Preparation of extreme pressure anti-wear agent and vehicle gear oil containing extreme pressure anti-wear agent

Abstract

The invention belongs to the field of vehicle gear lubricant, and relates to preparation of an extreme pressure anti-wear agent and vehicle gear oil containing the extreme pressure anti-wear agent. The preparation of the extreme pressure anti-wear agent comprises steps as follows: a certain amount of borax is added to a lanthanum nitrate solution and subjected to a reaction for a few hours; then a certain amount of n-butyl alcohol is added to a reaction liquid and subjected to esterification for a few hours; after the reaction, an appropriate amount of lauryl alcohol modified graphene oxide is added and subjected to transesterification, impurities of a reaction product are removed through distillation, and the extreme pressure anti-wear agent is obtained. The vehicle gear oil containing the extreme pressure anti-wear agent comprises components as follows: base oil, the extreme pressure anti-wear agent, ammonium thiophosphate, sulfurized isobutylene, a clearing agent, a dispersing agent, a pour point depressant and a deforming agent. According to the preparation of the extreme pressure anti-wear agent and the vehicle gear oil containing the extreme pressure anti-wear agent, the friction coefficient of the surface of a friction pair is reduced, a rare earth element and a boron element are diffused from the friction surface to a substrate in a friction process so as to form a permeable layer, the wear resistance of a material surface is improved, an extreme pressure anti-wear effect is realized, and properties of good wear resistance, rust resistance, corrosion resistance and the like are achieved.

Description

technical field [0001] The invention belongs to the field of vehicle gear lubricating oil, and in particular relates to the preparation of an extreme pressure antiwear agent and vehicle gear oil containing the extreme pressure antiwear agent. Background technique [0002] The development of the automobile industry has promoted the upgrading of vehicle gear oil, and the increase in truck load has increased the power of drive axle gear transmission, while the geometric dimensions of drive axle gears have not changed much, resulting in increased tooth surface pressure and temperature. After the Second World War, in order to obtain a multi-effect gear oil with both high-speed performance and high-torque performance, phosphorus-containing extreme pressure agents were introduced, and S-P-Cl type multi-effect gear oil was developed. The U.S. military formulated the MIL- L-2105A specification, the extreme pressure agent introduced zinc dialkyldithiophosphate on the original basis, w...

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Problems solved by technology

[0003] Due to the above-mentioned environmental protection problems of traditional extreme pressure antiwear agents, poor multifunctionality, anti-oxidation, anti-cleaning properties and weak repair functions, people have paid more attention to rare earths and their compounds in recent years.

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