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Multilayer hollow composite wave-absorbing material

A composite wave-absorbing material and hollow structure technology, applied in the field of wave-absorbing materials, can solve problems such as poor absorption of low-frequency microwaves and high density of ferrite, and achieve increased dielectric constant, increased magnetic permeability, and increased absorbing loss. Effect

Inactive Publication Date: 2017-09-15
陈剑桃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the wave-absorbing material is generally composed of an absorber and a matrix material. Among them, the absorber is responsible for absorbing electromagnetic waves, and the matrix material is the carrier of the absorber; the ideal wave-absorbing material should have strong absorption, wide frequency band, thickness It has the advantages of thinness and light weight, but traditional microwave absorbing materials such as ferrite have problems such as high density and poor absorption of low-frequency microwaves.

Method used

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  • Multilayer hollow composite wave-absorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step 1, prepare hollow nickel

[0046] a) carbonyl iron powder pretreatment

[0047] Ultrasonically treat carbonyl iron powder with a particle size of about 5 μm in acetone for 50 minutes to remove impurities on its surface, then soak it in 1mol / L dilute hydrochloric acid for 20 seconds to remove the oxide film on its surface, and put it away after treatment Dry in a vacuum oven;

[0048] b) Configure the plating solution

[0049] Mix 0.1mol / L nickel sulfate solution and 40g / L sodium tartrate solution, after fully stirring, add 0.8g / L thiourea solution and continue stirring to allow thiourea to fully dissolve, then add 55g / L hydrazine hydrate solution, fully Stir evenly to obtain a turbid solution, add 1mol / L sodium hydroxide solution to the turbid solution to adjust the pH to 11 while stirring, so that the turbid solution becomes a solution without precipitation, which is the nickel plating solution;

[0050] c) Nickel plating

[0051] Put the prepared plating solu...

Embodiment 2

[0065] Step 1, prepare hollow nickel

[0066] a) carbonyl iron powder pretreatment

[0067] Ultrasonically treat carbonyl iron powder with a particle size of about 5 μm in acetone for 50 minutes to remove impurities on its surface, then soak it in 1mol / L dilute hydrochloric acid for 20 seconds to remove the oxide film on its surface, and put it away after treatment Dry in a vacuum oven;

[0068] b) Configure the plating solution

[0069] Mix 0.1mol / L nickel sulfate solution and 40g / L sodium tartrate solution, after fully stirring, add 0.8g / L thiourea solution and continue stirring to allow thiourea to fully dissolve, then add 55g / L hydrazine hydrate solution, fully Stir evenly to obtain a turbid solution, add 1mol / L sodium hydroxide solution to the turbid solution to adjust the pH to 11 while stirring, so that the turbid solution becomes a solution without precipitation, which is the nickel plating solution;

[0070] c) Nickel plating

[0071] Put the prepared plating solu...

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Abstract

The application relates to a multilayer hollow composite wave-absorbing material, made by mixing magnesium phenolic resin as a substrate with TiO2 / SiO2 / hollow nickel, zeolite powder, barite powder, carbonyl iron powder and carbon nanotubes as filling materials.

Description

technical field [0001] The present application relates to the technical field of wave-absorbing materials, in particular to a composite wave-absorbing material with a multilayer hollow structure. Background technique [0002] On the basis of the rapid development of electronic information, electromagnetic waves, as the main carrier, have flooded people's production and life. The electromagnetic pollution in the air is deteriorating day by day, which makes the electromagnetic interference more and more serious. Electromagnetic interference can make the equipment not work normally, resulting in accidents and losses. cause medical accidents; in aviation, due to electromagnetic environment interference, Sydney line propagation errors occur in radar stations and other equipment, which makes aviation services unable to work normally and poses a serious threat to aviation safety; for the human body, electromagnetic radiation is the cause of cardiovascular diseases, The main cause ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K13/06C08K9/10C08K7/24C08K3/34C08K3/30C08K3/08C09K3/00
CPCC08K13/06C08K3/08C08K3/30C08K3/34C08K7/24C08K9/10C08K2003/0856C08K2003/3045C08K2201/011C09K3/00C08L61/06
Inventor 陈剑桃
Owner 陈剑桃
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