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A kind of graphene lubricating oil additive and preparation method thereof

A lubricating oil additive, graphene technology, applied in the direction of additives, petroleum industry, lubricating composition, etc., can solve the problems of poor lubrication effect of graphene oxide, low success rate and efficiency of modification, complex modification process, etc., to achieve Easy in-situ peeling, excellent anti-friction and anti-wear effects, and rich functional groups

Active Publication Date: 2022-03-08
NINGBO GRAPHENE INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical modification of graphene may enhance its lipophilicity or oil solubility, but the modification process is complex, expensive, and the success rate and efficiency of modification are relatively low
Because graphene oxide has more functional groups, it is easy to combine with dispersant to realize its dispersion in lubricating oil, but the lubricating effect of graphene oxide is not good.

Method used

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  • A kind of graphene lubricating oil additive and preparation method thereof
  • A kind of graphene lubricating oil additive and preparation method thereof
  • A kind of graphene lubricating oil additive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A preparation method for graphene lubricating oil additive, comprises the steps:

[0049] 1. Select ordinary graphite powder with an average particle size of 1.0 μm and anhydrous ferric chloride FeCl3, and prepare FeCl3 intercalated graphite by molten salt method:

[0050] At 80°C, mix FeCl3 and graphite powder into heat-resistant glass tubes, the molar ratio of the two is 1:15, vacuumize to 10.3Pa at 120°C, seal the glass tubes, and then heat them at 380 React at ℃ for 48h, cool to room temperature and take out the product;

[0051] 2. Wash the obtained FeCl3 intercalated graphite powder to remove excess FeCl3, then dry it, then add it to the 0.5mg / ml graphene oxide aqueous solution, so that the mass ratio of graphene oxide and intercalated graphite is 1:1, Stir and disperse evenly, dry in an oven at 50°C to obtain intercalated graphite / graphene oxide blend powder;

[0052] 3. Take 5 parts by weight of T106D detergent, 15 parts by weight of T161 dispersant, and 10 pa...

Embodiment 2

[0056] A preparation method for graphene lubricating oil additive, comprises the steps:

[0057] 1. Use ordinary graphite powder with an average particle size of 1.6 μm as raw material, triethyl phosphate as intercalation agent, and prepare triethyl phosphate intercalated graphite by solvothermal method:

[0058] Mix expanded graphite and triethyl phosphate evenly, the mass ratio of expanded graphite and triethyl phosphate is 1:3.5, add it into a high-pressure reactor, react at 120°C for 2 hours, cool to room temperature, and centrifuge to collect the precipitate to obtain the product;

[0059] 2. The prepared intercalated graphite powder is washed with water and ethanol, dried, and then added to the graphene oxide water / isopropanol (volume ratio of water and isopropanol is 3:1) solution of 1mg / ml, Make the mass ratio of graphene oxide and intercalated graphite to be 0.5:1, stir and disperse evenly, freeze-dry to intercalated graphite / graphene oxide blend powder;

[0060] 3. ...

Embodiment 3

[0062] A preparation method for graphene lubricating oil additive, comprises the steps:

[0063] 1. Select ordinary graphite powder with an average particle size of 2.6 μm as raw material, coconut oil alkanolamide phosphate, anhydrous ferrous chloride as intercalation agent, and prepare intercalated graphite by solvothermal method:

[0064] Dissolve 0.2 parts by weight of anhydrous ferrous chloride in 3 parts by weight of coconut oil alkanolamide phosphate, add 1 part by weight of graphite oxide powder and mix evenly, add it to the autoclave, react at 150 ° C for 1 hour, and cool Take it out at room temperature, centrifuge to get the precipitate to obtain the product;

[0065] 2. The prepared intercalated graphite powder is washed with water and ethanol, dried, and then added to the graphene oxide ethanol / water (volume ratio of ethanol and water is 1:3) solution of 1 mg / ml to make graphene oxide The mass ratio to intercalated graphite is 2:1, uniformly dispersed, freeze-dried...

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Abstract

The invention relates to the field of lubricating oil additives, in particular to a graphene lubricating oil additive and a preparation method thereof. The preparation method provided by the embodiment of the present invention comprises the following steps: dispersing the intercalated graphite into the graphene oxide solution and drying to obtain the intercalated graphite / graphene oxide blend powder; blending the intercalated graphite / graphene oxide The powder is added into the base oil containing dispersant and detergent, and treated with microwave to obtain graphene lubricating oil. The preparation method uses microwaves to exfoliate the intercalated graphite in-situ in the base oil to form graphene, and uses graphene oxide to promote the dispersion of the exfoliated graphene sheets, and is stably dispersed in the base oil under the combined action of detergent and dispersant , the graphene lubricating oil additive is prepared, and the process is simplified; the prepared graphene lubricating oil additive has no agglomeration, good dispersion performance, and excellent wear-reducing and anti-wear effects.

Description

technical field [0001] The invention relates to the field of lubricating oil additives, in particular to a graphene lubricating oil additive and a preparation method thereof. Background technique [0002] Where there is friction, there is lubrication, so lubrication involves all aspects of life, especially places with mechanical structures generally need lubrication. Oil lubrication is simple, reliable and widely used among many lubrication technologies. However, the current lubricating oil technology still cannot fully meet the needs of the current national life and production. With the development of technologies in other fields towards various extreme conditions, Higher requirements are also put forward for lubricant technology, and it is imminent to improve the quality and grade of lubricant. [0003] Lubricating oil is generally composed of base oil and additives. Additives are the essence of lubricating oil, and the anti-wear and anti-friction properties of lubricatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M125/02C10M177/00C10N30/06
Inventor 黄满华郭玉芬刘兆平
Owner NINGBO GRAPHENE INNOVATION CENT CO LTD
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