添加萘基功能化离子液体润滑脂的摩擦学性能  

Tribological Properties of Naphthyl-Functionalized Imidazolium Ionic Liquids as Additives of Lubricating Grease

作　　者：王慧婷 姚美焕[2] 吴伟[1] 王泽云[1] WANG Huiting;YAO Meihuan;WU Wei;WANG Zeyun(State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering,College of Chemistry and Chemical Engineering,Ningxia University,Yinchuan 750021,China;School of Chemistry and Chemical Engineering,Key Laboratory of Green Chemical Media and Reactions,Ministry of Education,Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals,Henan Normal University,Xinxiang 453007,China)

机构地区：[1]宁夏大学化学化工学院省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏银川750021 [2]河南师范大学精细化学品绿色制造河南省协同创新中心,教育部绿色化学接介质与反应重点实验室,化学化工学院,河南新乡453007

出　　处：《石油学报（石油加工）》2022年第6期1476-1482,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金(51905158);宁夏高等学校科学研究项目(NGY2020014);第四批宁夏托举工程项目(TJGC2019004)资助。

摘　　要：以三氟甲基磺酰胺为阴离子,萘基功能化咪唑为阳离子,合成了2种萘基功能化离子液体——1-萘甲基-3-甲基咪唑二(三氟甲基磺酰胺)离子液体([NMMIm]NTf_(2))和1-萘甲基-3-丁基咪唑二(三氟甲基磺酰胺)离子液体([NMBIm]NTf_(2));并将其添加到聚α烯烃(PAO10)复合锂基润滑脂中,采用四球摩擦试验机考察了其摩擦学性能。结果表明:添加萘基功能化离子液体的复合锂基润滑脂在室温(25℃)和高温(100℃)下均能降低摩擦系数、减小磨斑直径,表现出优异的减摩抗磨性能。通过X射线光电子能谱对磨斑表面元素进行分析,结果表明:萘基功能化离子液体优异的摩擦学性能归因于离子液体中的活性元素N、O、P和S与摩擦副表面的Fe元素发生摩擦化学反应形成的摩擦化学反应膜。Two naphthyl-functionalized imidazolium ionic liquids including 1-naphthylmethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide([NMMIm]NTf_(2))and 1-naphthylmethyl-3-butylimidazolium bis(trifluoromethylsulfonyl)imide([NMBIm]NTf_(2))were synthesized using trifluoromethylsulfonamide as the anion and naphthyl-functionalized imidazolium as the cation.Subsequently,they were added to the poly-alphaolefin(PAO 10)lithium complex grease,and tribological properties were investigated by the four-ball friction tester.The results show that as additives of lithium complex grease,the naphthyl-functionalized imidazolium ionic liquids can reduce the friction coefficient and decrease the wear scar diameter at both 25℃and 100℃.The chemical elements of worn surfaces were analyzed by X-ray photoelectron spectroscope,and the results show that the excellent tribological properties of naphthyl-functionalized imidazolium ionic liquids are attributed to the film which is created by the tribochemical reaction between the active elements(N,O,P,S)in ionic liquids and Fe on the friction surface.

关 键 词：萘基功能化离子液体 复合锂基润滑脂 添加剂 摩擦学性能 

分 类 号：TH117.2[机械工程—机械设计及理论]