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Preparation method of carbon nano tube/copper powder

A carbon nanotube and copper powder technology, applied in metal processing equipment, coating, transportation and packaging, etc., can solve the problem of easy agglomeration of carbon nanotubes, and achieve the effect of promoting deposition, avoiding agglomeration and improving interface bonding strength.

Inactive Publication Date: 2016-04-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that carbon nanotubes are easy to agglomerate during the preparation of carbon nanotube-reinforced copper-based composite materials, the object of the present invention is to provide a method for preparing carbon nanotube / copper powder, which uses a chemical reduction method to realize carbon nanotube Electroless copper plating on the surface, by adjusting the concentration and pH of the plating solution to control the thickness of the copper coating,

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  • Preparation method of carbon nano tube/copper powder
  • Preparation method of carbon nano tube/copper powder
  • Preparation method of carbon nano tube/copper powder

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Embodiment 1

[0037] Step 1. Purification of carbon nanotubes: Put 1 g of carbon nanotubes into 200 mL of concentrated hydrochloric acid for ultrasonication and stir for 2 hours, then centrifuge, wash the precipitate with deionized water and ethanol, and dry it in a vacuum oven at 50°C , to obtain purified carbon nanotubes;

[0038] Step 2. Oxidation of carbon nanotubes: put 1 g of purified carbon nanotubes into 200 mL of a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, stir at 50° C. for 8 hours, and perform suction filtration after cooling to room temperature , washing the solid matter obtained by suction filtration with deionized water and ethanol, and putting it into a vacuum oven at 50°C for drying to obtain oxidized carbon nanotubes;

[0039] Step 3. Sensitization of carbon nanotubes: add 4.55g of tin protochloride to 200mL of dilute hydrochloric acid solution, mix well, then add 1g of oxidized carbon nanotubes, ultrasonically sti...

Embodiment 2

[0045] Step 1. Purification of carbon nanotubes: Put 1 g of carbon nanotubes into 200 mL of concentrated hydrochloric acid for ultrasonication and stir for 3 hours, then centrifuge, wash the precipitate with deionized water and ethanol, and dry it in a vacuum oven at 30°C , to obtain purified carbon nanotubes;

[0046] Step 2. Oxidation of carbon nanotubes: put 1 g of purified carbon nanotubes into 200 mL of a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, stir at 50° C. for 24 hours, and suction filter after cooling to room temperature , washing the solid matter obtained by suction filtration with deionized water and ethanol, and putting it into a vacuum oven at 30°C for drying to obtain oxidized carbon nanotubes;

[0047]Step 3. Sensitization of carbon nanotubes: add 4.55g of stannous chloride to 200mL of dilute hydrochloric acid solution, mix well, then add 1g of oxidized carbon nanotubes, ultrasonically stir at 50°C fo...

Embodiment 3

[0053] Step 1. Purification of carbon nanotubes: Put 1 g of carbon nanotubes into 200 mL of concentrated hydrochloric acid for ultrasonication and stir for 3 hours, then centrifuge, wash the precipitate with deionized water and ethanol, and dry it in a vacuum oven at 40°C , to obtain purified carbon nanotubes;

[0054] Step 2. Oxidation of carbon nanotubes: put 1 g of purified carbon nanotubes into 200 mL of a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, stir at 50° C. for 24 hours, and suction filter after cooling to room temperature , washing the solid matter obtained by suction filtration with deionized water and ethanol, and putting it into a vacuum oven at 40°C for drying to obtain oxidized carbon nanotubes;

[0055] Step 3. Sensitization of carbon nanotubes: Add 4.55g of tin protochloride to 200mL of dilute hydrochloric acid solution, mix well, then add 1g of oxidized carbon nanotubes, ultrasonically stir at 60°C f...

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Abstract

The invention relates to a preparation method of a carbon nano tube / copper powder, and belongs to the field of new material preparation. The method comprises the steps that a carbon nano tube is put into concentrated HCl for ultrasonic treatment and stirring, and a purified carbon nano tube is obtained; the purified carbon nano tube is put into a mixed solution of concentrated H2SO4 and concentrated HNO3, stirring is carried out at the temperature ranging from 50 DEG C to 60 DEG C, and an oxidized carbon nano tube is obtained; stannous chloride is added into a dilute HCl solution, then the oxidized carbon nano tube is added, ultrasonic treatment and stirring are carried out at the temperature ranging from 50 DEG C to 60 DEG C, and a sensitized carbon nano tube is obtained; palladium chloride is added into the dilute HCl solution, then the sensitized carbon nano tube is added, ultrasonic treatment and stirring are carried out, and an activated carbon nano tube is obtained; after being mixed, a copper sulfate solution and an ethylene diamine tetraacetic acid solution are stirred at the temperature ranging from 50 DEG C to 60 DEG C, the pH of the solution is adjusted, and a copper salt plating solution with the pH ranging from 7 to 12 is obtained; and the activated carbon nano tube is added into the copper salt plating solution, then formaldehyde is added, the pH of a reaction solution is adjusted for a reaction, and the carbon nano tube / copper powder is obtained.

Description

technical field [0001] The invention relates to a method for preparing carbon nanotube / copper powder, in particular to a method for preparing carbon nanotube / copper powder by using a chemical reduction method, and belongs to the field of new material preparation. technical background [0002] In recent years, metal matrix composites have been widely used as structural materials in the aerospace, automotive, marine and defense industries. However, with the development of technology, higher requirements are put forward for the performance of metal matrix composites. For copper-based composites, the mechanical properties are usually improved by adding alloy elements or oxide particles, but the electrical and thermal conductivity will decrease significantly. Carbon nanotubes have outstanding mechanical, thermal, and electrical properties, so they are an ideal strengthening phase. Carbon nanotube-reinforced copper-based composites have significantly improved mechanical properti...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/02
CPCB22F9/24B22F1/17
Inventor 张朝晖王虎刘颖胡正阳王富耻
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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