铜粉对PTFE复合材料力学及摩擦学性能的影响  

The Mechanical and Tribological Properties of Copper Filled PTFE Composites

作　　者：叶素娟[1] 范清[1] 邓联勇[1] 王有和 

机构地区：[1]广州机械科学研究院密封研究所,广东广州510700 [2]金川集团设备研究所,甘肃金昌737100

出　　处：《润滑与密封》2010年第9期60-64,68,共6页Lubrication Engineering

基　　金：国家科技十一五支撑计划(2006BAF01B05-03)

摘　　要：通过向聚四氟乙烯(PTFE)中添加不同含量的铜粉,研究其力学性能和摩擦磨损性能;研究不同形状和粒径青铜粉,以及铜粉中其他成分对PTFE材料性能的影响。结果表明:铜粉质量分数为40%时,PTFE复合材料具有良好的力学性能,其耐摩擦磨损性能适中。在相同含量的青铜粉/PTFE复合材料中,铜粉粒径越大,其耐磨损能力越差,磨痕宽度越大,铜粉粒径越小,其复合材料的耐磨损性能越好,磨痕宽度越小。不规则青铜粉填充的PTFE复合材料具有较好的力学性能,但是球形铜粉填充的PTFE复合材料具有较好的耐磨损性能。青铜粉中的锡、铅、锌具有良好的减磨效果。Through filling different content of copper in the polytetrafluoroethylene （ PTFE ）, the mechanical properties and tribologieal performances were studied. The effect of different shapes and sizes bronze powder and other components in the bronze on the properties of PTFE materials was discussed. The results show that PTFE composites with 40% bronze have better mechanical properties and good antiwear performances. In the PTFE composite materials with the same amount of bronze powder,the antiwear performances decrease with the increase of bronze powder particle size, and increase with the decrease of bronze powder particle size. PTFE composites filled with irregular bronze powder have better mechanical properties,but PTFE composites filled with spherical copper powder have better wear resistance. The tin, lead, zinc in bronze powder have a good friction reducing effect.

关 键 词：聚四氟乙烯 铜粉 力学性能 摩擦学性能 

分 类 号：TH117.1[机械工程—机械设计及理论]