Evaluating tribological properties of the stearic acid-based organic nanomaterials as additives for aqueous lubricants

被引：14
作者：
Ye, Xiangyuan [1 ]
Wang, Jinqing [2 ]
Fan, Mingjin [1 ]
机构：
[1] Baoji Univ Arts & Sci, Coll Chem & Chem Engn, Shaanxi Key Lab Phytochem, Baoji 721013, Shaanxi, Peoples R China
[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2019年 / 140卷
基金：
中国国家自然科学基金;
关键词：
Water-based lubricant; Surfactant; Friction; Wear; WATER; PERFORMANCE; OIL; SURFACTANT; ANTIWEAR; ENGINE; STEEL; ESTER; WEAR;
D O I：
10.1016/j.triboint.2019.105848
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Lubricant additives can effectively enhance tribological properties of water, but most of them are environmentally hazardous. Based on the solubilization principle of surfactants, the water-insoluble stearic acid (SA) can be dissolved in the sodium dodecylbenzene sulfonate (SDBS) aqueous solution to form a milky white liquid (SSA aqueous solutions). This paper presents an evaluation of tribological properties of SSA solution. Compared with the pure water, the SSA aqueous solution is more effective in reducing the friction and wear of the friction pairs. The enhancements are due to the following aspects: (1) on the surfaces of the metals, the SSA aqueous solution can be spread out more easily to form liquid lubricant films; (2) the adsorbed SDBS films can inhibit the corrosion behaviors of the metals; (3) the continuous SSA films can separate the direct rubbing between the friction pairs. The SSA solutions show promising results in reducing friction and wear for various friction pairs under a range of loads and shearing velocities, and can be used as potential lubricants in various processes.
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页数：8
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