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Method for preparing graphene-based lubricating oil by micro-explosion graphene dispersion

A technology for olefin-based lubricating oil and dispersing graphite, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problems that graphene is difficult to achieve the lubricating effect, the dispersion cannot meet the requirements, etc., and can inhibit the formation of carbon deposits and paint films. , heat resistance and stability, good dispersion effect

Inactive Publication Date: 2020-08-25
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the dispersion does not meet the requirements, it is difficult for graphene to achieve the desired lubricating effect in lubricating oil

Method used

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  • Method for preparing graphene-based lubricating oil by micro-explosion graphene dispersion
  • Method for preparing graphene-based lubricating oil by micro-explosion graphene dispersion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of method that micro-explosion disperses graphene to prepare graphene-based lubricating oil, comprises the steps:

[0048] Step 1. Graphene with a mass ratio of 3:50:2:3, a mixed solvent (ethanol and deionized water are mixed according to a mass ratio of 30:40), and a dispersant (polyisobutylene polysuccinimide) 1. The foaming agent (ammonium carbonate) is evenly dispersed, and the slurry is ready for use;

[0049] Step 2, ultrasonically dispersing the slurry and nano-silicon carbide in step 1 with a mass ratio of 70:8, and freeze-drying to obtain a dry powder for use;

[0050] Step 3. Stir and disperse the dry powder and base lubricating oil (500N base oil) in step 2 with a mass ratio of 1:80, add antioxidant (2,6-di-tert-butyl-p-cresol) after heating and grinding, and stir evenly. After defoaming treatment, graphene-based lubricating oil is obtained.

[0051] Specifically, the dispersion temperature in the first step is 20° C., the rotational speed is 120 rpm...

Embodiment 2

[0055] A kind of method that micro-explosion disperses graphene to prepare graphene-based lubricating oil, comprises the steps:

[0056] Step 1. Graphene with a mass ratio of 15:200:8:15, mixed solvent (ethanol and deionized water are mixed according to a mass ratio of 60:80), dispersant (polyisobutylene polysuccinimide) 1. The foaming agent (ammonium carbonate) is evenly dispersed, and the slurry is ready for use;

[0057] Step 2, ultrasonically dispersing the slurry and nano-silicon carbide in step 1 with a mass ratio of 120:45, and freeze-drying to obtain a dry powder for use;

[0058] Step 3. Stir and disperse the dry powder and base lubricating oil (500N base oil) in Step 2 with a mass ratio of 5:150, add antioxidant (2,6-di-tert-butyl-p-cresol) after heating and grinding, and stir evenly , defoaming treatment to obtain graphene-based lubricating oil.

[0059] Specifically, the dispersion temperature in the first step is 40°C, the rotational speed is 200 rpm, and the di...

Embodiment 3

[0063] A kind of method that micro-explosion disperses graphene to prepare graphene-based lubricating oil, comprises the steps:

[0064] Step 1. Graphene with a mass ratio of 5:70:3:5, a mixed solvent (ethanol and deionized water are mixed at a mass ratio of 4:55), and a dispersant (polyisobutylene polysuccinimide) 1. The foaming agent (ammonium bicarbonate) is evenly dispersed, and the slurry is ready for use;

[0065] Step 2, ultrasonically dispersing the slurry in step 1 with a mass ratio of 80:10 and nano-silicon carbide, and freeze-drying to obtain a dry powder for use;

[0066] Step 3. Stir and disperse the dry powder and base lubricating oil (500N base oil) in Step 2 with a mass ratio of 2:100, add antioxidant (2,6-di-tert-butyl-p-cresol) after heating and grinding, and stir evenly , defoaming treatment to obtain graphene-based lubricating oil.

[0067] Specifically, the dispersion temperature in the first step is 30° C., the rotational speed is 150 rpm, and the dispe...

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Abstract

The invention relates to the technical field of modified lubricating oil, and particularly relates to a method for preparing graphene-based lubricating oil by micro-explosion graphene dispersion. Themethod comprises the following steps: uniformly dispersing graphene, a mixed solvent, a dispersing agent and a foaming agent, adding nano silicon carbide for ultrasonic dispersion, freeze-drying, adding base lubricating oil, stirring and dispersing, heating and grinding, then adding an antioxidant, uniformly stirring, and defoaming to obtain the graphene-based lubricating oil. The problem that inthe prior art, the ideal lubricating effect of graphene in lubricating oil is difficult to achieve is solved. The graphene-based lubricating oil prepared through the method has the advantages of beingsmall in friction resistance coefficient, high in heat conductivity coefficient, high in stability and good in compatibility, the friction coefficient is small, so that a good protection effect on mechanical parts is achieved, the heat conductivity coefficient is high, and heat generated in the friction process can be removed in time, and therefore, the service lifetime of the mechanical parts isprolonged.

Description

technical field [0001] The invention relates to the technical field of modified lubricating oil and its preparation method, in particular to a method for preparing graphene-based lubricating oil by micro-exploding and dispersing graphene. Background technique [0002] Lubricating grease is a kind of lubricating oil separated from petroleum and synthesized by hydrogenation, sulfonation, solvent extraction separation, etc. It is mainly used to reduce the friction between the surfaces of moving parts, and at the same time it has cooling and sealing effects on machinery and equipment. With the development of high-performance equipment, the requirements for precision lubrication such as industrial machinery lubrication and transmission lubrication are getting higher and higher. When the lubricating grease is used, the general working temperature is below 200°C, and the polar matter in it is on the metal surface of the friction part, which is decomposed by tribochemical action und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M157/04C10M177/00C10N30/04C10N30/06
CPCC10M157/04C10M177/00C10M2201/041C10M2201/062C10M2201/10C10M2207/026C10M2215/28
Inventor 曾军堂陈庆张俊陈涛司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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