Preparation method of environment-friendly outdoor matt powder coating

By combining HAA microcapsules with a composite polyester matrix and functional fillers, the problem of balancing environmental friendliness, matting effect, and weather resistance in outdoor matte powder coatings has been solved. This results in a significant matting effect and excellent corrosion resistance in environmentally friendly outdoor matte powder coatings, thus improving the overall performance of the coating.

CN122445256APending Publication Date: 2026-07-24NINGBO SOUTH SEA CHEM
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Patent Information

Application Number
CN202610673597.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-15
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing outdoor matte powder coatings suffer from insufficient environmental friendliness, difficulty in achieving both matting effect and overall performance, and particularly inadequate weather resistance and corrosion resistance in highly corrosive environments.

Method used

By utilizing the synergistic effect of HAA microcapsules and a compounded polyester matrix, and through the interfacial modification of epoxidized soybean oil acrylate coating and silane coupling agent KH570, a stable interpenetrating network structure is formed. Combined with the synergistic compounding of functional fillers and functional additives, the matting effect, weather resistance, and environmental friendliness are improved.

Benefits of technology

A triple breakthrough has been achieved in the matting stability and weather resistance of environmentally friendly outdoor matte powder coatings. The coating exhibits significant matting effect and excellent corrosion resistance in highly corrosive environments, with adhesion reaching level 0, thus improving the long-term stability and protective performance of the coating.

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Abstract

The invention discloses a preparation method of an environment-friendly outdoor matt powder coating, and relates to the technical field of powder coatings, and the preparation method comprises the steps of HAA microcapsule preparation, raw material premixing, melt extrusion, tabletting crushing and micro powder grading. The preparation method comprises the following steps: preparing an HAA microcapsule from a hydroxyalkylamide curing agent, epoxidized soybean oil acrylate, a silane coupling agent KH570 and the like; pre-mixing the polyester resin with a polyester matrix, matting resin, a functional filler, a functional additive and the like, and carrying out melt extrusion, crushing and grading to obtain a finished product. The coating prepared by the method is low in 60-degree glossiness, high in corrosion resistance, excellent in adhesive force, good in weather resistance and suitable for outdoor scenes.
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