Authors
Cheng JIANG, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China
Yanan WANG, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China
Huaigang SU, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China
Weimin LI, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China
Wenjing LOU, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China
Xiaobo WANG, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Qingdao Center of Resource Chemistry & New Materials, Qingdao 266100, China
Keywords
ionic liquid, friction reducing, anti-wear, antioxidant, multifunctional additive
Abstract
An oil soluble multifunctional protic ionic liquid (IL) was synthesized and its tribological and antioxidant properties in poly alpha olefin (PAO4) were investigated. The tribological results demonstrated that the IL significantly reduced friction and wear of PAO4. The PAO4 blend with IL resulted in an induced oxidation time of 555 min which is 8.2 and 3.5 times higher than that of pure PAO4 and PAO4 with zinc dialkyl dithiophosphate (ZDDP) for the rotating pressure vessel oxidation test. It is likely that free nonylated diphenylamine acted as a radical scavenger to enhance antioxidant performance, while free bis(2-ethylhexyl) phosphate was more prone to adsorb and react with the metal surface to form a phosphorus-rich tribofilm in order to protect the rubbing surface.
Publisher
Tsinghua University Press
Recommended Citation
Cheng JIANG, Yanan WANG, Huaigang SU et al. Synthesis and evaluation of a protic ionic liquid as a multifunctional lubricant additive. Friction 2020, 8(3): 568-576.
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