Preparation method of a magnetic wave-absorbing material resistant to marine environment

A magnetic and wave-absorbing coating technology, applied in the field of wave-absorbing materials, can solve the problems of long service life, complex process, inability to take into account stealth performance, and reduced stealth performance, so as to achieve low production costs, improve impedance matching characteristics, and improve marine resistance. Effects of environmental properties

Active Publication Date: 2022-06-17
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the existing wave-absorbing materials are easy to corrode and rust in the harsh marine environment, so they cannot take into account the problems of stable stealth performance and long service life, as well as the problems of complex process, difficult operation and serious decline in stealth performance.

Method used

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  • Preparation method of a magnetic wave-absorbing material resistant to marine environment
  • Preparation method of a magnetic wave-absorbing material resistant to marine environment
  • Preparation method of a magnetic wave-absorbing material resistant to marine environment

Examples

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Embodiment 1

[0064] (1) 170g of carbonyl iron powder with an average particle size of 5 μm (as a magnetic absorbent) was added to 30g of epoxy resin, 20g of xylene (as a diluent) was added, and a rotating speed of 1500r / min was used for mechanical stirring for 1 hour to obtain Paint 1: Add 10 g of acetylene carbon black to 190 g of epoxy resin, add 20 g of xylene (as a diluent), and mechanically stir for 1 hour at a rotational speed of 1500 r / min to prepare paint 2. Pour the two kinds of coatings into the watering can respectively, and spray alternately according to the procedure of coating 2-surface dry-coating 1-surface-dry-coating 2, to obtain a wave-absorbing coating with a thickness of 0.5mm, wherein the magnetic coating and the dielectric coating are applied. The thickness ratio of the layers is 6:1, and the thickness of each dielectric layer is the same, and the thickness of each magnetic layer is the same.

[0065] (2) Mechanically crush the cured wave-absorbing coating, add 300 g ...

Embodiment 2

[0069] The present embodiment 2 is basically the same as the embodiment 1, except that the average particle size of the carbonyl iron powder in step (1) is 2 μm.

Embodiment 3

[0071] This Example 3 is basically the same as Example 1, except that the average particle size of the carbonyl iron powder in step (1) is 50 μm.

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Abstract

The invention relates to a preparation method of a magnetic wave-absorbing material resistant to marine environments. The preparation method of the wave-absorbing material comprises the following steps: mixing a magnetic absorber and a dielectric absorber with a resin matrix and a diluent respectively to obtain two kinds of wave-absorbing coatings, and then spraying the two kinds of coatings alternately to obtain a wave-absorbing coating. The cured wave-absorbing coating is mechanically crushed by ball milling to obtain a microscopic multi-layer magnetic absorbent powder, which is then mixed with resin and molded to obtain a magnetic wave-absorbing material with resistance to marine environments. The magnetic absorber and the dielectric absorber in the preparation method form a uniform interlayer structure, which improves the impedance matching characteristic and enhances the corrosion resistance of the material while reducing the density of the wave absorbing material. The preparation method provided by the invention is simple and feasible, the process is mature and stable, the production cost is low, and large-scale production is possible.

Description

technical field [0001] The invention relates to the technical field of wave absorbing materials, in particular to a preparation method of a magnetic wave absorbing material resistant to marine environment. Background technique [0002] With the continuous development of modern radio technology and the continuous improvement of radar detection methods, the battlefield survivability of weapons and equipment is greatly threatened. In order to improve the ability of weapons and equipment to survive, penetrate defense and strike in depth on the battlefield, the development of military stealth technology has become a hot spot in the field of military research in the world. In recent years, countries have been vigorously developing their naval power and enhancing their ability to fight in the open sea. In the face of the complex marine environment with high humidity and high salt fog, the wave absorbing materials used in weapons and equipment should not only have good stealth perf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/24H01F41/00C09D163/00C09D175/04C09D179/08C09D5/08C09D5/32C09D5/23
CPCC09D163/00C09D179/085C09D175/04C09D5/08C09D5/32C09D5/23C08K2201/005C08K3/04C08K3/18
Inventor 刘甲卢明明吕通宫元勋赵宏杰
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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