High-temperature-resistant rainproof antistatic coating for electromagnetic window as well as preparation method and application of high-temperature-resistant rainproof antistatic coating

By combining reinforcing silicone rubber with components A and B, and using a low-dielectric cyclodisilazane modified polysilazane crosslinking agent to treat high-temperature resistant fillers and conductive carbon fibers, the performance deficiencies of electromagnetic window coatings under high temperature and rain erosion conditions were solved, achieving excellent dielectric matching and mechanical properties, and improving the coating's high-temperature decomposition resistance and adhesion performance.

CN121136601APending Publication Date: 2025-12-16MARINE CHEM RES INST CO LTD
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Patent Information

Application Number
CN202511406225.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-29
Publication Date
2025-12-16

AI Technical Summary

Technical Problem

Existing electromagnetic window coatings have insufficient performance under high temperature and rain erosion conditions, especially low mechanical strength and poor adhesion. They are also prone to discharge due to static electricity accumulation, which affects aircraft safety.

Method used

A combination of reinforcing silicone rubber, component A, and component B is used. High-temperature resistant fillers and conductive carbon fibers are modified with a low-dielectric cyclic disilazane-modified polysilazane crosslinking agent to form chemical crosslinks, thereby improving the dielectric matching, mechanical properties, and high-temperature adhesion of the coating.

Benefits of technology

Excellent dielectric matching, mechanical properties and high-temperature adhesion performance of the coating are achieved at temperatures above 350°C, which improves the rain erosion resistance and antistatic ability of the electromagnetic window and ensures the safety performance of the aircraft.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a high-temperature-resistant rainproof antistatic coating for an electromagnetic window and a preparation method and application thereof.The coating is prepared from reinforced silicone rubber, a component A and a component B. The reinforced silicone rubber is prepared from raw material components including side vinyl modified hydroxyl-terminated silicone rubber raw rubber, functional filler, a coupling agent and a solvent C; the component A is prepared from raw material components including a cross-linking agent, inorganic heat-resistant filler, special antistatic carbon fibers, an ultraviolet absorbent and a solvent A; the component B is prepared from raw material components including an initiator, a catalyst and a solvent B. A coating prepared from the coating provided by the invention has good rain erosion resistance, static resistance, high temperature resistance and static resistance, and can meet the requirement that the surface of an electromagnetic window is used at high temperature.
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