十二烷基二硫代三嗪的合成及摩擦学性能研究

合成了一种新型无灰、无磷三嗪衍生物十二烷基二硫代三嗪 (TOBT)。以菜籽油作为基础油，采用MRS-10A型四球摩擦磨损试验机考察了其摩擦学性能，分析了载荷、摩擦时间、添加剂添加量对菜籽油摩擦学性能的影响。结果表明，该添加剂能大幅度提高菜籽油的抗磨减摩性能和承载能力，是一种性能良好的润滑油添加剂。与二硫化十二烷（TOTT）的摩擦学性能相比，TOBT的抗磨减摩作用更为突出，说明硫含量较高，分子内存在致密三嗪杂环的添加剂具有更好的摩擦学性能。

SYNTHESIS AND TRIBOLOGICAL BEHAVIOUR OF TRIAZINE DERIVATIVE AS ADDITIVE OF RAPESEED OIL

A new ashless and non-phosphorus containing triazine derivative, 2,4,6-tri (n-dodecyldithio)-1,3,5-s-triazine (TOBT), was prepared. Using rapeseed oil (RSO) as base oil, the effects of load, testing time and additive dosage on the tribological performance of RSO with and without additives were investigated by a four-ball test machine. Results showed that TOBT used as additive of RSO exhibited good anti-wear and friction reducing properties, as well as enhanced load-carrying capacity. The friction coefficient of RSO having TOBT was lower as compared with that of RSO. The tribological performance of RSO having TOBT was better than that of RSO having dithiododecyl (TOTT) additive, which indicated that the higher sulfur content and the existence of compact triazine structure in TOBT could effectively improve its tribological performance as additive.