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.
[1]Shanghai Jiao Tong Univ, Minist Educ, Key Lab Thin Film & Microfabricat, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China.
[2]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Ningbo 315201, Zhejiang, Peoples R China.
[3]Chinese Acad Sci, Shanghai Adv Res Inst, Adv Lubricating Mat Lab, Shanghai 201210, Peoples R China.
[4]Shanghai Sixth Peoples Hosp, Shanghai Fengxian Cent Hosp, Dept Orthopaed, South Campus, Shanghai 201404, Peoples R China.
(8.0+极速模式)