Method for manufacturing high-performance electromagnetic wave shielding fabric

A manufacturing method and electromagnetic wave technology, applied in the fields of magnetic field/electric field shielding, textiles and papermaking, electrical components, etc., can solve the problems of unable to exceed 90dB, insufficient uniformity and reproducibility, insufficient folding resistance of fabrics, etc. Combined fastness, good uniformity, improved folding resistance and the effect of

Inactive Publication Date: 2008-11-12
SHANGHAI WEAVING SCIENCE RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the uniformity and reproducibility of the high-efficiency coating reaching 90dB is not enough, and it cannot break through 90dB, and the fabric folding resistance is not enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: roll coating with slurry

[0033] Substrate: 30g / m 2 Polyester spunbond nonwovens.

[0034] Equipment: Conventional roller coating machine with slurry, the coating slurry in the slurry tank is taken up by the roller with slurry and transferred to the substrate, and then cured after pre-baking by infrared rays.

[0035] Coating slurry formula:

[0036] PH-501F acrylic paste with a solid content of 40% 30%

[0037] Charcoal powder 3%

[0038] Ferrite 5%

[0039] Plasma-treated nanoscale ferrite 0.5%

[0040] Titanium Dioxide Based 8401 Paint White FTW 3%

[0041] Silicone softener CGF 0.5%

[0042] AM-C dispersant 0.5%

[0043] Water 57.5%

[0044] Coating process conditions with slurry roller: single side coating, curing temperature 130°C, curing time 2.5min.

Embodiment 2

[0045] Embodiment 2: roll coating with slurry

[0046] Substrate: 100g / m 2 Polyester spunbond nonwovens.

[0047] Equipment: conventional roller coating machine with slurry.

[0048] Process flow: Polyester spunbonded nonwovens are coated with wave-absorbing materials and mixed with slurry, and then cured after infrared pre-drying.

[0049] Coating slurry formula:

[0050] PH-501F Acrylic Paste with a solid content of 40% 40%

[0051] Charcoal 6%

[0052] Ferrite 6%

[0053] Plasma treated nanoscale ferrite 1%

[0054] Titanium Dioxide Based 8401 Paint White FTW 6%

[0055]Silicone softener CGF 0.5%

[0056] AM-C dispersant 0.5%

[0057] water 40%

[0058] Coating process conditions: single-sided coating, curing temperature 150 ° C, curing time 3 minutes.

Embodiment 3

[0059] Embodiment 3: Squeegee coating

[0060] Base material: 260T polyester woven fabric.

[0061] Equipment: Conventional blade coater.

[0062] Technological process: After the polyester woven fabric is coated with the mixed slurry of the absorbing material, it is pre-baked by infrared rays and then cured.

[0063] Coating paste formula:

[0064] PP-S acrylic paste with a solid content of 40% 50%

[0065] Charcoal powder 3%

[0066] Ferrite 5%

[0067] Plasma-treated nanoscale ferrite 0.5%

[0068] Titanium Dioxide Based 8401 Paint White FTW 3%

[0069] Silicone softener CGF 0.5%

[0070] AM-C dispersant 0.5%

[0071] Ammonia to adjust the pH of the slurry to 8

[0072] Water 37.5%

[0073] Coating process conditions: single-sided coating, curing temperature 150 ° C, curing time 3 minutes.

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PUM

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Abstract

The invention discloses a production method for a high-efficiency electromagnetic wave shielding fabric in the production of textile industries, comprises the working procedures of vacuum sputtering metallic film plating, chemical metallic film plating and protective layer applying of a fabric substrate, and is characterized in that an applied protective layer takes mixed wave absorbing materials, which comprises acrylic ester paste, carbon powder, ferrite, nano ferrite, titanium dioxide, an organic silicone softening agent and an dispersing agent, the mixed wave absorbing materials are applied onto the surface of a fabric that passes through the vacuum sputtering metallic film plating and the chemical metallic film plating through the ways of extrusion coating with a serum roller, blade coating with a knife or printing coating with a circular screen, and are solidified at high temperature. The invention has the advantages that the high-efficiency electromagnetic wave shielding fabric produced achieves the superimposed effect of electromagnetic wave reflecting and absorbing and plasma activating, improves the electromagnetic wave shielding performance further to be larger than 90 dB, simultaneously raises the combining fastness between a plated film and the fabric substrate, and improves the folding resistance of the product and the oxidative stain property of the metallic film.

Description

technical field [0001] The invention relates to a manufacturing method of a high-efficiency electromagnetic wave shielding fabric in textile industry production. The product can be widely used in household, military industry, scientific research, industry, agriculture, medicine and other industrial fields for shielding and protection against harmful electromagnetic waves. Background technique [0002] Electromagnetic wave is another major pollution source after air pollution, water pollution and noise pollution. Electromagnetic waves not only endanger human health, but also endanger the operation of equipment. In the military and communication fields, the leakage of electromagnetic waves can also cause leaks. Electromagnetic wave shielding fabrics are often used to make military shielding tents, cover cloths and military targets such as fake ships, target flags, and target umbrellas for military training. Therefore, the research and development of high-efficiency electromag...

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): D06N7/00D06N3/12D06M10/00D06M11/83B05D3/02H05K9/00
Inventor 周菊先商思善卢可盛
Owner SHANGHAI WEAVING SCIENCE RESEARCH INSTITUTE CO LTD
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