摘要
考察了不同含量的纳米Al2O3对青铜粉/聚四氟乙烯(PTFE)摩擦磨损性能和物理机械性能的影响,采用扫描电镜(SEM)观察了复合材料的磨损表面,并分析和探讨了磨损机理。研究发现,纳米Al2O3和青铜粉复合填充可以大大提高PTFE复合材料的耐磨性,表现出良好的协同作用,但会降低复合材料的拉伸强度和断裂伸长率。添加5%纳米Al2O3后,40%青铜粉/PTFE复合材料的磨痕宽度从12.0 mm降低为5.0 mm,体积磨损率从171.40×10-6mm3/(N.m)降低为12.11×10-6 mm3/(N.m)。
The friction and wear properties and mechanical properties of bronze/PTFE filled with different content of nano-A1203 were studied. The worn surfaces of composites were investigated by SEM as well as the abrasion mechanism. The results showed that nano-Al2O3 and bronze exhibited good synergistic effects on the wear resistance of PTFE composites. The wear resistance of PTFE composites filled with nano-Al2O3 and bronze improved greatly but the tensile strength and elongation at break of composites decreased. The wear wide scar of composites filled with 40% bronze and 5% nano-Al2O3 decreased from 12. 0 mm to 5.0 mm, and the volumetric wear rate decreased from 171.40×10^-6mm^3/（N·m） to 12. 11×10^-6mm^3/（N·m）.
出处
《塑料工业》
CAS
CSCD
北大核心
2012年第11期78-81,共4页
China Plastics Industry
基金
国家十二五科技支撑项目(2011BAF09B06)
