2O 3 were tested on MM 200 tester. SEM was employed to examine the worn surfaces,shape of worn debris and analyze wear mechanism of the composites.Results indicate that the friction coefficient of the composites increases slightly.Nano Al 2O 3 can improve the wear resistance of the composites.Surface treated nano Al 2O 3 could disperse evenly in PTFE matrix;the wear resistance of the composites filled with treated nano Al 2O 3 could increase by 1 times compared with that of PTFE composites filled with untreated nano Al 2O 3.The wear mechanism causing the wear of PTFE is cutting and adhering.
出处
《中国塑料》
CAS
CSCD
北大核心
2003年第5期36-39,共4页
China Plastics
关键词
聚四氟乙烯
纳米AL2O3
表面处理
摩擦磨损性能
polyterfluoroethylene
nano Al 2O 3
surface treatment
friction and wear behaviour
