Oil-soluble graphene compound and preparation method and application thereof

A compound, graphene technology, used in lubricating compositions, petroleum industry, additives, etc., can solve problems such as agglomeration, affecting dispersion stability, and achieve excellent extreme pressure performance, good anti-wear performance, and excellent oil solubility.

Inactive Publication Date: 2019-01-04
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene is prone to agglomeration in lubricating oil and water, which affects its dispersion stability in solvents such as lubricating oil and water.

Method used

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  • Oil-soluble graphene compound and preparation method and application thereof
  • Oil-soluble graphene compound and preparation method and application thereof
  • Oil-soluble graphene compound and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The present embodiment provides an oil-soluble graphene compound, specifically: graphene n-octadecylamide and octadecylmethoxy or ethoxysilane, that is, Γ (CONHC m H 2m+1 ) x [Si(OCH 3 ) z C p H 2p+1 ] y ; where m=18, z=1 or 2, p=18, 1≤x≤100, 1≤y≤100.

[0045] The present embodiment further provides a preparation method of the oil-soluble graphene compound, specifically:

[0046] (1) Add 0.75 ml of DMF and 100 mg of graphene oxide to a 50 ml three-necked bottle, seal it well, ultrasonicate for half an hour, and add 3 ml of thionyl chloride dropwise at a temperature below 10° C. After dripping nitrogen protection, the temperature is raised to 70° C. The reaction was carried out for 24 hours, transferred to a single-necked flask to remove the thionyl chloride by rotary evaporation, and then 10 ml*3 times of toluene was used to dry the residual thionyl chloride to obtain 0.32 g of a black solid.

[0047] (2) Under nitrogen protection, add 0.32g of the first step pr...

Embodiment 2

[0050] The present embodiment provides a kind of oil-soluble graphene compound, specifically: graphene n-octadecyl amide and methyl acetate, i.e. Γ (CONHC m H 2m+1 ) x (CH 2 COOC n H 2n+1 ) y ; where, m=18, n=1, 1≤x≤100, 1≤y≤100.

[0051] The present embodiment further provides a preparation method of the oil-soluble graphene compound, specifically:

[0052] (1) Add 0.75 ml of DMF and 100 mg of graphene oxide to a 50 ml three-necked bottle, seal it well, ultrasonicate for half an hour, and add 3 ml of thionyl chloride dropwise at a temperature below 10° C. After dripping nitrogen protection, the temperature is raised to 70° C. The reaction was carried out for 24 hours, transferred to a single-necked flask to remove the thionyl chloride by rotary evaporation, and then 10 ml*3 times of toluene was used to dry the residual thionyl chloride to obtain 0.32 g of a black solid.

[0053] (2) Under nitrogen protection, add 0.32g of the first step product and 3g of octadecylamine...

Embodiment 3

[0056] In this example, the oil-soluble graphene compound provided in Example 1 is used as an antiwear agent for gasoline engine oil. Specifically, according to the formula in Table 1, the oil-soluble graphene compound and the common organic molybdenum salt antiwear agent (such as molybdenum dialkyldithiophosphate) in the current market are respectively used as antiwear agents, and SN / GF-5 0W-20 gasoline engine oil.

[0057] Table 1 SN / GF-5 0W-20 gasoline engine oil

[0058]

[0059] Note: B* contains anti-wear additives.

[0060] The analysis results of the two groups of SN / GF-5 0W-20 gasoline engine oils obtained are shown in Table 2.

[0061] Table 2: Analysis results of SN / GF-5 0W-20 gasoline engine oil

[0062]

[0063] Note: M* friction pair mode: ball and disc, test conditions: 50hz, 200g, 80℃.

[0064] As can be seen from the analysis data in Table 2, with Γ (CONHC m H 2m+1 ) x [Si(OCH 3 ) z C p H 2p+1 ] y (m=18, z=1 or 2, p=18), the friction coeffic...

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Abstract

The invention provides an oil-soluble graphene compound. The structural formula of the compound is gamma(CONHCmH2m+1)x(CH2COOCnH2n+1)y or gamma(CONHCmH2m+1)x[Si(OCH3)zCpH2p+1]y, wherein gamma represents graphene oxide, n is equal to or greater than 1 and equal to or smaller than 18, m is equal to or greater than 1 and equal to or smaller than 18, p is equal to or greater than 1 and equal to or smaller than 18, x is equal to or greater than 1 and equal to or smaller than 100, y is equal to or greater than 1 and equal to or smaller than 100, and z is 1 or 2. Molecules of the compound comprise straight-chain paraffin, and radicals in graphene oxide basically not include active hydroxide radicals, and therefore the compound has high oil solubility; moreover, since the compound contains a graphene structure, the compound has great wearproof performance and an excellent extreme pressure property. Meanwhile, the molecular structure of the compound does not contain elements harmful to the environment, such as sulfur, phosphorus and chlorine, so that the compound serving as a wearproof agent is environmentally friendly and can be applied to lubricating oil, lubricating grease, food and other aspects.

Description

technical field [0001] The invention relates to the field of lubricating oil additives, in particular to an oil-soluble graphene compound and a preparation method and application thereof. Background technique [0002] In recent years, with the comprehensive upgrading of industrial products, especially the automotive industry products, the requirements for the performance of lubricating oils have become higher and higher. The introduction of new environmental protection regulations has put forward strict restrictions on the use of sulfur, phosphorus, and chlorine-containing lubricating oil additives. At present, traditional lubricating oil antiwear agents include sulfur antiwear agents (such as sulfurized olefins, sulfurized esters, sulfurized oils, etc.), phosphorus antiwear agents (such as phosphates, phosphites, alkyl phosphonates, etc.), halogenated Anti-wear agents (such as chlorinated paraffin, chlorinated hydrocarbons, chlorinated fatty acids, etc.), organic metals (s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M159/12C10M177/00C10N30/06
CPCC10M159/12C10M177/00C10M2201/14C10N2030/06C10N2020/093C10N2030/41C10N2030/42C10N2030/43C10N2030/64
Inventor 鄂红军杜雪岭雷凌徐夏歌
Owner CHINA PETROLEUM & CHEM CORP
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