Journal
TRIBOLOGY INTERNATIONAL
Volume 126, Issue -, Pages 39-48Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2018.05.004
Keywords
Mercapto modification; Graphene oxide derivatives; Lubricant additives; High dispersibility
Categories
Funding
- National Natural Science Foundation of China [21272157, 51672191]
- Innovation Fund of Precision Medicine [IFPM2016A003]
- China Postdoctoral Science Foundation [2016M591663]
- Beijing Synchrotron Radiation Facility [SR06033]
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The lubricant additives could be added into vegetable oil to improve the tribological. Two lubricant additives (GO-D and GO-T) were synthesized and characterized by the reaction between the carboxyl of graphene oxide (GO) and 1-dodecanethiol and tert-dodecyl mercaptan, respectively. The dispersion stability and tribological properties of GO-D and GO-T in rapeseed oil were investigated. The results show that the dispersion stability and tribological properties of GO-D in rapeseed oil are superior to that of GO-T, and both of them are better than that of GO. In addition, the surface morphology and chemical analysis of steel ball show that GO-D and GO-T sheets form absorption and tribochemical film on the rubbing surface.
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