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Chemical method for coating nickel and zinc on multi-wall nano carbon tube surface

A technology of multi-walled carbon nanotubes and carbon nanotubes, applied in liquid chemical plating, metal material coating process, coating, etc., can solve the problems of high chemical potential of zinc and undiscovered

Inactive Publication Date: 2007-10-24
HUBEI UNIV OF TECH
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  • Summary
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Problems solved by technology

However, the chemical potential of zinc is high, and it is difficult for redox reactions to occur. It is difficult to coat zinc on the surface of carbon nanotubes. At present, there is no research report on nickel-zinc plating on the surface of carbon nanotubes.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The process steps of electroless nickel-zinc plating on the surface of multi-walled carbon nanotubes are as follows:

[0018] 1. Purification treatment: use lye to remove fatty substances on the surface of carbon nanotubes. Put the carbon nanotubes into NaOH aqueous solution with a concentration of 1-3mol / L, oscillate in an ultrasonic oscillator to fully disperse, the ultrasonic mode is 30 seconds per ultrasonic, stop for 30 seconds; heat for 0.2-2 hours, cool to room temperature; use deionization Wash with water until neutral; dry the washed powder in a vacuum oven;

[0019] A better value is: put carbon nanotubes into NaOH aqueous solution with a concentration of 2mol / L, oscillate in an ultrasonic oscillator to fully disperse, the ultrasonic mode is 30 seconds of ultrasonication, stop for 30 seconds; heat for 1 hour, and cool to room temperature.

[0020] 2. Add 5-15 grams of purified carbon nanotubes into 250mL concentrated nitric acid for oxidation treatment, heat ...

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Abstract

The invention discloses a chemical Ni-Zn plating method on the surface of multi-wall nanometer carbon pipe, which is characterized by the following: a. predisposing the nanometer pipe before plating Ni-Zn; purifying; oxidizing; obtaining the pure nanometer carbon pipe; activating; sensibilizing; making the surface of nanometer carbon pipe form catalytic metal core; b. adding the predisposed nanometer carbon pipe in the Ni-Zn plating liquid; dispersing completely through ultrasonic oscillator; sedimenting Ni-Zn-P on the catalytic metal core of nanometer carbon pipe surface to grow; forming continuous connecting plating layer; lasting to sediment through the self-catalytic activity of nickel; obtaining thicker plating layer.

Description

technical field [0001] The invention relates to a method for electroless nickel-zinc plating on the surface of multi-wall nanometer carbon tubes. Electroless nickel-zinc-plated carbon nanotubes can be combined with high-strength non-ferrous metal substrates such as magnesium and aluminum, and become an ideal reinforcement for preparing high-mechanical properties and light-weight composite materials. It has broad application prospects. Background technique [0002] The interface formed by direct compounding of carbon nanotubes and metals is fragile, and ideal mechanical properties cannot be obtained. If metal is plated on the surface of carbon nanotubes to make it a medium for the combination of carbon nanotubes and the matrix, the problem of high-strength bonding between carbon nanotubes and the metal matrix can be solved. [0003] At present, there are many research reports on nickel plating on the surface of carbon nanotubes, and some achievements have been made. Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/48C23C18/18
Inventor 李四年郑重陈慧敏
Owner HUBEI UNIV OF TECH
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