聚苯酯/MoS_2填充PTFE复合材料对铝合金的摩擦学性能  

Tribological Properties of Polybenzoate/MoS_2 Filled PTFE Composites Against Aluminum Alloy

作　　者：王文东[1,2] 

机构地区：[1]上海材料研究所,上海200437 [2]上海市工程材料应用评价重点实验室,上海200437

出　　处：《润滑与密封》2015年第11期98-103,共6页Lubrication Engineering

基　　金：上海市科学技术委员会应用技术开发专项资金项目(2010-202)

摘　　要：采用冷压-烧结成型工艺制备聚苯酯/Mo S2填充聚四氟乙烯复合材料,考察聚苯酯含量对复合材料力学性能的影响,考察聚苯酯和Mo S2含量对复合材料与铝合金及表面阳极氧化铝合金对摩时摩擦学性能的影响;用扫描电子显微镜观察复合材料和铝合金磨损后的表面形貌。结果表明:填充聚苯酯降低了复合材料的拉伸强度和断裂伸长率,提高了球压痕硬度;随着聚苯酯和Mo S2含量的增加,复合材料对铝合金及表面阳极氧化铝合金的摩擦因数逐步减小,磨损率降低;Mo S2存在时,铝合金及阳极氧化铝合金表面可形成均匀连续的转移膜,表面光滑,从而降低了磨损;阳极氧化后铝合金表面有一层致密的氧化膜,改善了对复合材料对摩时的摩擦学性能。The polytetrafluoroethylene（PTFE） composites filled with polybenzoate/MoS2 were prepared by molding-sinteing method.The influnce of polybenzoate content on the mechanical properties of composites, as well as the influnce of polybenzoate and MoS2 content on the tribological behaviors of composites against aluminum alloy and anodized aluminum alloy were studied.The worn surface of the composite and aluminum alloy were investigated by SEM.The results show that the tensile strength and elongation at break of the composites are reduced, but the ball indentation hardness is increased with the increase of the polybenzoate content.The friction coefficient and wear rate of composites against aluminum alloy and anodized aluminum alloy are decreased with the increase of the polybenzoate and MoS2 content.The uniform and continuous transfer film can be formed on the friction surface of aluminum alloy and anodized aluminum alloy for MoS2 filled into PTFE composite,the friction surface is smooth and the wear is reduced.A dense oxide film is formed on the anodized aluminum alloy surface,which improves the tribological behaviors of composites against aluminum alloy.

关 键 词：聚四氟乙烯 聚苯酯 复合材料 摩擦 磨损 

分 类 号：TH117.1[机械工程—机械设计及理论]