Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

A repair method and high-temperature technology, applied in coatings, devices for applying liquid to surfaces, pre-treatment surfaces, etc., can solve the problems of damaged parts that do not have the conditions for dismantling and returning to the factory, cannot be used in high-temperature environments, and require sinterability. , to achieve the effect of simple and portable tools and heating equipment, shortened sintering time, and reduced sintering temperature

Active Publication Date: 2021-10-15
NAT UNIV OF DEFENSE TECH
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • On-site repair method of high temperature radar and infrared compatible stealth coating
  • On-site repair method of high temperature radar and infrared compatible stealth coating
  • On-site repair method of high temperature radar and infrared compatible stealth coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment provides a high-temperature radar infrared-compatible stealth coating on-site repair method for the damage of the patch conductor type high-temperature periodic structural layer in the high-temperature radar and infrared compatible stealth coating, and the size of the damaged area is 5cm*6cm, including the following steps:

[0043] (1) Prepare conductor paint: described conductor paint is made up of following mass percentage raw material: 70% silver powder, 10% glass powder, surplus is organic vehicle, and glass powder is made up of following mass percentage component: 58% Bi 2 o 3 , 25% B 2 o 3 , 13% Sb 2 o 3 and 4% SiO 2 ; The organic vehicle is composed of 85% tributyl citrate, 6% nitrocellulose and 9% lecithin by mass fraction;

[0044] (2) Clean up the damaged area, and use adhesive tape to cover the surrounding complete coating to delineate the repair area;

[0045] (3) Apply the conductive paint obtained in step (1) to the repaired area desc...

Embodiment 2

[0048] In this embodiment, the ceramic bottom layer, the chip resistance type high temperature periodic structure layer, the isolation layer and the chip conductor type high temperature periodic structure layer in the high temperature radar and infrared compatible stealth coating are all damaged, three damages, each damage area is about 5cm*6cm, the area where the three damages are located is 14cm*12cm, and the damage depth of the ceramic bottom layer is 0.5mm. It provides a high-temperature radar infrared compatible stealth coating on-site repair method, including ceramic bottom repair, chip resistance type high-temperature periodic structure Layer repair, isolation layer repair and patch conductor type high temperature period structure layer repair.

[0049] 2.1 Ceramic bottom repair method

[0050] (1) Prepare high-temperature ceramic glue B. High-temperature ceramic glue B is composed of the following raw materials in parts by mass: 13 parts of aluminum dihydrogen phosphat...

Embodiment 3

[0069] In this embodiment, the ceramic bottom layer, the chip resistance type high temperature periodic structure layer, the isolation layer and the chip conductor type high temperature periodic structure layer in the high temperature radar and infrared compatible stealth coating are all damaged, two damages, and the areas where the two damages are located The range is 12cm*10cm, and the damage depth of the ceramic bottom layer is 0.7mm. It provides a high-temperature radar infrared compatible stealth coating on-site repair method, including ceramic bottom repair, chip resistance type high temperature periodic structural layer repair, isolation layer repair and patch guide Body shape high temperature cycle structural layer repair.

[0070] 3.1 Ceramic bottom repair method

[0071] (1) Prepare high-temperature ceramic glue B. High-temperature ceramic glue B is composed of the following raw materials in parts by mass: 15 parts of aluminum dihydrogen phosphate, 48 parts of alumin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
particle sizeaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B05D1/28B05D3/00B05D3/02B05D5/00B05D7/24
CPCB05D1/28B05D3/002B05D3/0254B05D5/00B05D5/005B05D7/24
Inventor 刘海韬黄文质甘霞云黄丽华
Owner NAT UNIV OF DEFENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com