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Fabric absorbing electromagnetic waves and manufacturing method thereof

A technology for absorbing electromagnetic waves and electromagnetic waves, which is applied in the field of textiles, can solve the problems of narrow electromagnetic wave absorption frequency, low shielding efficiency, and high manufacturing cost, and achieve the effects of improving the service life, strengthening the manufacturing process, and excellently absorbing electromagnetic waves

Inactive Publication Date: 2014-03-12
上海利昂高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an improved electromagnetic wave-absorbing fabric and its manufacturing method, which can overcome the narrow frequency of electromagnetic wave absorption, low shielding efficiency, poor absorption rate in the prior art, and cannot meet the needs of the market. At the same time, the process is complicated and the manufacturing cost is low. high some deficiencies

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 1

[0015] The conventional acrylic spinning pulp used in the fabric base material is added with 3% nano-tourmaline by dry weight, wet-spun, cut into 38mm cotton-type fibers, and directly ionized after drying:

[0016] Acrylic fiber containing tourmaline → chemical reaction bath (ferrous sulfate 8%, cupric chloride 20%, stannous chloride 1%; reducing agent - sodium bisulfite 5%, sodium hypophosphite 5%; vulcanizing agent ——sodium thiosulfate 10%, elemental sulfur 2%; additives—Pingpinga 0.5%, penetrant JFC 0.3%)→washing→drying.

[0017] Get 5kg absorbing electromagnetic wave fiber and 5kg bamboo charcoal fiber to blend into 21 s Yarn, woven into cloth according to 1 / 2 twill, and printed with single-sided rotary screen (paste: graphite 1.5%, hydroxyl iron 2%, lithium niobate 0.8%, acrylate adhesive 3%, the balance is water) . After the electromagnetic wave absorbing fabric is made, in 0.2H Z ~10GH Z Within the range, the shielding effectiveness is 50~80dB, of which the absorpt...

Embodiment 2

[0019] Conventional acrylic fiber spinning pulp used for fabric base material, add 6% nano tourmaline according to dry weight, wet spinning, cut into 38mm cotton fiber, after drying, directly carry out ionization treatment:

[0020] Acrylic fiber containing tourmaline → chemical reaction bath (ferrous sulfate 12%, cupric chloride 22%, stannous chloride 1.5%; reducing agent - sodium bisulfite 4%, sodium hypophosphite 2%; vulcanizing agent ——sodium thiosulfate 8%, elemental sulfur 3%; additives—Pingpinga 0.4%, penetrant JFC 0.5%)→washing→drying.

[0021] Get 8kg absorbing electromagnetic wave fiber and 2kg bamboo charcoal fiber to blend into 42 S Yarn, made into cloth according to 2 / 3 twill weave structure, using single-sided flat screen printing (paste: graphite 3%, hydroxyl iron 5%, lithium niobate 2%, acrylate adhesive 5%, the balance is water ), that is, the electromagnetic wave-absorbing fabric of the present invention.

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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PUM

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Abstract

The invention relates to a fabric absorbing electromagnetic waves. The fabric are characterized in that the fabric comprises a base layer and a surface layer, the base layer is formed by mixing bamboo charcoal fiber and fiber absorbing the electromagnetic waves according to a weight ratio of 1:1-4, the surface layer is formed on the surface of the base layer by screen printing on one side, and the surface layer formed by screen printing on one side is a printing paste layer absorbing the electromagnetic waves. The fiber absorbing the electromagnetic waves comprises 3-6% of nano tourmaline, 1-2% of iron ion, 3-5% of copper ion and 0.8-1% of tin ion, and is spun into 21<S>-42<S> yarn. By 1 / 2 or 2 / 3 cross grain, the fabric structure containing a plurality of faraday cages is formed. A layer of printing paste comprising 1-3% of graphite, 2-5% of iron carbonyl, 0.8-2.0% of lithium niobate and 3-5% of an acrylate adhesive is formed by screen printing on one side. The shielding effectiveness of the fabric under a range of 0.2 HZ to 10GHZ is 50-80 dB, and the electromagnetic wave absorbance is 60-90%.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to an electromagnetic wave-absorbing fabric and a manufacturing method thereof. Background technique [0002] With the development of science and technology, society has entered the electronic age. In addition to being widely used in military scientific research and industrial, agricultural and medical industries, various electronic appliances have now entered thousands of households, promoting the progress of human material civilization. At the same time, They can pollute the environment again, and have become a big social public nuisance now. [0003] It is known that people have started the development of anti-electromagnetic radiation and its products very early. So far, the manufacturing methods of electromagnetic shielding fabrics at home and abroad are to give metals or their compounds to fibers, yarns or fabrics. This kind of electromagnetic shielding fabric only has the f...

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 Applications(China)
IPC IPC(8): B32B33/00B32B19/04B32B27/02D03D15/00D02G3/04D03D15/283D03D15/47D03D15/50
Inventor 刘满华商思善
Owner 上海利昂高科技有限公司