Graphene-containing frictional regulator and preparation method thereof

A friction modifier, graphene technology, applied in additives, petroleum industry, lubricating compositions, etc., can solve the problems of chemical corrosive wear, coagulation and precipitation, difficulties, etc., achieve excellent self-lubrication, stable chemical properties, reduce The effect of wear rate

Active Publication Date: 2015-02-11
GUANGDONG DONGGUAN TEAMRUN ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two types of friction modifiers on the market, one is chemical friction modifiers, oil-soluble additives containing polar or active elements, its disadvantage is that it will cause chemical corrosion wear; the other is mechanical wear modifiers, mainly It is non-oil-soluble, lubricating solid particles dispersed in oil, such as graphite, molybdenum disulfide, boron oxide, polytetrafluoroethylene (PTFE), etc., its disadvantage is that the particles are large and the shape is not suitable, often due to dispersion stability If it is not good, it will cause condensation and precipitation, so that it will fail quickly or block the filter screen, resulting in difficulty in oil supply

Method used

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  • Graphene-containing frictional regulator and preparation method thereof
  • Graphene-containing frictional regulator and preparation method thereof
  • Graphene-containing frictional regulator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A friction modifier containing graphene, which is prepared from the following raw materials in mass percent:

[0051] Nanographene: 0.3%;

[0052] Nano graphite particles: 3%;

[0053] Ethylene-propylene copolymer 0.5%:

[0054] Bis-succinimide: 3.5%;

[0055] Base Oil: 95%

[0056] Specific steps are as follows:

[0057] 1) Preparation of nano-graphite particles

[0058]Abrasive preparation: 20% of graphite powder, 0.1% of cellulose, 0.5% of sodium methylene bis-naphthalene sulfonate, 0.5% of 25% ammonia water, and the balance of pure water in mass percent;

[0059] Crushing: the above-mentioned abrasives are ground and pulverized in a horizontal sand mill;

[0060] Classification: the above-mentioned graphite powder is classified by high-speed centrifugation at a speed of 5000 rpm;

[0061] Purification: add hydrochloric acid to the above-mentioned classified graphite powder to purify and condense, and adjust the pH to 2.3, press filter after condensing, and ob...

Embodiment 2

[0068] A friction modifier containing graphene, which is prepared from the following raw materials in mass percent:

[0069] Nano graphene: 0.5 parts

[0070] Nano graphite particles: 5 parts

[0071] Styrene-diene copolymer: 1%

[0072] Succinate / Benzylamine: 2%

[0073] Base oil: balance;

[0074] Specific steps are as follows:

[0075] 1) Preparation of nano-graphite particles

[0076] Abrasive preparation: 25% of graphite powder, 0.3% of cellulose, 0.2% of sodium methylene bis-naphthalene sulfonate, 0.7% of 25% ammonia water, and the balance of pure water in mass percent;

[0077] Pulverization: the above-mentioned grinding material is circularly ground and pulverized by a horizontal sand mill; classification: the above-mentioned graphite powder is classified by high-speed centrifugation at a speed of 6000 rpm;

[0078] Purification: add hydrochloric acid to the above-mentioned classified graphite powder to purify and condense, and adjust the pH to 2.5, press filter ...

Embodiment 3

[0085] A friction modifier containing graphene, which is prepared from the following raw materials in mass percent:

[0086] Nanographene: 1%

[0087] Nano graphite particles: 5%

[0088] Cetyl-N-vinylpyrrolidone copolymer: 5%

[0089] Succinate: 3%

[0090] Base oil: balance;

[0091] The specific preparation method is carried out according to the steps of Example 1; in the grinding material preparation step, graphite powder 27.6%, cellulose 0.4%, sodium methylene bis-naphthalene sulfonate 0.3%, 25% ammonia water 0.6%, pure The water balance; in the step of dispersing and degumming, it is calculated by weight percentage: graphite filter cake: 29%, cellulose: 0.3%, polyvinyl alcohol: 0.2%, 25% ammonia water: 0.7%, pure water: the balance.

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Abstract

The invention discloses a graphene-containing frictional regulator and a preparation method thereof. The graphene-containing frictional regulator comprises the following components in percentage by mass: 0.3-1.2% of nano graphene, 3-8% of nano graphite particles, 1-6% of polymer protective colloid, 0.5-5% of dispersing agent, and the balance of base oil. Through the frictional regulator, the lubrication between metal pieces on the surface of a friction pair can be greatly promoted, and the wear is reduced; the anti-wear, lubrication, remediation and sealing properties can be increased to form synergistic effect, antiwear and lubrication effects of an engine on the severe wear when the engine is in cold starting can be enhanced, and the service life of the engine can be prolonged. The system has excellent dispersion and suspension properties as well as has no precipitation through an oil phase dispersion technology, and the frictional regulator is stable in the performances of the colloid.

Description

technical field [0001] The invention relates to an automotive engine lubricating oil additive, in particular to a graphene-containing friction modifier and a preparation method thereof. Background technique [0002] Along with the raising of socioeconomic condition, automobile has entered common family as main means of transportation. In the 21st century, energy crisis and environmental pollution have become the two major focuses of global attention. The energy consumption of automobiles in the world accounts for 50% of the total oil, and the friction loss of automobiles accounts for 30% of the total power. [0003] Vehicle fuel emits a large amount of solid suspended particles (PM) and carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NO x ), sulfur oxides (SO x ) and other harmful gases, according to detection, 42% of global air pollution comes from traffic vehicles, and it is as high as 60% in big cities. Therefore, reducing frictional power consumption, saving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M177/00C10N40/25C10N30/06
Inventor 纪玉信张树鸿纪双明许俊伟
Owner GUANGDONG DONGGUAN TEAMRUN ELECTRONICS MATERIAL
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