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Preparation method for copper-carbon nano tube (CNT) composite powder

A carbon nanotube composite and carbon nanotube technology, which is applied in the field of nanomaterials, can solve the problems of interaction between carbon nanotubes and matrix copper catalyst and matrix, and achieve the effects of easy control and implementation, uniform distribution of CNTs and low cost.

Active Publication Date: 2016-07-20
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned technical problems in the prior art, the invention provides a kind of copper-carbon nanotube powder and its preparation method, and described this copper-carbon nanotube powder and its preparation method should solve carbon nanotube in copper matrix The problem of uniform dispersion on the surface, the bonding problem between carbon nanotubes and copper substrate, and the technical problems of the interaction between catalyst and substrate

Method used

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  • Preparation method for copper-carbon nano tube (CNT) composite powder
  • Preparation method for copper-carbon nano tube (CNT) composite powder

Examples

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Embodiment 1

[0022] A preparation method of copper-carbon nanotube composite powder is carried out according to the following steps:

[0023] 1) A step of preparing copper-chromium alloy powder by water mist method, weighing chromium and copper powder matrix according to mass percentage, the mass percentage of described chromium is 0.6wt% of copper-chromium alloy powder, and the particle size of described chromium is in 400 mesh, the balance is the copper powder matrix, and then heat treatment is carried out. In the heat treatment process, Ar gas protection is selected, and hydrogen protection of 100 to 500 ccm is introduced at the same time. The heat treatment temperature is 800 ° C. The chromium in the copper powder Solid solution in the matrix for 1 hour, then aging treatment at 450°C for 1 hour, so that chromium is uniformly dispersed on the copper powder matrix, and a copper-chromium composite powder with catalytic activity is prepared, and then cleaned in alcohol for 24 hours, and ele...

Embodiment 2

[0028] A preparation method of copper-carbon nanotube composite powder is carried out according to the following steps:

[0029] 1) A step of preparing copper-chromium alloy powder by water mist method, weighing chromium and copper powder matrix according to mass percentage, the mass percentage of described chromium is 0.4wt% of copper-chromium alloy powder, and the particle size of described chromium is in 200 mesh, the balance is the copper powder matrix, and then heat treatment is carried out. In the heat treatment process, Ar gas protection is selected, and hydrogen protection of 100 to 500 ccm is introduced at the same time. The heat treatment temperature is 800 ° C. The chromium in the copper powder Solid solution in the matrix for 1 hour, then aging treatment at 450°C for 2 hours, so that chromium is uniformly dispersed on the copper powder matrix, and a copper-chromium composite powder with catalytic activity is prepared, and then cleaned in alcohol for 24 hours, and el...

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Abstract

The invention discloses a preparation method for copper-carbon nano tube (CNT) composite powder. The method includes the steps that copper-chromium alloy powder is prepared through a water mist method, specifically, through heat treatment, chromium is uniformly dispersed on a copper powder substrate; CNT growing is conducted, specifically, a hyaline-quartz boat is selected as a substrate, the quartz boat substrate is treated and then uniformly covered with a layer of the copper-chromium alloy powder to form a catalyst thin film, the obtained catalyst thin film quartz boat is put in a quartz tube of a water-assistance chemical vapor deposition CNT growing furnace, the temperature is increased to growth temperature, and in the heating process, argon and hydrogen are fed and then the hydrogen, ethylene and water steam are fed so as to perform CNT growing; and after growing is finished, feeding of carbon source gases and the water steam is stopped, the gas flow of the hydrogen and the argon is adjusted, cooling is performed, and then the CNT / copper composite powder is obtained. According to the copper-CNT powder obtained through the preparation method, a copper-CNT bonding interface is good, and CNT distribution is uniform.

Description

technical field [0001] The invention belongs to the field of nanomaterials, and relates to a copper-carbon nanotube powder and a preparation method thereof. Background technique [0002] Carbon nanotube is a new material with extremely high comprehensive performance discovered by Japanese NEC scientist Iijima.S. in 1991. Due to its small density, high strength, large specific surface area, good electrical and thermal conductivity, its elastic modulus is almost It is equivalent to diamond, reaching 1.2TPa, and its specific strength is dozens of times that of steel. Carbon nanotubes have become an ideal reinforcement phase for metal matrix composites. Recently, carbon nanotube-reinforced metal matrix composites have become a research hotspot. [0003] However, in order to make CNTs play a role in composite materials, there are several problems that must be solved: (1) carbon nanotubes are uniformly dispersed in the matrix, and uniform dispersion includes that carbon nanotubes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/26B22F9/08B82Y40/00
CPCB22F9/082B22F2009/0828B82Y40/00C23C16/26
Inventor 陈小红刘平付少利刘鹏忠陈洲周洪雷刘新宽马凤仓李伟何代华张柯
Owner UNIV OF SHANGHAI FOR SCI & TECH
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