固体添加剂和摩擦改进剂对锂基润滑脂性能的影响

Effect of Solid Additives and Friction Modifiers on Lubricating Properties of Lithium Base Greases

针对常用复合锂基润滑脂存在的润滑极压抗磨性不足等问题,研究不同固体添加剂、摩擦改进剂对复合锂基润滑脂极压抗磨减摩性能的影响。结果表明,固体添加剂对复合锂基润滑脂极压抗磨性能影响较大,其中PTFE和二硫化钼组成的复配剂可使润滑脂得到优异的极压和抗磨性能;摩擦改进剂Priolube 3986复酯和硬脂酸复配具有协同作用,可明显增强润滑脂的抗磨减摩性能;固体添加剂和摩擦改进剂对润滑脂的润滑作用可以优势互补,全面提升润滑脂综合性能。

Although the complex lithium grease is the most widely used grease, there still some problems and weakness in lubrication and equipment wear.The influence of performance was studied through different solid additive, friction modi- fier and their respective complex formulation.Result shows that solid additive has a great influence on the extreme pressure anti-wear properties of complex lithium grease;grease could has excellent EP and AW properties by compounding PTFE and MoS2, and it has synergistic effect by compounding Priolube 3986 complex ester and stearic acid, which can enhance reduce friction performance significantly.The compounding of solid additive and friction modifier has complementary advan- tage, overall raise the comprehensive properties of complex lithium grease.