Improving the lubrication and anti-corrosion performance of polyurea grease via ingredient optimization  

作　　者：Guanlin REN Xiaowen SUN Wen LI Hao LI Lin ZHANG Xiaoqiang FAN Dongshan LI Minhao ZHU 

机构地区：[1]Tribology Research Institute,School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China [2]Key Laboratory of Advanced Technologies of Materials(Ministry of Education),School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China [3]State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Friction》2021年第5期1077-1097,共21页摩擦（英文版）

摘　　要：Thickener formulation plays a significant role in the performance characteristics of grease.The polyurea greases(PUGs)were synthesized using mineral oil(500SN)as the base oil,and by regulating the reaction of diphenylmethane diisocyanate(MDI)and different organic amines.The as‐prepared PUGs from the reaction of MDI and cyclohexylamine/p‐toluidine exhibit the optimum physicochemical and friction‐wear properties,confirming that the regulation of thickener formulation can improve the performance characteristics of grease,including friction reduction,wear,corrosion resistance,and load‐carrying capacity.The anticorrosion and lubrication properties of as‐prepared PUGs depend on good sealing functions and a boundary lubrication film(synergy of grease‐film and tribo‐chemical reaction film),as well as their chemical components and structure.

关 键 词：THICKENER polyurea grease(PUG) corrosion resistance tribological properties 

分 类 号：TH117.22[机械工程—机械设计及理论]