NP油溶性离子液体添加剂的制备及其结构对摩擦学性能影响  

Preparation and Effect of Structure on Tribological Properties of NP Oil-Soluble Ionic Liquid Additive

作　　者：王玉荣 谢经堂[1,3] 郭斌 张朝阳 于强亮 蔡美荣 郭峰[1] WANG Yurong;XIE Jingtang;GUO Bin;ZHANG Chaoyang;YU Qiangliang;CAI Meirong;GUO Feng(School of Mechanical&Automotive Engineering,Qingdao University of Technology,Shandong Qingdao 266520,China;Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Shandong Yantai 264006,China;State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou 730000,China;School of Chemistry and Environmental Engineering,Xinjiang Institute of Engineering,Xinjiang Urumqi 830023,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,山东青岛266520 [2]烟台先进材料与绿色制造山东省实验室,山东烟台264006 [3]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 [4]新疆工程学院化学与环境工程学院,新疆乌鲁木齐830023

出　　处：《摩擦学学报(中英文)》2024年第12期1707-1719,共13页Tribology

基　　金：泰山学者工程;山东省自然科学基金项目(ZR2021QE123,ZR2022ZD09);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开放基金项目(LSL-1914)资助。

摘　　要：制备了2种新的磷酸季铵离子液体N22216P和N12121216P,研究了这2种离子液体(ILs)的溶解性能、黏温性能、热稳定性能和防腐性能,探究了室温和高温下它们作为PAO10润滑添加剂的摩擦学性能,并分析了ILs的结构对其润滑性能的影响.结果发现,质量分数为1%的N22216P和N12121216P表现出比1%商业添加剂T204更优异的润滑性能.根据电接触电阻、石英晶体微天平测量、能谱和X射线光电子能谱表征结果,推测这2种ILs在摩擦过程中易吸附在基底表面形成吸附膜,这有助于在钢表面发生摩擦化学反应形成摩擦保护膜,从而起到减摩抗磨作用.此外,还发现:室温和高温润滑下,具有较低空间位阻结构的ILs更易吸附在基底上形成更致密的吸附膜并进一步在钢表面发生反应形成更多的含有抗磨化合物的更致密的润滑膜,因此,空间位阻较小的N22216P具有更优异的润滑性能,这表明ILs作为基础油添加剂的润滑性能受空间位阻结构的影响.Two ammonium phosphate ionic liquids,N.N-Tridodecyl-N-hexadecyldi(2-ethylhexyl) ammonium phosphate(N22216P) and N.N-triethyl-N-hexadecyl di(2-ethylhexyl) ammonium phosphate(N12121216P) were prepared.The dissolution performance,the viscosity temperature performance,thermal stability performance and corrosion performance of two ionic liquids were evaluated in PAO10.The results indicated that the N22216P and N12121216P could be dissolved in base oil PAO10.And the viscosity temperature performance of both ionic liquids was better than that of PAO10.The thermal stability performance of 1% N22216P and 1% N12121216P was higher than that of PAO10and 1% T204.These results showed that the viscosity temperature performance and thermal stability of ionic liquids were enhanced with the increase of alkyl chains.The addition of ionic liquids additives could reduce the corrosion of base oil on friction pairs.What's more,the tribological properties of the N22216P and N12121216P as the additives of PAO10 were explored at room and high temperatures.The effect of alkyl chain structure of the prepared ionic liquids was studied on their lubrication performance.Compared with the commercial additive 1% T204,it was found that1% N22216P and 1% N12121216P exhibited a better lubrication performance and abrasion resistance at room temperature and high temperature.The electrical contact resistance(ECR) measurement,energy dispersive spectrometer(EDS)measurement,Quartz Crystal Microbalance(QCM) measurement and X-ray photoelectron spectroscopy(XPS)measurement were carried out to understand the lubrication mechanism of two ionic liquids as additives more clearly.Based on these characterization results,it was speculated that these two ionic liquids were prone to adsorb on the substrate surface to form an adsorption film during the friction process.This helped to form a dense friction protective film on the steel surface through further frictional chemical reactions.This protective film effectively prevented the direct contact of sliding pairs and

关 键 词：润滑添加剂 离子液体 润滑性能 磨损 润滑机理 

分 类 号：TH117.2[机械工程—机械设计及理论]