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Electromagnetic shield textiles and its preparing method

An electromagnetic shielding and textile technology, applied in the field of electromagnetic shielding textiles and its preparation, can solve the problems of high cost, softness, insufficient air permeability, strong elongation, etc.

Inactive Publication Date: 2006-08-16
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there have been reports of electroless copper-nickel alloy plating on the metal surface, combined with the unique structure and characteristics of the textile surface, it is required that the coating has good wear resistance and maintains the original style of the textile as much as possible, such as softness, Insufficient air permeability, strong elongation, etc., high cost

Method used

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  • Electromagnetic shield textiles and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this example, nylon 66 textile "RIPSTOP" is used as the base material, and the preparation steps are as follows:

[0039] The first step, pretreatment, desizing and refining with sodium hydroxide solution to clean the surface of the substrate fiber and remove the dirt on the fiber surface;

[0040] The second step, sensitization and activation, is treated with palladium chloride activation solution to form an extremely thin metal catalytic layer on the surface of the fiber, and then dried by a heat setting machine MONFORTS 328;

[0041] The third step is strengthening, soaking with 40% formaldehyde solution to strengthen the surface structure of the fiber;

[0042] The fourth step, electroless copper plating process

[0043] Plating solution formula

[0044] Copper Sulfate CuSO 4 ·5H 2 O 15g / L

[0045] Sodium Potassium Tartrate NaKC 4 h 4 o 6 4H 2 O 14g / L

[0046] EDTA tetrasodium salt 25g / L

[0047] Alkaline agent such as NaOH 25g / L

[0048] Formaldehyde...

Embodiment 2

[0073] In this embodiment, polyester taffeta is used as the base material, and the preparation steps are as follows:

[0074] Other preparation steps remain unchanged, and the plating solution formula of the fourth step electroless copper plating process is changed as follows accordingly:

[0075] Copper Sulfate CuSO 4 ·5H 2 O 16g / L

[0076] Sodium Potassium Tartrate NaKC 4 h 4 o 6 4H 2 O 15g / L

[0077] EDTA tetrasodium salt 25g / L

[0078] Alkaline agent such as NaOH 20g / L

[0079] Formaldehyde HCHO (concentration 37-40%) 20g / L

[0080] Nickel chloride NiCl 2 ·6H 2 O 1g / L

[0081] α,α'-bipyridine 20mg / L

[0082] Potassium cyanide 8mg / L

[0083] Penetrant JFC 2g / L

[0084] pH value 12~13

[0085] Temperature 47°C

[0086] The plating solution of the above formula is prepared separately by two groups of A and B, mixed before use, and finally added with a stabilizer to adjust the pH value.

[0087] Group A includes copper sulfate and formaldehyde, dissolves a gi...

Embodiment 3

[0105] In this embodiment, polyester taffeta is used as the base material, and the preparation steps are as follows:

[0106] Other preparation steps remain unchanged, and the plating solution formula of the fourth step electroless copper plating process is changed as follows accordingly:

[0107] Copper Sulfate CuSO 4 ·5H 2 O 16g / L

[0108] Sodium Potassium Tartrate NaKC 4 h 4 o 6 4H 2 O 15g / L

[0109] EDTA tetrasodium salt 25g / L

[0110] Alkaline agent such as NaOH 20g / L

[0111] Formaldehyde HCHO (concentration 37-40%) 20g / L

[0112] Nickel chloride NiCl 2 ·6H 2 O 1g / L

[0113] α,α'-bipyridine 20mg / L

[0114] Potassium cyanide KCN 8mg / L

[0115] Potassium thiocyanate (KSCN) 12mg / L

[0116]Penetrant JFC 2g / L

[0117] pH value 12~13

[0118] Temperature 47°C

[0119] The plating solution of the above formula is prepared separately by two groups of A and B, mixed before use, and finally added with a stabilizer to adjust the pH value.

[0120] Group A include...

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Abstract

The present invention provides electromagnetic shield textile prepared via covering non-metal fiber fabric with conducting metal layer to produce shield effect and its preparation process. On base fiber surface, metal copper and nickel are plated to constitute composite conducting metal film. The base fiber is first plated with copper chemically and then plated with nickel electrically to form the composite conducting metal film on the surface and make electromagnetic shield fabric. The base fiber is nylon, dacron or nitrilon.

Description

technical field [0001] The invention provides an electromagnetic shielding textile which can produce a shielding effect by covering the fiber surface of the non-metallic fiber textile with a metal conductive layer and a preparation method thereof. Background technique [0002] With the rapid development and increasing popularity of telecommunications, computers, microwave ovens, etc., the energy density of electromagnetic radiation in the environment is increasing year by year. Electromagnetic environmental pollution has become the fourth largest pollution after air, water quality and noise, and it has attracted more and more attention. Metallized textile is a good electromagnetic shielding material, which combines the conductive and electromagnetic shielding properties of metal with the soft and breathable properties of textiles. The nickel-copper metallized cloth produced by this technology is used for conductive pads. The conductive pads have good shielding properties an...

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): D06M11/83H05K9/00
Inventor 王炜李成新潘仁昌
Owner DONGHUA UNIV
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