Reasons why grease must resist high temperature

Regarding "what is the current situation of the research on molybdenum disulfide lithium grease, analyze the reason why the grease must be resistant to high temperature"?

The lubricating performance of molybdenum disulfide lithium base grease has the greatest influence on the selection of raw materials. Whether it is natural pure disulfide or synthetic molybdenum disulfide obtained by pyrolysis of ammonium tetrathiomolybdate, or fullerene-like nanodisulfide made by pure molybdenum disulfide cathode and pure molybdenum anode through cathode arc evaporation Molybdenum thin films all have a typical layered structure.

Molybdenum disulfide is very resistant to abrasion, and the molybdenum disulfide crystals that are repeatedly rubbed under high load rarely break. At a relative humidity of 45%, the fullerene-like nano-molybdenum disulfide film has very little wear. Analyzing the surface, molybdenum disulfide rarely breaks during friction, and only some of the molybdenum oxide peaks appear on the surface. The fullerene-like nano-molybdenum disulfide film has a weak molybdenum oxide peak under high load and high temperature, which can hardly be detected.

Because molybdenum disulfide has produced such a good tribological performance grease, the study of molybdenum disulfide lithium-based grease is now a widely used energy-saving material. The development of lithium molybdenum disulfide-based grease is a major improvement to grease products.

When choosing a lithium-based grease, first of all, the purpose of using grease should be clarified. According to the role of grease, grease can be sewn into three categories: anti-friction, protection, and sealing. Depending on the part where grease needs to be applied, which role does the grease play? grease.

As a lubrication gift for friction reduction, the range of high and low temperature resistance and the limit of rotation speed: the size of the load should be considered.

As protective grease, it is important to consider the metal in contact, whether the contact medium is water vapor or chemical gas. In terms of the performance of the grease, the protective index of the metal, oxidation resistance, water resistance and other aspects should be considered. .

As sealing grease, you should first consider whether the seal material that is in contact is rubber or plastic, or metal. Especially when rubber and plastic are used as sealing elements, the brand of rubber must be understood, and the appropriate grease should be selected according to the compatibility of the grease with the rubber. The second is to consider the contact medium, such as water, alcohol. Oil. Whether it is static sealing or dynamic sealing. If it is static sealing, it should choose a thicker sealing grease. If it is a dynamic sealing grease, how to choose lithium-based grease should choose a grease with a base oil viscosity that is not too large;

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