环烷酸铋与金属减活剂在润滑脂中的协同作用研究  

Synergistic Effect of Bismuth Naphthenate and Metal Passivator as Additives in Lubricating Grease

作　　者：叶春林 常淑梅 方洪岭 李毅[2,4] 杨慧敏 胡丽天 张松伟[2,4] YE Chunlin;CHANG Shumei;FANG Hongling;LI Yi;YANG Huimin;HU Litian;ZHANG Songwei(School of Chemistry and Chemical Engineering,Inner Mongolia University of Science&Technology,Inner Mongolia Baotou 014010,China;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;Qingdao Center of Resource Chemistry&New Materials,Shandong Qingdao 266071,China)

机构地区：[1]内蒙古科技大学化学与化工学院,内蒙古包头014010 [2]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 [3]中国科学院大学材料与光电研究中心,北京100049 [4]青岛市资源化学与新材料研究中心,山东青岛266071

出　　处：《摩擦学学报》2023年第5期528-536,共9页Tribology

基　　金：国家自然科学基金(51975559,21902080)资助。

摘　　要：本研究中选择三种金属减活剂:苯并三氮唑类金属减活剂(T551)和噻二唑类金属减活剂(DMTD-8和DMTD-12),分别与环烷酸铋进行复配,利用铜腐、滴点和锥入度等方法考察复配添加剂对复合锂基脂基本理化性能的影响规律;然后通过摩擦学试验和表面分析等方法深入研究分析复配的添加剂间协同/对抗作用、对复合锂基脂承载能力及减摩抗磨性能的影响规律与作用机理.结果表明,环烷酸铋和三种金属减活剂的复配添加剂对复合锂基脂的基本理化性能影响较小,三种金属减活剂能够有效抑制环烷酸铋对铜片的腐蚀;环烷酸铋与苯并三氮唑类金属减活剂在极压性能和减摩抗磨性能上几乎没有协同作用,而与噻二唑类金属减活剂的协同作用明显,能够显著提升基础脂的承载能力和减摩抗磨性能,这种优异的协同效果归结于摩擦过程中生成的Fe_(2)O_(3)、Li_(2)O、FeS_(2)和Bi_(2)S_(3)等摩擦化学产物.In this work,three metal passivators,benzotriazole type metal passivator(T551)and thiadiazole derivative type metal passivators(DMTD-8 and DMTD-12)were selected as additives to complex with bismuth naphthenate.The tests such as copper corrosion,dropping point,and penetration were utilized to investigate the physicochemical properties of lithium complex grease with different additives.And the synergistic effects between additives on extreme pressure and friction reducing and antiwear performances were also researched systematically by tribological tests and surface analyses.The physicochemical property test results indicated that three compound additives had little effects on physicochemical properties(such as thermal stability and colloidal stability)of base grease.The grease with and without compound additives processed high dropping point over 300C,which indicated the grease have potentials to be used under high temperature.In the copper corrosion experiment,results indicated that bismuth naphthenate showed corrosion on copper.While after blending three metal deactivators with bismuth naphthenate in base grease respectively,the corrosion of the grease with three compound additives on copper was significantly reduced.Three metal passivators in compound additives could effectively inhibit the corrosion of bismuth naphthenate on copper.The extreme pressure performance of grease was studied by standard test methods.Test results indicated that there was no synergistic effect on extreme pressure performance between benzotriazole type metal passivator T551 and bismuth naphthenate.The synergistic effects between thiadiazole derivative type metal passivators and bismuth naphthenate were remarkable because the values of Pg and Pp increased obviously after blending the individual additive in grease.The frictionreducing and antiwear properties of bismuth naphthenate,three kinds of metal activators and their compound additive package for lithium complex grease were systematically investigated by tribological tests on SRV-V.

关 键 词：环烷酸铋 金属减活剂 添加剂 协同作用 复合锂基脂 

分 类 号：TH117.1[机械工程—机械设计及理论]