Preparation method and application of polypyrrole/phytic acid/graphene oxide composite anti-corrosion coating

A graphene composite and composite coating technology, which is applied in the field of metal anti-corrosion and anti-corrosion coating of metal materials, can solve problems such as poor adhesion, pore defects, and lack of good stability, and achieve enhanced bonding force and high Anti-corrosion stability, the effect of good anti-corrosion stability
CN111850657AActive Publication Date: 2020-10-30SUZHOU UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU UNIV OF SCI & TECH
Publication Date
2020-10-30

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Abstract

The invention discloses a preparation method and application of a polypyrrole / phytic acid / graphene oxide composite anti-corrosion coating. The preparation method comprises the following steps: systematically adjusting and controlling the concentration and ratio of pyrrole monomer, phytic acid and graphene oxide dispersion liquid, and carrying out direct electro-deposition of the composite coatingmaterial on the surface of stainless steel through the convenient one-step galvanostatic method. The polypyrrole / phytic acid / graphene oxide composite anti-corrosion coating is applied to corrosion protection of stainless steel in an acid environment to solve the problems that an existing conducting polymer anti-corrosion coating has micropores and is poor in adhesive force and does not have high stability. The preparation method is simple and can realize direct, rapid and large-area deposition of the coating material on the surface of stainless steel; and in addition, the coating is dense in structure and stable in anti-corrosion performance, and has excellent application prospect in the stainless steel material used in an oil and gas well and acid soil and a metal bipolar plate of a fuelcell.
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Description

technical field

[0001] The invention relates to the technical field of anti-corrosion coatings for metal materials, in particular to a preparation method and application of a polypyrrole / phytic acid / graphene oxide composite anti-corrosion coating, which belongs to the field of metal anti-corrosion. Background technique

[0002] Stainless steel is an iron-based alloy rich in chromium. It has a wide range of applications in industry and energy because of its high strength and fracture toughness, excellent passivation performance and electrical conductivity. However, when working in an environment containing corrosive substances for a long time, the corrosion of stainless steel is still inevitable, which will cause serious waste of resources and environmental pollution. Anti-corrosion coating is currently one of the most important methods to improve the corrosion resistance of stainless steel. Conductive polymer coatings are a class of coating systems that are environmentally ...

Claims

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