A kind of graphene-copper composite fiber and preparation method thereof

A graphene fiber and composite fiber technology, applied in carbon fiber, fiber processing, textiles and papermaking, etc., can solve problems such as weak adhesion, and achieve the effects of less time-consuming and energy-consuming, simple preparation process, and dense fiber structure.

Active Publication Date: 2019-04-30
杭州德烯科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, unlike other carbon materials, there is a super-lubricating effect between graphene and metal, and the adhesion between the two is weak, which brings great challenges to direct copper plating on the surface of graphene materials.

Method used

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  • A kind of graphene-copper composite fiber and preparation method thereof
  • A kind of graphene-copper composite fiber and preparation method thereof
  • A kind of graphene-copper composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of electroplating method prepares the method for graphene and copper composite fiber, comprises following process:

[0026] (1) Utilize the wet spinning method to prepare graphene oxide fibers with a diameter of 5 microns, specifically: the spinning solution of wet spinning is: graphene oxide with a sheet diameter of 5 microns (Carbon Valley Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 10mg / mL; The inner diameter of spinning head is 100 microns; : 1), the external heating temperature when receiving the wire is 200 ℃.

[0027] (2) Place the graphene oxide fiber in a high-temperature furnace for heating and reduction at a temperature of 800° C. After heating for 1.5 hours, a graphene fiber with a diameter of 5 microns is obtained.

[0028] (3) Graphene fiber is fixed on the negative pole of electroplating tank and carries out electroplating, and electroplating tank positive pole is high-purity copper bar, applies t...

Embodiment 2

[0030] A kind of electroplating method prepares the method for graphene and copper composite fiber, comprises following process,

[0031] (1) Utilize the wet spinning method to prepare graphene oxide fibers with a diameter of 10 microns, specifically: the spinning solution of wet spinning is: graphene oxide with a sheet diameter of 5 microns (Carbon Gu Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 8mg / mL; The internal diameter of spinning head is 250 microns; Coagulation bath is the mixed solution of ethyl acetate and dichloromethane (both volume ratios are 10 : 1), the external heating temperature when receiving wire is 80 ℃.

[0032] (2) Place the graphene oxide fiber in a high-temperature furnace to heat and reduce it at a temperature of 2200° C. After heating for 3 hours, a graphene fiber with a diameter of 10 microns is obtained;

[0033] (3) Graphene fiber is fixed on the negative pole of electroplating tank and carries o...

Embodiment 3

[0035] A kind of electroplating method prepares the method for graphene and copper composite fiber, comprises following process:

[0036] (1) Utilize the wet spinning method to prepare graphene oxide fibers with a diameter of 30 microns, specifically: the spinning solution of wet spinning is: graphene oxide with a sheet diameter of 50 microns (Carbon Valley Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 11mg / mL; The inner diameter of spinning head is 500 microns; The coagulation bath is the mixed solution of ethyl acetate and dichloromethane (both volume ratios are 200 : 1), the external heating temperature when receiving wire is 100 ℃.

[0037] (2) Put the graphene oxide fiber in a high-temperature furnace for heating and reduction at a temperature of 3000° C. After heating for 1 hour, a graphene fiber with a diameter of 30 microns is obtained.

[0038] (3) Graphene fiber is fixed on the negative pole of electroplating tank and...

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Abstract

The invention discloses a graphene-copper composite fiber and a preparation method thereof. The method comprises the steps of firstly preparing a graphene oxide fiber of which the diameter is 1-50 microns by adopting a wet spinning method, and then putting the graphene oxide fiber into a high-temperature furnace for heating and reducing to obtain a continuous pure graphene fiber. Due to a special treatment mode, the fiber surface is provided with multi-stage wrinkles, the pure graphene fiber is fixed on a negative electrode of a plating bath for electroplating, and a copper layer has an extension structure embedded into the wrinkles. Graphene is tightly combined with copper crystals, a hole defect is avoided, the electrical properties of the material are greatly improved, the fiber is stable in structure and constant in electric conductivity after being bent for 100 times.

Description

technical field [0001] The invention relates to a novel graphene metal composite material, in particular to a graphene-copper composite fiber and a preparation method thereof. Background technique [0002] Metal copper is very relevant to our daily life, and has wide application potential in emerging industries and power energy fields. Compared with other metal materials, it shows better electrical conductivity, thermal conductivity and ductility. In order to improve the application value of copper, the currently commonly used method is to make composite materials with relatively strong and conductive carbon materials to reduce the specific conductivity. Carbon materials such as graphite and carbon nanotubes have better flexibility. Therefore, the composite material made will not significantly affect its processing performance and use performance while reducing the cost. [0003] Compared with graphite and carbon nanotubes, graphene has better electrical conductivity and be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/83C25D5/54C25D7/06D06M101/40
CPCC25D5/54C25D7/0607D06M11/83D06M2101/40
Inventor 高超方波
Owner 杭州德烯科技集团有限公司
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