Modified graphene as novel lubricating additive with high dispersion stability in oil

作     者：Pu WU Xinchun CHEN Chenhui ZHANG Jiping ZHANG Jianbin LUO Jiyang ZHANG Pu WU;Xinchun CHEN;Chenhui ZHANG;Jiping ZHANG;Jianbin LUO;Jiyang ZHANG

作者机构：State Key Laboratory of TribologyTsinghua UniversityBeijing 100084China Tianjin Research Institute for Advanced EquipmentTsinghua UniversityTianjin 300300China Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission MechanismsBeijing Institute of Control EngineeringBeijing 100094China 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2021年第9卷第1期

页      面：143-154页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51527901 and 51335005) 

主　　题：modified graphene dispersity lubricant additives tribo-film 

摘      要：Graphene is a promising material as a lubricant additive for reducing friction and ***,a dispersing method which combines chemical modification of graphene by octadecylamine and dicyclohexylcarbodiimide with a kind of effective dispersant has been successfully developed to achieve the remarkable dispersion stability of graphene in base *** stable dispersion time of modified graphene(0.5 wt%)with dispersant(1 wt%)in PAO-6 could be up to about 120 days,which was the longest time reported so *** the same time,the lubricant exhibits a significant improvement of tribological performance for a steel ball to plate tribo-system with a normal load of 2 *** coefficient of friction between sliding surfaces was~0.10 and the depth of wear track on plate was~21 nm,which decreased by about 44%and 90%when compared to pure PAO-6,***,the analysis of the lubricating mechanisms in regard to the sliding-induced formation of nanostructured tribo-film has been contacted by using Raman spectra and TEM.