对甲苯酚-AOT双组份超分子凝胶的制备及摩擦学性能研究  

Preparation and Tribological Performance of Two-Component Supramolecular P-cresol-AOT Gel

作　　者：张嘉莹 于强亮[1,3] 刘钦泽 蔡美荣 周峰[1] 刘维民 ZHANG Jiaying;YU Qiangliang;LIU Qinze;CAI Meirong;ZHOU Feng;LIU Weimin(State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Shandong Yantai 264006,China;School of Materials Science and Engineering,Qilu University of Technology,Shandong Jinan 250353,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,北京100049 [3]烟台先进材料与绿色制造山东省实验室,山东烟台264006 [4]齐鲁工业大学材料科学与工程学院,山东济南250353

出　　处：《摩擦学学报》2022年第2期366-377,共12页Tribology

基　　金：国家重点研发计划(2021YFA0716304);国家自然科学基金项目(21972153,U21A20280);载人航天预研项目(040101);中国科学院青年创新促进会(2018454)资助。

摘　　要：本文中报道了一类制备方法简单且成本较低的双组份超分子凝胶,其具有良好的减摩抗磨性能.双组份凝胶的两种凝胶因子选择的是对甲苯酚(p-cresol)和琥珀酸二(2-乙基己基)酯磺酸钠(AOT),它们在基础油中共同作用形成凝胶,将该双组份凝胶因子简称为p-cresol-AOT.该双组份凝胶因子具有很强的自组装能力,可以凝胶化多种润滑油,包括矿物润滑油、合成润滑油和全配方商品润滑油等.本文中通过氢谱核磁共振、红外光谱和RS6000旋转流变仪对凝胶的自组装机理和流变学进行研究,结果显示凝胶因子通过分子间非共价键作用发生超分子自组装.采用微动摩擦磨损试验机(SRV-IV)对超分子凝胶润滑剂进行摩擦学评价,结果显示,p-cresol-AOT在不同的基础润滑油中形成的凝胶均能提高该基础油的耐极压,减摩和抗磨性能.该凝胶润滑剂之所以具备良好的润滑性能主要归结于凝胶因子起到了润滑添加剂的作用,在摩擦过程中形成有效的边界保护膜从而减少了摩擦副的直接接触,起到了良好的润滑保护作用.In recent years,supramolecular gel lubricants,as a new type of lubricant,have attracted a lot of people’s attention.Generally speaking,supramolecular gel lubricants include gelators and solvent,among which solvent can be water,oil,organic solvent or ionic liquid.Gels are formed by self-assembly between gelators through non-covalent interaction,and three-dimensional network structure is formed in the solvent.As a lubricant,the gel has good thixotropic and creep recovery properties and can be converted into a liquid during friction tests,thus reducing the problems of machine resistance and heat dissipation.According to the literature,gelators can form gel lubricants in ionic liquid,base oil and water for the field of lubrication.Gels are formed by self-assembly in various solvents by non-covalent interaction between molecules.And gels formed in base oil is a very important lubricant(base oil includes mineral oil,synthetic base oil,synthetic engine oil,synthetic lubricating oil and ionic liquid).Supramolecular gel lubricants not only have good thixotropy and thermal reversibility,but also can significantly improve the lubrication performance.Although supramolecular gel lubricants have many excellent characteristics,they also have some problems,such as the complexity of gelators and high synthesis cost.To settle these problems,a kind of two-component gel lubricant were reported in this paper.The physical and chemical performances of the gel can be adjusted by transposing the gelators composition.Tribological experiments showed that the gels had satisfactory anti-friction and anti-wear effect,moreover,the two-component gels had the advantages of simple preparation and adjustability.Therefore,the two-component gel lubricant had a good application prospect.As other studies have reported,the two-component gelators were bound by non-covalent bonds(such asπ-πstacking,hydrogen bonding and electric dipole moment).It has been reported that gelators can gel only a few numbers of base oils.In order to generalize the applica

关 键 词：双组份超分子凝胶润滑剂 超分子自组装 蠕变恢复 摩擦学性能 减摩抗磨 

分 类 号：TH117.1[机械工程—机械设计及理论]