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Inorganic glass-based composite ferrite wave absorbing material and preparation method thereof

A technology of inorganic glass and wave absorbing materials, which is applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of limiting the types and sources of raw materials, high production and preparation costs, and not suitable for civil fields, and has a wide range of applications. , The effect of stable product properties and low cost

Active Publication Date: 2018-06-29
HUNAN AEROSPACE MAGNET & MAGNETO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this greatly limits the raw material types and sources of materials, resulting in high production and preparation costs, and is not suitable for civil applications, especially in the field of microwave absorption for civil buildings where a large amount of materials are used.

Method used

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  • Inorganic glass-based composite ferrite wave absorbing material and preparation method thereof
  • Inorganic glass-based composite ferrite wave absorbing material and preparation method thereof
  • Inorganic glass-based composite ferrite wave absorbing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] An inorganic glass-based composite ferrite absorbing material:

[0041] Made of inorganic glass raw material oxide and ferrite pre-sintered material, the mass ratio of the inorganic glass raw material oxide to ferrite pre-sintered material is 1:1; the inorganic glass raw material oxide is SiO 2 , B 2 o 3 、Al 2 o 3 The mass ratio of CaO and CaO is a mixture of 100:60:30:10; the ferrite calcined material is Ni-Zn spinel ferrite calcined material; the thickness of the absorbing material is 3mm; the In the frequency range of 2-18 GHz, the maximum reflection loss of electromagnetic wave is -34.7dB, and the bandwidth of reflection loss exceeding -10 dB is 4.7GHz.

[0042] A preparation method of an inorganic glass-based composite ferrite wave-absorbing material:

[0043] (1) Inorganic glass raw material oxide and ferrite calcined material with a mass ratio of 1:1 (wherein, the inorganic glass raw material oxide is SiO 2 , B 2 o 3 、Al 2 o 3 and CaO with a mass ratio ...

Embodiment 2

[0052] An inorganic glass-based composite ferrite absorbing material:

[0053] Made of inorganic glass raw material oxide and ferrite pre-sintered material, the mass ratio of the inorganic glass raw material oxide to ferrite pre-sintered material is 1:0.25; the inorganic glass raw material oxide is SiO 2 , B 2 o 3 、Al 2 o 3 and CaO with a mass ratio of 100:100:11.1:11.1; the ferrite pre-fired material is the mass ratio of Mn-Zn spinel ferrite pre-fired material and M-type hexagonal barium ferrite pre-fired material It is a mixture of 2:1; the thickness of the absorbing material is 2.5mm; the absorbing material has a maximum reflection loss of -33.5dB in the frequency range of 2 to 18 GHz, and the reflection loss exceeds the bandwidth of -10 dB 3.8GHz.

[0054] A preparation method of an inorganic glass-based composite ferrite wave-absorbing material:

[0055] (1) Inorganic glass raw material oxide and ferrite calcined material with a mass ratio of 1:0.25 (wherein, the in...

Embodiment 3

[0064] An inorganic glass-based composite ferrite absorbing material:

[0065] Made of inorganic glass raw material oxide and ferrite pre-sintered material, the mass ratio of the inorganic glass raw material oxide to ferrite pre-sintered material is 1:0.35; the inorganic glass raw material oxide is SiO 2 , B 2 o 3 and CaO with a mass ratio of 100:100:22.2; the ferrite calcined material is Z-type hexagonal barium ferrite calcined material and the mass ratio of W-type hexagonal barium ferrite calcined material is 2:1 The thickness of the absorbing material is 2.0 mm; the absorbing material has a maximum reflection loss of electromagnetic waves of -31.3 dB within the frequency range of 2 to 18 GHz, and a bandwidth of 4.2 GHz where the reflection loss exceeds -10 dB.

[0066] A preparation method of an inorganic glass-based composite ferrite wave-absorbing material:

[0067] (1) Inorganic glass raw material oxide and ferrite calcined material with a mass ratio of 1:0.35 (wherei...

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Abstract

The invention discloses an inorganic glass-based composite ferrite wave absorbing material and a preparation method thereof. The material is mainly prepared from an inorganic glass raw material oxideand a ferrite pre-sintered material in a mass ratio of 1 to (0.2 to 1.0). The method comprises the following steps: (1) mixing the inorganic glass raw material oxide and the ferrite pre-sintered material in a dry-mixing way, heating and melting to obtain molten liquid; (2) directly pouring the molten liquid into cold water to obtain solid particles; (3) screening the solid particles, and performing heat treatment to obtain the inorganic glass-based composite ferrite wave absorbing material. The material disclosed by the invention integrates the ferrimagnetic property and the dielectric semiconductor property, has good wave absorbing performance in a frequency band of 2-18GHz as well as adjustable range of wave absorbing frequency; the material has the advantages of light weight, thin layer, low density, high thermal stability and strong weather resistance and corrosion resistance, and can be applied to the wave absorbing materials of buildings; the method disclosed by the invention hasa simple process and is suitable for industrial production.

Description

technical field [0001] The invention relates to a wave-absorbing material and a preparation method thereof, in particular to an inorganic glass-based composite ferrite wave-absorbing material and a preparation method thereof. Background technique [0002] Electromagnetic wave radiation has become another major public hazard after noise pollution, air pollution, water pollution, and solid waste pollution. The electromagnetic interference generated by electromagnetic wave radiation not only affects the normal operation of various electronic equipment, but also has great harm to human health. The miniaturization, integration and high-frequency development of electronic technology make the problem of electromagnetic compatibility increasingly prominent, and anti-electromagnetic interference as the core content of electromagnetic compatibility has attracted more and more attention. As a commonly used means of anti-electromagnetic interference, wave-absorbing material technology ...

Claims

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Application Information

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IPC IPC(8): C03C14/00C09K3/00
CPCC03C14/004C03C2214/04C03C2214/17C09K3/00
Inventor 姚锐陈晓宇刘超颜铄清廖孟安张铁军
Owner HUNAN AEROSPACE MAGNET & MAGNETO