摘要
为了研制PTFE基粘弹-摩擦型阻尼材料,采用机械共混-冷压成型-烧结的工艺制备了石墨、聚苯硫醚、聚醚醚酮混合填充PTFE基复合材料,利用环-块式磨损试验机,在干摩擦条件下考察了复合材料的摩擦学性能,并用扫描电镜观察了磨损表面形貌,研究了复合材料的磨损机制。结果表明:PTFE含量不同的复合材料,随石墨填充量的增大,摩擦因数和磨损率的变化趋势不同,磨损主要由犁削、粘着和疲劳剥落中的一种或几种引起;适当配比的PTFE基复合材料具有较好的摩擦阻尼性能,能够满足粘弹-摩擦阻尼材料的要求。
To develop viscoelastic-tribological damping material ,Polytetrafluoroethylene（PTFE）-based composites filled with graphite, polyphenylene sulfide （ PPS ） and polyether-ether-ketone （ PEEK ） were prepared by mechanical blending, cold compression molding and sintering. With a block-on-ring wear tester, the friction and wear behaviors of composites were investigated under dry sliding condition against 9Cr18 steel. Scanning electron microscope was employed to study worn surfaces of composites. Wear mechanism was analyzed. Results show that the variety trend of friction coefficient and wearrate of composites are complicated as the content of graphite increases, when the content of PTFE is different. The wear resuits from one or several reason among fatigue wear, abrasive and adhesion wear. The PTFE-based composite with proper prescription possesses better tribological damping, so it can meet better demands of viscoelastic-tribological damping material synthetically at rigorous conditions.
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2006年第4期29-31,共3页
Lubrication Engineering
基金
哈尔滨市科技攻关计划基金资助项目(2004AA2CG126)
关键词
聚四氟乙烯
石墨
复合材料
摩擦学性能
polytetrafluoroethylene
graphite
composite
tribological property
