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Anticorrosion coating for steel structure

A technology for anti-corrosion coatings and steel structures, applied in the field of coatings, can solve the problems of complex treatment, poor comprehensive anti-corrosion performance, poor coating durability, etc., and achieve the effects of simple preparation and construction process, excellent anti-corrosion performance and excellent mechanical properties

Active Publication Date: 2021-05-28
广州市上善纳米材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention adopts an in-situ composite method to obtain an environmentally friendly anticorrosion coating for steel structures with long-term anticorrosion performance, which solves the problems of high VOC emissions, poor comprehensive anticorrosion performance and coating Problems of poor durability and complicated pre-coating treatment

Method used

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  • Anticorrosion coating for steel structure
  • Anticorrosion coating for steel structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An anti-corrosion coating for steel structures is prepared by mixing component A and component B at a weight ratio of 5:1, wherein component B is an epoxy curing agent, and component A is prepared from the following raw materials in weight percentage : 20% modified epoxy resin emulsion, 35% modified graphene oxide hydrosol, 20% modified nanocomposite sol, 15% filler, 4% corrosion inhibitor, 2% anti-settling agent and 4% diluent;

[0038] Wherein, the preferred ketimine of epoxy curing agent;

[0039] The filler is one or more of kaolin, sericite powder, fly ash, and montmorillonite; sericite powder is preferred;

[0040] The corrosion inhibitor is preferably 2-mercaptobenzothiazole;

[0041] The anti-sedimentation agent is organic bentonite or white carbon black; preferably organic bentonite;

[0042] The diluent is one or more of ethanol, glycerol, and pentaerythritol, preferably pentaerythritol;

[0043] Its specific preparation method comprises the following steps...

Embodiment 2

[0052] A steel structure anti-corrosion coating is made by mixing component A and component B at a weight ratio of 4.8:1, wherein component B is an epoxy curing agent, and component A is prepared from the following raw materials in weight percentage : Modified epoxy resin emulsion 24%, modified graphene oxide hydrosol 35%, modified nanocomposite sol 20%, filler 10%, corrosion inhibitor 5%, anti-settling agent 2% and diluent 4%;

[0053] Wherein, the preferred ketimine of epoxy curing agent;

[0054] The filler is one or more of kaolin, sericite powder, fly ash, and montmorillonite; sericite powder is preferred

[0055] The corrosion inhibitor is preferably 2-mercaptobenzothiazole;

[0056] The anti-sedimentation agent is organic bentonite or white carbon black; preferably organic bentonite;

[0057] The diluent is one or more of ethanol, glycerol and pentaerythritol, preferably pentaerythritol.

[0058] Its preparation method specifically comprises the following steps:

[...

Embodiment 3

[0067] A kind of steel structure anticorrosion coating, it is characterized in that, described coating is made by mixing component A and component B with the weight ratio of 4.8:1, wherein, described component B is epoxy curing agent, and component A is made of Prepared from the following raw materials in weight percent: modified epoxy resin emulsion 32.5%, modified graphene oxide hydrosol 30%, modified nanocomposite sol 17.5%, filler 12.5%, corrosion inhibitor 3%, anti-settling agent 1.5% % and diluent 3%;

[0068] Wherein, the preferred ketimine of epoxy curing agent;

[0069] The filler is one or more of kaolin, sericite powder, fly ash, and montmorillonite; sericite powder is preferred

[0070] The corrosion inhibitor is preferably 2-mercaptobenzothiazole;

[0071] The anti-sedimentation agent is organic bentonite or white carbon black; preferably organic bentonite;

[0072] The diluent is one or more of ethanol, glycerol and pentaerythritol, preferably pentaerythritol....

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Abstract

The invention discloses a solvent-free steel structure anticorrosion coating and a preparation method thereof. The coating is prepared by mixing component A and component B at a weight ratio of 4-5:1, wherein component B is epoxy cured agent, component A is prepared from the following raw materials in weight percentage: modified epoxy resin emulsion 20-45%, modified graphene oxide hydrosol 15-35%, modified nanocomposite sol 15-20%, filler 10% ‑15%, corrosion inhibitor 1‑5%, anti-settling agent 0.5‑2% and thinner 2‑4%; the solvent-free steel structure anticorrosion coating is carboxymethyl chitosan modified epoxy resin as the matrix, Obtained by in-situ compounding with modified graphene oxide hydrosol and modified nanocomposite sol, the solvent-free anticorrosion coating of the present invention still has excellent adhesion to wet and rusty steel structures, and there is no release of organic solvents, which can Guaranteed coating performance, but also has environmental friendliness, high anti-corrosion performance and excellent construction performance.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a steel structure anticorrosion coating. Background technique [0002] As an energy-saving, green and environmentally friendly material, steel structure is widely used in various engineering buildings. However, steel structure materials also have disadvantages such as poor heat resistance, fire resistance, and corrosion resistance. In complex application fields, steel structure materials face Different environments have higher requirements for its anti-corrosion performance. The occurrence of steel structure corrosion will significantly reduce the strength, plasticity, toughness and other mechanical properties of the steel structure, and reduce its use effect. At present, most of the surfaces are coated with fireproof and anti-corrosion coatings protection of steel structures. [0003] At present, common anti-corrosion coatings have the following problems: First, the heavy metals and pho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/65C09D7/62
CPCC08K2003/2241C09D5/08C09D163/00C09D7/61C09D7/62C09D7/65C08L5/08C08K9/08C08K9/06C08K3/22C08K3/042C08K13/06
Inventor 曹红杰贺爱轩贺国仓曹永杰李龑毛自高戴宁王双锋
Owner 广州市上善纳米材料有限公司
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