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Wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and preparation method thereof

A wave absorbing material and flake powder technology, applied in the field of material science, can solve the problems of easy chemical reaction, complex interface effect, complex preparation process, etc., and achieve good material density and uniformity, good compactness, and equipment requirements simple effect

Inactive Publication Date: 2017-04-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ferrite is a kind of research and application that is widely used. There have been many researches on the compounding of inorganic magnetic powder and organic matter. The reflection loss of a single ferrite is small and the frequency bandwidth is narrow. In order to improve its absorbing performance, the main method adopted is It is a chemical composite method (two or more types of ferrite or ferrite and conductor composite), its preparation process is complex, chemical reactions are prone to occur during the composite process, the interface effect is complex, and the adsorption performance is poor

Method used

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  • Wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and preparation method thereof
  • Wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and preparation method thereof
  • Wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and preparation method thereof

Examples

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Effect test

Embodiment 1

[0050] A (001) Ba 3 co 2 Fe 24 o 41 A wave-absorbing material filled with flake powder and a preparation method thereof, characterized in that the chemical expression of the wave-absorbing material is x(001)Ba 3 co 2 Fe 24 o 41 / (1-x)Ba 3 co 2 Fe 24 o 41 , where x is (001)Ba 3 co 2 Fe 24 o 41 The mass percentage of flake powder, and x=5%.

[0051] Above (001) Ba 3 co 2 Fe 24 o 41 / Ba 3 co 2 Fe 24 o 41 The preparation method of wave-absorbing material comprises the following steps:

[0052] (1) BaCO 3 , Fe 2 o 3 , NaCl is accurately weighed with an electronic balance, placed in a ball mill jar, mixed well, taken out and dried for later use. of which BaCO 3 , Fe 2 o 3 The mass ratio of the mass sum of NaCl to NaCl is 1:1, BaCO 3 with Fe 2 o 3 The amount according to the general chemical formula BaFe 12 o 19 Weighing; the mass ratio of the material used for ball milling, balls, and alcohol is 1:2:1, the speed of the ball mill is 500r / min, the bal...

Embodiment 2

[0068] A (001) Ba 3 co 2 Fe 24 o 41 A wave-absorbing material filled with flake powder and a preparation method thereof, characterized in that the chemical expression of the wave-absorbing material is x(001)Ba 3 co 2 Fe 24 o 41 / (1-x)Ba 3 co 2 Fe 24 o 41 , where x is (001)Ba 3 co 2 Fe 24 o 41 The mass percentage of flake powder, and x=10%.

[0069] Above (001) Ba 3 co 2 Fe 24 o 41 / Ba 3 co 2 Fe 24 o 41 The preparation method of wave-absorbing material comprises the following steps:

[0070] (1) The raw material BaCO 3 , Fe 2 o 3 , NaCl is accurately weighed with an electronic balance, placed in a ball mill jar, mixed well, taken out and dried for later use. The raw material BaCO 3 , Fe 2 o 3 The mass ratio of the mass sum of NaCl to NaCl is 1:1, BaCO 3 with Fe 2 o 3 The amount according to the general chemical formula BaFe 12 o 19 Weighing; the mass ratio of materials, balls, and alcohol used for ball milling is 1:2:1, the speed of the ball mi...

Embodiment 3

[0084] A (001) Ba 3 co 2 Fe 24 o 41 A wave-absorbing material filled with flake powder and a preparation method thereof, characterized in that the chemical expression of the wave-absorbing material is x(001)Ba 3 co 2 Fe 24 o 41 / (1-x)Ba 3 co 2 Fe 24 o 41, where x is (001)Ba 3 co 2 Fe 24 o 41 The mass percentage of flake powder, and x=15%.

[0085] Above (001) Ba 3 co 2 Fe 24 o 41 / Ba 3 co 2 Fe 24 o 41 The preparation method of wave-absorbing material comprises the following steps:

[0086] (1) The raw material BaCO 3 , Fe 2 o 3 , NaCl is accurately weighed with an electronic balance, placed in a ball mill jar, mixed well, taken out and dried for later use. The raw material BaCO 3 , Fe 2 o 3 The mass ratio of the mass sum of NaCl to NaCl is 1:1, BaCO 3 with Fe 2 o 3 The amount according to the general chemical formula BaFe 12 o 19 Weighing; the mass ratio of the material used for ball milling, balls, and alcohol is 1:2:1, the speed of the ball ...

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Abstract

A wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and a preparation method thereof are provided. The preparation method comprises: subjecting a solvent and a dispersant to primary ball milling, adding a binder and a plasticizer, carrying out secondary ball milling, adding (001) Ba3Co2Fe24O41 flaky powder and particulate Ba3CoFe24O41 powder, and carrying out flow casting to obtain the wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder. The flow casting technique is used in the invention, materials are dispersed evenly, film thickness is uniform, and prepared casting slurry is nontoxic and friendly to human bodies. The requirement on equipment is simple, the process is stable, suitable for continuous operation and high in production efficiency, allows high automation and has reduced cost, the material has good compactness and uniformity, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of material science, and relates to a wave-absorbing material filled with Z-type ferrite flake powder and a preparation method thereof. Background technique [0002] With the rapid development of electronic technology, radar and communication technology, electromagnetic wave radiation has become another major public hazard after noise pollution, air pollution, water pollution and solid waste pollution. Electromagnetic interference (EMI) generated by electromagnetic wave radiation will not only affect the normal operation of various electronic devices, but also be harmful to human health. Therefore, the development of electromagnetic wave shielding materials with good performance and the evolution of the electromagnetic environment have very urgent scientific significance and practical needs. Traditional absorbing materials have disadvantages such as weak absorbing ability, high density, and narrow absorbing frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/32C04B35/622C09K3/00
CPCC04B35/2633C04B35/622C09K3/00
Inventor 林营刘潇戴菁菁杨海波韩宁王幸孙雨佳高淑雅
Owner SHAANXI UNIV OF SCI & TECH
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