Low-reflectivity wave-absorbing material and preparation method thereof

A wave-absorbing material and low-reflection technology, applied in the field of wave-absorbing materials, can solve the problem of small impact on firepower performance, and achieve the effects of wide absorption frequency band, simple and efficient process, and low surface density

Inactive Publication Date: 2020-10-09
和爱电磁兼容科技(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of stealth technology and the stealth requirements of high-temperature parts of weapons and equipment, the traditional "thin, wide, light, and strong" can no longer fully meet the requirements of the new generation of air weapons and equipment for radar wave absorbing materials. High-quality and high-temperature-resistant wave-absorbing materials are more and more highly valued by countries all over the world
The wave-absorbing coating has the characteristics of strong adaptability to the shape of the target, simple construction, especially suitable for existing weapons and equipment, relatively small changes to the equipment, and little impact on the maneuverability and firepower performance of the weapon system. Extensive research, the current research on wave-absorbing coatings is mainly concentrated in the field of room-temperature wave-absorbing coatings, and there are very few research reports on high-temperature wave-absorbing coatings

Method used

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  • Low-reflectivity wave-absorbing material and preparation method thereof
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  • Low-reflectivity wave-absorbing material and preparation method thereof

Examples

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Embodiment 1

[0023] A low-reflectivity wave-absorbing material and a preparation method thereof, comprising the following steps,

[0024] Step 1. Weigh the carbonyl iron, and slowly add the carbonyl iron to the aqueous solution of the bluing oxidant under the condition of heating in an oil bath at 140°C. The mass ratio is configured. The mass ratio of carbonyl iron to blue oxidant is 1:1. During the reaction, stir with a mechanical stirrer at a speed of 320r / min. After 60 minutes of reaction, pour out the supernatant and wash it repeatedly with distilled water , put it in a vacuum drying oven at 80°C and dry it for later use to prepare carbonyl oxide iron powder;

[0025] Step 2. Weigh 3-aminopropyltriethoxysilane and add it to absolute ethanol. At the same time, add the carbonyl iron oxide powder dried in step 1 into deionized water, and ultrasonically oscillate for 30 minutes to make it into a carbonyl iron suspension. , the carbonyl iron suspension is added to the ethanol solution of 3...

Embodiment 2

[0030] A low-reflectivity wave-absorbing material and a preparation method thereof, comprising the following steps,

[0031] Step 1. Weigh the carbonyl iron, and slowly add the carbonyl iron to the aqueous solution of the bluing oxidant under the condition of heating in an oil bath at 140°C. The mass ratio is configured. The mass ratio of carbonyl iron to blue oxidant is 1.25:1. During the reaction, stir with a mechanical stirrer at a speed of 320r / min. After 60 minutes of reaction, pour out the supernatant and wash it repeatedly with distilled water , put it in a vacuum drying oven at 80°C and dry it for later use to prepare carbonyl oxide iron powder;

[0032] Step 2. Weigh 3-aminopropyltriethoxysilane and add it to absolute ethanol. At the same time, add the carbonyl iron oxide powder dried in step 1 into deionized water, and ultrasonically oscillate for 30 minutes to make it into a carbonyl iron suspension. , the carbonyl iron suspension is added to the ethanol solution o...

Embodiment 3

[0037] A low-reflectivity wave-absorbing material and a preparation method thereof, comprising the following steps,

[0038] Step 1. Weigh the carbonyl iron, and slowly add the carbonyl iron to the aqueous solution of the bluing oxidant under the condition of heating in an oil bath at 140°C. The mass ratio is configured. The mass ratio of carbonyl iron to blue oxidant is 1.5:1. During the reaction, stir with a mechanical stirrer at a speed of 320r / min. After 60 minutes of reaction, pour out the supernatant and wash it repeatedly with distilled water , put it in a vacuum drying oven at 80°C and dry it for later use to prepare carbonyl oxide iron powder;

[0039] Step 2. Weigh 3-aminopropyltriethoxysilane and add it to absolute ethanol. At the same time, add the carbonyl iron oxide powder dried in step 1 into deionized water, and ultrasonically oscillate for 30 minutes to make it into a carbonyl iron suspension. , the carbonyl iron suspension is added to the ethanol solution of...

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Abstract

The invention belongs to the technical field of wave-absorbing materials, and particularly relates to a low-reflectivity wave-absorbing material and a preparation method thereof. According to the preparation method, carbonyl iron is added into a bluing oxidizing agent aqueous solution, an obtained mixture is stirred for a reaction and then dried for use; 3-aminopropyltriethoxysilane is added intoabsolute ethyl alcohol, carbonyl iron oxide powder is added into deionized water at the same time, ultrasonic oscillation is carried out to form carbonyl iron turbid liquid; the carbonyl iron turbid liquid is added into an ethanol solution of the 3-aminopropyltriethoxysilane, and an obtained mixture is dried for later use after a reaction is finished; an adhesive is added into absolute ethyl alcohol, full stirring until is performed an obtained mixture is transparent; and silicon dioxide coated carbonyl oxide iron powder and a coupling agent are added into an ethanol solution of the adhesive;an absorbent glue solution is arranged in a drying oven so as to be subjected to moisture drying; a block body is taken out so as to be ground into powder, and the powder is put into a hot pressing mold, and therefore, the low-reflectivity wave-absorbing material can be obtained. Defects in the prior art are overcome; the process is simple and efficient; the low-reflectivity wave-absorbing material is good in repeatability and obvious in radar wave absorption effect.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and in particular relates to a low-reflection wave-absorbing material and a preparation method thereof. Background technique [0002] With the development of stealth technology and the stealth requirements of high-temperature parts of weapons and equipment, the traditional "thin, wide, light, and strong" can no longer fully meet the requirements of the new generation of air weapons and equipment for radar wave absorbing materials. High-quality and high-temperature-resistant wave-absorbing materials are more and more highly valued by countries all over the world. The wave-absorbing coating has the characteristics of strong adaptability to the shape of the target, simple construction, especially suitable for existing weapons and equipment, relatively small changes to the equipment, and little impact on the maneuverability and firepower performance of the weapon system. Extensive r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/32C09D183/04C09D179/08C09D161/14H05K9/00
CPCC09D5/32C09D161/14C09D179/08C09D183/04H05K9/0081C08K9/10C08K3/18
Inventor 李坚强
Owner 和爱电磁兼容科技(安徽)有限公司
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