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A kind of microwave electromagnetic shielding fabric and its manufacturing method

An electromagnetic shielding and fabric technology, applied in textiles and papermaking, metal material coating technology, fiber processing, etc., can solve the problems of low shielding efficiency, unsatisfactory, narrow frequency range of electromagnetic shielding fabrics, etc., to improve the shielding efficiency, Enhance the effect of synergy

Active Publication Date: 2017-05-24
合肥爱家防辐射科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use frequency range of these electromagnetic shielding fabrics is narrow, and the shielding effectiveness is low, which cannot meet the needs of the market.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0049] Use 20 meters of base cloth for degreasing, roughening, and dehumidification, then sputter silver plating, then activate with 5% sulfuric acid aqueous solution, wash with distilled water, and then directly perform one-bath electroless gold plating. Plating bath composition:

[0050] Liquid A: CuSO 4 • 5H 2 O 16g / l;

[0051] Sodium Potassium Tartrate 28g / l,

[0052] AgNO 3 0.8 g / l,

[0053] ZnSO 4 •7H 2 O 4g / l;

[0054] Al 2 (SO4) 3 •8H 2 O 1.5g / l;

[0055] Bipyridyl 0.5g / l (alcoholic liquid),

[0056] NiSO4 •7H 2 O 1.0g / l,

[0057] the rest is water;

[0058] Liquid B: formaldehyde 12ml / l,

[0059] Sodium hypophosphite 4 g / l,

[0060] polyethylene glycol (1000) 2 g / l,

[0061] Ethanol 1.5ml / l,

[0062] the rest is water;

[0063] After preparing liquid A and liquid B respectively, slowly pour liquid B into liquid A while stirring for mixing, adjust the pH value to 12 with sodium hydroxide, and then put the fabric into the one-bath method for electrole...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a microwave electromagnet shielding fabric. The fabric comprises a basic layer and a metal composite coating. The basic layer is made of terylene network silk fabrics and is characterized in that a metal composite coating is arranged on the basic layer, wherein the bottom layer of the metal composite coating is a silver coating with a silver content of 4 to 10 grams per square meter, and the surface layer of the metal composite coating is an aurous coating, and the gold (I) content is 13 to 20 grams per square meter. The shielding performance on electromagnet field is improved, the synergetic effect between metal layers is enhanced, and the effective thickness of fabrics is also taken into account, so the provided fabric can be used in a wide frequency range of 300 MHz-300 GHz, the shielding effectiveness is 60-90 dB, and the reflectivity can reach 98%. The provided fabric has high shielding effectiveness and a strong reflecting performance on microwave electromagnetic radiation, and thus is especially suitable for being applied to industries such as aviation, aerospace, military research, medical industry, mine industry, and the like.

Description

technical field [0001] The invention belongs to the technical field of textile engineering, in particular to a microwave electromagnetic shielding fabric used or worn in occasions requiring electromagnetic shielding and a manufacturing method thereof. Background technique [0002] With the development of science and technology, our society has entered the electronic age. At present, most of the electromagnetic shielding fabrics on the market are made by adding metal or their compounds to the fibers or fabrics. The electromagnetic shielding effect is relatively low, and the frequency range of application is narrow, such as CN1280223A discloses a fabric for shielding electromagnetic waves and its manufacturing method, which discloses a fabric for shielding electromagnetic waves, which is produced by the following steps: (1) selecting matrix materials; (2) cleaning; (3) sensitizing and activating; (4) Electroless copper plating; (5) Electroless nickel plating; (6) Soak the shi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/83C23C28/02
Inventor 刘满华梁昌锐商思善
Owner 合肥爱家防辐射科技有限公司
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