摘要
利用四球摩擦磨损试验机考察了三正辛硫基均三嗪(TOTT)在菜籽油中的摩擦学性能.实验结果表明,类化合物具有良好的极压性能,能很大地提高菜籽油的极压性能.利用X射线光电子能谱(XPS)和扫描电子显微镜(SEM)分析了钢球磨损表面典型元素的化学状态,并探讨了该类添加剂的摩擦学机理.利用液质联用考察了该化合物在十六烷中摩擦前后的变化,结果表明,在摩擦过程中,TOTT分子发生了分解,主要是与C原子连接的含S支链从三嗪环上脱落,再与钢球表面发生摩擦化学反应,在钢球表面形成了一层含硫,磷的富氧膜和有机氮复合膜,这种复合膜是添加剂具有优异摩擦学性能的主要原因.
The compound of 2,4,6-trioctyhhio-1,3,5-triazine (TOTT) as additive in rapeseed oil was examined with fourball machine. The results show that the additive greatly incrcased the load-carrying capacity of the base oil. The typical elements chemical status of worn surface of the lubricated stcel ball were analyzed by means of X-my photoelectron spectroscopy (XPS) and scanning electron micros copy(SEM). And the paper studied the change of tribological process of TOTT in hexadecane by a LS-MS. The resuhs show that the TOTT decomposed in the tribological process, the S-containing branch connecting with triazine ring was off, reacted with the freshly steel ball surface, to form a protective film containing ferric sulfide, ferric sulfate, organicsulfur compound and organicnitrogen compound on the rubbed surface. The protective film contributed to the increase in the wear resistance and friction reduction.
出处
《华东交通大学学报》
2005年第4期165-168,共4页
Journal of East China Jiaotong University
基金
江西省自然科学基金(0320052)
江西省科技厅项目(0330063)资助