Epoxy resin coating with electrically and thermally conductive function and preparation method thereof

By combining modified nano-aluminum powder and active flake graphite, the problems of slow current dissipation and filler oxidation and agglomeration in traditional conductive and thermally conductive coatings are solved, achieving high-efficiency conductive and thermally conductive performance of epoxy resin coatings and improving the safety and performance of electrical devices.

CN118440534BActive Publication Date: 2026-05-19HEBEI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI UNIV OF SCI & TECH
Filing Date
2024-06-07
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Traditional conductive and thermally conductive coatings are difficult to dissipate current quickly in electrical devices, leading to local temperature rise and static electricity accumulation, which affects the performance and safety of electrical devices. Furthermore, the oxidation and agglomeration of nano-copper surfaces or the excessive addition of carbon-based fillers also affect performance.

Method used

A combination of modified nano-aluminum powder and activated flake graphite is used. The nano-aluminum powder is modified with ionic liquid to avoid agglomeration, and the activated flake graphite enhances contactability, forming a conductive and thermally conductive network, thereby reducing contact resistance and thermal resistance.

Benefits of technology

It improves the electrical and thermal conductivity of epoxy resin coatings, enhances the ability to transfer charge and heat, reduces contact resistance and thermal resistance, and improves the service life and safety of electrical components.

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Abstract

The present application relates to the technical field of paint, and proposes an epoxy resin paint with electrically and thermally conductive functions and a preparation method thereof.The epoxy resin paint comprises component A and component B;component A comprises the following components in parts by weight: 27-51 parts of water-based epoxy resin, 2-6 parts of modified nano aluminum powder, 1-3 parts of active flake graphite, 10-20 parts of solvent, 6-14 parts of diluent, 0.1-0.3 parts of defoaming agent, and 0.1-0.3 parts of leveling agent;component B comprises the following components in parts by weight: 5-15 parts of curing agent;the raw material of the modified nano aluminum powder comprises the following components in parts by weight: 2-6 parts of nano aluminum powder and 1-4 parts of ionic liquid;the ionic liquid is 1-methylimidazole tetrafluoroborate or 1-ethyl-3-methylimidazole dicyanamide salt.Through the above technical solution, the problem of poor electrical conductivity and thermal conductivity of the existing epoxy resin paint is solved.
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