Aircraft surface ablation-resistant anti-aging coating as well as preparation method and application thereof

The organosilicon-boron hybrid oligomer coating formed by chemical cross-linking solves the problems of rapid ablation rate and poor toughness of aircraft in medium-high heat flux and high shear environment, and achieves better UV resistance and flexibility, thereby improving the long-term protection capability of aircraft surface.

CN121759084APending Publication Date: 2026-03-31湖北汇领众科电子技术有限公司
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Patent Information

Application Number
CN202610209362.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-13
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Existing resin-based coatings suffer from rapid ablation, poor toughness, and poor weather resistance under the medium-to-high heat flux and high-shear environment of next-generation aircraft, making it difficult to meet the requirements for long-term thermal protection.

Method used

A coating resistant to ablation and aging is formed by chemical crosslinking using materials such as organosilicon-boron hybrid oligomers, phenolic resins, vinyl silicone rubber, and hydrogen-containing silanes. The Si-O-Si and Si-OB bond structures and vinyl crosslinking are used to improve the flexibility and UV resistance of the coating.

Benefits of technology

It achieves a lower ablation rate, better UV resistance and weather resistance, and higher flexibility, making it suitable for long-term protection of aircraft surfaces and improving the ablation protection effect under shear airflow impact.

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Abstract

The invention belongs to the technical field of coating materials, and particularly relates to an ablation-resistant anti-aging coating on the surface of an aircraft and a preparation method of the ablation-resistant anti-aging coating. A silane coupling agent containing an epoxy group and vinyl and boric acid are used as raw materials, an organic silicon-boron hybrid oligomer with a Si-O-Si and Si-O-B bond stereo structure is obtained by adjusting the ratio of the silane coupling agent to the boric acid and serves as a bridge, and phenolic resin, hydrogen-containing silane and vinyl silicone rubber are combined together to form the ablation-resistant anti-aging coating. Wherein an epoxy group and a phenolic hydroxyl group are subjected to a condensation reaction, vinyl and a platinum catalyst form a compact cross-linked structure through hydrogen-containing silane, and the obtained coating has a lower ablation rate, better anti-UV weather resistance and higher flexibility, is suitable for long-time protection of the surface of an aircraft, and has a better ablation protection effect under shear airflow impact.
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