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A kind of graphene-gold 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, good performance, 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 super-lubricating effect between graphene and metal, and the adhesion between the two is weak, which brings great challenges to the direct electroplating of gold on the surface of graphene materials.

Method used

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  • A kind of graphene-gold composite fiber and preparation method thereof
  • A kind of graphene-gold composite fiber and preparation method thereof
  • A kind of graphene-gold 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 gold 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 4 microns (Carbon Gu Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 2mg / mL; The inner diameter of spinning head is 60 microns; The coagulation bath is the mixed solution of ethyl acetate and dichloromethane (the volume ratio of the two is 2 : 1), the external heating temperature when receiving wire is 130 ℃.

[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 24 hours, a graphene fiber with a diameter of 3 microns is obtained.

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

Embodiment 2

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

[0031] (1) Utilize the wet spinning method to prepare graphene oxide fibers with a diameter of 7 microns, specifically: the spinning solution of wet spinning is: graphene oxide with a sheet diameter of 8 microns (Carbon Gu Shangxi) In the dispersion liquid in dimethylformamide, the concentration of graphene oxide is 6mg / 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 50 : 1), the external heating temperature when receiving wire is 180 ℃.

[0032] (2) Place the graphene oxide fiber in a high-temperature furnace to heat and reduce it at a temperature of 1500° C. After heating for 3 hours, a graphene fiber with a diameter of 7 microns is obtained;

[0033] (3) Graphene fibers are fixed on the negative electrode of the electroplating tank for ...

Embodiment 3

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

[0036] (1) Graphene oxide fibers with a diameter of 48 microns are prepared by wet spinning, 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 9mg / mL; The internal diameter of spinning head is 500 microns; Coagulation bath is the mixed solution of ethyl acetate and dichloromethane (both volume ratios are 60 : 1), the external heating temperature when receiving the wire is 200 ℃.

[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 48 microns is obtained.

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

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Abstract

The invention discloses a graphene-gold composite fiber and a preparation method thereof. The method comprises the steps as follows: a graphene oxide fiber with diameter being 1-50 microns is prepared with a wet spinning method and is put in a high-temperature furnace for heating reduction, and the continuous pure graphene fiber is obtained. Due to the special treatment manner, the fiber surface has multi-stage wrinkles, the pure graphene fiber is fixed to a negative electrode in a plating tank for plating, and a gold layer has an extension structure embedded in the wrinkles. Graphene and gold crystals are integrated closely without the defect of holes, thus, electrical properties of the material are greatly improved. The fiber is stable in structure and has the constant conductivity after being bent a hundred times.

Description

technical field [0001] The invention relates to a novel graphene-metal composite material, in particular to a graphene-gold composite fiber and a preparation method thereof. Background technique [0002] Metal gold has a wide range of application potentials in jewelry, medical fields, and chemical catalysis. Compared with other metal materials, it shows better calenderability, corrosion resistance and chemical reactivity. However, the price of gold is relatively expensive. In order to ensure the practicability of gold and reduce the cost, the method commonly used at present is to make composite materials with relatively flexible and conductive carbon materials. Carbon materials such as graphite and carbon nanotubes have better The flexibility, so 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/83C25D3/48C25D7/06D06M101/40
CPCC25D3/48C25D7/0607D06M11/83D06M2101/40
Inventor 高超方波
Owner 杭州德烯科技集团有限公司
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