Electro-magnetic shielding material of tin-nickel alloy and preparing method thereof

An electromagnetic shielding material, tin-nickel alloy technology, applied in the direction of magnetic/electric field shielding, electrical components, fiber types, etc., can solve the problems restricting the application of textiles, etc., and achieve good electromagnetic shielding properties, good decorative effects, and excellent electrical conductivity.

Active Publication Date: 2011-06-08
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although electroless copper plating and nickel plating can reduce the surface resistance value of the fabric and improve the electromagnetic shielding performance of the fabric, metal nickel is sensitizing to the skin of some people and must be made into an interlayer before it can be used, which seriously restricts this type of fabric. Application of Textiles in Civil Protection

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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  • Electro-magnetic shielding material of tin-nickel alloy and preparing method thereof
  • Electro-magnetic shielding material of tin-nickel alloy and preparing method thereof
  • Electro-magnetic shielding material of tin-nickel alloy and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this embodiment, the copper-plated nylon cloth produced by Sanyuan Electronic Technology Co., Ltd. is used as the substrate, and the steps are as follows: the first step is pretreatment. Use 3moL / L chromic acid solution to degrade to remove oxides and dirt on the surface of fabric fibers after electroless copper plating;

[0035] The second step is to wash with water. Wash off the residual acid and heavy metal ions on the fabric with water;

[0036] The third step is electroplating. Using nickel anode, the following formula is used to prepare tin-nickel electroplating solution:

[0037] Potassium pyrophosphate K 4 P 2 o 7 ·3H 2 O 150g / L

[0038] Nickel Sulfate NiSO 4 ·6H 2 O 30g / L

[0039] Stannous Chloride SnCl 2 2H 2 O 7.5g / L

[0040] Ammonium chloride NH 4 Cl 10g / L

[0041] Glycine C 2 h 5 NO 2 10g / L

[0042] pH 8~9

[0043] Temperature 25~30℃

[0044] Cathode current 0.67~1A / dm 2

[0045] Plating time 480s

[0046] Through the abov...

Embodiment 2

[0050] In this example, the copper-plated nylon cloth produced by Sanyuan Electronic Technology Co., Ltd. is used as the base material, and the steps are as follows:

[0051] The first step is preprocessing. Use 3moL / L chromic acid solution to degrade to remove oxides and dirt on the surface of fabric fibers after electroless copper plating;

[0052] The second step is to wash with water. Wash off the residual acid and heavy metal ions on the fabric with water;

[0053] The third step is electroplating. Using nickel anode, the following formula is used to prepare tin-nickel electroplating solution:

[0054] Potassium pyrophosphate K 4 P 2 o 7 ·3H 2 O 150g / L

[0055] Nickel Sulfate NiSO 4 ·6H 2 O 30g / L

[0056] Stannous Chloride SnCl 2 2H 2 O 7.5g / L

[0057] Ammonium chloride NH 4 Cl 10g / L

[0058] L-cysteine ​​C 3 h 7 NO 2 S 5g / L

[0059] pH 8~9

[0060] Temperature 25~30℃

[0061] Cathode current 0.67~1A / dm 2

[0062] Plating time 480s

[0063] Throug...

Embodiment 3

[0067] In this example, the copper-plated mesh cloth MF36 produced by Sanyuan Electronic Technology Co., Ltd. is used as the base material, and the steps are as follows:

[0068] The first step is preprocessing. Use 3moL / L chromic acid solution to degrade to remove oxides and dirt on the surface of fabric fibers after electroless copper plating;

[0069] The second step is to wash with water. Wash off the residual acid and heavy metal ions on the fabric with water;

[0070] The third step is electroplating. Using nickel anode, the following formula is used to prepare tin-nickel electroplating solution:

[0071] Potassium pyrophosphate K 4 P 2 o 7 ·3H 2 O 150g / L

[0072] Nickel Sulfate NiSO 4 ·6H 2 O 30g / L

[0073] Stannous Chloride SnCl 2 2H 2 O 7.5g / L

[0074] Ammonium chloride NH 4 Cl 10g / L

[0075] Glycine C 2 h 5 NO 2 5g / L

[0076] pH 8~9

[0077] Temperature 25~30℃

[0078] Cathode current 0.67~1A / dm 2

[0079] Plating time 480s

[0080]...

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Abstract

The invention relates to a tin-nickel alloy electromagnetic shielding material and a preparation method thereof. The components of the tin-nickel alloy electromagnetic shielding material comprise the fiber fabric of a metallic coating and a surface tin-nickel alloy which is electrodeposited on the surface of the fiber fabric of the metallic coating; the preparation method includes that (1) the fiber fabric of the chemical metallic coating is soaked with chromic acid solution and flushed with clear water; (2) a complexing agent, nickel vitriol, stannous chloride and an additive are prepared toobtain tin-nickel plating solution and the pH of the solution is adjusted. A nickel anode is adopted and the fiber fabric plated with electroless copper or nickel phosphide is immersed and electroplated till the completion of a replacement reaction to obtain the electromagnetic shielding material covered with the tin-nickel alloy; (3) the electroplated fabric is washed with water and coated with a water-base resin of low concentration, and then thermally dried by a heat-setting machine to obtain the tin-nickel alloy electromagnetic shielding material. The material of the invention has excellent shielding performance and decay resistance, and can be widely applied to antistatic clothing, electromagnetic radiation protective clothing, the wall cloth and the window curtains of a secret room and the cable shielding.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding materials and preparation thereof, in particular to a tin-nickel alloy electromagnetic shielding material and a preparation method thereof. Background technique [0002] With the development of modern technology and the continuous improvement of people's living standards, high-tech electrical products are becoming more and more popular. While mobile phones, computers, and televisions bring convenience and enjoyment to people, problems caused by electromagnetic radiation are also increasingly serious. In order to reduce and avoid the harm caused by electromagnetic radiation to the human body, the demand for electromagnetic shielding fabrics will increase, and it is developing rapidly in the direction of meeting market demand. [0003] Compared with electromagnetic shielding materials such as film sheets, flexible electromagnetic shielding materials (conductive cloth) are closer to people's...

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): C25D3/56C25D5/54D06N3/14D06M101/32H05K9/00D06M11/83
Inventor 王炜楚克静孙宾朱美芳田海玉
Owner DONGHUA UNIV
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