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Preparation method of graphene primary coated copper wire

A graphene and copper-clad technology, which is used in equipment for manufacturing conductive/semiconducting layers, cable/conductor manufacturing, electrical components, etc., and can solve problems such as secondary damage of graphene, multiple layers, and environmental pollution. , to achieve the effect of improving performance

Inactive Publication Date: 2020-06-12
上海超碳石墨烯产业技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is mainly through: growing thick graphene on the nickel mesh, then etching the nickel mesh through acid and copper salt solutions, and then compounding the remaining three-dimensional graphene film and copper powder to prepare copper wires; the method mainly has problems : First, the graphene prepared by nickel mesh generally has a large number of layers, and it is difficult to control the number of layers from several layers to dozens of layers; second, the process is complicated and needs to be etched by acid and copper salt etching solution to etch the metal nickel. The etching process will not only leave metal substances on the surface of graphene, but also cause environmental pollution; third, the process of recombining three-dimensional graphene and copper powder will cause secondary damage to graphene

Method used

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  • Preparation method of graphene primary coated copper wire
  • Preparation method of graphene primary coated copper wire
  • Preparation method of graphene primary coated copper wire

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Embodiment 1

[0022] The present embodiment provides a kind of preparation method of graphene original coating copper wire, and concrete steps are as follows:

[0023] 1) Preparation of induced slurry: mix graphene oxide: water: additives at a ratio of 4.5%: 99: %: 0.5% and add to the homogenizer; wherein the graphene sheet diameter D90 is 1.7 μm, the thickness is 2 nm, and the specific surface area is 350 m 2 / g; the auxiliary agent is a mixed solution of polyvinylpyrrolidone and phosphate ester 1:1; the homogenizer process adopts a low-pressure homogenization pressure of 40bar and a time of 25min; a high-pressure homogenization of 900bar and a time of 35min; To wrap evenly;

[0024] 2) Reduction: The copper wire wrapped with the induced slurry is pulled to the reduction area at a low speed for drying and reduction, so that the surface of the copper wire is evenly attached to the surface of the copper wire after reduction, discontinuous, high-conductivity graphene microchips; the drying te...

Embodiment 2

[0029] The present embodiment provides a kind of preparation method of graphene original coating copper wire, and concrete steps are as follows:

[0030] 1) Preparation of induced slurry: mix graphene oxide: water: additives in a ratio of 1.5%: 99: %: 0.2% and add to a homogenizer; graphene sheet diameter D90 is 1.5 μm, thickness is 1.5 nm, and specific surface area is 380 m2 / g; the auxiliary agent is a mixed solution of sodium dodecylbenzenesulfonate and polyoxyethylene alkylphenol ether 1:1; the homogenizer process adopts a low-pressure homogenization pressure of 30bar, and a time of 20min; a high-pressure homogenization of 850bar, and a time of 30min ; After the induction slurry is prepared, the surface of the copper wire is evenly wrapped;

[0031] 2) Reduction: Pull the copper wire wrapped with the induced slurry to the reduction area at a low speed for drying and reduction, so that the surface of the copper wire is evenly attached to the reduced discontinuous, high-cond...

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Abstract

The invention discloses a preparation method of a graphene primary coated copper wire. The preparation method is characterized by comprising the following steps: coating the surface of a copper wire with graphene induction layer slurry in a soaking area, then carrying out drying and reduction treatment in a reduction area, and finally introducing a carbon source into a growth area to carry out plasma-induced in-situ coating on a graphene induction layer on the surface of the copper wire to grow graphene, so as to obtain the graphene primary coated copper wire. The liquid carbon source is usedas the precursor carbon source, and the plasma in-situ induction process is added, so that the surface of the copper wire can be primarily coated with the graphene layer with better quality quickly atlower temperature, and the performance of the copper wire is improved.

Description

technical field [0001] The invention belongs to the field of graphene, and in particular relates to a preparation method of a graphene-coated copper wire. Background technique [0002] The annual output value of the wire and cable industry in China exceeds 1.4 trillion yuan. The cable industry uses a large number of polymer materials, composite materials and metal materials, and the annual consumption is expected to reach one trillion yuan. Therefore, the performance improvement of materials can not be underestimated for the progress of the cable industry. Copper or copper alloy is the most commonly used material in wires and cables. It is cheap, has excellent electrical and thermal conductivity, and has good plasticity and corrosion resistance. However, pure copper wires have low strength, are prone to disconnection, and have high power grid failures. [0003] Graphene is known as the "King of New Materials" because of its excellent thermal, electrical, mechanical and opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00
CPCH01B13/0026
Inventor 梁勇刘志成胡晨曦王文强
Owner 上海超碳石墨烯产业技术有限公司
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