On-site repair method of high temperature radar and infrared compatible stealth coating

Abstract

The invention relates to the technical field of high-temperature stealth coatings, and specifically discloses a method for on-site repairing of high-temperature radar and infrared compatible stealth coatings, including a method for repairing a patch conductor type high-temperature periodic structural layer. The specific steps include: preparing a conductive coating, the conductive coating It is composed of silver powder, glass powder and organic carrier, and the glass powder is composed of Bi 2 o 3 , B 2 o 3 , Sb 2 o 3 and SiO 2 Composition; the conductive paint is applied to the repaired area by screen printing process, and the repair is completed by drying and sintering with portable heating equipment. The on-site repair method of high-temperature radar and infrared compatible stealth coating also includes the repair of the isolation layer, the patch resistance type high-temperature periodic structural layer and the repair method of the ceramic bottom layer. This repair method has simple process, short repair time, simple and portable equipment used, and can be repaired on site. After restoration, the coating maintains good stealth performance and high temperature stability.

Description

technical field [0001] The invention belongs to the technical field of high-temperature stealth coatings, in particular to an on-site repair method for high-temperature radar and infrared compatible stealth coatings. Background technique [0002] Stealth coatings have the advantages of simple construction, good stealth performance, and are not limited by the shape of weapons. They are widely used in aircraft, missiles, ships and other weapons and equipment. Currently, the more mature stealth coatings are organic stealth coatings used at room temperature. Some hot-end components in aircraft, missiles and other weapons and equipment need to withstand high temperatures and have good stealth performance during operation. The development of radar and infrared composite detection and guidance technology requires coatings to have radar and infrared compatible stealth effects. Radar- and infrared-compatible stealth coatings meet such needs. [0003] High-temperature radar and infra...

AI Technical Summary

Problems solved by technology

[0004] At present, the repair technology of stealth coatings is mainly for organic stealth coatings. The common methods are two repair methods, wave-absorbing patch and paint spraying, but they cannot be applied to high-temperature environments.

High-temperature stealth coatings are generally inorganic material systems, and their inherent brittleness, low adhesion, and need for sintering have put forward new requirements for the repair of high-temperature stealth coatings. At present, there are no relevant materials at home and abroad for reference.

At the same time, in order to ensure the normal attendance rate of the equipment, damaged parts do not have the conditions to be dismantled and returned to the factory. At the same time, it is difficult to have a complete set of large-scale equipment for stealth coating construction on site during the equipment service process. Therefore, it is necessary to develop a system that can be used for on-site stealth coating repair. Raw materials, processes and portable equipment to meet the high-temperature stealth coating field repair requirements

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