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

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 decline in stealth performance, and achieve low production costs, improve marine environment resistance, and simple methods Feasible effect

Active Publication Date: 2020-12-18
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Abstract
  • Description
  • Claims
  • 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 marine environment-resistant magnetic wave-absorbing material
  • Preparation method of marine environment-resistant magnetic wave-absorbing material
  • Preparation method of marine environment-resistant magnetic wave-absorbing material

Examples

Experimental program
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Effect test

Embodiment 1

[0064] (1) Add 170g of carbonyl iron powder (as a magnetic absorbent) with an average particle size of 5 μm into 30g of epoxy resin, add 20g of xylene (as a diluent), and mechanically stir at a speed of 1500r / min for 1 hour to obtain Coating 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 at a speed of 1500 r / min for 1 hour to prepare Coating 2. Pour the two kinds of coatings into the watering cans respectively, and spray them alternately according to the process of coating 2-surface dry-coating 1-surface dry-coating 2 to obtain a wave-absorbing coating with a thickness of 0.5mm, in which the magnetic coating and the dielectric coating 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, and put into a drying oven at 70° C. for 8 hours for curing.

[0065] (2) Mechanically crush the cured wave-absorbing coati...

Embodiment 2

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

Embodiment 3

[0071] 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 marine environment-resistant magnetic wave-absorbing material. The preparation method of the wave-absorbing material comprises the following steps: respectively mixing the magnetic absorbent and the dielectric absorbent with the resin matrix and the diluent to obtain two wave-absorbing coatings, and alternately spraying the two coatings to obtainthe wave-absorbing coating; carrying out mechanical ball-milling crushing on the cured wave-absorbing coating to obtain magnetic absorbent powder with a microscopic multilayer structure, and carryingout mixing and compression molding on the magnetic absorbent powder and resin to obtain the magnetic wave-absorbing material with marine environment resistance. According to the preparation method, the magnetic absorbent and the dielectric absorbent form a uniform sandwich structure, the impedance matching characteristic is improved while the density of the wave-absorbing material is reduced, andthe corrosion resistance of the material is enhanced. The preparation method provided by the invention is simple and feasible, mature and stable in process, low in production cost and capable of realizing large-scale production.

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 environments. 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 survival, penetration and deep strike capabilities of weapons and equipment on the battlefield, the development of military stealth technology has become a research hotspot in the world's military field, and the research on microwave-absorbing materials has attracted widespread attention from all countries. In recent years, various countries have vigorously developed their naval forces and enhanced their combat capabilities in the open sea. Facing the complex marine environment with high humidity and high salt fog, the wave-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D175/04C09D179/08C09D5/08C09D5/32C09D5/23
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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