Graphene modified epoxide anticorrosive coating and preparation method thereof

A technology for epoxy anti-corrosion coatings and graphene modification, which is applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc. It can solve problems such as uneven grafting, restrictions on the application of graphene, and different production and application habits, and achieve dispersion good sex effect

Active Publication Date: 2019-05-21
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dispersion of graphene in coatings is very poor. Its large surface tension brings strong van der Waals force and π-π bond interaction, which makes graphene very easy to agglomerate. This kind of agglomeration not only cannot improve the anti-corrosion performance, but may be in the coating. The agglomeration forms permeation channels, accelerates the diffusion rate of water molecules or chloride ions in the coating, and reduces the mechanical properties and anti-corrosion properties of the co

Method used

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  • Graphene modified epoxide anticorrosive coating and preparation method thereof
  • Graphene modified epoxide anticorrosive coating and preparation method thereof
  • Graphene modified epoxide anticorrosive coating and preparation method thereof

Examples

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Embodiment 1

[0038] The graphene-modified epoxy anticorrosion coating of this embodiment is mainly made of 60gA component and 10gB component, and described A component is mainly made of 19.2g epoxy resin 901, 16.6g titanium dioxide, 20g talcum powder, 0.6g BYK180 and 3.6 g graphene dispersion liquid composition, described B component is 10g polyamide solidifying agent, and the mass ratio of described graphene dispersion liquid and described A component is 6:100.

[0039] The graphene dispersion is obtained by compounding 20g graphene, 200g mixed solvent and 10g Lubrizol 32500, and the mixed solvent is 80g xylene, 20g cyclohexanone, 20g butanol, 50g ethylene glycol ether, and 30g ethyl ether. A mixture of glycol ether acetates.

[0040] The preparation method of the graphene modified epoxy anticorrosion coating in the present embodiment may further comprise the steps:

[0041] 1) Preparation of premixed solution: 19.2g of epoxy resin 901, 16.6g of titanium dioxide, 20g of talcum powder and...

Embodiment 2

[0048] The graphene-modified epoxy anticorrosion coating of the present embodiment is mainly made by 70gA component and 10gB component, and described A component is mainly made of 21g epoxy resin E44, 19.83g zinc phosphate, 20g barium sulfate, 0.77gAFCONA3777 and 8.4 g graphene dispersion liquid composition, described B component is 10g phenalkamine solidifying agent, and the mass ratio of described graphene dispersion liquid and described A component is 12:100.

[0049] The graphene dispersion is mainly obtained by compounding 20g graphene, 300g mixed solvent and 16g Ona F410, and the mixed solvent is 144g xylene, 32g cyclohexanone, 37g butanol, 58g ethylene glycol ether, and 29g ethyl ether. A mixture of glycol ether acetates.

[0050] The preparation method of the graphene modified epoxy anticorrosion coating in the present embodiment may further comprise the steps:

[0051] 1) Preparation of premixed solution: 21g of epoxy resin E44, 19.83g of zinc phosphate, 20g of bariu...

Embodiment 3

[0058] The graphene-modified epoxy anticorrosion coating of the present embodiment is mainly made by 80gA component and 10gB component, and described A component is mainly made of 25.2g epoxy resin E51, 20g carbon black, 25.76g mica powder, 1.04g BYK161 and 8g graphene dispersion liquid composition, described B component is 10g aliphatic amine solidifying agent, and the mass ratio of described graphene dispersion liquid and described A component is 10:100.

[0059] Described graphene dispersion liquid is compounded by 20g graphene, 400g mixed solvent and 20g Lubrizol 32500, and described mixed solvent is 150g xylene, 43g cyclohexanone, 40g butanol, 100g ethylene glycol ethyl ether and 67g ethyl alcohol A mixture of glycol ether acetates.

[0060] The preparation method of the graphene modified epoxy anticorrosion coating in the present embodiment may further comprise the steps:

[0061] 1) Preparation of premixed solution: Mix 25.2g of epoxy resin E51, 20g of carbon black, 25...

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Abstract

The invention relates to the field of epoxide anticorrosive coatings, specifically to a graphene modified epoxide anticorrosive coating. The graphene modified epoxide anticorrosive coating is preparedfrom a component A and a component B, wherein the component A mainly comprises epoxy resin, a pigment, a filler, an additive and graphene dispersing liquid; the component B is a curing agent; the mass ratio of the graphene dispersing liquid to the component A is (6-12):100; the mass ratio of the component A and the component B is (6-8):1; the graphene dispersing liquid is prepared by compositinggraphene, a mixing solvent and a dispersing agent B; the mixing solvent is a mixture of xylene, cyclohexanone, butanol, glycol ether and ethylene glycol monoethyl ether acetate. According to the graphene modified epoxide anticorrosive coating, the mixing solvent is adopted, so that the graphene can be uniformly dispersed into the coating; the prepared coating is high in stability, and high in anti-corrosive performance.

Description

technical field [0001] The invention relates to the field of epoxy anticorrosion coatings, in particular to a graphene-modified epoxy anticorrosion coating and a preparation method thereof. Background technique [0002] Epoxy anti-corrosion coating is a commonly used anti-corrosion coating, which is generally used as a primer to coat metal surfaces, but the anti-corrosion performance of traditional epoxy anti-corrosion coatings is generally insufficient and needs to be improved. [0003] Graphene is a newly discovered carbon nanomaterial with a regular two-dimensional structure in recent years. Its huge specific surface area, chemical stability, and excellent barrier and adsorption properties make it a research hotspot for anti-corrosion coating additive materials in recent years. However, the dispersion of graphene in coatings is very poor. Its large surface tension brings strong van der Waals force and π-π bond interaction, which makes graphene very easy to agglomerate. Th...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/20
Inventor 谭伟民郁飞狄志刚胡秀东史立平刘仲阳
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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