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...

Examples

Embodiment 1

[0011] A compound additive for automotive gear oil, consisting of base oil; antioxidant, anticorrosion agent; metal deactivator; antiwear agent; extreme pressure agent; demulsifier, friction modifier; pour point depressant; foam inhibitor agent; composed of metal magnesium powder and graphite. The base oil is 500SN, 32#, 46#: a combination of three components, and the weight ratio of the three components is 1:1:1. Antioxidant is ashless dialkyl dithiocarbamate, anticorrosion agent is metal sulfonate; metal deactivator is thiadiazide; antiwear agent is dithiophosphate; extreme pressure agent is dioxane antimony dithiophosphate, demulsifier is polyalkoxy polyol, friction modifier is long chain ester; pour point depressant is polyalkyl methacrylate, foam inhibitor is polyacrylate; each component The weight percentage is: base oil 36%; antioxidant 7%; anticorrosion agent 6%; metal deactivator 5%; antiwear agent 5%; extreme pressure agent 4%; demulsifier 8%; friction modifier 4% ...

Embodiment 2

[0021] A compound additive for automotive gear oil, consisting of base oil; antioxidant, anticorrosion agent, metal deactivator, antiwear agent, extreme pressure agent, demulsifier, friction modifier, pour point depressant, foam inhibitor Agent, metal magnesium powder, graphite composition. The base oil is a mixture of minus four lines and 150BS, and the weight ratio of the two components is 2:1. Antioxidant is ashless dialkyl dithiocarbamate, anticorrosion agent is metal sulfonate; metal deactivator is thiadiazide; antiwear agent is dithiophosphate; extreme pressure agent is dioxane antimony dithiophosphate; demulsifier is polyalkoxy polyol; friction modifier is long chain ester; pour point depressant is polyalkylmethacrylate; foam inhibitor is polyacrylate; each component The weight percentage is: base oil 16%; antioxidant 19%; anticorrosion agent 8%, metal deactivator 6%; antiwear agent 7%; extreme pressure agent 6%, demulsifier 10%, friction modifier 5%; pour point depre...

(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...

Examples

Embodiment 1

[0011] A compound additive for automotive gear oil, consisting of base oil; antioxidant, anticorrosion agent; metal deactivator; antiwear agent; extreme pressure agent; demulsifier, friction modifier; pour point depressant; foam inhibitor agent; composed of metal magnesium powder and graphite. The base oil is 500SN, 32#, 46#: a combination of three components, and the weight ratio of the three components is 1:1:1. Antioxidant is ashless dialkyl dithiocarbamate, anticorrosion agent is metal sulfonate; metal deactivator is thiadiazide; antiwear agent is dithiophosphate; extreme pressure agent is dioxane antimony dithiophosphate, demulsifier is polyalkoxy polyol, friction modifier is long chain ester; pour point depressant is polyalkyl methacrylate, foam inhibitor is polyacrylate; each component The weight percentage is: base oil 36%; antioxidant 7%; anticorrosion agent 6%; metal deactivator 5%; antiwear agent 5%; extreme pressure agent 4%; demulsifier 8%; friction modifier 4% ...

Embodiment 2

[0021] A compound additive for automotive gear oil, consisting of base oil; antioxidant, anticorrosion agent, metal deactivator, antiwear agent, extreme pressure agent, demulsifier, friction modifier, pour point depressant, foam inhibitor Agent, metal magnesium powder, graphite composition. The base oil is a mixture of minus four lines and 150BS, and the weight ratio of the two components is 2:1. Antioxidant is ashless dialkyl dithiocarbamate, anticorrosion agent is metal sulfonate; metal deactivator is thiadiazide; antiwear agent is dithiophosphate; extreme pressure agent is dioxane antimony dithiophosphate; demulsifier is polyalkoxy polyol; friction modifier is long chain ester; pour point depressant is polyalkylmethacrylate; foam inhibitor is polyacrylate; each component The weight percentage is: base oil 16%; antioxidant 19%; anticorrosion agent 8%, metal deactivator 6%; antiwear agent 7%; extreme pressure agent 6%, demulsifier 10%, friction modifier 5%; pour point depre...