物理化学学报 >> 2007, Vol. 23 >> Issue (06): 911-915.doi: 10.3866/PKU.WHXB20070622

研究论文 上一篇    下一篇

含氮杂环润滑油添加剂抗摩擦和膜化学性能

吴华; 范开忠; 李晶; 任天辉; 及开元   

  1. 上海交通大学化学化工学院, 上海 200240; 清华大学摩擦学国家重点实验室, 北京 100084

  • 收稿日期:2006-09-18 修回日期:2006-12-25 发布日期:2007-06-04
  • 通讯作者: 任天辉 E-mail:thren@sjtu.edu.cn

Anti-Wear Performance and Chemical Property of Films of Nitrogen-containing Heterocyclic Lubricating Oil Additive

WU Hua; FAN Kai-Zhong; LI Jing; REN Tian-Hui; JI Kai-Yuan   

  1. School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, P. R. China; State Key Laboratory of Triboloy, Tsinghua University, Beijing 100084, P. R. China

  • Received:2006-09-18 Revised:2006-12-25 Published:2007-06-04
  • Contact: REN Tian-Hui E-mail:thren@sjtu.edu.cn

摘要:

制备了N-二异辛基-2-苯并噻唑次磺酰胺(DIMB)和2-硫酮-苯并噻唑-3-甲基鄄巯基乙酸异辛酯(MBES)两种含氮杂环抗磨添加剂, 用SRV型高温摩擦磨损试验机评价它们在芋类基础油中的抗磨减摩性能, 对它们在不同条件下形成的摩擦膜进行X射线吸收精细结构光谱(XANES)分析, 用原子力显微镜(AFM)分析摩擦膜的表面形貌. 结果表明, 添加剂DIMB和MBES具有很好的抗磨性能, 但没有减摩性能. XANES分析结果表明, 添加剂MBES形成的摩擦膜完全由硫酸亚铁组成, 而添加剂DIMB形成的摩擦膜的次表面和本体主要由二硫化铁组成, 未测量到硫酸盐或硫化铁, 但摩擦膜表面部分被氧化成硫酸亚铁. AFM 测试结果表明, 与含1.5%(w)二烷基二硫代磷酸锌(ZDDP)抗磨添加剂的钢块磨损表面相比较, 分别含1.5%(w)DIMB 和1.5%(w)MBES添加剂的钢块磨损表面出现了深而宽的“犁沟”.

关键词: 含氮杂环化合物, 抗磨, 摩擦膜, XANES, AFM

Abstract:

Two ash-less and phosphorous-free nitrogen-containing heterocyclic anti-wear additives (N-di-isooctyl-2-benzothiazolesulfenamide, DIMB and (2-sulfurone-benzothiazole)-3-methyl-isooctyl thiohydroxy acetate, MBES) were synthesized. Their anti-wear and friction-reduction performances as lubricating oil additives in group Ⅲ base oil were evaluated using SRV high temperature friction and wear tester. The chemistry of their tribofilms was analyzed with X-ray absorption near-edge spectroscopy (XANES), and atomic force microscopy (AFM) was then used to examine the general morphology of the reaction films. The results showed that the two nitrogen-containing heterocyclic compounds possess rather good anti-wear properties, but no friction-reducing performance. According to the XANES analytic results, the tribofilms generated from the additive MBES were mainly composed of FeSO4, whereas the films generated fromthe additive DIMB mainly contained FeS2. The AFMimages revealed that in comparison with the worn surfaces fromzinc dialkyldithiophosphate (ZDDP), the worn surfaces fromthe additives DIMB and MBES, respectively, presented large and deep grooves.

Key words: Nitrogen-containing heterocyclic, Anti-wear, Tribofilm, XANES, AFM

MSC2000: 

  • O645