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Preparation method of electromagnetic shielding textile

An electromagnetic shielding and fabric technology, applied in the field of shielding fabric preparation, can solve the problems of poor shielding efficiency of electromagnetic shielding fabrics, high price of palladium as the activation center, environmental pollution of chemical plating process, etc., to improve shielding efficiency and increase binding force , Improve the effect of binding force

Active Publication Date: 2013-04-24
SHENZHEN SELEN SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the serious environmental pollution of the electroless plating process in the prior art, the expensive price of palladium as the activation center, and the difficulty in degumming, while the electromagnetic shielding fabric prepared by other processes has poor shielding efficiency and is easy to fall off, etc., the present invention provides a stable process, Preparation method of electromagnetic shielding fabric with low environmental pollution, cheap process and high shielding efficiency

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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  • Preparation method of electromagnetic shielding textile
  • Preparation method of electromagnetic shielding textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Use plain weave 260T polyester fabric as the substrate, the thickness is about 90 microns, and the surface density is about 56g / m 2 . A conductive polyester fabric with good shielding performance can be prepared according to the following conditions:

[0056] Cleaning: Wet the fabric with clean water first, and wash it again.

[0057] (1) Degreasing and coarsening: put the fabric into an aqueous sodium hydroxide solution for coarsening and degreasing, the concentration of NaOH in the solution is 40g / L, and the concentration of spandex refining agent CPA-2 is 1ml / L; the temperature is controlled at 80 ℃, take it out after 40 minutes of treatment, and rinse with clean water.

[0058] (2) Hydrogen plasma metallization silver plating: Dried polyester fabric after degreasing and roughening is dipped into a mixture of silver nitrate --- polyvinyl alcohol complex (complexing solution is silver nitrate and polyvinyl alcohol complex PVA complex configuration, in which AgNO 3...

Embodiment 2

[0067] Use plain weave 290T polyester fabric as the base material, the fabric material is 100% polyester, the thickness is about 100 microns, and the surface density is about 65g / m 2 . A conductive polyester fabric with good shielding performance can be prepared according to the following conditions:

[0068] Cleaning: Wet the fabric with clean water first, and wash it again.

[0069] (1) Degreasing and coarsening: the fabric is put into an aqueous sodium hydroxide solution for coarsening and degreasing, the concentration of NaOH in the solution is 50g / L, and the concentration of spandex refining agent CPA-2 is 3ml / L; the temperature is controlled at 90 ℃, take it out after 30 minutes, rinse it with clean water, and the weight loss rate reaches 8.4%.

[0070] (2) Hydrogen plasma metallization silver-plating: Dried polyester fabric after degreasing and roughening is impregnated with silver nitrate --- polyvinyl alcohol complex mixture (the complex solution is silver nitrate a...

Embodiment 3

[0079] Use polyester square cloth as the base material, the weight is 56g / m 2 , the thickness is 0.5mm. Conductive non-woven fabrics with good shielding performance can be prepared according to the following conditions:

[0080] Cleaning: Wet the fabric with clean water first, and wash it again.

[0081] (1) Degreasing and coarsening: the fabric is put into an aqueous solution of sodium hydroxide for coarsening and degreasing treatment. The concentration of NaOH in the solution is NaOH45g / L, and the concentration of spandex refining agent CPA-2 is 2ml / L; the temperature is controlled at 80 ℃, take it out after 40 minutes, and rinse with clean water.

[0082] (2) Hydrogen plasma metallization silver-plating: Dried polyester fabric after degreasing and roughening is impregnated with silver nitrate --- polyvinyl alcohol complex mixture (the complex solution is silver nitrate and PVA complex configuration Formed, where AgNO 3 250g / L for PVA, 250g / L for PVA), then dry the fabri...

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Abstract

The invention provides a preparation method of an electromagnetic shielding textile. The preparation method comprises the following steps: textile pre-treatment: (1) putting the textile into a sodium hydroxide water solution and carrying out coarsening and oil removing treatment at 80-100 DEG C; (2) carrying out hydrogen plasma metal silver plating: padding the textile which is subjected to the coarsening and oil removing treatment in the step (1) into a silver nitrate complexing mixing solution and drying or airing; then utilizing a hydrogen plasma to replace silver nitrate padded on the textile with a silver monomer metal layer; (3) carrying out chemical copper plating: putting the textile obtained in the step (1) into a chemical copper plating solution to carry out the chemical copper plating; and (4) carrying out chemical nickel plating or electrical nickel plating: putting the textile treated in the step (3) into a nickel plating solution to carry out nickel plating. The method disclosed by the invention has the advantages of good process stability, small environmental pollution and cheap process; and the electromagnetic shielding rate of the prepared electromagnetic shielding textile is high and can reach more than 75 DB, the bonding force between a shielding layer and the metal layer is strong and the shielding layer and the metal layer are not easy to fall off.

Description

technical field [0001] The invention relates to a preparation method of a shielding fabric, in particular to a preparation method of a fabric with an electromagnetic shielding function. Background technique [0002] The electromagnetic pollution caused by the wide application of various electrical and electronic equipment has been recognized as the fourth largest public hazard after air pollution, water pollution and noise pollution. The electromagnetic interference (EMI) and electromagnetic compatibility (EMC) problems caused by electromagnetic waves will not only interfere with electrical equipment, but also pose a serious threat to human health. Previously, information security problems have occurred due to electromagnetic wave leakage, which directly threatens the country's Political, economic and military security. Therefore, how to reduce the intensity of electromagnetic radiation, prevent electromagnetic radiation pollution, protect the environment, and protect human...

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): D06M11/83D06M11/38C23C18/44C23C18/40C23C18/36C25D3/12
Inventor 侯毅张强管映亭艮文娟
Owner SHENZHEN SELEN SCI & TECH CO LTD
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