Inorganic copolymer anticorrosive coating and preparation method thereof

Through the synergistic effect of modified nano-titanium dioxide and modified epoxy resin, a dense dual protection system of physical barrier and chemical passivation is formed, which solves the problems of film formation, flexibility and stability of inorganic anti-corrosion coatings, and achieves long-term anti-corrosion performance and environmental protection in harsh environments.

CN120795667BActive Publication Date: 2026-06-26IANGSU JINLING SPECIAL PAINT CO LTD
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Patent Information

Application Number
CN202511258015.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-04
Publication Date
2026-06-26
Estimated Expiration
2045-09-04

AI Technical Summary

Technical Problem

Existing inorganic anti-corrosion coatings suffer from poor film-forming properties, insufficient flexibility, easy cracking, insufficient coating density, and uneven dispersion leading to unstable performance, making them difficult to use for a long time in harsh environments such as high temperature, high humidity, and strong acids and alkalis.

Method used

By employing the synergistic effect of modified nano-titanium dioxide, modified epoxy resin, zinc phosphate, and aluminum tripolyphosphate, a dense dual protection system of physical barrier and chemical passivation is formed. Through the improved compatibility between modified nano-titanium dioxide and the base material, the modified epoxy resin and silica sol form an organic-inorganic interpenetrating network structure. Combined with a refined preparation process, the uniform dispersion and stability of the coating are ensured.

Benefits of technology

It significantly improves the corrosion resistance and durability of the coating, enabling long-term use in high-temperature and chemically corrosive environments. The coating has stable performance, is suitable for a variety of substrates, meets environmental protection requirements, and broadens the application range.

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Abstract

The application discloses an inorganic copolymer anticorrosive paint and a preparation method thereof, and relates to the technical field of paints. The inorganic copolymer anticorrosive paint comprises the following raw materials in parts by weight: 20-30 parts of silica sol, 8-15 parts of sodium hydroxide, 30-45 parts of metakaolin, 8-20 parts of quartz sand, 15-25 parts of water, 0.3-2 parts of sodium polyacrylate, 0.2-3 parts of polydimethylsiloxane emulsion, 5-12 parts of modified nanometer titanium dioxide, 6-10 parts of modified epoxy resin, 10-25 parts of hydroxyethyl methacrylate, 5-10 parts of zinc phosphate, 3-8 parts of aluminum tripolyphosphate and 2-6 parts of red iron oxide. The inorganic copolymer anticorrosive paint has scientific raw material proportioning, and the anticorrosive performance is enhanced through the modified nanometer titanium dioxide and the epoxy resin. In the preparation, step-by-step feeding and ultrasonic dispersion are adopted to ensure that the materials are uniform, and vacuum degassing and nitrogen protection are adopted to improve the stability. The silica sol, the zinc phosphate and other components have a synergistic effect, a dense coating is formed, the anticorrosive performance is high, the construction performance is good, and the inorganic copolymer anticorrosive paint is suitable for various scenes.
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