Water-based metal anticorrosive paint and preparation method thereof

By combining hyperbranched polyphosphate ester and waterborne alkyd resin emulsion with glass flakes and modified nano-cerium oxide particles in a waterborne metal anti-corrosion coating, the problem of poor adhesion of waterborne anti-corrosion coatings is solved, achieving efficient anti-corrosion and simple preparation.

CN121108875APending Publication Date: 2025-12-12HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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Patent Information

Application Number
CN202511427464.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-30
Publication Date
2025-12-12

AI Technical Summary

Technical Problem

Existing water-based anti-corrosion coatings have poor adhesion to metal substrates, resulting in poor anti-corrosion performance. Furthermore, their preparation process is complex, involves a variety of raw materials, and contains organic solvents.

Method used

Hyperbranched polyphosphate ester and waterborne alkyd resin emulsion are used as film-forming substances, combined with raw materials such as glass flakes and organosilane-modified nano-cerium oxide particles to form a dense network structure and complex tortuous paths, thereby improving adhesion and corrosion resistance.

Benefits of technology

A water-based metal anti-corrosion coating that achieves good bonding with the metal substrate simplifies the preparation process, reduces costs, and significantly improves anti-corrosion performance.

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Abstract

The invention discloses a water-based metal anticorrosive paint and a preparation method thereof, and belongs to the technical field of water-based paints. The hyperbranched polyphosphate and the water-based alkyd resin can be subjected to a cross-linking reaction to form a compact network structure, the hyperbranched polyphosphate and a metal interface also have good bonding performance, the adhesiveness of a coating is improved, the water-based alkyd resin has good flexibility, the integrity of the coating is kept, and the water-based alkyd resin has good adhesion to the metal interface. Corrosion media are prevented from permeating, and the purpose of protecting metal for a long time is achieved; by adding the glass flakes, a complex and zigzag path can be formed in the coating, corrosion media are further prevented from permeating into metal, and therefore the corrosion resistance of the coating is improved; the organosilane-modified nano cerium oxide particles can be directionally distributed in the coating, oxygen diffusion is blocked, a rare earth conversion film can be formed on the surface of a metal base material, and a stable passivation layer is generated through hydrolysis, so that electrochemical corrosion is inhibited.
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Citation Information

Patent Citations

  • Chemical bonding type metal anticorrosive water-based paint and preparation method thereof

    CN112574638A

Cited By

  • Wear-resistant alkyd resin coating and preparation method thereof

    CN121471794A