Thickener as an important ingredient affects the performance characteristics of lubricating grease. Here, seven lithium complex greases (LCGs) were prepared by saponification of 12‐OH stearic acid and low molecular weight dibasic acids (including adipic acid, sebacic acid, phthalic acid, dodecanedioic acid, and the combination of sebacic acid and phthalic acid in different molar ratios) with LiOH, using polyalphaolefin (PAO 40) as base oil. Physical properties and lubrication function of as‐prepared LCGs were evaluated in detail, and the friction mechanism was explored via analysis on the morphologies and composition of worn surfaces. Results illustrate that the saponification of mixed 12‐OH stearic acid and sebacic acid with LiOH provides good thickener for improving the physico‐chemical performance of LCG, while the thickener prepared by 12‐OH stearic acid and adipic acid with LiOH enhances lubrication function of LCG, mainly depending on synergy of grease film and tribo‐chemical reaction film.

中文翻译：

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通过二元酸调节锂复合润滑脂的性能特征

增稠剂作为重要成分会影响润滑脂的性能特征。在这里，通过将12-OH硬脂酸和低分子量二元酸（包括己二酸，癸二酸，邻苯二甲酸，十二烷二酸以及癸二酸和邻苯二甲酸的组合）皂化，制备了七个锂复合润滑脂（LCG）。使用聚α-烯烃（PAO 40）作为基础油，使用LiOH混合。详细评估了所制备LCG的物理性能和润滑功能，并通过分析磨损表面的形态和成分来探索其摩擦机理。结果表明，混合的12-OH硬脂酸和癸二酸与LiOH的皂化作用为改善LCG的理化性能提供了良好的增稠剂，