Graphene dispersion liquid for anticorrosive coatings for oil pipes and preparation method of graphene dispersion liquid

A technology of graphene dispersion liquid and anti-corrosion coating, applied in the direction of anti-corrosion coating, coating, etc., to achieve the effect of improving the application field, good dispersion and stripping, and excellent physical and chemical properties

Active Publication Date: 2018-06-19
天津北方石墨烯产业研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, it is difficult for a single solvent to meet the above composite requirements, and it is currently a difficult problem to develop a mixed solvent that can disperse graphene well.

Method used

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  • Graphene dispersion liquid for anticorrosive coatings for oil pipes and preparation method of graphene dispersion liquid
  • Graphene dispersion liquid for anticorrosive coatings for oil pipes and preparation method of graphene dispersion liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] According to the technical scheme created by the present invention, the preparation of graphene dispersion is carried out according to the following steps:

[0050] (1) Take a certain amount of graphite powder, adopt Hummers method that graphite powder is prepared into graphene oxide;

[0051] (2) graphene oxide is reduced into graphene powder with hydrazine hydrate;

[0052] (3) 30ml of xylene, 20ml of N,N-dimethylformamide, 10ml of N-methylpyrrolidone, and 40ml of 1,4 butanediol diglycidyl ether are made into a mixed solvent of 100ml;

[0053] (4) add 0.5g graphene powder in the mixed solvent in the ratio of 0.5g / 100ml;

[0054] (5) Using an ultrasonic disperser to ultrasonically disperse and add the mixed solution of graphene under 300W power for 30 minutes;

[0055] (6) Add 1g of polyoxyethylene castor oil and 1g of coupling agent to the mixed solution with graphene, and use an ultrasonic disperser to ultrasonically disperse for 30 minutes to obtain a graphene dis...

Embodiment 2

[0058] According to the technical scheme created by the present invention, the preparation of graphene dispersion is carried out according to the following steps:

[0059] (1) Take a certain amount of graphite powder, adopt Hummers method that graphite powder is prepared into graphene oxide;

[0060] (2) graphene oxide is reduced into graphene powder with hydrazine hydrate;

[0061] (3) Mix 30ml of xylene, 20ml of N,N-dimethylformamide, 10ml of N-methylpyrrolidone, 40ml of 1,4 butanediol diglycidyl ether, and 10ml of ethyl acetate into 110ml of mixed solvent;

[0062] (4) add 0.55g graphene powder in the mixed solution in the ratio of 0.5g / 100ml;

[0063] (5) Using an ultrasonic disperser to ultrasonically disperse and add the mixed solution of graphene under 300W power for 30 minutes;

[0064] (6) Add 1.1g polyoxyethylene castor oil and 1.1g coupling agent to the mixed solution with graphene according to the ratio of 1g / 100ml, and use an ultrasonic disperser to ultrasonical...

Embodiment 3

[0067] According to the technical scheme created by the present invention, the preparation of graphene dispersion is carried out according to the following steps:

[0068] (1) Take a certain amount of graphite powder, adopt Hummers method that graphite powder is prepared into graphene oxide;

[0069] (2) graphene oxide is reduced into graphene powder with hydrazine hydrate;

[0070] (3) Get xylene solvent 100ml;

[0071] (4) add 0.5g graphene powder in xylene solvent in the ratio of 0.5g / 100ml;

[0072] (5) Using an ultrasonic disperser to ultrasonically disperse and add the mixed solution of graphene under 300W power for 30 minutes;

[0073] (6) Add 1 g of polyoxyethylene castor oil and 1 g of coupling agent to the graphene-added mixed solution, and use an ultrasonic disperser to ultrasonically disperse for 30 minutes to complete the preparation of the graphene dispersion.

[0074] In this example, compared with Example 1 and Example 2, the solvent only uses one of the nec...

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Abstract

The invention provides a graphene dispersion liquid for anticorrosive coatings for oil pipes and a preparation method of the graphene dispersion liquid. The graphene dispersion liquid is composed of graphene, a mixed solvent, a solubilizing agent and a coupling agent; the mixed solvent comprises dimethylbenzene, N, N-dimethylformamide, N-methylpyrrolidone and 1, 4-butanediol diglycidyl ether; themixed solvent may also comprise one or more of ethyl acetate, ethylene glycol butyl ether, butyl acetate, cyclohexanone and isoamyl acetate. The graphene dispersion liquid prepared by the invention has good graphene peeling property and obvious laminated structure, improves dispersibility of graphene, and can be added into the anticorrosive coatings to give full play to excellent physicochemical properties of the graphene and improve overall performance of the anticorrosive coatings, especially high-temperature and high-pressure resistance.

Description

technical field [0001] The invention belongs to the technical field of oil industry anticorrosion, and in particular relates to a graphene dispersion used for oil pipe anticorrosion coatings and a preparation method thereof. Background technique [0002] Oil pipes account for more than 40% of the total steel used in the petroleum industry. The service life of oil pipes is of great significance to the overall benefits of the oil industry. Therefore, the failure of oil pipes will lead to catastrophic accidents and cause great economic and social losses. Corrosion is one of the important forms of oil pipeline failure. According to incomplete statistics, the direct economic loss caused by corrosion in the oil industry has reached more than one billion yuan. The corrosion of oil tubing is mainly due to oil and gas well output, shallow water, injection fluid, etc. The main medium includes hydrogen sulfide, carbon dioxide, dissolved oxygen and microorganisms (SRB, etc.), and the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/08C09D7/65C09D7/20
CPCC09D1/00C09D5/08
Inventor 刘泽玲易汉平高古辉冯春
Owner 天津北方石墨烯产业研究院
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