Nano-deposition heavy-duty graphene composite nano-coating, preparation method and application

By using nano-deposited heavy-duty anti-corrosion graphene composite nano-coating, the problem of temperature resistance and corrosion prevention of existing coatings in extreme environments has been solved, achieving higher temperature resistance and longer corrosion prevention effect, while also providing electromagnetic shielding and radiation protection.

CN122278332APending Publication Date: 2026-06-26HUNAN JINYU ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202411917610.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing coatings that can withstand 2000 degrees Celsius cannot meet the requirements for higher temperature resistance and longer corrosion protection in extreme environments, and they also lack effective electromagnetic shielding and radiation protection performance.

Method used

The nano-deposited heavy-duty anti-corrosion graphene composite nano-coating, which contains polyimide toughened polyphthalonitrile resin, nano calcium silicate, nano silicon nitride, graphene and other components, is applied to the metal surface by electrostatic spraying or electrode coating to form a high-temperature resistant and corrosion-resistant coating.

Benefits of technology

The coating can withstand high temperatures up to 2600℃, salt spray for more than 6000 hours, and has a thermal conductivity as low as 0.011W/mK. It also has excellent wear resistance, oxidation resistance, electromagnetic shielding and radiation protection properties.

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Abstract

The invention discloses a nano-deposition heavy anti-corrosion graphene composite nano-coating which is prepared from the following components in parts by weight: 66-82 parts of polyimide toughened polyphthalonitrile resin composition solution; 1-2 parts of nano calcium silicate; 1-2 parts of nano silicon nitride; 1 to 2 parts of graphene; 3 to 5 parts of 1, 3, 5-tri (trimethoxysilylpropyl) isocyanurate; 2-3 parts of lead powder; 1-2 parts of chromium carbide powder; 1-2 parts of tungsten powder; 1-2 parts of cobalt powder; 1-2 parts of silicon carbide; 1-2 parts of tungsten carbide powder; 1-2 parts of nickel powder; 1-2 parts of boron powder; 1-2 parts of rhenium powder; 1-2 parts of zirconium carbide powder; and 1-2 parts of zirconia powder. The coating is baked, crosslinked and cured to form a powder coating, and has the characteristics of high temperature resistance, rapid cooling and rapid heating resistance, fire resistance, scorch prevention, heat insulation, heat dissipation, damp heat resistance, salt mist resistance, impact resistance, low friction and the like.
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