【摘要】 采用 MPX- 2 0 0型、MM- 2 0 0型摩擦磨损试验机和往复摆动磨损试验机考察了聚四氟乙烯纤维织物耐磨材料的摩擦学特性 ,比较了不同聚四氟乙烯纤维含量的织物的磨损性能 ,考察了材料在不同使用条件下的摩擦特性 ;并基于磨损表面形貌分析探讨了其磨损机理 .结果表明 :聚四氟乙烯纤维含量越高 ,摩擦系数和磨损量越小 ;按航空标准 ,经过 2 5 0 0 0次往复摆动磨损试验 ,粘结聚四氟乙烯纤维织物衬套的磨损深度小于 0 .15 mm更多还原

【Abstract】 The tribological properties of polytetrafluroethylene fabric (PTFE fabric) were investigated on MPX 200 and MM 200 friction and wear tester and oscillating tester. Comparative friction and wear tests were conducted for PTFE fabrics of 80% and 50% fiber under the lubrication of different liquids. The morphology of the worn surface of the fabrics was examined with an optical microscope. The results show that PTFE content in the fabric influences the friction and wear behavior considerably. Higher content of PTFE results in lower friction coefficient and lower heat generation, and hence smaller wear. The bushes made of PTFE fabrics oscillated for 25 000 cycles according to aviation criterion registers wear depth less than 0.15 mm.更多还原