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

A graphene fiber and composite fiber technology, applied in fiber treatment, wet spinning, physical treatment, etc., can solve problems such as weak adhesion, and achieve the effect of less time and energy consumption, dense fiber structure and good performance

Active Publication Date: 2019-05-14
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 superlubricating effect between graphene and metal, and the adhesion between the two is very weak, which brings great challenges to the direct electroplating of nickel on the surface of graphene materials.

Method used

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  • A kind of graphene-nickel composite fiber and preparation method thereof
  • A kind of graphene-nickel composite fiber and preparation method thereof
  • A kind of graphene-nickel 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 nickel composite fiber, comprises following process:

[0026] (1) Utilize the wet spinning method to prepare graphene oxide fibers with a diameter of 3 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 4mg / mL; The inner diameter of spinning head is 60 microns; Coagulation bath is the mixed solution of ethyl acetate and dichloromethane (both volume ratios are 1 : 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 1000° C. After heating for 1.5 hours, a graphene fiber with a diameter of 3 microns is obtained.

[0028] (3) Graphene fibers are fixed on the negative pole of the electroplating tank...

Embodiment 2

[0030] A kind of electroplating method prepares the method for graphene and nickel 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 nickel 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 the wire is 100 ℃.

[0037] (2) Put the graphene oxide fiber in a high-temperature furnace for heating and reduction at a temperature of 2700° 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...

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Abstract

The invention discloses graphene-nickel composite fiber and a preparation method thereof. Firstly, graphene oxide fiber with the diameter of 1-50 mu m is prepared with a wet spinning method and then put in a high-temperature furnace to be heated and reduced, and continuous pure graphene fiber is obtained. The fiber surface has multi-level wrinkles because of a special treatment mode, and after the pure graphene fiber is fixed in a negative electrode of an electroplating bath to be electroplated, a nickel layer has an extending structure embedded in the wrinkles. Graphene is closely combined with nickel crystals, hole defects are overcome, and the electrical performance of a material is greatly improved. The fiber structure is stable, and the conductivity is unchanged after 100 times of bending.

Description

technical field [0001] The invention relates to a novel graphene metal composite material, in particular to a graphene-nickel composite fiber and a preparation method thereof. Background technique [0002] Metal nickel has a wide range of application potentials in iron and steel smelting, nickel-based alloys, energy industry and electrocatalysis. Compared with other metal materials, it shows better corrosion resistance, high temperature resistance and rust resistance. In order to improve the practicability of nickel and reduce the cost, the commonly used method is to make composite materials with relatively flexible and conductive carbon materials. Carbon materials such as graphite and carbon nanotubes have good flexibility, so making The resulting composite material will not significantly affect its processing performance and use performance while reducing costs. [0003] Compared with graphite and carbon nanotubes, graphene has better electrical conductivity and better fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M10/06C25D7/06D01D5/06
CPCC25D7/0607D01D5/06D06M10/06
Inventor 高超方波
Owner 杭州德烯科技集团有限公司
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