A high-temperature-resistant wave-absorbing coating

By using a multi-layered coating design and self-healing microcapsule technology, the problem of coating damage under mechanical wear and thermal stress is solved, achieving sustained stability and microwave absorption performance of the coating and extending its service life.

CN224335248UActive Publication Date: 2026-06-09SHAANXI TIANDUN CREATIVE MATERIALS TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAANXI TIANDUN CREATIVE MATERIALS TECHNOLOGY CO LTD
Filing Date
2025-05-13
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing coatings are prone to surface damage during use due to factors such as mechanical wear and thermal stress, which affects the overall performance and service life of the coating.

Method used

The coating employs a multi-layer structure, including an adhesive layer, a base layer, an intermediate layer, and a surface layer. Each layer has a notch. It uses a phenolic resin adhesive layer, a silicon carbide-silicon nitride composite ceramic layer, a molybdenum disilicide-zirconia carbide composite coating, and a gradient metal ceramic layer doped with rare earth oxides. Self-healing microcapsules are distributed in the surface layer to form a strong bond and self-healing function.

Benefits of technology

It enhances the stability and durability of the coating, extends its service life, ensures good microwave absorption and protection performance in high-temperature environments, and reduces maintenance costs.

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Abstract

This utility model discloses a high-temperature resistant microwave absorbing coating, relating to the field of microwave absorbing coatings. It includes an adhesive layer, a base layer, an intermediate layer, a high-temperature resistant layer, and a surface layer. The adhesive layer is attached to the surface of an object. The base layer is disposed above the adhesive layer, the intermediate layer is disposed above the base layer, the high-temperature resistant layer is disposed above the intermediate layer, and the surface layer is disposed above the high-temperature resistant layer. The phenolic resin in the adhesive layer forms a strong bond with both the object surface and the base layer. The recessed design between the layers further enhances the interlayer bonding force, ensuring the entire coating adheres tightly to the object and is not easily delaminated or peeled off. Under various mechanical and thermal stresses such as object movement, vibration, and thermal expansion and contraction, it maintains its integrity and stability, ensuring the continuous performance of the coating and enhancing its adaptability and durability in practical applications.
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