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Metal/ceramic wave-absorbing composite material and preparation method thereof

A composite material and ceramic powder technology, applied in shielding materials, chemical instruments and methods, and other chemical processes, can solve the problems of complex preparation process, high preparation cost, and difficulty in the preparation of interference-type ceramic wave-absorbing materials, and achieve The effect of reducing manufacturing costs

Active Publication Date: 2022-05-10
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the shortcomings of the above-mentioned interference-type resin wave-absorbing materials, which have poor high temperature resistance and anti-aging performance, and the preparation of interference-type ceramic wave-absorbing materials is difficult, and the preparation process Complicated and high cost of preparation, a metal / ceramic wave-absorbing composite material and its preparation method are provided. The composite material is composed of a mesh made of metal wire (hereinafter referred to as "metal mesh") and a ceramic matrix, wherein, The ceramic matrix is ​​formed by firing the prepared ceramic powder at a relatively low temperature; the metal mesh is located in the ceramic matrix for interfering with electromagnetic waves entering the ceramic matrix; the preparation process of the present invention is simple, the manufacturing cost is low, and High yield

Method used

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  • Metal/ceramic wave-absorbing composite material and preparation method thereof
  • Metal/ceramic wave-absorbing composite material and preparation method thereof
  • Metal/ceramic wave-absorbing composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing a metal / ceramic wave-absorbing composite material, comprising the steps of:

[0044] (1) will figure 2 Cut the metal mesh numbered S-190 into a size of 160mm×160mm, and set aside;

[0045] (2) Prepare quartz sand, albite, potassium feldspar, borax, talcum powder, and zinc oxide in a weight ratio of 50:2:2:16:8:3, and then add calcium carbonate, the weight percentage of calcium carbonate 3%;

[0046] (3) Utilize a ball mill to carry out ball milling to the raw materials prepared in step (2), to obtain a mixed dry material with a particle size less than 5 microns;

[0047] (4) Add water to the mixed dry material of step (3), continue ball milling to obtain mixed wet material, the weight percentage of water in the mixed wet material is 10%;

[0048] (5) Pour the mixed wet material in step (4) into a metal mold, and embed the metal mesh numbered S-190 cut in step (1) in the mixed wet material;

[0049] (6) molding the mixed wet material in the me...

Embodiment 2

[0054] A method for preparing a metal / ceramic wave-absorbing composite material, comprising the steps of:

[0055] (1) will figure 2 Cut the metal mesh numbered S-090 into a size of 160mm×160mm, and set aside;

[0056] (2) Prepare quartz sand, albite, potassium feldspar, borax, talcum powder, and zinc oxide in a weight ratio of 70:4:4:24:12:5, and then add calcium carbonate, the weight percentage of calcium carbonate 4%;

[0057] (3) Utilize a ball mill to carry out ball milling to the raw materials prepared in step (2), to obtain a mixed dry material with a particle size less than 5 microns;

[0058] (4) Add water to the mixed dry material of step (3), continue ball milling to obtain mixed wet material, the weight percentage of water in the mixed wet material is 8%;

[0059] (5) Pour the mixed wet material in step (4) into a metal mold, and embed the metal mesh numbered S-090 cut in step (1) in the mixed wet material;

[0060] (6) molding the mixed wet material in the me...

Embodiment 3

[0065] A method for preparing a metal / ceramic wave-absorbing composite material, comprising the steps of:

[0066] (1) will figure 2 The metal mesh numbered S-052 is cut into a size of 160mm×160mm for use;

[0067] (2) Prepare quartz sand, albite, potassium feldspar, borax, talcum powder, and zinc oxide in a weight ratio of 60:3:3:20:10:4, and then add calcium carbonate, the weight percentage of calcium carbonate 5%;

[0068] (3) Utilize a ball mill to carry out ball milling to the raw materials prepared in step (2), to obtain a mixed dry material with a particle size less than 5 microns;

[0069] (4) Add water to the mixed dry material of step (3), continue ball milling to obtain mixed wet material, the weight percentage of water in the mixed wet material is 6%;

[0070] (5) Pour the mixed wet material in step (4) into a metal mold, and embed the metal mesh numbered S-052 cut in step (1) in the mixed wet material;

[0071] (6) Molding the mixed wet material in the metal ...

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Abstract

The invention belongs to the technical field of wave-absorbing stealth materials, and particularly relates to a metal / ceramic wave-absorbing composite material and a preparation method thereof. The metal / ceramic wave-absorbing composite material is formed by compounding a metal net and a ceramic matrix, and the ceramic matrix is formed by pressing ceramic powder into a green body and sintering the green body in air at 750-800 DEG C for 20-30 min. When the green body is pressed, the metal net is pre-buried in the green body, and the metal net and the ceramic base body are firmly compounded together after sintering. The preparation method has the remarkable advantages of being simple in process, low in manufacturing cost and high in finished product rate, and the prepared metal / ceramic wave-absorbing composite material has excellent comprehensive performance and is an ideal interference type structure wave-absorbing material. Compared with a resin-based wave-absorbing material, the metal / ceramic wave-absorbing composite material has excellent high temperature resistance and aging resistance, and can be used for a long time at 650 DEG C without performance degradation.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing stealth materials, and in particular relates to a metal / ceramic wave-absorbing composite material and a preparation method thereof. Background technique [0002] Absorbing material refers to a functional material that can effectively attenuate incident electromagnetic waves, convert electromagnetic energy into heat energy and dissipate it, or make electromagnetic waves disappear due to interference. It is the core technology of radar stealth, and it is also electromagnetic shielding, avoiding communication equipment interference, preventing Key technologies in civil fields such as information leakage and building radiation protection. Structural absorbing material is a structural-function integrated material with both mechanical properties and absorbing properties. It has many advantages such as not changing the original function of the component, not adding additional weight, and stable ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/76C04B35/14C04B35/622H05K9/00C09K3/00
CPCC04B35/76C04B35/14C04B35/622H05K9/0075C09K3/00C04B2235/3472C04B2235/349C04B2235/3409C04B2235/3284C04B2235/602C04B2235/6567C04B2235/6565C04B2235/77C04B2235/96
Inventor 李向明吕翠翠郁万军刘英霞
Owner YANTAI UNIV
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