引用本文:
杨攀龙, 赵鸿斌, 谭援强, 刘仁德, 韩利芬, 刘艳丽. 环戊胺基二硫代甲酸衍生物合成、表征及作为润滑油添加剂的摩擦性能[J]. 应用化学,
2007, 24(3): 251-255.
Citation: YANG Pan-Longa, ZHAO Hong-Bina, TAN Yuan-Qiangb, LIU Ren-Dec, HAN Li-Fenb, LIU Yan-Lia. Synthesis,Characterization and Tribological Properties of 2-(Piperidine-1-carbonothioylthio) Acetate Derivatives as Lubricant Additives[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 251-255.
Citation: YANG Pan-Longa, ZHAO Hong-Bina, TAN Yuan-Qiangb, LIU Ren-Dec, HAN Li-Fenb, LIU Yan-Lia. Synthesis,Characterization and Tribological Properties of 2-(Piperidine-1-carbonothioylthio) Acetate Derivatives as Lubricant Additives[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 251-255.
环戊胺基二硫代甲酸衍生物合成、表征及作为润滑油添加剂的摩擦性能
摘要:
采用环戊胺基二硫代甲酸钠与不同烷基的氯乙酸酯进行取代反应,合成了一系列5个未见文献报道的环戊胺基二硫代甲酸基乙酸酯新型高效润滑油添加剂。产物用红外光谱、紫外光谱、核磁共振氢谱、核磁共振碳谱、质谱和元素分析测试技术对它们的结构进行了表征,结果表明,其结构与设计的结构吻合。所合成的添加剂油溶性好,能够溶于液体石蜡、乙酸乙酯和菜籽油等有机溶剂中,而难溶于水,本文选用的基础油为液体石蜡。采用热失重分析(TGA)对其热稳定性进行了评价,升温速度为10℃/min,N2气保护,其初始分解温度均高于195℃,最终分解温度达400℃,可满足润滑油添加剂的一般工况使用要求。在四球摩擦磨损试验机上考察了其在液体石蜡中的极压承载负荷(PB值),结果表明,这一类添加剂可以大幅度地提高液体石蜡的承载力,其中效果最好的PB值可达866N,与二烷基二硫代磷酸锌(ZDDP)的承载力(PB值为882N)几乎相当。添加剂分子中烷基链的长短和形状(不论是直链、支链还是环状)对PB值几乎没有影响。
English
Synthesis,Characterization and Tribological Properties of 2-(Piperidine-1-carbonothioylthio) Acetate Derivatives as Lubricant Additives
Abstract:
Five novel compounds as lubricating additives were synthesized from the reaction of sodium piperidine-1-carbodithioate with chloroacetate. Molecular structures of the compounds were confirmed by IR, UV, 1H NMR, 13C NMR, MS and elemental analysis. They are soluble in many organic solvents(liquid paraffin, acetate, rapeseed oil) and insoluble in water. Liquid paraffin was used as a base oil in the work. The thermal stability of the novel compound was evaluated by thermogravimetric analyses(TGA) at a rate of 10℃/min under nitrogen atmosphere. The five derivatives all thermally decompose at above 195℃, and the last degradation point appears at 400℃, indicating that they may be used as the additive of conventional lubrication oil additives. The maximum non-seizure load values(PB values) of the synthetic compounds as additives in liquid paraffin was evaluated with a four-ball machine. The results show that these compounds as additives in liquid paraffin increase the load-carrying capacity. The maximum no-seizure load(866 N) of the oil sample containing 1.0% the novel additive is almost near to the ZDDP(882 N).
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Key words:
- lubricant additive
- / synthesis
- / characterization
- / tribological performance
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