A high-solid low-surface-energy template paint for aluminum alloy templates, a preparation method thereof, and an aluminum alloy template with a coating on the surface

By preparing a template paint for aluminum alloy templates with high solids content and low surface energy, a Michael addition-cured coating with high cross-linking degree is formed, which solves the problems of poor adhesion and insufficient impact resistance of aluminum alloy template coatings, and improves demolding quality and template service life.

CN122103948APending Publication Date: 2026-05-29JIANGXI SANYUE POLYMER MATERIAL CO LTD
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Patent Information

Application Number
CN202610472935.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-10
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing aluminum alloy formwork coatings have poor adhesion to aluminum alloy surfaces, resulting in poor concrete demolding quality. Furthermore, the coatings lack impact resistance and alkali resistance, affecting the appearance and durability of the concrete surface.

Method used

A template paint for aluminum alloy templates with high solids content and low surface energy is used. Through the combination of hydrogen donors, hydrogen acceptors, modified silicone oil and potential catalysts, a highly cross-linked Michael addition curing coating is formed, which enhances adhesion, impact resistance and alkali resistance.

Benefits of technology

It improves the adhesion between the coating and the aluminum alloy substrate, enhances the coating's impact resistance and alkali resistance, increases the number of demolding cycles, ensures a smooth and intact concrete surface, and extends the service life of the formwork.

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Abstract

The application discloses a high-solid low-surface-energy template paint for an aluminum alloy template, a preparation method of the template paint and an aluminum alloy template with a coating on a surface, and belongs to the technical field of template paints. The template paint mainly comprises the following components in percentage by mass: a hydrogen donor 40-60%, a hydrogen acceptor 20-40%, a latent catalyst 0.5-2%, modified silicon oil 0.5-5%, a solvent 10-15%, wherein the hydrogen donor is prepared by ring-opening reaction of liquid epoxy resin with amino alcohol and then ester exchange reaction with acetoacetic acid ester; and the hydrogen acceptor is composed of one or more of 1,6-hexanediol diacrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate and diphenylmethane bismaleimide. The coating formed on the surface of the aluminum alloy template by the high-solid low-surface-energy template paint for the aluminum alloy template has the characteristics of excellent adhesion, good concrete demolding property, high impact resistance and excellent alkali resistance, and can be demolded for multiple times.
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