Liquid heavy metal reactor aerosol protective coating and preparation method thereof

Through the double-layer coating structure, combined with the design of polymer and hydrogel, the problem of capturing heavy metal radioactive aerosols is solved, and efficient aerosol capture and stability improvement are achieved, which is suitable for the protection of nuclear power plants.

CN120590829APending Publication Date: 2025-09-05CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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Patent Information

Application Number
CN202510881756.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-27
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

Existing coatings are unable to effectively capture heavy metal radioactive aerosols, especially under high irradiation conditions, and there is insufficient research on the inhibition of aerosol resuspension after film formation, making it difficult to control radioactive aerosol pollution in nuclear power plants.

Method used

It adopts a double-layer coating structure, including a polymer coating and a hydrogel coating. The polymer coating provides mechanical properties and peelability, the hydrogel coating imparts viscosity and charge adsorption capabilities, the nano-silver oxide particles enhance the binding ability, and the positively charged ionic liquid improves the electrostatic adsorption effect.

Benefits of technology

It significantly improves the capture effect of heavy metal aerosols, enhances the stability of the coating and the ability to capture re-deposited aerosols, has high tensile strength, excellent elongation at break, high thermal decomposition temperature and strong UV resistance, and is suitable for high radiation environments.

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Abstract

The invention discloses a liquid heavy metal reactor aerosol protective coating and a preparation method and application thereof, and the liquid heavy metal reactor aerosol protective coating comprises a polymer coating prepared from an acrylic monomer, an emulsifier, an initiator and an organic solvent; the hydrogel coating is prepared from acrylamide, acrylic acid, a cross-linking agent, a photoinitiator and ionic liquid with positive charges; the polymer coating and the hydrogel coating are loaded with nano silver oxide particles. The double-layer coating disclosed by the invention has a relatively good capturing effect on resettled aerosol in air after film formation. A solvent is fixed in the upper hydrogel coating, the solvent is released at a gel-aerosol interface, the surface is locally wetted, and the effects of covering, wetting, adhering, adsorbing and the like on resettled aerosol particles are facilitated.
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