Gear oil composition and preparation method thereof

Abstract

The invention provides a gear oil composition and a preparation method thereof. The gear oil composition comprises the following components in percentage by total weight of100%: 78.5-98.39% of base oil, preferably 85-97%, and more preferably 91-95%, 0.1-4% of a sulfur-containing extreme pressure agent, preferably 0.5-2%, 0.1-4% of a phosphorus-containing anti-wear agent, preferably 0.5-2%, 0.1-3% of fatty acid, preferably 0.3-2%, 0.1-1% of alkylsilane, preferably 0.5-1%, 0.3-6% of hydrophilic fumed silica, preferably 0.5-3%, 0.01-0.5% of a metal deactivator, preferably 0.03-0.1%, 0.3-3% of an antioxidant, preferably 0.5-1.5%. The gear oil composition provided by the invention sufficiently utilizes the wear reduction function of the hydrophilic fumed silica and the extreme pressure anti-wear functions of the sulfur-containing extreme pressure agent and the phosphorus-containing anti-wear agent, and is a gear oil composition with integrated functions of wear reduction, wear resistance, extreme pressure resistance, oxidation resistance and corrosion resistance.

Description

technical field [0001] The invention relates to a gear oil composition and a preparation method thereof, belonging to the field of lubricating oil. Background technique [0002] Gear oil is one of the three major varieties of lubricating oil, which plays a vital role in the power transmission of various equipment. Due to the heavy load of gears during work, good extreme pressure and anti-wear properties are one of the most important characteristics of gear oils. Especially with the development of machinery towards high-load, high-temperature, and high-pressure operations, it is very important for industrial The load-bearing capacity and anti-friction and anti-wear properties of gear oil are increasingly required to prevent tooth surface wear, abrasion, sintering, etc., thereby prolonging its service life and improving power transmission efficiency. [0003] Patent application document CN101280240A provides a gear oil composition, the additives of which are composed of phosp...

AI Technical Summary

Problems solved by technology

[0003] Patent application document CN101280240A provides a gear oil composition, the additives of which are composed of phosphite and phosphoric acid ester phosphorus-based extreme pressure agent, nitrogen-based anti-corrosion agent, nitrogen-sulfur-based anti-corrosion agent, viscosity index improver, dialkyl di Compositions such as zinc thiophosphate have moderate extreme pressure and anti-wear properties, but cannot improve the anti-wear properties of the product

[0004] Patent application document CN105524682A prepared a wear self-repairing gear oil by adding 5-20% organic molybdenum wear reducer, which has certain oxidation resistance and extreme pressure and anti-wear properties at different temperatures, and can also protect gears The surface can be repaired to a certain extent, but the molybdenum compound has high requirements on the solubility of the base oil, and it is difficult to prepare a uniform and transparent liquid

[0005] Patent application document CN105555929A relates to a gear oil composition containing a base stock and at least 0.01wt% of friction-reducing additives, the friction-reducing additives include glycerin and / or polyglycerol C12-C24 saturated fatty esters, and the friction coefficient can be reduced to 0.66 or so, but the preparation process of the friction reducer is complicated, and there is no commercially produced commodity

Images