Method and device for preparing high-strength and high-conductivity copper-carbon nano-tube composite material under magnetic field

A technology of carbon nanotubes and composite materials, which is applied in the field of preparation, can solve the problems of lack of effective means, the conductivity of pure copper in composite materials has not been greatly improved, and achieve directional and orderly arrangement, uniform dispersion and stable production process Reliable, energy-saving effect

Active Publication Date: 2016-06-22
SHANGHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the existing research such as the composite material prepared by the ultrasonic vibration assisted composite electrodeposition method has achieved uniform distribution and good bonding of carbon nanotubes on the copper substrate, but has not yet achieved its directional and ordered distribution, so that the composite material conducts electricity. The rate is not much higher than that of pure copper
It can be seen that there is still a lack of effective means to prepare copper-based carbon nanotube composites with high strength and high conductivity and directional and orderly distribution of carbon nanotubes.

Method used

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  • Method and device for preparing high-strength and high-conductivity copper-carbon nano-tube composite material under magnetic field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this example, see figure 1 , a preparation device for high-strength and high-conductivity copper-carbon nanotube composite materials under a magnetic field, mainly comprising an electroplating device and an electroplating auxiliary temperature control system, the electroplating device mainly consists of an electroplating tank 4, an electroplating tank cover 14, an anode 8, and a cathode 9 , power supply 11, inject electroplating solution 6 into the electroplating tank 4, arrange the anode 8 and the cathode 9 in the electroplating tank 4 in parallel, and make the anode 8 and the cathode 9 immerse in the electroplating solution 6, and the anode 8 and the cathode 9 also pass through the The wire is connected to the positive and negative poles of the power supply 11, the electroplating tank cover plate 14 seals the inner cavity of the electroplating tank 4, and the electroplating auxiliary temperature control system is mainly composed of a thermocouple 15, a heating devic...

Embodiment 2

[0048] This embodiment is basically the same as Embodiment 1, especially in that:

[0049] In the present embodiment, the power supply 11 is a pulse power supply with adjustable duty cycle and frequency, the copper strip and the anode 8 form an electrode system, and form a horizontal electrode system in which each electrode surface is in a horizontal direction, and the constant magnetic field generator 1 produces The direction of the magnetic field is the horizontal direction. The horizontal weak magnetic field vertical electrode system and the horizontal weak magnetic field horizontal electrode system are introduced into the preparation process of high-strength and high-conductivity copper-carbon nanotube composites, because the magnetic field direction, magnetic field strength and electrode orientation change The impact on the electrical and mechanical properties of the composite coating can prepare copper-carbon nanotube composite materials with better performance.

Embodiment 3

[0051] This embodiment is basically the same as the previous embodiment, and the special features are:

[0052] In this embodiment, under the premise that the dispersant polyacrylic acid exists, the auxiliary dispersant cetyltrimethylammonium bromide is added to further improve the dispersion effect of the plating solution, and it can also be applied to iron, nickel, aluminum or Composite electrodeposition preparation process of magnesium metal matrix.

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Abstract

The invention discloses a method and device for preparing a high-strength and high-conductivity copper-carbon nano-tube composite material under a magnetic field. A dispersing agent is added to enable a bilayer structure to be formed on a carbon nano-tube particle surface, an outer-layer dispersing agent polar end and a plating solution have the higher affinity, the wetting degree of carbon nano-tube particles by the plating solution is improved, and uniform dispersion distribution of the particles is facilitated; in the plating process, the exerted magnetic field and an electric field interact to generate the magnetohydrodynamic effect caused by Lorentz force, so that the mass transfer effect of the planting solution is enhanced, and the uniformity of the plating solution is improved; the nano-tube particles are stretched in the axial direction under the effect of the Lorentz force, and are orderly arranged in an orientation manner under the effect of the magnetic field; meanwhile, adhesive force between the composite electrodeposition nano-tube particles and a metal belt base plate is increased due to the effect of the magnetic field, and compactness and stability of a copper-carbon nano-tube composite plating layer are improved; and due to the fact that the phenomenon that copper ions are wrapped with a nano-tube exists, the contact resistance between the nano-tube and a metal base plate is reduced, and therefore the conductivity of the copper-carbon nano-tube composite material is effectively improved.

Description

technical field [0001] The invention relates to a method and a device for preparing a metal-based composite material, in particular to a method and a device for preparing a composite layer on the surface of a metal substrate, which are applied in the technical field of processing and application of nano-composite materials. Background technique [0002] In the 21st century, with the continuous and rapid growth of China's economy and the needs of the development of science and technology and industrial production, electric power technology has gradually been widely used in communication, transportation, power, etc., and the demand for electric power in society has also increased sharply. The high-strength and high-conductivity cable products that need to be used in the power grid system provide a huge market space. In addition, copper is a traditional metal material with excellent electrical and thermal conductivity, corrosion resistance and processability, and is widely used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D15/00C25D5/22
CPCC25D5/22C25D15/00
Inventor 钟云波陆干祥彭明虎
Owner SHANGHAI UNIV
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