Graphene engine oil antiwear agent and preparation method thereof

A technology of olefinic motor oil and anti-wear agent, which is applied in the field of lubricating oil, can solve the problems of easy aggregation and precipitation, difficulty in uniform dispersion, etc., and achieve the effects of improving dispersion performance, preventing precipitation, and enhancing anti-wear performance

Inactive Publication Date: 2020-02-18
贵州明志典成科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene is prone to agglomeration and precipitation during use, and it is difficult to disperse evenly.

Method used

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  • Graphene engine oil antiwear agent and preparation method thereof
  • Graphene engine oil antiwear agent and preparation method thereof

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preparation example Construction

[0024] Embodiments of the present invention provide a graphene engine oil antiwear agent and a preparation method thereof, comprising the following steps:

[0025] (1) Dissolving graphene oxide in toluene and ultrasonically dispersing to form a graphene oxide dispersion;

[0026] (2) Dissolving sodium azide and cyanuric chloride in toluene to form a reaction solution;

[0027] (3) Add the reaction solution to the graphene oxide dispersion, and perform secondary ultrasonic dispersion to form a mixed solution;

[0028] (4) Add the mixed solution into the reaction kettle for solvothermal reaction to prepare carbon nitride-modified graphene composite materials;

[0029] (5) Centrifuge and wash to obtain the graphene engine oil antiwear agent.

[0030] Wherein, the multilayer graphene oxide in the step (1) is prepared by the hummers method, and the number of layers is 10-50. The friction coefficient of graphene with 10-50 layers is smaller than that of single-layer graphene, and...

Embodiment 1

[0037] Embodiment 1 of the present invention provides a graphene engine oil antiwear agent and a preparation method thereof, comprising the following steps:

[0038] (1) Dissolve graphene oxide in 30ml of toluene, ultrasonically disperse at 180w for 40min, and form a graphene oxide dispersion with a concentration of 0.16 mg / mL;

[0039] (2) Dissolve sodium azide and cyanuric chloride in 30ml of toluene to form a reaction liquid, the concentration of sodium azide in the reaction liquid is 45 mg / mL, and the concentration of cyanuric chloride is 40 mg / mL;

[0040] (3) Add the reaction liquid to the graphene oxide dispersion, 180w ultrasonic for 5min, and ultrasonically disperse to form a mixed liquid;

[0041] (4) Add the mixed solution into a 150ml reactor for solvothermal reaction at a reaction temperature of 200°C and a reaction time of 15 hours to prepare a carbon nitride-modified graphene composite material;

[0042] (5) Centrifuge, wash with acetonitrile for 3 times, and f...

Embodiment 2

[0044] Embodiment 2 of the present invention provides a graphene engine oil antiwear agent and a preparation method thereof, comprising the following steps:

[0045] (1) Dissolve graphene oxide in 30ml of toluene, ultrasonically disperse at 180w for 60min, and form a graphene oxide dispersion with a concentration of 0.12 mg / mL;

[0046] (2) Dissolve sodium azide and cyanuric chloride in 30ml of toluene to form a reaction liquid, the concentration of sodium azide in the reaction liquid is 50 mg / mL, and the concentration of cyanuric chloride is 45 mg / mL;

[0047] (3) Add the reaction solution to the graphene oxide dispersion, 180w ultrasonic for 8min, and ultrasonically disperse to form a mixed solution;

[0048] (4) Add the mixed solution into a 150ml reactor for solvothermal reaction at a reaction temperature of 220°C and a reaction time of 12 hours to prepare a carbon nitride-modified graphene composite material;

[0049] (5) Centrifuge, wash 3 times with ether, and finally ...

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Abstract

The invention discloses a graphene engine oil antiwear agent and a preparation method thereof, and the preparation method comprises the following steps: dissolving graphene oxide in toluene, and ultrasonically dispersing to form graphene oxide dispersion liquid; dissolving sodium azide and cyanuric chloride in toluene to form reaction liquid; adding the reaction liquid into the graphene oxide dispersion liquid, and performing secondary ultrasonic dispersion to form mixed liquid; adding the mixed liquid into a reaction kettle for solvothermal reaction to prepare a carbon nitride modified graphene composite material; and centrifuging and washing to obtain the graphene engine oil antiwear agent. According to the invention, the graphene oxide is taken as a main raw material, carbon nitride nanotubes are synthesized through in-situ polymerization between graphene oxide layers by a solvothermal method, and the graphene modified by the carbon nitride nanotubes has better abrasion resistance and dispersibility.

Description

technical field [0001] The invention relates to the technical field of lubricating oil, [0002] In particular, the present invention relates to a graphene engine oil antiwear agent and a preparation method thereof. Background technique [0003] Anti-wear agent is a kind of engine oil (lubricating oil) additive. Anti-wear agent can reduce engine wear, increase engine power, prolong the service life of engine oil, save fuel and improve power. Commonly used antiwear agents include sulfur antiwear agents, phosphorus antiwear agents, sulfur phosphorus antiwear agents, halogen antiwear agents, organometallic antiwear agents and boron antiwear agents. [0004] Graphene is a new type of anti-wear agent studied in recent years. Graphene is a two-dimensional crystal composed of carbon atoms that is stripped from graphite materials. It is currently the thinnest and highest-strength material in nature. Using graphene as an anti-wear agent is to use the unique physical and chemical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/02C10M125/20C10M125/00C10N30/04C10N30/06
CPCC10M125/00C10M125/02C10M125/20C10M2201/041C10M2201/061
Inventor 冯岩夏明
Owner 贵州明志典成科技有限公司
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