High-low temperature lubricating grease composition and preparation method thereof

Abstract

The invention provides high-low temperature lubricating grease composition. The high-low temperature lubricating grease composition is prepared from components in percentage by mass as follows: 61%-93.7% of chlorophenyl silicone oil, 5%-25% of a di-urea thickener, 1%-10% of polytetrafluoroethylene superfine powder, 0.2%-3% of an antioxidant and 0.1%-1% of a metal deactivator. The invention also discloses a preparation method of the high-low temperature lubricating grease composition. High-low temperature lubricating grease has excellent high-temperature property, can be used in the high-temperature environment at 250 DEG C for a long term, also has excellent low-temperature property, can be normally used in the low temperature environment at subzero 70 DEG C and is the lubricating grease with the widest use temperature range at the high temperature and the low temperature. The provided high-low temperature lubricating grease is applicable to lubrication of work bearings in the wide temperature range under the work conditions of high temperature, low temperature, high speed and the like and applicable to lubricating and protection of bearings required to be operated in high-temperature environments such as aerospace motors, electrical bearings, plastic stretching machines, polyester thermosetting machines, racing car hubs and the like and in the extremely cold regions such as the Antarctic region and the Arctic region.

Description

technical field

[0001] The invention relates to a lubricating grease and a preparation method thereof, in particular to a high-low temperature lubricating grease composition and a preparation method thereof. Background technique

[0002] High and low temperature grease is a kind of multi-purpose grease that can meet certain high temperature requirements and can also be used in low temperature environments. It is widely used in various industrial fields, military industry and aerospace. For example, the lubricating grease used in the precision bearings of the aircraft is not only required to meet the high temperature environment caused by friction with the atmosphere during the lift-off process, but also required to meet the low temperature environment below -50°C or even -70°C in the sky. Another example is the wheel bearings of automobiles. The lubricating grease used also needs to meet the high-temperature working requirements that generate a lot of frictional heat during ...

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