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Dai X.Z.,Changshu Institute of Technology | Guo P.,Changshu Institute of Technology | Hong D.M.,Changshu Institute of Technology | Hui J.D.,Suzhou Huifeng Lubricant Co. | And 4 more authors.
Materials Research Innovations | Year: 2015

There are many factors that affect the performance of polyurea grease, such as gelatiniser, base oil, additives, material production process and the formulations. In this study, the preparation of polyurea grease is mainly investigated by changing the production process, which include the refining temperature, the mode of adding of cooling oil, the cooling methods and the frequency of grinding. Meanwhile, the kinds of base oil are also studied. The characteristics of cone penetration, steel net oil, extreme pressure and antiwear properties, water resistance, etc. were studied. The prepared polyurea grease shows a high dropping point, good water resistance, corrosion resistance and very high extreme pressure and antiwear properties. © W. S. Maney & Son Ltd 2015. Source


Wen M.Y.,Changshu Institute of Technology | Guo P.,Changshu Institute of Technology | Hui J.D.,Suzhou Huifeng Lubricant Co. | Hui Z.M.,Suzhou Huifeng Lubricant Co. | And 3 more authors.
Materials Research Innovations | Year: 2015

Graphite, fluorography polymer, polytetrafluoroethylene, molybdenum disulphide and hexagonal boron nitride were used as additives for making polyurea grease. The effects of different additives and combinations of additives on the properties of polyurea grease were investigated. The advanced polyurea greases were prepared by optimising the composition ratio. The prepared polyurea grease showed high-dropping point, oxidation stability, corrosion resistance, anti-water drenching, anti-wear and extreme pressure properties. © W. S. Maney & Son Ltd 2015. Source

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