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A kind of radiation protection board and preparation method thereof

A technology of radiation protection and floor layer, applied in the field of building materials, can solve the problems of increased thickness, high price, excessive weight, etc., and achieve the effect of low thickness, low material cost, and reduced material thickness

Inactive Publication Date: 2018-03-06
HAINAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the indoor electromagnetic radiation protection materials in buildings are mixed with cementitious materials and other radiation protection materials such as ferrite materials, soft magnetic metals, carbonyl iron powder, etc., but the above materials are not only expensive but also heavy in weight; while non-magnetic materials are used The prepared electromagnetic wave absorbing material will have the problem of increasing the thickness when improving the electromagnetic wave performance. For example, in order to achieve an absorption of more than 10db at 2-4GHz, the thickness often needs to reach more than 2cm, and this thickness limits its great application.

Method used

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  • A kind of radiation protection board and preparation method thereof
  • A kind of radiation protection board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The commercially available aluminum-plastic plate is the bottom layer with a thickness of 1mm; the first conductive plastic mesh layer with a pore diameter of 5 mesh and a thickness of 1mm is prepared by mixing carbon black and PE at a weight ratio of 22:78 in a kneading machine and film pressing. Control the square resistance at 190Ω / □; mix carbon black and PE at a ratio of 18:82 in a kneader and prepare the second conductive plastic mesh layer with a pore size of 8 meshes and a thickness of 1mm, and control the square resistance at 420Ω / □ □; take the PC surface layer as the protective layer with a thickness of 1mm; the distance between each layer is 2cm, and the air layer in the middle is used for heat dissipation and heat insulation. According to the size of the overall board, there are metal plates around it for fixing, and each layer is connected to the fixing board. Two water leakage holes can be designed in the lower part; two ventilation holes can be designed on...

Embodiment 2

[0095] The commercially available aluminum-plastic plate is the bottom layer with a thickness of 1.5mm; the first conductive plastic mesh layer with a pore size of 6 mesh and a thickness of 0.5mm is prepared by mixing carbon fiber and PVC at a weight ratio of 38:62 in a kneading machine and film pressure The square resistance is controlled at 200Ω / □; carbon fiber and PVC are mixed in a mixing machine at a ratio of 30:70, and the membrane pressure is prepared to obtain the second conductive plastic mesh layer with a pore diameter of 7 mesh and a thickness of 0.5mm. The square resistance is controlled at 400Ω / □; take the PC surface layer as the protective layer with a thickness of 0.5mm; the distance between each layer is 1.9cm, and the air layer for heat dissipation and heat insulation in the middle. According to the size of the overall board, there are metal plates around it for fixing, and each layer is connected to the fixing board. A radiation shield is obtained as a whole...

Embodiment 3

[0098] The commercially available aluminum-plastic plate is the base layer with a thickness of 1.6mm; the first conductive plastic net with a pore diameter of 6 mesh and a thickness of 0.3mm is prepared by mixing carbon black and PVC in a weight ratio of 33:67 in a kneading machine and film pressing layer, the control square resistance is 220Ω / □; carbon fiber and PVC are mixed in a mixing machine at a ratio of 30:70, and the membrane pressure is prepared to obtain the second conductive plastic mesh layer with an aperture of 7 mesh and a thickness of 0.4mm. The control square resistance is at 390Ω / □; the PC surface layer is used as a protective layer with a thickness of 0.8mm; the distance between each layer is 2.1cm, and the air layer is in the middle for heat dissipation and heat insulation. According to the size of the overall board, there are metal plates around it for fixing, and each layer is connected to the fixing board. A radiation shield is obtained as a whole.

[00...

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Abstract

The invention provides a radiation preventing plate which comprises a bottom plate layer, a first conductive plastic net layer, a second conductive plastic net layer and a protecting layer, wherein the bottom plate layer is formed by a conductive layer; the square resistance of the first conductive plastic net layer is 180-220omega / sq; the distance between the bottom plate layer and the first conductive plastic net layer is 1.8-2.2cm; the square resistance of the second conductive plastic net layer is 380-420omega / sq; the distance between the first conductive plastic net layer and the second conductive plastic net layer is 1.8-2.2cm; the distance between the second conductive plastic net layer and the protecting layer is 1.8-2.2cm; the bottom plate layer, the first conductive plastic net layer, the second conductive plastic net layer and the protecting layer are fixed by using a fixing plate in sequence. By controlling the materials, the square resistances and the distances of different layers, electromagnetic radiation can be well absorbed.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a radiation shield and a preparation method thereof. Background technique [0002] With the rapid development of the information society, electronic products are becoming more and more popular. While electronic products bring great convenience to people, they also bring certain harm. In particular, the widespread use of electronic devices with built-in information processing devices, and the increasing speed of CPU calculations have resulted in more and more high-frequency electromagnetic wave radiation and noise pollution. The deteriorating electromagnetic environment not only affects the communication, computer, and signal propagation of various electronic systems that human life increasingly relies on, causing malfunctions of system devices and unpredictable disasters, but also poses a threat to human health. Studies have shown that working, studying and living in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21F1/10G21F1/12G21F3/00
CPCG21F1/103G21F1/125G21F3/00
Inventor 郝万军郁信丹夏兰陈伟鹏何楠
Owner HAINAN UNIV