Waterborne two-component epoxy anticorrosive coating and preparation method thereof

An epoxy anti-corrosion coating, two-component technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of decreased storage stability of coatings, health hazards of operators, and reduced coating compactness. Achieve the effect of high density, excellent corrosion resistance and high density

Inactive Publication Date: 2022-01-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since zinc powder is prone to sedimentation, too high a content will lead to a significant decline in the storage stability of the coating, and it will also lead to a decrease in the compactness of the coating. In addition, a large amount of zinc powder used in the coating production process is also likely to produce zinc fog. The health hazard of the operator is relatively large

Method used

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  • Waterborne two-component epoxy anticorrosive coating and preparation method thereof
  • Waterborne two-component epoxy anticorrosive coating and preparation method thereof
  • Waterborne two-component epoxy anticorrosive coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A waterborne two-component epoxy anti-corrosion coating consisting of A component and B component:

[0059] Component A consists of the following raw materials in parts by mass:

[0060] Zinc powder (spherical, particle size 18μm~23μm): 25.73 parts;

[0061] Propylene glycol methyl ether (film-forming aid): 9.62 parts;

[0062] Propylene glycol phenyl ether (film-forming aid): 2.40 parts;

[0063] ADDITOL-VXW 6208 / 60 (dispersant): 0.48 parts;

[0064] MT 6650 (thickener): 0.64 parts;

[0065] Fumed silica (anti-settling agent): 0.80 parts;

[0066] EPIKURE8538-Y-68 (curing agent): 8.50 parts;

[0067] Component B consists of the following raw materials in parts by mass:

[0068] Epikote6520-WH-53A (bisphenol A type epoxy resin, epoxy equivalent 500g / eq~600g / eq): 36.07 parts;

[0069] Graphene oxide slurry: 1.02 parts;

[0070] ASCOTRAN-H14 (anti-flash rust agent): 0.26 parts;

[0071] Deionized water: 14.43 parts.

[0072] The preparation method of above-mention...

Embodiment 2

[0078] A waterborne two-component epoxy anti-corrosion coating consisting of A component and B component:

[0079] Component A consists of the following raw materials in parts by mass:

[0080] Zinc powder (spherical, particle size 18μm~23μm): 25.21 parts;

[0081] Propylene glycol methyl ether (film-forming aid): 9.42 parts;

[0082] Propylene glycol phenyl ether (film-forming aid): 2.36 parts;

[0083] ADDITOL-VXW 6208 / 60 (dispersant): 0.47 parts;

[0084] MT 6650 (thickener): 0.63 parts;

[0085] Fumed silica (anti-settling agent): 0.79 parts;

[0086] EPIKURE8538-Y-68 (curing agent): 8.32 parts;

[0087] Component B consists of the following raw materials in parts by mass:

[0088] Epikote6520-WH-53A (bisphenol A type epoxy resin, epoxy equivalent 500g / eq~600g / eq): 35.34 parts;

[0089] Graphene oxide slurry: 3.03 parts;

[0090] ASCOTRAN-H14 (anti-flash rust agent): 0.16 parts;

[0091] Deionized water: 14.14 parts.

[0092] The preparation method of above-menti...

Embodiment 3

[0098] A waterborne two-component epoxy anti-corrosion coating consisting of A component and B component:

[0099] Component A consists of the following raw materials in parts by mass:

[0100] Zinc powder (spherical, particle size 18μm~23μm): 33.34 parts;

[0101] Propylene glycol methyl ether (film-forming aid): 8.31 parts;

[0102] Propylene glycol phenyl ether (film-forming aid): 2.08 parts;

[0103] ADDITOL-VXW 6208 / 60 (dispersant): 0.42 parts;

[0104] MT 6650 (thickener): 0.55 parts;

[0105] Fumed silica (anti-settling agent): 0.69 parts;

[0106] EPIKURE8538-Y-68 (curing agent): 7.34 parts;

[0107] Component B consists of the following raw materials in parts by mass:

[0108] Epikote6520-WH-53A (bisphenol A type epoxy resin, epoxy equivalent 500g / eq~600g / eq): 31.16 parts;

[0109] Graphene oxide slurry: 3.32 parts;

[0110] ASCOTRAN-H14 (anti-flash rust agent): 0.28 parts;

[0111] Deionized water: 12.46 parts.

[0112] The preparation method of above-menti...

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Abstract

The invention discloses a waterborne two-component epoxy anticorrosive coating and a preparation method thereof. The waterborne two-component epoxy anticorrosive coating is composed of a component A and a component B, the component A is composed of zinc powder, a coalescing agent, a dispersing agent, a thickening agent, an anti-settling agent and a curing agent, the component B is composed of epoxy resin, graphene oxide slurry, a flash rust inhibitor and water, and the mass ratio of the component A to the component B is 0.8: 1-1.5: 1. The waterborne two-component epoxy anticorrosive coating has the characteristics of low zinc powder content, low volatile organic compound content, simple preparation process and the like, and a formed coating is excellent in corrosion resistance, high in density, large in adhesive force, excellent in impact resistance and suitable for large-scale production and application.

Description

technical field [0001] The invention relates to the technical field of metal anticorrosion, in particular to a water-based two-component epoxy anticorrosion coating and a preparation method thereof. Background technique [0002] Metal corrosion refers to the phenomenon that metal materials are damaged by the surrounding medium (such as moisture, chemical substances, etc.) during use, resulting in a decrease in mechanical properties and a shortened service life. At present, it is one of the most cost-effective and easy-to-implement anti-corrosion methods to prevent the metal substrate from being damaged by corrosion by coating the metal surface with an anti-corrosion coating. [0003] Epoxy zinc-rich coating is a kind of anti-corrosion coating with excellent corrosion resistance. The zinc powder in the epoxy zinc-rich coating can not only play the role of sacrificial anode cathodic protection, but also the corrosion products of zinc powder can play the role of corrosion inhi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61
CPCC09D163/00C09D5/106C09D7/61C08K7/18C08K3/042
Inventor 陈中华张怡茹李红强
Owner SOUTH CHINA UNIV OF TECH
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