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Blockboard with electromagnetic wave absorption function and preparation method thereof

A technology of blockboard and wave function, which is applied in the field of blockboard with electromagnetic wave absorption function and its preparation, can solve problems such as poor electromagnetic wave absorption performance, and achieve the effects of good impedance matching, effective absorption, and reduced thickness

Active Publication Date: 2022-01-28
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a blockboard with electromagnetic wave absorption function and its preparation method, which solves the problem of poor electromagnetic wave absorption performance of wood-based materials in existing building decoration materials, and realizes the effective absorption of electromagnetic waves by wood-based materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Evenly disperse the adhesive and the wave absorbing agent in the solvent to obtain a wave-absorbing dipping glue; wherein the adhesive, the wave absorbing agent and the solvent are respectively polyvinyl alcohol, carbon black and water, and their contents are by weight percentage They were 10%, 2% and 88% respectively.

[0039] (2) Take 5 ordinary slabs, respectively No. 1, No. 2, No. 3, No. 4 and No. 5 slabs, the material of No. 1 and No. 2 slabs is poplar, and the thickness is 0.5mm. The material of No. 4 slab is Chinese fir with a thickness of 2.2 mm, and the material of No. 5 slab is pine with a thickness of 1.2 mm; the above-mentioned wave-absorbing dipping glue is evenly coated on both surfaces of No. 4 slab once, and dried to obtain No. 4 absorbing functional slab.

[0040] (3) Immerse the glass fiber mesh material in the above-mentioned wave-absorbing impregnating glue, coat the surface with a layer of wave-absorbing impregnating glue, take it out and dry i...

Embodiment 2

[0044] (1) Evenly disperse the adhesive and the wave absorbing agent in the solvent to obtain a wave-absorbing dipping glue; wherein the adhesive, the wave absorbing agent and the solvent are respectively styrene-acrylic emulsion, graphene and water, and their contents are by weight percentage In total, they were 40%, 5% and 55% respectively.

[0045] (2) Take 5 ordinary slabs, respectively No. 1, No. 2, No. 3, No. 4 and No. 5 slabs, the material of No. 1 and No. 2 slabs is poplar, and the thickness is 0.5mm. The No. 4 slab is made of Chinese fir with a thickness of 2.2 mm, and the No. 5 slab is made of pine wood with a thickness of 1.6 mm; the above-mentioned wave-absorbing dipping glue is evenly coated on the upper surface of No. 2 common slab twice, Dry to obtain the No. 2 wave-absorbing functional slab; apply the above-mentioned wave-absorbing dipping glue on both surfaces of the No. 4 ordinary slab evenly once, and dry to obtain the No. 4 wave-absorbing function slab; Th...

Embodiment 3

[0050] (1) Evenly disperse the adhesive and the wave absorbing agent in the solvent to obtain a wave-absorbing dipping glue; wherein the adhesive, the wave absorbing agent and the solvent are respectively polyvinyl alcohol, graphene and water, and their contents are by weight percentage In total, they are 30%, 5% and 65% respectively.

[0051] (2) Take 5 ordinary slabs, respectively No. 1, No. 2, No. 3, No. 4 and No. 5 slabs, the material of No. 1 and No. 2 slabs is poplar, and the thickness is 0.4mm. The No. 4 slab is made of Chinese fir with a thickness of 2.0 mm, and the No. 5 slab is made of pine with a thickness of 1.0 mm.

[0052] (3) The wave absorbing agent is added to the ordinary binder in 2 different proportions to obtain 2 kinds of wave absorbing agent concentrations; the wave absorbing agent is nano manganese dioxide, in terms of mass fraction, The concentration of absorbing agent is 5.0% and 10.0% respectively; the common binder is biological glue.

[0053] (4)...

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Abstract

The application discloses a blockboard with electromagnetic wave absorption function and a preparation method thereof, which relate to the field of building materials. Wherein the blockboard is composed of two or more layers of wave-absorbing functional slabs or ordinary slabs and electromagnetic wave absorbing mesh materials bonded with a wave-absorbing functional adhesive or an ordinary adhesive; the wave-absorbing functional slabs One or both sides of the electromagnetic wave-absorbing dipping glue is coated with a wave-absorbing glue; the surface of the electromagnetic wave-absorbing grid material is dipped or brushed with a wave-absorbing dipping glue; the components of the wave-absorbing dipping glue include a wave-absorbing agent; The components of the above-mentioned wave-absorbing adhesive include wave-absorbing agents. The application solves the problem of poor electromagnetic wave absorption performance of wood-based materials in existing building decoration materials, and realizes the effective absorption of electromagnetic waves by wood-based materials.

Description

technical field [0001] The application relates to the field of building materials, in particular to a blockboard with electromagnetic wave absorption function and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, and electronic and electrical equipment are more and more widely used in many fields such as communication, industry, scientific research, medical treatment and broadcasting, the living environment and working environment of human beings are almost surrounded by electronic, electrical and communication equipment. , the electromagnetic radiation generated by these devices has led to the deterioration of the space electromagnetic environment. Electromagnetic radiation pollution has become a new type of pollution with huge potential harm. Electromagnetic wave absorbing building material is a functional building material that can convert electromagnetic energy into heat energy through energy conversion or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D3/00
CPCB27D3/00
Inventor 冀志江李彬解帅王静张琎珺
Owner CHINA BUILDING MATERIALS ACAD