Tribological and rheological performance of lithium grease with poly-a-olefin and alkyl-tetralin as base oils  

作　　者：Chen Chen Yujie Liu Qiong Tang Hong Xu Mingxing Tang Xuekuan Li Lei Liu Jinxiang Dong 

机构地区：[1]College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,China [2]Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第4期180-192,共13页中国化学工程学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (U1910202, 21978194);the Key Research and Development Program of Shanxi Province (202102090301005);the Fund for Shanxi “1331 Project”;the Shanxi Natural Science Foundation for Young Scientists (202103021223064)。

摘　　要：A new category of lithium greases was synthesized by using poly-a-olefin(PAO8) and alkyl-tetralin as base oil, where the alkyl-tetralins were synthesized by the alkylation of tetralin and olefins. The influence of thickener concentration, alkyl-tetralin content and type of blend oils on the rheological and tribological performance of lithium grease was investigated. The microstructures of soap fibers were measured to reveal the structure-property correlations. The concentration of thickener and alkyl-tetralin content obviously affect the lubricating performance of lithium grease, while the molecular structure of alkyltetralin has no obvious impact on their properties. It was found that alkyl-tetralin could significantly enhance the thickening ability of PAO8 base oils, and decrease the amount of thickeners by 1.5%(mass).Lithium greases prepared using 20%(mass) alkyl-tetralin as co-base oil exhibited high colloidal stability,excellent rheological behaviors and tribological properties.

关 键 词：Lithium grease Complexes RHEOLOGY Tribological properties Preparation 

分 类 号：TE626.4[石油与天然气工程—油气加工工程]