Check patentability & draft patents in minutes with Patsnap Eureka AI!

Composite radar wave-absorbing coating and preparation method thereof

A radar-absorbing coating and composite technology, applied in the direction of radiation-absorbing coatings, camouflage coatings, microsphere preparation, etc., can solve problems such as poor stealth performance, and achieve easy spraying, uniform dispersion, and good crack resistance The effect of flexibility

Inactive Publication Date: 2020-10-16
默格材料(苏州)有限公司
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a composite radar absorbing coating and its preparation method, which solves the problem that the current radar absorbing coating composed of metal oxides suffers from heat radiation or heat transfer due to its inherent characteristics. The problem of poor stealth performance caused by self-generated infrared band

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
  • Composite radar wave-absorbing coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0072] On the other hand, the embodiments of the present invention also provide a method for preparing a composite radar absorbing coating, the method comprising the steps of:

[0073] S1. Prepare microwave-absorbing phase-change microcapsules;

[0074] S2. In parts by weight, take 8-10 parts of matrix resin, 7-9 parts of solvent, 3-5 parts of dispersant, and 2-3 parts of anti-sedimentation agent for mixing. After stirring evenly, use a ball mill at 500r / min Grind and disperse the mixed material for 20-30 minutes at a certain speed to obtain a liquid-phase coating matrix;

[0075] S3. Put the wave-absorbing phase-change microcapsules into a high-speed dispersion grinder and grind the wave-absorbing phase-change microcapsules at a speed of 700-800 r / min for 2-3 hours to obtain a fine particle size of 1800-2000 mesh;

[0076] S4. Take 60-70 parts of the wave-absorbing phase-change microcapsules with a particle size of 1800-2000 meshes prepared in step S3, and 20-30 parts of the...

Embodiment 1

[0085] A preparation method of composite radar wave-absorbing coating, which comprises the following steps:

[0086] S1. Prepare microwave-absorbing phase-change microcapsules;

[0087] S2. In parts by weight, take 10 parts of matrix resin, 9 parts of solvent, 5 parts of dispersant, and 3 parts of anti-sedimentation agent for mixing. After stirring evenly, use a ball mill to grind the mixed material for 20 to 30 minutes at a speed of 500 r / min. Disperse to obtain a liquid-phase coating matrix. The viscosity value of the matrix resin is 55-70mm 2 / s any one of polyurethane, epoxy or water-based acrylic resin. The solvent is selected from any one of methanol, ethanol, ethyl acetate or butyl acetate. The dispersant is made of fatty acid polyethylene glycol fat, and the anti-sedimentation agent is made of 650 low molecular weight polyamide.

[0088] S3. Put the wave-absorbing phase-change microcapsules into a high-speed dispersion grinder and grind the wave-absorbing phase-chang...

Embodiment 2

[0095] A preparation method of composite radar wave-absorbing coating, which comprises the following steps:

[0096] S1. Prepare microwave-absorbing phase-change microcapsules;

[0097] S2. In parts by weight, take 9 parts of matrix resin, 8 parts of solvent, 4 parts of dispersant, and 3 parts of anti-sedimentation agent for mixing. After stirring evenly, use a ball mill to grind and grind the mixed material for 20 to 30 minutes at a speed of 500 r / min. Disperse to obtain a liquid-phase coating matrix. The viscosity value of the matrix resin is 55-70mm 2 / s polyurethane. The solvent is a mixture of methanol and butyl acetate at a volume ratio of 1.2:1. The dispersant is made of fatty acid polyethylene glycol fat, and the anti-sedimentation agent is made of 650 low molecular weight polyamide.

[0098] S3. Put the wave-absorbing phase-change microcapsules into a high-speed dispersion grinder and grind the wave-absorbing phase-change microcapsules at a speed of 700-800 r / min ...

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
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite radar wave-absorbing coating and a preparation method thereof, and relates to the technical field of camouflage coatings. The composite radar wave-absorbing coatingcomprises the following components by weight: 60-70 parts of a wave-absorbing phase-change microcapsule, 8-10 parts of matrix resin, 7-9 parts of a solvent, 3-5 parts of a dispersing agent, 2-3 partsof an anti-settling agent and 1-2 parts of a film-forming agent; wherein the weight part ratio of a capsule core and a wall material forming the wave-absorbing phase-change microcapsule is 2:(1-1.5),and the capsule core comprises the following components by weight: 10-15 parts of nanoscale Yb2O3 particles, 25-30 parts of nanoscale paraffin particles and 20-30 parts of butyl stearate; and the wall material is composed of a polyamide-formaldehyde-melamine copolymer and nanoscale Fe3O4 particles. The composite radar wave-absorbing coating disclosed by the invention has low emissivity in a waveband of 8-14 microns and low reflectivity under laser of 1-1.5 microns, and realizes good infrared stealth and laser stealth in the wave band of 8-14 microns and under the laser of 1-1.5 microns.

Description

technical field [0001] The invention relates to the technical field of stealth coatings, in particular to a composite radar wave-absorbing coating and a preparation method thereof. Background technique [0002] With the development of avionics technology and modern material technology, the importance of absorbing material technology in military and civilian applications is becoming more and more significant. Countries around the world have done a lot of work in this area, and successfully applied wave-absorbing material technology to aviation, aerospace, electromagnetic protection, electromagnetic shielding and other fields. Absorbing material technology is a technology that weakens, suppresses, absorbs, and deflects target electromagnetic waves through the design and use of certain materials. As a convenient, economical and adaptable wave-absorbing material, wave-absorbing coatings were originally developed for the radar absorption needs of aerospace and aviation vehicles....

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
IPC IPC(8): C09D175/04C09D163/00C09D133/04C09D5/32C09D5/30B01J13/06C09K5/06
CPCB01J13/06C08K2003/221C08K2003/2275C08K2201/011C08L2205/035C09D5/30C09D5/32C09D133/04C09D163/00C09D175/04C09K5/06C08L61/32C08L91/06C08K9/10C08K3/22C08K5/101
Inventor 游少雄
Owner 默格材料(苏州)有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com