作　　者： ; ; ; ; (张永振）;

机构地区： 河南科技大学化工与制药学院

出　　处： 《塑料工业》 2012年第10期41-44,69,共5页

摘　　要： 以硫酸钙晶须(CSW)作为填料填充改性聚四氟乙烯(PTFE),采用模压成型烧结工艺制备了不同CSW含量的PTFE复合材料;利用摩擦磨损试验机研究了偶联剂改性CSW和未改性CSW对PTFE复合材料摩擦学性能的影响,并利用扫描电子显微镜(SEM)对PTFE复合材料的磨损表面进行了微观分析。结果表明:随着CSW用量的增加,PTFE复合材料的硬度和摩擦因数逐渐增大,磨损量先减小而后增大;相对于未改性CSW,偶联剂改性CSW填充PTFE复合材料具有较低的摩擦因数和较高的耐磨损性能。 Polytetrafluoroethylene （PTFE） was filled with calcium sulfate whiskers （CSW） as filler and PTFE composites with different content of CSW were prepared by compression molding and follow-up sintering. The effects of coupling agent modified CSW and CSW without modification on the tribological behavior of PTFE composites were investigated on a friction and wear tester. The worn surface of PTFE composites was analyzed by SEM. The results showed that with increasing content of CSW, the hardness and friction coefficient of PTFE composites augmented gradually and the wear mass loss firstly decreased and increased then. Comparing with unmodified CSW, the friction coefficient of PTFE/CSW treated by coupling agent composites was lower and the wear resistance was higher.

关 键 词： 硫酸钙晶须 聚四氟乙烯 复合材料 摩擦磨损性能

领　　域： [化学工程]