A kind of graphene compound for lubricating oil additive and its preparation method and application

A graphene and compound technology, applied in the field of oil-soluble graphene compounds and their preparation, can solve the problems of "increased agglomeration" and achieve the effects of reduced friction coefficient, mild reaction conditions, and excellent oil solubility

Active Publication Date: 2022-07-19
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The study found that lipophilic graphene was prepared by introducing long-chain alkyl groups into graphene oxide in situ. However, the "agglomeration" phenomenon of the functionalized graphene increased significantly after being placed for more than 5 days.

Method used

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  • A kind of graphene compound for lubricating oil additive and its preparation method and application
  • A kind of graphene compound for lubricating oil additive and its preparation method and application
  • A kind of graphene compound for lubricating oil additive and its preparation method and application

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Embodiment 1

[0059] The present embodiment provides a graphene compound for lubricating oil additive. It is polyisobutylene succinic anhydride with a molecular weight of 3000.

[0060] The present embodiment also provides a preparation method of the above-mentioned graphene compound, which is specifically as follows:

[0061] (1) Add 200mL of DMF and 1g of graphene oxide to a 500ml three-necked bottle, seal it well, and sonicate for half an hour; under temperature control, add 1-hydroxybenzotriazole (3.1g) and 1-(3- DMF solution of dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (2.5g) and methanol solution of 1g PAMAM dendrimer (G1); under nitrogen protection, magnetic stirring at room temperature for 48 hours , transferred to a single-necked bottle to remove DMF by rotary evaporation, then filtered, rinsed with methanol to remove 1-hydroxybenzotriazole and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride , and dried in a vacuum drying oven at 80° C. for 12 h to obtain...

Embodiment 2

[0065] The present embodiment provides a graphene compound for lubricating oil additive. It is polyisobutylene succinic anhydride with a molecular weight of 1000.

[0066] The present embodiment also provides a preparation method of the above-mentioned graphene compound, which is specifically as follows:

[0067] (1) Add 200mL of DMF and 1g of graphene oxide to a 500ml three-necked bottle, seal it well, and sonicate for half an hour; under temperature control, add 1-hydroxybenzotriazole (3.09g) and 1-(3- DMF solution of dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (2.5g) and methanol solution of 2g PAMAM dendrimer (G2); under nitrogen protection, magnetic stirring at room temperature for 48 hours , transferred to a single-necked bottle to remove DMF by rotary evaporation, then filtered, rinsed with methanol to remove 1-hydroxybenzotriazole and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride , and dried in a vacuum drying oven at 80° C. for 12 h to obtai...

Embodiment 3

[0071] The present embodiment provides a graphene compound for lubricating oil additive. It is polyisobutylene succinic anhydride with a molecular weight of 3000.

[0072] The present embodiment also provides a preparation method of the above-mentioned graphene compound, which is specifically as follows:

[0073] (1) Add 200mL of DMF and 1g of graphene oxide to a 500ml three-necked bottle, seal it well, and sonicate for half an hour; control the temperature and add dropwise 1-hydroxybenzotriazole (2.1g) and 1-(3- DMF solution of dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (1.42g) and methanol solution of 1.5g PAMAM dendrimer (G3); under nitrogen protection, magnetic stirring at room temperature for reaction 48 hours, transferred to a single-necked flask to remove DMF by rotary evaporation, then filtered, rinsed with methanol to remove 1-hydroxybenzotriazole and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride The salt was dried in a vacuum drying oven a...

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Abstract

The invention relates to the technical field of lubricating oil additives, in particular to a graphene compound used for lubricating oil additives and a preparation method and application thereof. The invention provides an oil-soluble graphene compound, the structural formula of which is: Γ~N~R, wherein, Γ is graphene oxide, and N is the end group that is all -NH 2 or -OH aliphatic or aromatic bridged compound, or -NH at one end 2 , an aliphatic or aromatic bridged compound whose one end is -OH, and R is a compound containing a polyisobutylene succinic anhydride structure. The graphene compound has excellent oil solubility, can be well dispersed in lubricating oil, and has excellent anti-wear performance and extreme pressure performance; at the same time, it does not contain elements harmful to the environment such as sulfur, phosphorus and chlorine, and is green and environmentally friendly. Moreover, the preparation process is simple, the reaction conditions are mild, and there is no special requirement for chemical equipment; it can be used in fields such as lubricating oil and lubricating grease.

Description

technical field [0001] The invention relates to the technical field of lubricating oil additives, in particular to an oil-soluble graphene compound for lubricating oil additives and a preparation method and application thereof. Background technique [0002] Graphene is a new type of two-dimensional atomic crystal composed of closely packed carbon atoms, and its basic structure is SP 2 The six-membered cyclic benzene-like unit formed by hybridizing carbon atoms is currently the thinnest two-dimensional material in the world, with a single layer thickness of only 0.3354nm. Novoselov discovered for the first time. Graphene has an ultra-thin lamellar structure (easy access to the frictional contact surface), excellent mechanical properties and self-lubrication, which has attracted attention for its application in lubricating additives. A large number of studies have found that adding an appropriate amount of graphene as a lubricant additive can not only reduce the friction coe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M145/12C10N30/06
CPCC10M145/12C10M2201/041C10M2209/086
Inventor 鄂红军李万英雷凌金佳佳徐夏歌
Owner CHINA PETROLEUM & CHEM CORP
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