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Graphene-magnesium composite fiber and preparation method thereof

A graphene fiber and composite fiber technology, applied in fiber processing, wet spinning, textiles and papermaking, etc., can solve problems such as weak adhesion, achieve less time and energy consumption, safe and controllable preparation process, and wide source of raw materials Effect

Inactive Publication Date: 2017-05-17
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 magnesium on the surface of graphene materials.

Method used

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  • Graphene-magnesium composite fiber and preparation method thereof
  • Graphene-magnesium composite fiber and preparation method thereof
  • Graphene-magnesium 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 magnesium 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 50 microns (Carbon Valley Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 1mg / mL; The inner diameter of spinning head is 60 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 7 microns is obtained.

[0028] (3) Graphene fiber is fixed on the negative pole of electroplating ta...

Embodiment 2

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

[0031] (1) Graphene oxide fibers with a diameter of 12 microns are prepared by wet spinning, specifically: the spinning solution for wet spinning is: graphene oxide with a sheet diameter of 1 micron (Carbon Gu Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 10mg / mL; The inner diameter of spinning head is 250 microns; Coagulation bath is the mixed solution of ethyl acetate and dichloromethane (both volume ratios are 50 : 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 12 microns is obtained;

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

Embodiment 3

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

[0036] (1) Graphene oxide fibers with a diameter of 27 microns are prepared by wet spinning, specifically: the spinning solution for wet spinning is: graphene oxide with a sheet diameter of 30 microns (Carbon Valley Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 6mg / mL; The inner diameter of spinning head is 500 microns; Coagulation bath is the mixed solution of ethyl acetate and dichloromethane (both volume ratios are 20 : 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 28 microns is obtained.

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

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Abstract

The invention discloses graphene-magnesium composite fiber and a preparation method thereof. According to the method, firstly, a wet process spinning method is used for preparing graphene oxide fiber with the diameter being 1 to 50 micrometers; then, the graphene oxide fiber is put into a high-temperature furnace to be heated and reduced to obtain the continuous pure graphene fiber. Due to the adoption of the special treatment mode, the fiber surface has multiple stages of drapes, and the pure graphene fiber is fixed onto a negative electrode of a plating bath to be electrically plated; the magnesium layer has the extending structure embedded into the drapes. The graphene and the magnesium crystals are tightly combined; the hole defects do not exist; the electric performance of the material is greatly improved; the fiber structure is stable; the conductivity is not changed after the bending for one hundred times.

Description

technical field [0001] The invention relates to a novel graphene metal composite material, in particular to a graphene-magnesium composite fiber and a preparation method thereof. Background technique [0002] Metal magnesium has wide application potential in rare earth alloys, steel smelting desulfurization, and transportation industries. Compared with other metal materials, it has more excellent impact resistance and machinability. In order to further reduce its application cost, the currently commonly used method is to make composite materials with carbon materials. Carbon materials such as graphite and carbon nanotubes have extremely low volume densities, so the composite materials made can reduce costs while reducing costs. It will not significantly affect its processing performance and performance. [0003] Compared with graphite and carbon nanotubes, graphene has better electrical conductivity, so it is more suitable for composite materials with magnesium. Magnesium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/06C25D7/06D01D5/06
CPCD06M10/06C25D7/0607D01D5/06
Inventor 高超方波
Owner 杭州德烯科技集团有限公司
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