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A multi-coating structure infrared stealth material

A stealth material and multi-coating technology, applied in coatings, anti-corrosion coatings, polyurea/polyurethane coatings, etc., can solve the problems of high infrared emissivity, high density, cumbersome preparation process, etc., and achieve low infrared emissivity, durability The effect of improved corrosion performance and simple manufacturing process

Active Publication Date: 2022-01-07
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of existing infrared stealth materials such as high density, high infrared emissivity, and cumbersome preparation process, the present invention proposes a multi-coating structure infrared stealth material and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Weigh 5 g Fe 3 o 4 Microparticles in a beaker, add 20mL of absolute ethanol.

[0022] (2) Silane coupling agent and Fe 3 o 4 The mass percentage of the microparticles is 5%, and the silane coupling agent is added into absolute ethanol while stirring. Agitate slightly for 1-2 min, take it out and immerse in absolute ethanol to rinse, after drying, put it in a vacuum drying oven to dry, and obtain the surface organically treated Fe 3 o 4。

[0023] (3) Take 8mmol of aniline, add it to hydrochloric acid solution, and add 5mmol of treated Fe while stirring 3 o 4 particle. Dissolve 8mmol ammonium persulfate in hydrochloric acid solution, and treat aniline and Fe 3 o 4 After uniform dispersion in the hydrochloric acid solution medium, the ammonium persulfate solution was added dropwise to initiate the polymerization of aniline. After the drop was completed, the reaction was continued for 3 h, and the temperature was kept at 0-10°C during the reaction.

[0024] (...

Embodiment 2

[0033] (1) Weigh 5 g Fe 3 o 4 Microparticles in a beaker, add 20mL of absolute ethanol.

[0034] (2) Silane coupling agent and Fe 3 o 4 The mass percentage of the microparticles is 5%, and the silane coupling agent is added into absolute ethanol while stirring. Agitate slightly for 1-2 min, take it out and immerse in absolute ethanol to rinse, after drying, put it in a vacuum drying oven to dry, then the surface organically treated Fe 3 o 4。

[0035] (3) Take 8mmol of aniline, add it to the hydrochloric acid solution, and add 5mmol of Fe after being stirred. 3 o 4 particle. Dissolve 8mmol ammonium persulfate in hydrochloric acid solution, and treat aniline and Fe 3 o 4 After uniform dispersion in the hydrochloric acid solution medium, the ammonium persulfate solution was added dropwise to initiate the polymerization of aniline. After the drop was completed, the reaction was continued for 3 h, and the temperature was kept at 0-10°C during the reaction.

[0036] (4) A...

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Abstract

The invention relates to a kind of infrared stealth material with multi-coating structure, and its preparation process is firstly to make Fe 3 o 4 @Polyaniline composite material and polyurethane are mixed evenly at a mass ratio of 5~7:4, and the compressed air method, that is, the spraying method, is applied to the surface of the substrate to form a wet film, and the coating is repeated 2~3 times. The thickness of the wet film coating is 40~60um. Wait for Fe 3 o 4 @Polyaniline Wet film coating is cured, then mix Al powder and polyurethane at a mass ratio of 5~7:4, and then coat it on Fe 3 o 4 @Polyaniline coating surface forms a wet film again, and repeats the Al layer 2~3 times to obtain Fe 3 o 4 @polyaniline / Al's polyurethane multi-coating structure infrared stealth material, in which the thickness of the polyurethane coating of Al powder is 40~60 um. The preparation process of the present invention is simple and convenient, and Al@Fe 3 o 4 @polyaniline core-shell infrared stealth material has low density, low infrared reflectivity, high transparency, and has good physical, mechanical and chemical properties.

Description

technical field [0001] The invention relates to an infrared stealth material with a multi-coating structure, in particular to the shielding and absorption of infrared electromagnetic waves, and belongs to the technical field of infrared stealth materials. Background technique [0002] With the development of science and technology, modern military technology has reached the level that "the target can be destroyed as long as it is discovered". In order to improve the survivability and penetration ability of weapons and equipment, the simplest and most effective means is to adopt stealth technology. Stealth technologies developed according to different detection technologies mainly include visible light and near-infrared stealth, thermal infrared stealth, radar wave stealth, laser stealth, artificial smoke screen stealth, etc. Infrared detection technology is one of the main means to detect military targets, therefore, the infrared stealth material against it has become one o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/24B05D7/14B05D7/00C09D175/04C09D5/08C09D5/10C09D7/62
CPCC09D7/62C09D175/04C09D5/08C09D5/103B05D7/14B05D7/24B05D7/576B05D2202/25B05D2601/20B05D2601/28B05D2503/00B05D2518/00C08K2003/0812C08K2003/2275C08L79/02C08K9/10C08K3/22C08K3/08B05D2420/01B05D2420/02B05D2420/03B05D2420/04B05D2420/05
Inventor 刘崇波张祥刘顺尧徐荣臻
Owner NANCHANG HANGKONG UNIVERSITY
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