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- Title
Improving the lubrication and anti-corrosion performance of polyurea grease via ingredient optimization.
- Authors
Ren, Guanlin; Sun, Xiaowen; Li, Wen; Li, Hao; Zhang, Lin; Fan, Xiaoqiang; Li, Dongshan; Zhu, Minhao
- Abstract
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 anti-corrosion 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.
- Subjects
TRIBO-corrosion; BOUNDARY lubrication; BASE oils; MINERAL oils; CORROSION resistance; LUBRICATION &; lubricants; THICKENING agents
- Publication
Friction (2223-7704), 2021, Vol 9, Issue 5, p1077
- ISSN
2223-7704
- Publication type
Article
- DOI
10.1007/s40544-020-0400-3