Aluminium nitride and copper mixed nanometer lubricating grease additive and application thereof

Abstract

The invention relates to preparation of an aluminium nitride and copper mixed nanometer lubricating grease additive and an application thereof, and belongs to the technical field of lubrication. The nanometer lubricating grease additive disclosed by the invention is prepared from nanometer AIN and nanometer Cu in a mixing manner, wherein the particle size ranges of the AIN powder and the Cu powder are 50-200nm. The obtained additive is added to base lubricating grease, so that not only can the anti-wear antifriction performance of the base lubricating grease be improved, but also the base lubricating grease can act on the surface of a friction pair, the roughness of the surface of the friction pair is improved, and a polishing scratch on the surface is repaired, so that the abrasion loss of the friction pair is reduced, the friction pair and the accuracy are effectively ensured, meanwhile, accumulation of heat on the friction surface is reduced, and the service life of the friction pair is prolonged. The test data show that compared with the lubricating grease to which the additive disclosed by the invention is not added, the friction coefficient of the lubricating grease to which the additive disclosed by the invention is added is reduced by 23.6-15.8%, and the friction durability is prolonged by 6-7 times.

Description

technical field [0001] The invention belongs to the technical field of lubrication, and relates to the preparation and application of an aluminum nitride and copper mixed nano grease additive. Background technique [0002] With the rapid development of modern industry, the operating efficiency of various mechanical equipment has gradually improved, and the requirements for the service life and reliability of bearings have become increasingly stringent. In recent years, many bearing designers and manufacturing experts at home and abroad regard lubricating materials as one of the keys that affect bearing life. According to statistics, about 30% of the damage of rolling bearings is caused by poor lubrication, which shows that lubricants play an important role in achieving the maximum life of bearings, shortening mechanical downtime and improving equipment operating rates. Lubricants for bearings are mainly grease, and improving the quality of grease products can increase beari...

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Problems solved by technology

[0008] In the above patents, inorganic oxides with low thermal conductivity are used in the grease additives, which will easily cause high-temperature accumulation of grease, resulting in a large amount of volatilization of the base oil in the grease and damage to the structure of the thickener.