Composite additive for automobile gear oil

Abstract

The invention discloses a composite additive for automobile gear oil. The composite additive is basically characterized by consisting of the following components in percentage by weight: 7-9 percent of an antioxidant, 6-8 percent of a corrosion inhibitor, 5-6 percent of a metal passivator, 5-7 percent of an anti-wear agent, 4-6 percent of an extreme pressure agent, 8-10 percent of a demulsifier, 4-5 percent of a friction modifier, 5-7 percent of a pour point depressant, 8-10 percent of a foam inhibitor, 8-10 percent of metal magnesium powder, 4-6 percent of graphite and the balance of basic oil, wherein the antioxidant is ash-free dialkyldithiocarbamate; the corrosion inhibitor is metal sulfonate; the metal passivator is thiadiazole; the anti-wear agent is phosphorodithioate; the extreme pressure agent is dialkyldithioantimony phosphate; the demulsifier is polyalkoxypolyol; the friction modifier is long-chain ester; the pour point depressant is polyalkylmethylpropenoic acid ester; and the foam inhibitor is polyacrylic ester. The composite additive is economical and practical, and is prepared with a scientific preparation method. A preparation scheme is simple, and a prepared product has the advantages of high thermal stability, superior high-temperature extreme pressure property, high oxidation resistance, high wear resistance, prolonging of the demulsifying service life and superior blister resistance than other products of the same type, and is suitable for various types of automobile gear oil.

Description

(1) Technical field [0001] The invention relates to an automotive gear oil additive, in particular to a preparation scheme and a preparation method of a composite additive for automotive gear oil. (two) background technology: [0002] Automotive gear oil is less noticeable among automotive lubricants. It is a lubricant for automotive power systems other than the engine. It transmits power from the engine to the driving part. The transmission part includes one or more gearbox combinations. The main function of automotive lubricants is to provide protection for moving parts such as transmissions and shafts and their mating parts. These parts have gear systems: such as spur gears, worm gears, helical gears, double helical gears, bevel gears, etc.: bearing systems : shaft, bushing roller: sealing system is the output input power shaft and wheel. There is also the friction material of the synchronizer, so the above factors make the automotive gear oil must also be changed. Howe...

AI Technical Summary

Problems solved by technology

However, the current anti-extreme pressure effect of automotive gear oil is not ideal, some preparation schemes have not been carefully analyzed, and the overall performance is poor