Preparation method and device of high-strength and high-conductivity copper-carbon nanotube composite material under magnetic field

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...

AI Technical Summary

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.

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