从磁流变液的配方设计入手,采用四球摩擦磨损实验机研究了不同类型的固体润滑剂对磁流变液摩擦性能的影响,并考察了固体润滑剂在不同触变剂体系和不同基础油体系磁流变液中的配伍性,记录了摩擦系数随时间的变化曲线。结果表明,无机层状结构类固体润滑剂和高分子化合物类固体润滑剂的加入均能有效地改善磁流变液的润滑性能,其中 MoS2在无机层状结构类固体润滑剂中的润滑效果最佳,氮化硼的润滑效果最差。固体润滑剂在以 Si O 2为触变剂的磁流变液体系中的减摩效果优于以高岭土为触变剂的磁流变液体系。与硅油磁流变液体系相比,在矿物油磁流变液体系中聚四氟乙烯和氮化硼能能起到明显的润滑效果,MoS2和石墨的润滑效果变弱。
The effect of several kinds of solid lubricants on the friction behavior of methyl silicon oil-based mag-netorheological(MR)fluid was investigated on a four-ball machine.The compatibility of solid lubricants with different thixotropy agents and kinds of base oil in the MR fluid was researched.The change in friction coeffi-cient of MR fluids with different lubricants was recorded.The results showed that the antifriction property of MR fluid could be improved by the solid lubricants.MoS2 as additive in lubrication of MR fluid had the best an-tifriction property among layered inorganic solid lubricants,the boron nitride had the worst antifriction proper-ty.The antifriction property of the solid lubricant as additive in the SiO2-based MR fluid was better than it in the kaolin-based MR fluid.Compared with methyl silicon oil-based MR fluids,PTFE and boron nitride had a bright antifriction property in the mineral oil-based MR fluids.However,the antifriction property of MoS2 and graphite was weakened in the mineral oil-based MR fluids.
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