Cement base material for anti-electromagnetic radiation building and preparation method thereof

A technology for preventing electromagnetic radiation and cement-based materials, which is applied in building materials, buildings, building components, etc. to achieve integration, broad market prospects, and low prices.

Active Publication Date: 2018-01-09
中建材科创新技术研究院(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a cement-based material for anti-electromagnetic radiation construction, the main purpose of which is to solve the problems existing in the use of metal mesh for electromagnetic shielding

Method used

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  • Cement base material for anti-electromagnetic radiation building and preparation method thereof

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Experimental program
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Embodiment 1

[0038] figure 1 It is a schematic diagram of the structure of the electromagnetic radiation-proof building cement-based material used on the building wall 4 according to the embodiment of the present invention. see figure 1 , the specific preparation process of the cement-based material for the anti-electromagnetic radiation building of the present embodiment is as follows:

[0039] Raw material preparation for the concrete mixture of the reflective layer 3: the cementitious material is composed of cement, quartz sand, mineral powder and microsilica, and the mass ratio of cement, quartz sand, mineral powder, microsilica and water reducer is 1:1.1 :0.14:0.2:0.02, the water-binder ratio is 0.21, the third electromagnetic functional material selects steel fiber and graphite powder, the mixing amount of steel fiber is 4% of the total mass of the third electromagnetic functional material and the gelling material, the graphite powder The mixing amount is 10% of the total mass of t...

Embodiment 2

[0048] This embodiment differs from Embodiment 1 only in that the electromagnetic functional materials and doping amounts of each layer are different. In this embodiment, the first electromagnetic functional material of the wave-transmitting layer is SiC fiber and mica sheet, the dosage of SiC fiber is 5% of the total mass of the first electromagnetic functional material and the gelling material, and the dosage of mica sheet is the first 11% of the total mass of electromagnetic functional materials and gelling materials; SiC fibers are prepared by precursor conversion method, and the resistivity is generally 10 6 Ω.cm or so; the average particle size of mica flakes is 120μm.

[0049] The second electromagnetic functional material of the wave-absorbing layer selects chopped carbon fiber, ferrite and graphite powder, the dosage of chopped carbon fiber is 3% of the total mass of the second electromagnetic functional material and the gelling material, and the dosage of ferrite is ...

Embodiment 3

[0053] This embodiment differs from Embodiment 1 and Embodiment 2 only in that the functional ingredients and dosage of each layer are different.

[0054] In this embodiment, the first electromagnetic functional material of the wave-transparent layer is SiC fibers and hollow microspheres, the dosage of SiC fibers is 3% of the total mass of the first electromagnetic functional material and the gelling material, and the dosage of hollow microspheres is 12% of the total mass of the first electromagnetic functional material and the gelling material.

[0055] The second electromagnetic functional material of the wave-absorbing layer is graphite powder, and the amount of graphite powder is 15% of the total mass of the second electromagnetic functional material and the gelling material.

[0056] The third electromagnetic functional material of the reflective layer is selected from steel fiber, conductive nickel powder and chopped carbon fiber, the amount of steel fiber is 5% of the t...

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Abstract

The invention discloses a constructional electromagnetic radiation shielding cement-based plate and a production method thereof. The cement-based plate comprises, sequentially arranged, a wave transmission layer, a wave absorption layer and a reflection layer, and the cement-based material of the wave transmission layer is doped with a first electromagnetic function material to make electromagnetic waves in a free space go through the wave transmission layer and enter the internal of the constructional electromagnetic radiation shielding cement-based plate as possible; the cement-based material of the wave absorption layer is doped with a second electromagnetic function material to absorb incident electromagnetic waves from the wave transmission layer and electromagnetic waves reflected by the reflection layer in order to attenuate energy of the electromagnetic waves; and the cement-based material of the reflection layer is doped with a third electromagnetic function material to reflect the electromagnetic waves attenuated by the wave absorption layer to prevent entrance of the electromagnetic waves to a building space and multi-time loss of the electromagnetic waves reflected by the reflection layer in the wave absorption layer. The constructional electromagnetic radiation shielding cement-based plate has the advantages of good electromagnetic wave protection effect and high strength.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a cement-based base material for an anti-electromagnetic radiation building and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, a large number of electronic and electrical equipment and facilities such as high-voltage lines, substations, communication base stations, radio and television towers, microwave ovens, induction cookers, and mobile phones are widely used, coupled with the continuous increase of urban population and building density, resulting in urban electromagnetic environment. The pollution of electromagnetic radiation in urban building space has seriously affected people's physical and mental health. As the main component of building materials, cement-based materials play an irreplaceable role in controlling electromagnetic radiation pollution in building space and improving the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B13/04B32B13/00E04B1/92E04C2/04E04C2/30C04B28/04H05K9/00E04D13/16
CPCC04B28/04C04B2111/00258C04B14/06C04B14/36C04B14/062C04B2103/302C04B2103/0068C04B24/24C04B14/386C04B22/06C04B14/024C04B14/022C04B14/48C04B22/04C04B14/22C04B14/4687C04B14/042
Inventor 张忠伦辛志军王明铭
Owner 中建材科创新技术研究院(山东)有限公司
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