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Carbon fiber surface chemical nickel plating method

A technology of surface chemistry and carbon fiber, applied in the direction of liquid chemical plating, coating, metal material coating process, etc., can solve the problem that Fe powder cannot be removed cleanly

Active Publication Date: 2017-08-18
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Fe powder cannot be removed by this method.

Method used

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  • Carbon fiber surface chemical nickel plating method
  • Carbon fiber surface chemical nickel plating method
  • Carbon fiber surface chemical nickel plating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The surface of the carbon fiber is electrolessly plated with nickel. First, the carbon fiber is pretreated:

[0045] (1) Degreasing treatment: burn the target carbon fiber at high temperature in a muffle furnace, burning temperature: 400℃, burning time 15min; after burning, soak in acetone solution for 10min and then take it out, in this process, ultrasonic Treat it so that the attachment can be better removed, and then rinse with deionized water to neutral.

[0046] (2) Coarsening treatment: Put the degreased carbon fiber into a coarsening solution of 98% concentrated nitric acid: 65% concentrated sulfuric acid=1:1, and ultrasonic treatment for 1h. After that, it is neutralized with NaOH and washed with deionized water to neutrality, which not only ensures the formation of gullies on the surface of the carbon fiber, but also does not weaken the strength of the carbon fiber.

[0047] (3) Sensitization treatment: sensitize the roughened carbon fiber with a sensitization soluti...

Embodiment 2

[0051] (1) Degreasing treatment: Burn 2g of carbon fiber in a muffle furnace at high temperature, burning temperature: 450℃, burning time 13min; after burning, soak in acetone solution for 6min and take it out, and ultrasonic Treat it so that the attachment can be better removed, and then rinse with deionized water to neutral.

[0052] (2) Roughening treatment: Put the degreased carbon fiber into a roughening solution of 86% concentrated nitric acid: 70% concentrated sulfuric acid=1:1, and ultrasonic treatment for 0.5h. After titration with 1% KOH solution to neutralize to PH=7, take out the carbon fiber and further rinse with deionized water.

[0053] (3) Sensitization treatment: sensitize the roughened carbon fiber with a sensitization solution. The sensitizing solution is 25g / L SnCl 2 , 10ml / L HCl, when preparing the sensitizing solution, first dissolve concentrated HCl in deionized water, and then add SnCl 2 The particles are dissolved in an aqueous solution of HCl, and magnet...

Embodiment 3

[0057] (1) Degreasing treatment: burn the target carbon fiber at high temperature in a muffle furnace, burning temperature: 500℃, burning time 10min; after burning, soak in acetone solution for 15min and then take it out, in this process, ultrasonic Treat it so that the attachment can be better removed, and then rinse with deionized water to neutral.

[0058] (2) Coarse treatment: Put the degreased carbon fiber into a coarsening solution of 98% concentrated nitric acid: 65% concentrated sulfuric acid=1:1, and ultrasonic treatment for 1.5h. Then neutralize with NaOH solution and rinse with deionized water to neutral.

[0059] (3) Sensitization treatment: sensitize the roughened carbon fiber with a sensitization solution. The sensitizing solution is 25g / L SnCl 2 , 10ml / L HCl, when preparing the sensitizing solution, first dissolve concentrated HCl in deionized water, and then add SnCl 2 The particles are dissolved in an aqueous solution of HCl. This can prevent SnCl 2 hydrolysis. ...

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Abstract

The invention provides a carbon fiber surface chemical nickel plating method. The method specifically comprises the steps that (1) pretreatment is conducted, and carbon fiber pretreatment is divided into degreasing treatment, roughing treatment, sensitization treatment and activation treatment; (2) plating solution preparation is conducted, specifically, deionized water is used as a solution, and the following components of main salt, a compounding ingredient, a stabilizer and a complexing agent are sequentially added into the solution, wherein the main salt is nickel sulfate hexahydrate with the density being 30-45 g / L, the compounding agent is ammonium chloride with the density being 25-30 g / L, and the stabilizer and the complexing agent are prepared in the mode that sodium citrate with the density being 15-25 g / L is prepared, and the PH value of the sodium citrate is adjusted to 10-11 through a sodium hydroxide solution; (3) pretreated carbon fibers are soaked into the plating solution prepared in the step two, and after the temperature of the plating solution rises to 80-100 DEG C, a hydrazine hydrate solution with the density being 25 ml / L is slowly dropwise added into the plating solution for reduction; and (4) the reduced carbon fibers are stored in a vacuum drying box with the temperature being 80-100 DEG C to be dried. According to the carbon fiber surface chemical nickel plating method, the nickel plated carbon fibers are prepared through the method of hydrazine hydrate direct reduction, and other harmful elements are not introduced into the nickel plating process.

Description

Technical field [0001] The invention relates to a method for nickel plating, in particular to a method for electroless nickel plating on the surface of carbon fibers. Background technique [0002] Carbon fiber is a microcrystalline graphite material obtained by carbonization and graphitization of organic fibers. It not only has the intrinsic characteristics of carbon materials, but also has the processability of fibers. It is a new type of reinforcing material. Carbon fiber has excellent characteristics such as low density, high specific modulus, high specific strength, high temperature resistance, radiation resistance, electrical conductivity, heat transfer, and small coefficient of thermal expansion. Therefore, it has broad application prospects in aerospace and civil fields. [0003] However, the graphite-like structure of carbon fiber leads to its surface inertness and lack of active functional groups. Therefore, it has poor adhesion to the matrix and has a series of interface ...

Claims

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Application Information

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IPC IPC(8): C23C18/34C23C18/18C22C47/04
CPCC22C47/04C23C18/1658C23C18/1893C23C18/34
Inventor 张柯柯霍福鹏王悔改张萌张超赵培峰潘毅博
Owner HENAN UNIV OF SCI & TECH
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