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以甲基三辛基氯化铵、钼酸钠、硝酸银为初始原料,合成了甲基三辛基钼酸铵室温离子液体,并通过红外光谱、核磁共振氢谱、质谱、元素分析对其结构进行了表征。利用热重分析仪、四球摩擦磨损试验机、扫描电镜(SEM)和能谱仪(EDS)考察了其热稳定性能和润滑性能,并初步探讨了甲基三辛基钼酸铵在400SN基础油中的润滑机理。结果表明:在基础油中添加0.5%(质量分数)钼离子液体能提高基础油的抗烧结性能(PD值)24.9%,提高最大无卡咬载荷(PB值)23.8%,降低磨斑直径34.6%。润滑性能的提升可能是由于钼离子液体在钢球表面发生了化学反应,形成了以钼的氧化物和铁的氧化物为主的化学沉积膜。
The methyltrimethylammonium molybdate room temperature ionic liquid was synthesized by using methyltrioctylammonium chloride, sodium molybdate and silver nitrate as raw materials, and characterized by IR, 1HNMR, MS and elemental analysis The structure was characterized. The thermal stability and lubricity of the composites were investigated by TGA, four-ball friction and wear tester, scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The effects of methyltrimethylammonium molybdate on the mechanical properties of 400SN base oil In the lubrication mechanism. The results showed that the addition of 0.5% (mass fraction) molybdenum ionic liquid to the base oil can improve the sinter resistance (PD value) of base oil by 24.9%, increase the maximum cardless bite load (PB value) by 23.8% and reduce the wear spot diameter by 34.6% %. The improvement of lubrication performance may be due to the chemical reaction of the molybdenum ionic liquid on the surface of the steel ball to form an electroless deposited film mainly containing molybdenum oxide and iron oxide.