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Method for preparing laminated wave-absorbing compound material

A composite material and lamination 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, uniform thickness of the film, and simple preparation method Effect

Inactive Publication Date: 2017-05-31
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for preparing laminated wave-absorbing compound material
  • Method for preparing laminated wave-absorbing compound material
  • Method for preparing laminated wave-absorbing compound material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A (001) Ba 3 co 2 Fe 24 o 41 Flaky powder filled with random powder and Ti 3 C 2 -The preparation method of Mxene nano sheet laminated wave-absorbing composite material, it is characterized in that, the chemical expression of this wave-absorbing material is 0.1(001)Ba 3 co 2 Fe 24 o 41 -0.9Ba 3 co 2 Fe 24 o 41 / Ti 3 C 2 -MXene.

[0037] Above 0.1(001) Ba 3 co 2 Fe 24 o 41 -0.9Ba 3 co 2 Fe 24 o 41 / Ti 3 C 2 -The preparation method of MXene absorbing material, comprises the following steps:

[0038] (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 ...

Embodiment 2

[0060] A (001) Ba 3 co 2 Fe 24 o 41 The flake powder is filled with its random powder and Ti 3 C 2 -The preparation method of Mxene nano sheet laminated wave-absorbing composite material, it is characterized in that, the chemical expression of this wave-absorbing material is 0.1(001)Ba 3 co 2 Fe 24 o 41 -0.9Ba 3 co 2 Fe 24 o 41 / Ti 3 C 2 -Mxene.

[0061] Above 0.1(001) Ba 3 co 2 Fe 24 o 41 -0.9Ba 3 co 2 Fe 24 o 41 / Ti 3 C 2 -The preparation method of Mxene wave-absorbing material, comprises the following steps:

[0062] (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 1:1.4, 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 alcoh...

Embodiment 3

[0076] A (001) Ba 3 co 2 Fe 24 o 41 Flake powder filled with Ba 3 co 2 Fe 24 o 41 The wave-absorbing material of granular matrix and its preparation method are characterized in that the chemical expression of the wave-absorbing material is 0.1(001) Ba 3 co 2 Fe 24 o 41 -0.9Ba 3 co 2 Fe 24 o 41 / Ti 3 C 2 -MXene.

[0077] Above 0.1(001)Ba 3 co 2 Fe 24 o 41 -0.9Ba 3 co 2 Fe 24 o 41 / Ti 3 C 2 -The preparation method of MXene absorbing material, comprises the following steps:

[0078] (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 1:1.6, 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...

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Abstract

The invention provides a method for preparing a laminated wave-absorbing compound material. The method comprises the following steps: firstly, preparing a (001)Ba3Co2Fe24O41 flaky powder body by a molten-salt growth method; preparing a Ba3Co2Fe24O41 granular powder body by a sol-gel method; preparing a Ti3C2-MXene nano-flaky powder body by an etching method; effectively laminating a first membrane with the Ti3C2-MXene membrane through surface membrane binding force; and performing tape casting to prepare the laminated wave-absorbing compound material with excellent wave absorbing performance. The method adopts a tape-casting process, material dispersion and membrane thickness are uniform; a tape casting slurry prepared by the method does not have toxicity and cannot hurt human bodies. The method has the advantages of simple equipment, stable process, continuous operation, high production efficiency, high automatic degree, low cost, excellent material compactness and excellent uniformity. The preparation method is simple.

Description

technical field [0001] The invention belongs to the field of material science and relates to a preparation method of a laminated wave-absorbing composite material. 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 band, which cannot meet the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00B32B37/10B32B37/06B29C41/32
CPCC09K3/00B29C41/32B32B37/06B32B37/10
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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