二正辛烷基多硫化物与磷酸三甲酚酯在菜籽油中的摩擦学复合效应  

A Study of the Synergistic Effect of Di-n-octyl Polysulfide with Tricresyl Phosphate in Vegetable Oil

作　　者：党昆阳[1] 易红玲[1] 何忠义[2] 任天辉[1] 刘维民[3] 

机构地区：[1]上海交通大学化学化工学院,上海200240 [2]华东交通大学基础科学学院,江西南昌330013 [3]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000

出　　处：《润滑与密封》2006年第6期1-3,35,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(20472051);江西省自然科学基金项目(0520091);江西省教育厅高校科研项目(2005120)

摘　　要：在低温常压下合成了一种油溶性极压添加剂二正辛烷基多硫化物(DOPS);通过四球机考察了DOPS和传统添加剂磷酸三甲酚酯(TCP)间的复配摩擦学性能;用X射线光电子能谱议和扫描电子显微镜分析了钢球磨损表面形貌和元素化学状态。结果显示在TCP、DOPS添加剂及DOPS/TCP复合添加剂的存在下菜籽油(RSO)的承载能力均得到大幅提高;DOPS/TCP质量比为1∶9时的复合添加剂使基础油的摩擦学性能得到了显著提高,表现出了良好的协同效应。在摩擦过程中,添加剂和金属表面发生化学反应,所生成的含FeS2、FeSO4和Fe2(PO4)3边界润滑膜起到了耐极压抗磨减摩作用。A potential good oil-soluble extreme pressure additive-di-n-octyl polysulfide （DOPS） was synthesized at low temperature and under normal atmosphere, its synergistic tribological effect with a traditional additive, tricresyl phosphate （TCP）, in rape seed oil was examined by using four-bali machines. X-ray photoelectron spectroscopy （XPS） and scanning electron microscopy （SEM） were used to investigate the worn surfaces of the steel ball. The results show that the load-carrying capacity of the vegetable oil can be improved greatly by the presence of the TCP and/or DOPS ;the synergistic system shows a good synergistic effect in improving the tribological performance of vegetable oil when DOPS/TCP mass ratios is 1：9. The addictives reacted with steel interface and generated FeS2, FeSO4 and Fe2（PO4）3 boundary lubrication films,which improves the tribological behaviors of vegetable oil.

关 键 词：菜籽油 多硫化物 磷酸三甲酚酯(TCP) 摩擦学性能 协同效应 

分 类 号：TH117.1[机械工程—机械设计及理论]