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Electromagnetic wave absorbing grid material and preparation method thereof

An electromagnetic wave and grid technology, which is applied in textiles, papermaking, fiber processing, etc., can solve problems such as difficult to use, large thickness, and poor wave-absorbing performance, and achieve effective absorption, simple preparation method, and improved wave-absorbing performance.

Inactive Publication Date: 2017-03-15
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the wave-absorbing building materials prepared by structural design have the problems of large thickness and poor wave-absorbing performance, and it is difficult to use them in building materials with different substrates.

Method used

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Examples

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preparation example Construction

[0028] An embodiment of the present invention proposes a method for preparing an electromagnetic wave absorbing grid material, comprising:

[0029] 1) uniformly dispersing the adhesive and the wave absorbing agent in the solvent to obtain the wave absorbing impregnating glue;

[0030] 2) immersing the matrix mesh material in the wave-absorbing impregnating glue for one or more times, coating its surface with a layer of wave-absorbing impregnating glue, taking out and drying to obtain an electromagnetic wave absorbing mesh material;

[0031] Wherein, the components of the wave-absorbing impregnating glue, by weight percentage, include:

[0032] Adhesive: 5-40%;

[0033] Absorber: 0.1-50%;

[0034] Solvent: 40-90%.

[0035] Among them, the adhesive is a water-soluble solid, liquid or solvent-based adhesive, including polyvinyl alcohol, pure acrylic emulsion, styrene acrylic emulsion, polyvinyl alcohol, and the like.

[0036] The wave absorbing agent is at least one of graphi...

Embodiment 1

[0042] An embodiment of the present invention proposes a method for preparing an electromagnetic wave absorbing grid material, comprising:

[0043] 1) uniformly dispersing the adhesive and the wave absorbing agent in the solvent to obtain the wave absorbing impregnating glue;

[0044] 2) immersing the glass fiber mesh material in the wave-absorbing impregnating glue, coating its surface with a layer of wave-absorbing impregnating glue, taking out and drying, and repeating the above-mentioned process twice to obtain an electromagnetic wave-absorbing mesh material;

[0045] Wherein, the components of the wave-absorbing impregnating glue, by weight percentage, include:

[0046] Adhesive: 9.9%, which is polyvinyl alcohol;

[0047] Absorber: 0.1%, which is carbon black;

[0048] Solvent: 90%, water.

[0049] The mesh shape of the mesh of the glass fiber mesh material is square, the mesh side length is 18mm, and the area is 324mm 2 .

[0050] An electromagnetic wave absorbing g...

Embodiment 2

[0052] An embodiment of the present invention proposes a method for preparing an electromagnetic wave absorbing grid material, comprising:

[0053] 1) uniformly dispersing the adhesive and the wave absorbing agent in the solvent to obtain the wave absorbing impregnating glue;

[0054] 2) immersing the basalt fiber mesh material in the described wave-absorbing impregnating glue, making its surface coated with a layer of wave-absorbing impregnating glue, taking out and drying, and repeating the above-mentioned process three times to obtain the electromagnetic wave absorbing mesh material;

[0055] Wherein, the components of the wave-absorbing impregnating glue, by weight percentage, include:

[0056] Adhesive: 40%, pure acrylic emulsion;

[0057] Absorber: 20%, 5% graphite and 15% carbonyl iron powder;

[0058] Solvent: 40%, methanol.

[0059] The mesh shape of the mesh of the basalt fiber mesh material is square, the mesh side length is 18mm, and the area is 324mm 2 .

[006...

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Abstract

The invention relates to an electromagnetic wave absorbing grid material and a preparation method thereof. The preparation method includes the steps: 1) uniformly dispersing adhesives and wave absorbing agents in solvents to obtain wave absorbing impregnation glue liquor; 2) impregnating a matrix grid material in the wave absorbing impregnation glue liquor, and taking out and drying the matrix grid material to obtain the electromagnetic wave absorbing grid material, wherein the wave absorbing impregnation glue liquor comprises, in weight percentage, 5-40% of adhesives, 0.1-50% of wave absorbing agents and 40-90% of solvents. The electromagnetic wave absorbing grid material is simple in preparation method and has wider wave absorbing band width and higher wave absorbing capacity.

Description

technical field [0001] The invention relates to the field of electromagnetic wave absorbing materials, in particular to an electromagnetic wave absorbing grid material and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, and the more and more extensive application of electronic and electrical equipment in many fields such as communication, industry, scientific research, medical treatment and broadcasting, the living and working environment of human beings are almost surrounded by electronic, electrical and communication equipment. , the electromagnetic radiation generated by the operation of these devices leads to the deterioration of the space electromagnetic environment. Electromagnetic radiation pollution has become a new type of pollution that humans cannot perceive but has huge potential hazards. The electromagnetic wave absorbing building material is a functional building material that can convert electr...

Claims

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Application Information

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IPC IPC(8): D06M11/48D06M11/49D06M11/74D06M11/83D06M15/263D06M15/333
CPCD06M11/485D06M11/49D06M11/74D06M11/83D06M15/263D06M15/333
Inventor 冀志江解帅王静杨洋侯国艳
Owner CHINA BUILDING MATERIALS ACAD
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