Performance of lithium molybdenum disulfide grease

The compound extreme pressure lithium molybdenum disulfide grease is made of compound lithium soap thickened mineral lubricating oil and adding extreme pressure additives. It has a very high dropping point and excellent high-temperature performance, and is not easy to lose at high temperatures. It has good mechanical stability, small bearing leakage, and long service life. It has good water resistance and is suitable for lubrication in humid environments. Extreme pressure, rust resistance, pumpability and low noise. The operating temperature range is -20 to 160 ° C. The composite extreme-pressure lithium-based grease has been used in car driving tests. Some data show that after running at 2.0 × 104Km, various performance indicators are good, the color is similar to that of new grease, and no loss occurs in summer.

Urea-based greases Greases made from a polyurea-based compound thickened with -NHCON-functional groups can be called polyurea greases. The general polyurea grease has a temperature range of -30 to 160 ° C, and the special polyurea grease has a temperature of -40 to 250 ° C, which can meet the lubrication under high temperature conditions. Polyurea does not soften and drain under high temperature, and does not block the oil road in winter. Because the polyurea thickener does not contain metal ions, unlike other soap-based thickeners, it has a catalytic oxidation effect on the base oil and can inhibit the oxidation of the base oil. Therefore, it has good oxidation resistance and long life. Polyurea has excellent extreme pressure properties, which can effectively prevent vibration and reduce friction coefficient. Urea thickener is organic, has strong hydrophobicity, and can resist the erosion of acid and alkali media. Polyurea can be used in many parts such as automobile wheel hub bearings, electrical appliances, brakes, clutches, etc. Its multi-effect and universal characteristics simplify the lubrication work. There are many raw materials for the production of polyurea grease, and the process conditions are difficult to control, which often cause quality differences. Only with suitable and reasonable formulas and processes can polyurea greases with excellent performance be obtained. The life of automotive wheel bearings cannot usually be determined simply by the analysis of the physical and chemical properties of grease. It is necessary to verify the applicability of wheel bearing grease through bench test and actual use test.