钼酸盐离子液体的合成及其润滑性能

发布时间：2018-02-20 17:57

本文关键词： 钼酸盐离子液体摩擦行为润滑油品添加剂　出处：《精细化工》2017年02期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:Using methyl trioctyl ammonium chloride, sodium molybdate and silver nitrate as starting materials, the room temperature ionic liquid of ammonium methyl trioctyl molybdate was synthesized. The structure was characterized by elemental analysis. Thermogravimetric analysis, four-ball friction and wear tester, scanning electron microscope (SEM) and energy spectrometer (EDS) were used to investigate the thermal stability and lubricating properties of the composites. The lubrication mechanism of methyl trioctyl ammonium molybdate in 400SN base oil was preliminarily discussed. The results showed that the addition of 0.5 (mass fraction) molybdenum ionic liquid into base oil could improve the anti-sintering performance of base oil and increase the PD value of the base oil by 24.9%, and increase the maximum calorless content by adding 0.5 (mass fraction) molybdenum ionic liquid to the base oil. The bite load is 23.8 and the diameter of grinding spot is reduced by 34.6.The lubricating property may be improved by the chemical reaction of molybdenum ionic liquid on the surface of steel ball. Chemical deposition films were formed mainly of molybdenum oxides and iron oxides.
【作者单位】：中国石油大学(华东)化学工程学院;沈阳航空航天大学理学院;辽宁大学化学院;辽宁石油化工大学化学化工与环境学部;
【基金】：国家自然科学基金(21471073) 辽宁省重点实验室项目(LZ2014001) 辽宁省百千万人才计划(2014)~~
【分类号】：O645.1;TE624.82

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