中文摘要：

利用机械共混、冷压成型、烧结等工艺制备了3种复合材料,并利用MRH-3型摩擦试验机考察了不同速度、不同载荷、不同温度下复合材料的摩擦磨损性能.采用JSM-5600LV 扫描电子显微镜观察分析转移膜形貌及磨损机理.实验结果表明,纳米Al2O3 和纳米SiO2 都能提高PPS-PTFE基体的耐磨性,且添加5%的纳米粒子的复合材料耐磨性能最佳.纳米SiO2/PPSPTFE复合材料比纳米Al2O3/PPS-PTFE复合材料更适宜在高温、高速、高载荷工况下工作,两种纳米粒子添加的复合材料磨损机制主要为磨粒磨损.

英文摘要：

PPS/PTFE and two different nanoparticles reinforced PPS PTFE composites were prepared by mechanical blendin-moldin-sintering method. The tribological and wear behavior of the three composites sliding under different load, temperature, velocity were studied with a MRH-3 block on ring friction and wear tester. The worn surface and transfer film of the composites were inspected by scanning electronic microscopy （SEM）, and the abrasion mechanical was discussed. The results showed that with the addition of nano Al2O3 and SlOe , the wear resistance of PPS PTFE blends was improved, and the best anti wear performance was obtained when the content of nano filler reached ,5~. Nano SlOe reinforced composites were more suitable for working under heavy load and high temperal.ure than nano Al2O3 reinforced one. The wear mechanism of the two nanoparticles filled composites was abrasive wear.