Continuous metal electroplating method and device for carbon fiber tows

A technology of carbon fiber tow and electroplating metal, which is applied in the field of electroplating metal, which can solve the problems of difficulty in obtaining metal film, low production efficiency, slow electroplating speed, etc., and achieve the effects of avoiding bridging between filaments, high production efficiency, and avoiding excessive heating

Active Publication Date: 2015-09-23
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main problems of the traditional carbon fiber electroplating process are the low plating rate and low production efficiency
This is because the specific resistance of carbon fiber is much greater than that of ordinary metals (the specific resistance of carbon fiber is usually 10 -3 -10 -4 Ω·cm, and the specific resistance of most metals is 10 -6 Ω·cm), so the conductivity is poor and the current density is small, resulting in slow plating speed
However, once the current density is increased, the carbon fiber tow will heat up significantly, resulting in the formation of a metal film bridging each other on the surface of the carbon fiber tow, which will make it difficult to electroplate the internal fibers of the carbon fiber tow, and it is difficult to obtain the surface and internal thickness of the carbon fiber tow uniform metal film
Therefore, in order to obtain a metal film with a uniform thickness, a relatively small current density is used, and low production efficiency is the main problem at present.

Method used

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  • Continuous metal electroplating method and device for carbon fiber tows
  • Continuous metal electroplating method and device for carbon fiber tows
  • Continuous metal electroplating method and device for carbon fiber tows

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Adopt the first kind of carbon fiber tow electroplating device, it comprises transmission guide roller group, electroplating tank 3, electroplating tank guide roller 4, anode metal plate 5, conductive guide roller 6, it is characterized in that electroplating tank 3 is 3, in There is a transmission guide roller group above the input end of one electroplating tank 3, and there are transmission guide rollers 2 distributed in a staggered manner in the transmission guide roller group, and an anode metal plate 5 is distributed at the bottom of each electroplating tank 3, and each anode metal plate 5 There are electroplating tank guide rollers 4 above both ends, conductive guide rollers 6 above the electroplating tanks 3, and a conductive guide roller 6 above the output end of the last electroplating tank 3. After the conductive guide rollers 6 There is a transmission guide roller set.

[0049] The conductive guide roller 6 is a graphite guide roller. The anode metal plate 5...

Embodiment 2

[0053] Adopting the first carbon fiber tow electroplating device, there are five electroplating tanks 3, and the conductive guide roller 6 is a stainless steel guide roller. The anode metal plate 5 is a Ni plate.

[0054] Polyacrylonitrile (PAN)-based high-strength 6K carbon fiber 1 with a diameter of 7 μm was heat-treated in a desizing furnace at 550 ° C for 12 minutes, and the atmosphere was nitrogen; Clean the aqueous solution cleaning tank, and then enter the water washing tank to wash off the residual sodium lauryl sulfate on the surface of the carbon fiber with flowing deionized water, so that the content of sodium lauryl sulfate in the running water is about 0.23g / L; then enter the 5 Continuous nickel plating is carried out in a separate electroplating tank. The formula of the electroplating solution is: NiSO 4 ·6H 2 O 120g / L, NiCl 2 ·6H 2 O 30g / L, NaCl 10g / L, MgCl 2 10g / L,H 3 BO 3 40g / L, the pH value is controlled at 4.8-5.5, and the temperature is 20°C.

[00...

Embodiment 3

[0057] Using the first carbon fiber tow electroplating device, there are four electroplating tanks 3, and the conductive guide roller 6 is a copper guide roller. The anode metal plate 5 is a Ni plate.

[0058] The polyacrylonitrile-based 12K carbon fiber 1 with a diameter of about 7 μm was heat-treated in a desizing furnace at 650 ° C for 5 minutes, and the atmosphere was argon; next, the carbon fiber tow 1 was washed in an aqueous solution containing 1.0 g / L sodium lauryl sulfate tank for cleaning, and then enter the washing tank to wash off the residual sodium lauryl sulfate on the surface of the carbon fiber with flowing deionized water, and detect that the content of sodium lauryl sulfate in the washing water is 0.15g / L; then enter 4 independent Continuous nickel plating is carried out in the electroplating bath. The formula of the electroplating solution is: NiSO 4 ·6H 2 O 300g / L, NiCl 2 ·6H 2 O 10g / L, NaCl 30g / L, MgCl 2 5g / L,H 3 BO 3 15g / L, the pH value is contro...

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Abstract

The invention provides a continuous metal electroplating method for carbon fiber tows. According to the method, after cleaning treatment by a surfactant solution, a carbon fiber is used as a cathode and plated metal is used as an anode for electroplating, and then cleaning, drying and tow winding are carried out. The continuous metal electroplating method provided by the invention has the advantages of high safety, good deoxidation effect, less investment, high convenience in operation and low operating cost.

Description

[0001] Field [0002] The invention relates to a method and device for electroplating metal, in particular to a method and device for continuously electroplating metal on the surface of carbon fiber tow. Background technique [0003] With the rapid development of the modern electronic industry and the popularization of electronic and electrical equipment, the problem of electromagnetic radiation is becoming more and more serious. Electromagnetic wave radiation can interfere with surrounding electronic equipment, causing accidents and information leakage, posing a serious threat to information security such as computers and communications. In addition, electromagnetic radiation also has a serious impact on human health. [0004] Surface metallized carbon fiber has gradually become an important material for modern electronic radiation protection products and equipment. Surface metallized carbon fiber also has a wide range of uses in military, small and large capacity capacitor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D7/06C25D5/54C25D3/38C25D3/12C25D3/46
Inventor 吴刚平吕春祥吕晓轩
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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