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A kind of graphene-iron 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 and energy consumption, safe and controllable preparation process, and simple preparation process

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 superlubricating effect between graphene and metal, and the adhesion between the two is weak, which brings great challenges to the direct electroplating of iron on the surface of graphene materials.

Method used

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

[0026] (1) Utilize the wet spinning method to prepare graphene oxide fibers with a diameter of 4 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 inner diameter of spinning head is 100 microns; The 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 4 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 iron 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 out...

Embodiment 3

[0035] A kind of electroplating method prepares the method for graphene and iron 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 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 and c...

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Abstract

The invention discloses a graphene-iron 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 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 has multi-stage folds, the pure graphene fiber is fixed on a negative electrode of a plating bath for electroplating, and an iron layer has an extension structure embedded into the folds. The graphene is tightly combined with an iron crystal, and a hole defect is avoided, so that the electrical properties of the material are greatly improved. The fiber is stable in structure and is 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-iron composite fiber and a preparation method thereof. Background technique [0002] Metallic iron has a wide range of application potentials in metal alloys, construction industry, and mold forming. Compared with other metal materials, it shows better ductility, but its mechanical strength is not high. In order to improve the practicability of iron and reduce the cost, the method commonly used at present is to make it into a composite material with relatively strong and conductive carbon materials. Carbon materials such as graphite and carbon nanotubes have good flexibility, so The resulting composite material will not significantly affect its processing performance and service performance while reducing the cost. [0003] Compared with graphite and carbon nanotubes, graphene has better electrical conductivity and better flexibility, so it is more suitable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/83C25D3/20C25D7/06D06M101/40
CPCC25D3/20C25D7/0607D06M11/83D06M2101/40
Inventor 高超方波
Owner 杭州德烯科技集团有限公司
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