Copper ion coupling toughened super-compact urushiol / polyester coating and preparation method thereof

By using copper ion coupling to toughen ultra-dense urushiol/polyester modified resin, the brittleness and impact resistance of unsaturated resin coatings are solved, forming a stable cross-linked network that enhances the antifouling performance and adhesion of the coating, achieving long-lasting antifouling and anti-corrosion effects in marine environments.

CN122445281APending Publication Date: 2026-07-24FUJIAN AGRI & FORESTRY UNIV
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Patent Information

Application Number
CN202610831756.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-10
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Unsaturated resins used as antifouling coatings are brittle, have poor impact resistance, and lack flexibility. They are prone to microcracks and are easily aged in high-temperature or large-temperature-difference environments, resulting in decreased adhesion and a short service life.

Method used

A copper ion-coupled toughened ultra-dense urushiol/polyester modified resin is used. Through the coordination reaction of copper ions and urushiol, a stable cross-linked network is formed. Combined with the spherical structure and a large number of terminal functional groups of polyester, the cross-linking density and interfacial bonding strength of the coating are enhanced, forming a self-renewing surface to inhibit fouling and bioadhesion.

Benefits of technology

It significantly improves the antifouling performance and stability of the coating, enhances the adhesion between the coating and the substrate, inhibits the formation of microcracks, and extends the service life.

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Abstract

The invention discloses a copper ion coupling toughened super-compact urushiol / polyester coating and a preparation method thereof. The coating is prepared from unsaturated resin, copper ion coupled urushiol, polyester, an initiator and a curing agent. According to the preparation method, ortho-phenolic hydroxyl groups in urushiol molecules and copper ions are subjected to a coordination reaction to form a stable urushiol-copper coordination cross-linked network, the network and a hyperbranched polyester matrix form an interpenetrating polymer structure, and the cross-linking density and the interface bonding strength of the coating are remarkably improved. The copper ions are anchored in a coating network in a coordination form, so that long-acting and controllable copper ion release is realized, and the coating is endowed with excellent antifouling performance. Polyester and an unsaturated resin matrix form a moderately cross-linked network structure as a stress release center, meanwhile, reinforcement and toughening of the coating are achieved, microcrack generation and curing shrinkage are effectively inhibited, the coating is endowed with a super-compact microstructure, the stability of the antifouling coating is remarkably improved, and the antifouling coating has wide application prospects in the marine antifouling and anticorrosion field.
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