Preparation method of carbon nano tube-copper oxide composite powder

A technology of carbon nanotubes and copper oxides, which is applied in the direction of liquid chemical plating, coating, metal material coating technology, etc., can solve the problems that the thickness of the coating is difficult to control, and the carbon nanotubes are difficult to form a complete and continuous coating, so as to achieve improvement Activation ability, side reaction avoidance, wettability improvement effect

Inactive Publication Date: 2010-06-02
HARBIN INST OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the traditional copper plating process is difficult to form a complete continuous coating on ...

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  • Preparation method of carbon nano tube-copper oxide composite powder
  • Preparation method of carbon nano tube-copper oxide composite powder
  • Preparation method of carbon nano tube-copper oxide composite powder

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specific Embodiment approach 1

[0009] Specific embodiment one: the preparation method of the carbon nanotube-copper oxide composite powder in this embodiment is carried out according to the following steps: the preparation method of the carbon nanotube-copper oxide composite powder is carried out according to the following steps: The carbon nanotubes are pretreated by the steps of oxidation, sensitization and activation in sequence; then the pretreated carbon nanotubes are placed in a plating solution with a constant temperature of 15-25°C for ultrasonic treatment to perform electroless copper oxide plating for 30min- 3h; then filter with a microporous membrane, wash with water until the pH value is 7.0; then put it into a drying box, and dry it in an air atmosphere at a temperature of 105°C for 24 hours to obtain a carbon nanotube-copper oxide composite powder body; where the plating solution is proportionally composed of 16gCuSO 4 ·5H 2 O, 40gNaKC 4 h 4 o 6 4H 2 O, 12mL HCHO, 2g NiCl 2 ·6H 2 O, 40m...

specific Embodiment approach 2

[0010] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the oxidation treatment is to mix concentrated sulfuric acid and concentrated nitric acid at a volume ratio of 3:1 to obtain a mixed acid, put carbon nanotubes into it, and Stir under magnetic force for 24 hours, then dilute with distilled water 20-40 times the volume of the mixed acid, then filter with a microporous membrane, and then wash with distilled water until the pH value of the filtered solution is equal to 6.5-7. Other steps and parameters are the same as in the first embodiment.

[0011] In this embodiment, the concentration of concentrated sulfuric acid used to prepare the mixed acid is 98% (weight), and the concentration of concentrated nitric acid is 68-70% (weight).

specific Embodiment approach 3

[0012] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the oxidation treatment is to put the carbon nanotubes into concentrated nitric acid with a mass concentration of 68-70%, and stir and reflux at 120°C for 10 hours . Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention discloses a preparation method of carbon nano tube-copper oxide composite powder, which relates to a preparation method of carbon nano tube copper-base composite powder. The invention solves the problems that complete and continuous plating is difficult to form on the carbon nano tube surface and the plating thickness is not easy to control in the tradition technique. The method of the invention is realized in a way as follows: the carbon nano tubes are pretreated orderly by oxidization, sensitization and activation, and copper oxides are chemically plated on the carbon nano tubes, thereby obtaining the carbon nano tube-copper oxide composite powder. The invention improves the dispersibility and the activation capacity of the carbon nano tubes through the pretreatment before plating, and avoids the subsidiary reaction in the process of chemical plating, thereby finally obtaining the continuous copper oxide plating on the carbon nano tube surface, and the coverage rate of the plating reaches 85-95%; and the invention has the advantages of uniform plating and controllable plating thickness. The wetting property of the carbon nano tube and the metal base after the carbon nanometer tube is chemically plated with copper oxides is enhanced, thereby laying foundation for applications of carbon nano tubes in the field of composite materials.

Description

technical field [0001] The invention relates to a preparation method of carbon nanotube copper-based composite powder. Background technique [0002] Carbon nanotubes (CNTs) have a unique structure and excellent mechanical, physical and chemical properties, and are ideal reinforcements for composite materials. Carbon nanotube-reinforced metal and metal oxide-based composites have many potential applications in the fields of electronics, catalysis, and composite materials, and are research hotspots in recent years. However, its wettability with the base metal is poor, and a continuous layer of copper or copper oxide coating is plated on the surface of carbon nanotubes by electroless plating to improve the wettability of carbon nanotubes and metal substrates and enhance the interfacial bonding force. Observation by TEM shows that: due to the large aspect ratio of carbon nanotubes, low surface chemical reactivity, large surface curvature, thin diameter and thin coating (50-100n...

Claims

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Application Information

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IPC IPC(8): B22F1/00C23C18/40C23C18/18
Inventor 张学习应红耿林
Owner HARBIN INST OF TECH
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