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以十二烯基丁二酸酐为原料合成了十二烯基丁二酸(DSA)和硫化十二烯基丁二酸(SDSA),并将其铵盐作为水溶性润滑添加剂,用四球摩擦磨损试验机评价了其抗磨减摩性能.采用扫描电子显微镜(SEM)分析了磨斑形貌,用X光吸收近边结构光谱(XANES)对SDSA的铵盐所形成的摩擦和热反应膜进行了表面分析,并初步探讨了其润滑机理.结果表明,在中等负荷下,2种羧酸化合物铵盐均具有良好的抗磨和减摩性能.XANES分析结果显示,SDSA的铵盐所形成的摩擦和热反应膜主要由吸附层和反应层组成.在吸附层中,硫主要以烷基二硫化物形式存在;在摩擦膜中,硫主要以硫酸盐、硫化物形式存在.
Dodecenylsuccinic acid (DSA) and dodecenylsuccinic acid (SDSA) were synthesized from dodecenylsuccinic anhydride, and their ammonium salts were used as water-soluble lubricants with four-ball friction and wear The anti-friction and anti-friction properties of the anti-friction and antifriction films were evaluated by scanning electron microscopy (SEM). The friction and thermal reaction films formed by ammonium salts of SDSA were characterized by X-ray absorption near- The results of XANES analysis showed that the ammonium salts of two kinds of carboxylic acid compounds had good anti-wear and anti-friction properties under medium load.The results of XANES analysis showed that the ammonium salts of SDSA The tribological and thermo-reactive films consist mainly of adsorbed and reactive layers, in which sulfur is predominantly in the form of alkyl disulfides, and in the rubbed films, sulfur is predominantly in the form of sulfates and sulfides.