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Polyaniline modified glass flake heavy-duty anti-corrosive coating and preparation method thereof

A technology of glass flakes and anti-corrosion coatings, applied in the field of coatings, can solve problems such as corrosion, and achieve the effects of not easy to sink, good storage stability, strong corrosion resistance and impermeability

Active Publication Date: 2010-02-10
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a polyaniline modified glass flake epoxy heavy-duty anti-corrosion coating and its preparation method, which solves the problem that most of the existing glass flake anti-corrosion coatings need to be coated with primer on the surface of steel or other metal substrates during construction. To increase the anti-corrosion performance and prevent corrosion at the interface between the coating and the substrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0055] Prepare polyaniline-modified glass flakes as follows:

[0056] (a) Prepare a mixed aqueous solution of phosphoric acid and phytic acid: wherein the phosphoric acid is 1.5 mol / liter; the phytic acid is 0.5 mol / liter.

[0057] (b) Add aniline to the mixed aqueous solution of phosphoric acid and phytic acid, the concentration of aniline after mixing is: 0.5 mol / liter. Stirring was continued for 0.5 hours. Take 500ml of mixed aqueous solution of phosphoric acid, phytic acid and aniline, add 70g of 240-mesh glass flakes, and stir for 10 minutes, then pre-cool to 8°C.

[0058] (c) Prepare an aqueous solution of an oxidizing agent: select benzoyl peroxide as an oxidizing agent, and prepare a concentration of benzoyl peroxide of 1.5 mol / liter. Precool the aqueous solution of benzoyl peroxide to 8°C.

[0059] (d) Slowly add 500ml of solution (c) into 500ml of phosphoric acid, phytic acid and aniline mixed aqueous solution (b) containing glass flakes within 10-30 minutes, reac...

Embodiment 4-6

[0064] Prepare polyaniline-modified glass flakes as follows:

[0065] (a) Prepare a mixed aqueous solution of phosphoric acid and phytic acid: wherein phosphoric acid is 0.5 mol / liter; phytic acid is 0.1 mol / liter.

[0066] (b) Add aniline to the mixed aqueous solution of phosphoric acid and phytic acid, and the concentration of aniline after mixing is: 0.1 mol / liter. Stirring was continued for 1.5 hours. Take 500ml of mixed aqueous solution of phosphoric acid, phytic acid and aniline, add 20g of 325-mesh glass flakes, and stir for 25 minutes, then pre-cool to 2°C.

[0067] (c) Prepare an aqueous solution of an oxidizing agent: ammonium persulfate is selected as the oxidizing agent, and the concentration of ammonium persulfate prepared is 0.5 mol / liter. The aqueous solution of ammonium persulfate was precooled to 2°C.

[0068] (d) Slowly add 500ml of solution (c) into 500ml of phosphoric acid, phytic acid and aniline mixed aqueous solution (b) containing glass flakes within...

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Abstract

The invention relates to coating technology, in particular to a polyaniline modified glass flake heavy-duty anti-corrosive coating and a preparation method thereof to solve the problems that when theprior glass flake anti-corrosive coatings are constructed, most of the glass flake anti-corrosive coatings require to coat primer on the surface of steel or other metal matrix to improve the corrosionresistance and prevent corrosion between the coat and the interface of the matrix, and the like. The polyaniline modified glass flake heavy-duty anti-corrosive coating comprises epoxy resin, a polyaniline modified glass flake, an amine curing agent and the like. A polyaniline coating layer is formed on the surface of the glass flake by an oxidative polymerization method; the glass flake after thetreatment has the passivating effect on metal; and a phytic coating layer on the surface of the glass flake also has the corrosion inhibiting effect on the metal. The polyaniline modified glass flakeheavy-duty anti-corrosive coating has strong corrosion resistance and permeability resistance, can be applied to heavy-duty anti-corrosive projects such as petrochemical equipment, pipelines, offshore oil platforms, wharf facilities, shipping and the like, and is particularly suitable for protecting wave splashing zones and tidal difference zones.

Description

technical field [0001] The invention relates to paint technology, in particular to a polyaniline-modified glass flake epoxy heavy-duty anti-corrosion paint and a preparation method thereof. Background technique [0002] Chinese invention patent (Patent No. ZL91111830.6) proposes a preparation method of glass flake anticorrosion coating, which is composed of epoxy resin, glass flake, solvent, titanate coupling agent, and modified amine curing agent. The Chinese invention application (publication number CN 1789351A) discloses a glass flake cement coating, which consists of vinyl ester resin, glass flakes and additives, and is used in places with high requirements for flue gas desulfurization and anticorrosion. Chinese invention patent (Patent No. ZL 93117158.X) proposes a method for preparing a boron-modified phenolic resin anti-corrosion composite material containing glass flakes. Chinese invention patent application (publication numbers CN 1861717A, 1861718A, 1861719A) prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D7/12C09D5/08C09C1/28C09C3/10
Inventor 刘福春郝永胜王震宇史洪微韩恩厚柯伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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