Composite plate with electromagnetic shielding efficiency and antistatic performance and preparation method thereof

An electromagnetic shielding and composite board technology is applied in the technical field of composite materials to achieve the effects of good flame retardancy and wide application range.

Inactive Publication Date: 2011-09-07
NINGBO HAIGE COMPOSITE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, as an electromagnetic shielding board with a decorative effect at the same time, it must meet the requirements of light weight, high strength, flame retardancy, and color coordination between the outer surface and the interior layout, and composite boards that meet the above comprehensive performance requirements have not yet been reported.

Method used

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  • Composite plate with electromagnetic shielding efficiency and antistatic performance and preparation method thereof
  • Composite plate with electromagnetic shielding efficiency and antistatic performance and preparation method thereof
  • Composite plate with electromagnetic shielding efficiency and antistatic performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]Aluminum foil with a thickness of 0.1mm is selected as the middle layer 1 of a good metal conductor, and adhesive is coated on both sides of the aluminum foil, and an aluminum foil fiber cloth heat sealing machine is used to heat-press SH-100 glass fiber mat (glass fiber fabric composite layer 2) on both sides of the aluminum foil. ), configure unsaturated polyester as the base according to the formula ratio, and the stainless steel fiber content in the paste is 5% (the proportioning ratio of each raw material for preparing the paste is: 17 parts of isophthalic unsaturated polyester, low shrinkage resin (polystyrene is 36wt%, monomeric styrene is 64wt%) 6 parts, polyethylene micropowder 2 parts, hydrated aluminum oxide 60 parts, stainless steel fiber 5 parts, special conductive carbon black 5 parts, viscosity reducer 1 part, trigger 0.5 parts of mold release agent, 0.5 parts of thickening agent); then the above-mentioned double-sided heat-pressed SH-100 glass fiber mat al...

Embodiment 2

[0043] Select 40-mesh brass wire mesh, double-sided hot-pressed EWR-400 glass fiber cloth, impregnate the paste containing 3% stainless steel fiber and 3% special conductive carbon black as the matrix of unsaturated polyester (each raw material for preparing the paste The dosage ratio is: 16 parts of o-phthalic unsaturated polyester, 8 parts of low-shrinkage resin (35wt% for polystyrene, 65wt% for monomeric styrene), 2 parts of polyethylene micropowder, 64 parts of hydrated aluminum oxide, stainless steel 3 parts of fiber, 3 parts of special conductive carbon black, 1 part of viscosity reducer, 0.5 part of initiator, 2 parts of release agent, 0.5 part of thickener), other preparation steps are the same as in Example 1, within the frequency range of 10MHz~1500MHz , Test its electromagnetic shielding effectiveness to more than 55dB.

Embodiment 3

[0045] Select 80 mesh stainless steel wire mesh, double-sided heat-bonded EWR-400 glass fiber cloth, impregnate the paste containing 3% stainless steel fiber and 3% special conductive carbon black unsaturated polyester as the matrix (the proportioning ratio of each raw material for preparing the paste It is: 19 parts of bisphenol A type unsaturated polyester, 9 parts of low shrinkage resin (40wt% for polystyrene, 60wt% for monomer styrene), 3 parts of polyethylene micropowder, 59 parts of hydrated aluminum oxide, 3 parts of stainless steel fiber 3 parts, 3 parts of special conductive carbon black, 1 part of viscosity reducer, 0.5 part of initiator, 2 parts of release agent, 0.5 part of thickener), other preparation steps are the same as Example 1, in the range of 100KHz~100MHz frequency, test Its electromagnetic shielding effectiveness reaches above 60dB.

[0046] The actual measurement results of the electromagnetic shielding effectiveness and antistatic ability of the formed...

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Abstract

The invention discloses a composite plate with electromagnetic shielding efficiency and antistatic performance, which is characterized by comprising a metal good conductor intermediate layer (1); glass fiber fabric composite layers (2) are thermally pressed on the front and the back surfaces of the metal good conductor intermediate layer (1); and flame-retardant conducting thickener layers (3) taking unsaturated polyester as matrixes are arranged on the outer surfaces of the glass fiber fabric composite layers (2). The invention also discloses a preparation method of the composite plate. The composite plate provided by the invention not only has electromagnetic shielding efficiency and antistatic performance, but also has the advantages of light weight, high strength, flame retardance and the like.

Description

technical field [0001] The invention relates to the technical field of composite materials with electromagnetic shielding function, in particular to a light-weight and high-strength decorative panel suitable for electronic, microelectronic equipment and mobile computer rooms, especially suitable for ensuring the signal of passenger dedicated lines with the arrival of the era of high-speed railways in China. A composite board with electromagnetic shielding performance and antistatic performance required for all-weather safe operation of equipment and electromagnetic compatibility requirements, and a preparation method thereof. Background technique [0002] With the development of electronic technology and electronic equipment, the harm of electromagnetic waves to the normal use of electronic equipment and the harm to human health need to be governed. At present, the large-scale construction of passenger dedicated lines is in full swing, which puts forward new and higher requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B15/14B32B17/02B32B17/10B32B27/36
Inventor 张宵华乐建华匡伯铭钟斌
Owner NINGBO HAIGE COMPOSITE MATERIAL
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