石油炼制与化工

• 油品与添加剂 • 上一篇    下一篇

5-甲基-2-巯基-1,3,4-噻二唑衍生物的合成及摩擦学性能研究

钱建华1,朱江丽2,郑艳秋2   

  1. 1. 渤海大学科技处;辽宁省功能化合物的合成与应用重点实验室
    2. 渤海大学
  • 收稿日期:2011-01-27 修回日期:2011-03-14 出版日期:2011-08-12 发布日期:2011-08-12
  • 通讯作者: 钱建华

THE SYNTHESIS AND TRIBOLOGICAL PROPERTIES OF 5-methyl-2-mecapto-1,3,4-THIADIAZOLE DERIVATIVES

  • Received:2011-01-27 Revised:2011-03-14 Online:2011-08-12 Published:2011-08-12

摘要: 以5-甲基-2-巯基-1,3,4-噻二唑(MMTD)和水杨酸为主要原料,合成了一种新的噻二唑衍生物--水杨酸硫代-(5-甲基-1,3,4-噻二唑)酯(TM)。利用红外光谱、元素分析、液相色谱、质谱等分析手段对产物进行结构表征,采用热重分析评价产物的热稳定性,利用四球摩擦磨损试验机考察TM在菜籽油中的抗磨减摩性能。结果表明,合成产品TM的热分解温度为225.6 ℃,具有较好的热稳定性;合成产品TM具有良好的抗磨减摩性能,可作为油品的抗磨减摩添加剂,当添加量为0.6%时,其抗磨减摩效果最佳。

关键词: 5-甲基-2-巯基-1,3,4-噻二唑, 摩擦学性能, 水杨酸, 菜籽油, 热稳定性

Abstract: A novel thiadiazole derivative (TM) was synthesized using 5-methyl -2-mecapto-1,3,4-thiadiazole and salicylic acid as main raw materials, and it was characterized by FT-IR, elementary analysis, LC and MS. The thermal stability of TM was evaluated by TGA, and its wear and friction behavior was investigated by a four-ball testing machine using rapeseed oil as base oil. Results show that the synthesized TM possesses good thermal stability with a thermal decomposition temperature of 225.6 ℃. Due to its good anti-wear and friction reducing properties,the obtained TM could be used as lube additive, it exhibits an optimum anti-wear and friction reducing performance at an amount of 0.6%.

Key words: 5-methyl -2-mecapto-1,3,4-thiadiazole, tribological performance, salicylic acid, rapeseed oil, thermal stability