Colloidal Physicochemical Properties and Variation Mechanisms of Lithium Complex Grease under Limited Operating Temperature

2019 ◽  
Vol 49 (4) ◽  
pp. 20180735
Author(s):  
Jiabao Pan ◽  
Shuai Cao ◽  
Jianping Wang
Keyword(s):  
Physicochemical Properties ◽  
Operating Temperature ◽  
Lithium Complex ◽  
Lithium Complex Grease

Research on Mutual Synergy of Antiwear Additives in Lithium Complex Grease

2016 ◽  
Vol 59 (2) ◽  
pp. 330-339
Author(s):  
Wei Yu ◽  
Chunhua Zhang ◽  
Yuanhu Dong ◽  
Tom Reddyhoff
Keyword(s):  
Antiwear Additives ◽  
Lithium Complex ◽  
Lithium Complex Grease

scholarly journals Comparative study on corrosion resistance and lubrication function of lithium complex grease and polyurea grease

Friction ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 75-91
Author(s):  
Guanlin Ren ◽  
Pengfei Zhang ◽  
Xiangyuan Ye ◽  
Wen Li ◽  
Xiaoqiang Fan ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Salt Spray ◽  
Friction Reduction ◽  
Component Structure ◽  
Base Oil ◽  
Lithium Complex ◽  
Polyurea Thickener ◽  
Polyurea Grease ◽  
Lithium Complex Grease

AbstractIn this study, lithium complex grease (LCG) and polyurea grease (PUG) were synthesized using mineral oil (500SN) and polyalphaolefin (PAO40) as base oil, adsorbed onto lithium complex soap and polyurea as thickeners, respectively. The effects of grease formulation (thickener and base oil with different amounts (80, 85, and 90 wt%) on the corrosion resistance and lubrication function were investigated in detail. The results have verified that the as-prepared greases have good anti-corrosion ability, ascribed to good salt-spray resistance and sealing function. Furthermore, the increase in the amount of base oil reduces the friction of the contact interface to some extent, whereas the wear resistance of these greases is not consistent with the friction reduction, because the thickener has a significant influence on the tribological property of greases, especially load-carrying capacity. PUG displays better physicochemical performance and lubrication function than LCG under the same conditions, mainly depending on the component/structure of polyurea thickener. The polyurea grease with 90 wt% PAO displays the best wear resistance owing to the synergistic lubrication of grease-film and tribochemical film, composed of Fe2O3, FeO(OH), and nitrogen oxide.

Kinetic analysis of the model oxidation reaction of synthetic-based lithium complex grease

2009 ◽  
Vol 49 (2) ◽  
pp. 162-166
Author(s):  
L. V. Zheleznyi ◽  
A. A. Papeikin ◽  
L. V. Sachuk
Keyword(s):  
Kinetic Analysis ◽  
Oxidation Reaction ◽  
Lithium Complex ◽  
Lithium Complex Grease
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