Ultra-extreme pressure lubricating grease composition and preparation method thereof

Abstract

The invention relates to the field of lubricants, in particular to an ultra-extreme pressure lubricating grease composition and a preparation method thereof. The ultra-extreme pressure lubricating grease composition comprises the following raw materials in parts by weight: 10-85 parts of a modified inorganic thickening agent, 3-60 parts of base oil, 1-80 parts of an adhesive, 1-8 parts of a functional complexing agent, 0.1-10 parts of an alkaline agent and 0.0001-0.5 part of a metal deactivator, the modified inorganic thickening agent is prepared from the following raw materials: an inorganic thickening agent, ionic liquid, diacetone acrylamide and oxalic acid dihydrazide. The lubricating grease product prepared by the invention is superior to a lubricating grease formula using a traditional thickening agent or an unmodified thickening agent in the aspects of working penetration, dropping point, extreme pressure load, friction coefficient, thermal oxidation stability and the like, and particularly shows more reliable lubrication and protection performance under severe working conditions of high load, high temperature, long service life and the like; the method has a wide industrial application prospect.