Mine grease composition and preparation method

The present invention provides a mine grease composition and preparation methods, thickening agent by the 12-hydroxystearic acid, boric acid, sebacic acid and lithium hydroxide and calcium hydroxide aqueous reactant composition; additives include: B propylene copolymers, extreme pressure agents, rust inhibitors and anti-wear agents. The 12-hydroxy stearic acid, sebacic acid and ethylene-propylene copolymer is added to the base oil, are mixed and heated to 60 ~ 90 ℃, was added lithium hydroxide monohydrate and calcium hydroxide saponification compound containing boric acid 1.5 to 2 hours; with 2 hours raised to 185 ~ 190 ℃, this temperature for 1.5 hours; continue to heat up to 220 ~ 240 ℃, and then naturally cooled to less 120 ℃, followed by adding extreme pressure agents, rust inhibitors and anti-wear agents, post-processing to obtain of the desired product. The grease has excellent high load performance, PD values ​​greater than 315kg achieve low friction lubrication overloaded. Significantly improved water resistance and adhesion while this grease.