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A foamed cement-based zeolite-ferrite wave-absorbing material and its preparation method

A technology of foamed cement and wave-absorbing materials, which is applied in the field of wave-absorbing materials, can solve problems such as low absorption efficiency, low strength of matrix materials, and poor environmental adaptability, so as to improve wave-absorbing efficiency, improve wave-absorbing performance, and improve matching Effect

Active Publication Date: 2021-06-04
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing absorbing materials have problems such as narrow frequency band, low absorption efficiency, large mass, high cost, poor stability, and poor environmental adaptability; the strength of the base material is low; lack of combined structure design, durability design and functional design and other shortcomings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0036] The difference between this example and Example 1 is that the raw material composition ratio of the foamed cement-based zeolite-ferrite wave-absorbing material is different. In this example, a foamed cement-based zeolite-ferrite wave-absorbing material is made from the following components at the following weights:

[0037] Portland cement 45kg, water 27kg, hydrogen peroxide 3kg, zeolite@ferrite wave absorbing agent 25kg, thickener 5kg.

[0038] All the other are with embodiment 1.

[0039] The cost price of this embodiment is 249 yuan. When the thickness is 1cm, the strongest absorption peak is -58.8dB at the frequency of 8GHZ, and the strongest absorption peak is -14dB at the frequency of 30GHz.

Embodiment 3

[0041] The difference between this example and Example 1 is that the raw material composition ratio of the foamed cement-based zeolite-ferrite wave-absorbing material is different. In this example, a foamed cement-based zeolite-ferrite wave-absorbing material is made from the following components at the following weights:

[0042] Portland cement 50kg, water 30kg, hydrogen peroxide 5kg, zeolite@ferrite wave absorber 30kg, thickener 2kg.

[0043] All the other are with embodiment 1.

[0044] The cost price of this embodiment is 314 yuan. When the thickness is 1cm, the strongest absorption peak is -60.8dB at the frequency of 8GHZ, and the strongest absorption peak is -18.2dB at the frequency of 30GHz.

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PUM

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Abstract

The invention discloses a foamed cement-based zeolite-ferrite wave-absorbing material, which is made of the following components in the following parts by weight: Portland cement 40-50 parts, water 24-30 parts, hydrogen peroxide 2 ‑5 parts, 20‑30 parts of zeolite@ferrite wave absorber, 2‑8 parts of thickener. A cement-based zeolite-ferrite wave-absorbing material of the present invention is to prepare zeolite@ferrite wave-absorbing agent by using ferrite-supported ferrite, and zeolite@ferrite wave-absorbing agent, hydrogen peroxide, Portland cement, Water and thickener are mixed to form a porous cement-based zeolite-ferrite foam absorbing material with excellent performance. Ferrierite and low-cost foamed porous cement matrix are porous materials. The complex pore structure plays a role in attenuating the intensity of electromagnetic waves. At the same time, ferrite is an excellent magnetic loss absorbing material. Through low-cost foamed porous cement The composite of the base material and the magnetic loss absorbing material can reduce the cost of the absorbing material and improve the performance of the absorbing material.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and in particular relates to a foamed cement-based zeolite-ferrite wave-absorbing material and a preparation method thereof. Background technique [0002] With the rapid development of my country's urban economy, more and more electronic and electrical equipment have entered daily households, and the most closely related to modern people are undoubtedly various household appliances. Computers, TVs, refrigerators, microwave ovens, range hoods, etc. have become an indispensable part of our lives. While they bring great convenience to people's daily life, they also pose a huge threat to people's daily life and health. Therefore, controlling electromagnetic pollution and finding a material that can resist and weaken electromagnetic radiation—wave-absorbing materials have become a major topic in material science. However, the existing absorbing materials have problems such as narrow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/02C04B38/08C04B18/02
Inventor 刘军杨元全郭禹辰刘润清崔云鹏
Owner SHENYANG LIGONG UNIV