Method for surface modification by carbon fiber chemical nickel-plating

A technology of surface modification and electroless nickel plating, which is applied in the direction of carbon fiber, liquid chemical plating, fiber treatment, etc., can solve the problems of low reactivity, low surface energy of carbon fiber, poor matrix adhesion and wettability, etc., and achieve good microscopic Structure, the effect of increasing the binding force

Inactive Publication Date: 2020-12-29
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the surface energy of carbon fibers is low, the content of active functional groups is small, and the reactivity is low, resulting in poor adhesion and wettability with the matrix, which greatly limits the performance of carbon fibers.

Method used

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  • Method for surface modification by carbon fiber chemical nickel-plating

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Comparison scheme
Effect test

Embodiment 1

[0014] Carbon fiber is carried out the method for surface modification then electroless nickel plating, comprises the following steps:

[0015] (1) Degumming, put the carbon fiber in a muffle furnace for high-temperature burning at 300°C for 30min.

[0016] (2) Coarse, soak the carbon fiber after degumming in step (1) in a mixed solution of hydrofluoric acid and concentrated phosphoric acid with a volume fraction of 10% for 30 minutes, then take it out, wash it with deionized water until neutral, and dry it for use .

[0017] (3) sensitization, the carbon fiber after step (2) roughening is soaked in the SnCl that mass concentration is 5% 2 In the solution for 15min, then take it out and wash it with deionized water until neutral, and dry it for use.

[0018] (4) Activation, palladium chloride, ammonium chloride, sodium hypophosphite were mixed and stirred for 10min to prepare an activation solution, the concentration of palladium chloride was 0.5g / L, the concentration of amm...

Embodiment 2

[0021] Carbon fiber is carried out the method for surface modification then electroless nickel plating, comprises the following steps:

[0022] (1) Degumming, put the carbon fiber in a muffle furnace for high-temperature burning at 400°C for 20min.

[0023] (2) Coarse, soak the carbon fiber after degumming in step (1) in a mixed solution of hydrofluoric acid and concentrated phosphoric acid with a volume fraction of 15% for 20 minutes, then take it out, wash it with deionized water until neutral, and dry it for use .

[0024] (3) Sensitization, immerse the roughened carbon fiber in step (2) in a SnCl2 solution with a mass concentration of 10% for 20 minutes, then take it out and wash it with deionized water until it is neutral, and dry it for use.

[0025] (4) activation, palladium chloride, ammonium chloride, sodium hypophosphite were mixed and stirred for 10min to prepare activation solution, the concentration of palladium chloride was 1g / L, the concentration of ammonium ch...

Embodiment 3

[0028] Carbon fiber is carried out the method for surface modification then electroless nickel plating, comprises the following steps:

[0029] (1) Degumming, put the carbon fiber in a muffle furnace for high-temperature burning at 500°C for 10 minutes.

[0030] (2) Coarse, soak the carbon fiber after degumming in step (1) in a mixed solution of hydrofluoric acid and concentrated phosphoric acid with a volume fraction of 20% for 10 minutes, then take it out, wash it with deionized water until neutral, and dry it for use .

[0031] (3) Sensitization, immerse the roughened carbon fiber in step (2) in a SnCl2 solution with a mass concentration of 15% for 30 minutes, then take it out and wash it with deionized water until neutral, and dry it for use.

[0032] (4) Activation, palladium chloride, ammonium chloride, sodium hypophosphite were mixed and stirred for 10min to prepare an activation solution, the concentration of palladium chloride was 1.5g / L, the concentration of ammoniu...

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Abstract

The invention belongs to the technical field of fiber material surface modification, and particularly relates to a method for surface modification by carbon fiber chemical nickel-plating. The method comprises the following steps: degumming, coarsening, sensitizing and activating. Firstly, glue on the surfaces of carbon fibers is removed through high-temperature firing, then the treated carbon fibers are soaked in a mixed solution of hydrofluoric acid and concentrated phosphoric acid, the microstructure of the surfaces of the carbon fibers is changed, the binding force between metal plating layers is increased, and then the coarsened carbon fibers are soaked in SnCl2, so that a layer of substance having good reducibility is attached to the surfaces of the carbon fibers; and firstly, the sensitized carbon fibers are soaked in an activating solution consisting of palladium chloride, ammonium chloride and sodium hypophosphite to form a layer of noble metal elementary substance on the carbon fibers, and finally, nickel plating treatment is performed on the activated carbon fibers, so that the modified carbon fibers have good wettability, and a nickel plating layer can be more uniform, compact and high in adhesive force.

Description

technical field [0001] The invention belongs to the technical field of surface modification of fiber materials, and in particular relates to a method for surface modification of carbon fiber electroless nickel plating. Background technique [0002] Carbon fiber is a fiber with a carbon content higher than 95% prepared by high-temperature pyrolysis of polyacrylonitrile-based carbon fiber, viscose-based carbon fiber, pitch-based carbon fiber and other organic fibers. It not only has the intrinsic characteristics of carbon materials, but also has the properties of fibers. machinability. Carbon fiber has a series of excellent properties such as high specific modulus, high specific strength, high temperature resistance, radiation resistance, low density, electrical conductivity, and small thermal expansion coefficient, and has broad application prospects in many fields. [0003] However, the surface energy of carbon fibers is low, the content of active functional groups is small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M11/13D06M11/70D06M11/22C23C18/18C23C18/36D06M101/40
CPCD06M11/83D06M11/13D06M11/70D06M11/22C23C18/1893C23C18/36D06M2101/40
Inventor 刘俊成王洛书张艳温王小亮
Owner TIANJIN POLYTECHNIC UNIV
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