【摘要】 研究了聚乙烯吡咯烷酮(polyvinyl pyrrolidone,PVP)、油酸(olei cacid,OA)和硅烷偶联剂(r–缩水甘油氧基丙基三甲氧基硅烷,KH560)3种分散剂表面修饰的蛇纹石粉体在基础油500SN中的分散性能,并对3种分散剂修饰的超细蛇纹石粉体作为添加剂加至基础油中,在四球摩擦副上做摩擦磨损性能的测试。结果表明:不同分散剂在基础油500SN中分散效果从高到低依次为:OA>PVP>KH560;OA,PVP和KH560修饰的蛇纹石粉体的油润滑添加剂的磨斑直径分别降低了17%,4.26%和12.8%,摩擦系数分别减小了35.5%,2.48%和16.9%。OA添加剂的磨斑表面生成了修复镀层。更多还原

【Abstract】 An investigation of dispersion properties of ultra-fine serpentine modified by three dispersants:polyvinyl pyrrolidone (PVP),oleic acid(OA)and silane coupling agent(KH560)in 500SN base oil was investigated.The ultra-fine serpentine specimens with three different surfactants were considered as different additives in the base oil and tribology tests were carried out using a fric- tion-wear tester.The results show that effect of the three surfactants on the dispersion property in the base oil 500SN decreases ac- cording to this order:OA>PVP>KH560.The wear scar diameter of the OA,PVP and KH560 additives decrease by 17%,4.26%and 12.8%,respectively.The friction coefficients of OA,PVP and KH560 decrease by 35.5%,2.48%and 16.9%.The friction surface of the OA additive forms a repair coating.更多还原