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Preparation method of high-performance nickel-plated carbon fibers

A nickel-plated carbon fiber, high-performance technology, applied in the direction of carbon fiber, fiber treatment, liquid chemical plating, etc., can solve the problems of less polar groups on the surface, low surface energy, affecting the mechanical properties of composite materials, etc., and achieve good stability , good combination effect

Inactive Publication Date: 2017-06-06
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the content of polar groups on the surface of untreated carbon fiber is less, the surface energy is low, the reactivity is low, the adhesion with the matrix is ​​poor, and there are many defects in the interface, which directly affects the mechanical properties of the composite material and limits the carbon fiber. high performance

Method used

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  • Preparation method of high-performance nickel-plated carbon fibers

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Effect test

Embodiment 1

[0031] A preparation method of high-performance surface nickel-plated carbon fiber, comprising the following steps:

[0032] (1) Burn the carbon fiber at a high temperature of 350°C for 10 minutes, then place it in a 10% sodium hydroxide solution, ultrasonicate it for 20 minutes at a power of 100W, then take it out and wash it with deionized water until it is neutral, and dry it at 80-90°C. stand-by;

[0033] (2) Soak the carbon fiber obtained in step (1) in concentrated nitric acid, seal it, and treat it in a water bath at 80°C at a speed of 800 rpm for 10 minutes, take it out, wash it with deionized water until it is neutral, and then dry it to obtain crude melted carbon fiber;

[0034] (3) Mix and stir palladium chloride, ammonium chloride and deionized water evenly, then add sodium thiocyanate to the solution, 300W power ultrasonic 10min, and make the activation solution; wherein, the concentration of each component is: palladium chloride 0.1g / L, ammonium chloride 0.1g / L...

Embodiment 2

[0040] A preparation method of high-performance surface nickel-plated carbon fiber, comprising the following steps:

[0041] (1) Burn the carbon fiber at a high temperature of 550°C for 30 minutes, then place it in a 10% sodium hydroxide solution, ultrasonicate it for 50 minutes at a power of 400W, then take it out and wash it with deionized water until it is neutral, and dry it at 80-90°C. stand-by;

[0042] (2) Soak the carbon fiber obtained in step (1) in concentrated nitric acid, seal it, and treat it in a water bath at 100°C at a speed of 1500 rpm for 40 minutes, take it out, wash it with deionized water until it is neutral, and then dry it to obtain crude melted carbon fiber;

[0043] (3) Mix and stir palladium chloride, ammonium chloride and deionized water evenly, then add sodium thiocyanate to the solution, 300W power ultrasonic 30min, and make the activation solution; wherein, the concentration of each component is: palladium chloride 0.5g / L, ammonium chloride 0.3g...

Embodiment 3

[0049] A preparation method of high-performance surface nickel-plated carbon fiber, comprising the following steps:

[0050] (1) Burn the carbon fiber at a high temperature of 400°C for 15 minutes, then place it in a 10% sodium hydroxide solution, ultrasonicate it for 30 minutes at a power of 200W, then take it out and wash it with deionized water until it is neutral, and dry it at 80-90°C. stand-by;

[0051] (2) Soak the carbon fiber obtained in step (1) in concentrated nitric acid, seal it, and treat it in a water bath at 85°C at a speed of 900 rpm for 20 minutes, take it out, wash it with deionized water until it is neutral, and then dry it to obtain crude melted carbon fiber;

[0052] (3) Mix and stir palladium chloride, ammonium chloride and deionized water evenly, then add sodium thiocyanate to the solution, 300W power ultrasonic 15min, and make the activation solution; wherein, the concentration of each component is: palladium chloride 0.2g / L, ammonium chloride 0.15g / ...

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Abstract

The invention discloses a preparation method of high-performance nickel-plated carbon fibers. The method comprises the following steps: carrying out high-temperature calcination on carbon fibers to remove the surface gum, and carrying out neutralizing treatment; soaking the treated carbon fibers in concentrated nitric acid to perform coarsening treatment; soaking the coarsened carbon fibers in an activation solution composed of palladium chloride, ammonium chloride, sodium thiocyanate and deionized water to perform activating treatment; uniformly mixing nickel sulfate, sodium hypophosphite, ammonium acetate, thiocarbamide, citric acid, tartaric acid, ammonia water and deionized water to prepare a chemical plating solution, and carrying out nickel plating treatment on the activated carbon fiber surface; and collecting the waste liquid in the chemical plating process, and treating the waste liquid to recover nickel. The nickel-plated carbon fibers prepared by the method have the advantages of favorable electric conductivity, excellent mechanical properties, favorable corrosion resistance, favorable binding power between the coating and carbon fiber surface, and no environment pollution.

Description

[0001] Technical field: [0002] The invention relates to the field of carbon fiber surface modification, in particular to a preparation method of high-performance surface nickel-plated carbon fiber. [0003] Background technique: [0004] Carbon fiber is prepared by high-temperature pyrolysis. Its special shape and structure have a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, electrical conductivity, heat transfer and small thermal expansion coefficient. However, the content of polar groups on the surface of untreated carbon fiber is less, the surface energy is low, the reactivity is low, the adhesion with the matrix is ​​poor, and there are many defects in the interface, which directly affects the mechanical properties of the composite material and limits the carbon fiber. High performance play. In order to improve the interface performance, the surface modification of carbon fiber ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83C23C18/36C23C18/18C22B7/00C22B23/00C22B3/40D06M101/40
CPCC22B7/006C22B23/0453C23C18/1639C23C18/1893C23C18/36C22B3/409D06M11/83D06M2101/40Y02P10/20
Inventor 王海燕
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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