四丁基氯化铵-聚乙二醇低共熔溶剂摩擦学性能研究  

Tribological Properties of Tetrabutylammonium Chloride-Polyethylene Glycol Deep Eutectic Solvents

作　　者：李卓成 马瑞[1] 张恩惠 董均阳 李维民[1,3] 刘海超 LI Zhuocheng;MA Rui;ZHANG Enhui;DONG Junyang;LI Weimin;LIU Haichao(State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou 730000,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Zibo Innovation Center of High-End Synthetic Lubricating Materials,Shandong Zibo 255000,China)

机构地区：[1]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000 [2]中国科学院大学材料与光电研究中心,北京100049 [3]淄博高端合成润滑材料创新中心,山东淄博255000

出　　处：《摩擦学学报(中英文)》2025年第2期253-264,共12页Tribology

基　　金：国家自然科学基金项目(51975560,52305227);泰山学者工程和山东省重点研发计划项目(2020CXGC011002)资助.

摘　　要：低共熔溶剂低毒性、合成工艺简单、低成本、低饱和蒸汽压和结构多样且可设计等特点,使其具有成为新型润滑材料的潜力.本文中以3种不同分子量的聚乙二醇(分子量200、400和600)作为氢键供体,以四丁基氯化铵作为氢键受体,成功合成了3种低共熔溶剂(TP2、TP4和TP6),并对其理化性能和摩擦学性能进行了测试.最后使用多种技术对摩擦表面进行分析,以探究所合成低共熔溶剂的润滑机理.研究表明:合成的低共熔溶剂倾点低、热稳定性好;在25℃和100 N(2.17 GPa)往复滑动摩擦条件下具有优异的抗磨减摩性能.通过摩擦表面分析发现,低共熔溶剂优异的摩擦学性能归因于其在润滑界面形成的吸附膜和摩擦作用生成的摩擦化学反应膜.The development of technology and industry has necessitated new performance standards for lubricant,which requires that the lubricant not only superior friction-reducing anti-wear performances,but also non-flammability,low saturation vapor pressure,low toxicity,simple preparation.Over the past two decades,ionic liquids have received widespread attention due to their exceptional tribological performances,high temperature resistance,non-volatile nature,and designable structure.However,their application in industrial settings has been somewhat constrained by the complex synthesis process and elevated cost.Deep eutectic solvent(DES),as a novel class of functional liquid exhibit physical properties akin to ionic liquids while offering the benefits of a more straightforward synthesis process and reduced cost.Consequently,they are poised to meet the performance demands of industrial lubricant development and anticipated to emerge as a new type of lubricant.Deep eutectic solvent(DES)is solvent composed of hydrogen bond donors(HBD)and hydrogen bond acceptors(HBA)in a certain molar ratio,which is subject to hydrogen bonding so that their melting point is lower than the melting points of the individual components.In this study,three deep eutectic solvents(TP2,TP4,and TP6)were successfully prepared by using polyethylene glycol with molecular weight of 200,400,and 600 as the hydrogen bonding donor,and tetrabutylammonium chloride(TBAC)as the hydrogen bonding acceptor.Shift of characteristic peaks in NMR and FTIR spectra verified the successful preparation of DESs.The physicochemical properties of DESs had been characterized.It was shown that the prepared DESs had low pour point,good thermal stability and great viscosity-temperature performance.In oscillating sliding contacts at 25℃and 100 N(2.17 GPa),compared with the ester base oil,three prepared DESs exhibited excellent friction reduction and anti-wear performances.The friction coefficients of TP2,TP4 and TP6 were 64.77%,60.64%and 65.96%of those of an ester base oil,and th

关 键 词：低共熔溶剂 润滑剂 边界润滑 摩擦学性能 

分 类 号：TH117.2[机械工程—机械设计及理论]