摘要
利用M-2000型摩擦磨损试验机考察了载荷以及纳米TiO2/SiO2与玻璃纤维的混合填料对PTFE复合材料摩擦磨损性能的影响,用扫描电子显微镜观察了复合材料磨损后的表面形貌。结果表明：纳米材料与玻璃纤维的协同作用显著改善了材料的摩擦磨损性能,其中纳米TiO2与玻纤填充复合材料的耐磨性较好,磨损量降低了2-3个数量级,其磨损机制是低载荷下为磨粒磨损,高载荷下为疲劳磨损;纳米SiO2与玻纤填充复合材料的摩擦系数与PTFE相近,磨损机制是低载荷下为磨粒磨损,高载荷下为粘着磨损和表面微犁削磨损。
The friction and wear properties of polytetrafluoroethylene（PTFE） composites filled with nano TiO2/SiO2 and glass fibre（GF） were investigated under different loads using the M-2000 tribometer. The worn surfaces of PTFE composites were analyzed by means of the scanning electric microscopy（SEM）. The results show that the cooperation effect of nano materials and GF significantly improves the friction-changing and anti-wear properties of the composites. The PTFE composite filled with GF and nano TiO2 , whose wear mechanism is the abrasive attrition under lower load and fatigue wear under higher load, has better anti-wear property,its wear mass loss decreases 2 to 3 magnitudes; while the composite filled with GF and nano SiO2, whose wear mechanism is the abrasive attrition under lower load and severe surface adhesion and slight cutting under higher load, has its friction coefficient close to PTFE.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2008年第4期624-626,641,共4页
Journal of Materials Science and Engineering
基金
江苏省自然科学基金资助项目(BK2004103)
江苏省农机基金资助项目(GXZ04004)
高等学校博士学科点专项科研基金项目(20060307002)
