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Machining method for electromagnetic shielding woven fabric with core-shell alloy structure

A technology of electromagnetic shielding and processing methods, which is applied in the processing of electromagnetic shielding woven fabrics, the processing of electromagnetic shielding plain cotton fabrics, and the preparation of core-shell copper-silver alloys. Low efficiency and other problems, to achieve the effect of broadening the shielding wavelength range, improving shielding effectiveness, and improving bonding fastness

Active Publication Date: 2015-07-01
YIXING ZHONGDA TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) The electroplating method, which uses the directional deposition of metal ions under the action of an electric current to form a coating on the surface of the fabric. This type of method requires more energy consumption and is not environmentally friendly (such as patent CN201410280545CN103866364A, etc.)
However, the surface layer of silver-plated fiber fabric is easy to oxidize and change color after being used for a period of time.
[0005] Moreover, in the current research in the field of electromagnetic shielding, there are generally the following two types of problems. One is that the wavelength distribution of shielded electromagnetic waves is narrow, it is difficult to adapt to the broadband shielding effect, and the shielding efficiency is low. This is mainly due to the processing of shielding fabrics. A single shielding material is added to the fabric body, making it difficult to improve the shielding effectiveness
Second, the surface of the electromagnetic shielding material is easy to oxidize, so the shielding effect is difficult to last, which is determined by the metal characteristics of the shielding material

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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  • Machining method for electromagnetic shielding woven fabric with core-shell alloy structure
  • Machining method for electromagnetic shielding woven fabric with core-shell alloy structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Put the plain cotton fabric with 60 warp yarns and 60 weft yarns into the plasma deposition device, the target position is empty, vacuumize to 0.0001Pa, add the reaction gas as argon, and the plasma power is 20W, and clean for 10 minutes; then The pretreated plain cotton fabric is put into the plasma deposition chamber, evacuated to 0.00005Pa, filled with oxygen, and the reaction pressure is controlled to 0.1Pa. Copper and copper oxide are used as targets, and the radio frequency plasma power is 200W. Cuprous oxide particles of 552nm; re-evacuated, filled with 0.5Pa of helium, copper target power 16W, silver target reaction power 160W, copper target reaction temperature 100°C, silver target reaction temperature 250°C, co-deposition 15 Minutes, then the copper target is plasma deposited for 30 minutes alone, the power is 100W; the target is changed to copper oxide, the vacuum is evacuated to 0.00001Pa, and the sputtering time is 30 minutes, the obtained fabric Such as ...

Embodiment 2

[0023] Put the plain cotton fabric with 60 warp yarns and 50 weft yarns into the plasma deposition device, the target position is empty, vacuumize to 0.00001Pa, add the reaction gas as argon, and the plasma power is 20W, and clean for 10 minutes; then The pretreated plain cotton fabric is put into the plasma deposition chamber, evacuated to 0.00005Pa, filled with oxygen, and the reaction pressure is controlled to 0.1Pa. Copper and copper oxide are used as targets, and the radio frequency plasma power is 200W. Cuprous oxide particles of 552nm; re-evacuated, filled with 0.5Pa helium, copper target power 16W, silver target reaction power 180W, copper target reaction temperature 100°C, silver target reaction temperature 250°C, co-deposition 15 Minutes, then the copper target is plasma deposited for 30 minutes alone, the power is 100W; the target is changed to copper oxide, the vacuum is evacuated to 0.00001Pa, and the sputtering time is 30 minutes, the obtained fabric Such as fi...

Embodiment 3

[0025] Put the plain cotton fabric with 40 warp yarns and 40 weft yarns into the plasma deposition device, the target position is empty, vacuumize to 0.00005Pa, add the reaction gas as argon, and the plasma power is 20W, and clean for 10 minutes; then The pretreated plain cotton fabric is put into the plasma deposition chamber, evacuated to 0.00001Pa, filled with oxygen, and the reaction pressure is controlled to 0.1Pa. Copper and copper oxide are used as targets, and the radio frequency plasma power is 200W. Cuprous oxide particles of 573nm; re-evacuated, filled with 0.5Pa helium, copper target power 20W, silver target reaction power 200W, copper target reaction temperature 100°C, silver target reaction temperature 250°C, co-deposition 15 Minutes, then the copper target is plasma deposited for 30 minutes alone, the power is 100W; the target is changed to copper oxide, the vacuum is evacuated to 0.00001Pa, and the sputtering time is 30 minutes, the obtained fabric Such as fi...

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 provides a machining method for an electromagnetic shielding woven fabric with a core-shell alloy structure and relates to the technical fields of pre-treating cotton plain weave fabrics by using a plasma technology, carrying out double-metal core-shell alloy deposition on the surface of the fabric by adopting a plasma deposition technology, and preventing an alloy from oxidization by copper oxide and cuprous oxide and the like. According to the machining method, copper and the copper oxide react with oxygen at high temperature, and the binding strength of a metal layer and the fabric is improved by depositing cuprous oxide particles on the surface of the cotton fabric; under certain temperature, a silver-copper core-shell alloy structure is formed in helium gas by using a copper target and a silver target so that the shielding performance of the fabric is improved; and the cuprous oxide particles are formed on the surface of the alloy so that the alloy layer is prevented from being oxidized. By virtue of the machining method, the disadvantages that a conventional electromagnetic shielding frequency spectrum is relatively narrow and the shielding efficiency is low are overcome and the electromagnetic shielding performance of the cotton plain weave fabrics is improved. The electromagnetic shielding cotton fabric prepared by the machining method can be widely applied to the fields of anti-radiation clothes, high-electromagnetic-field protection and the like.

Description

technical field [0001] The invention relates to a processing method of an electromagnetic shielding woven fabric using a core-shell alloy structure, in particular to the technical fields of processing of electromagnetic shielding plain cotton fabric, preparation of core-shell copper-silver alloy, anti-oxidation of the alloy, and the like. [0002] Electromagnetic wave radiation has become another major public hazard after noise pollution, air pollution, water pollution, and solid waste pollution. Electromagnetic interference (EMI) generated by electromagnetic wave radiation will not only affect the normal operation of various electronic devices, but also be harmful to human health. Electromagnetic shielding woven fabrics have good electrical conductivity, and can maintain the characteristics of fabric materials such as breathability, flexibility, foldability, and bonding. They can be made into shielding clothing, shielding tents, and shielding room materials to ensure personal...

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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IPC IPC(8): D06M11/42D06M11/83C23C14/08C23C14/14C23C14/34D06M101/06
Inventor 黄锋林彭斌李双双刘文婷魏取福
Owner YIXING ZHONGDA TEXTILE
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