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Method for preparing graphene fiber by graphene membrane twisting forming method

A technology of graphene fiber and graphene film, which is applied to the chemical characteristics of fibers, textiles, papermaking, yarn, etc., can solve the problems of high energy consumption in drying and complicated process, and achieve good flexibility, simple operation process and tight combination Effect

Active Publication Date: 2018-03-09
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing graphene fibers by dry method in order to overcome the disadvantages of large drying energy consumption and complicated process in the preparation method of preparing graphene fibers by wet method in the prior art

Method used

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  • Method for preparing graphene fiber by graphene membrane twisting forming method

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Comparison scheme
Effect test

Embodiment 1

[0020] Copper foil-loaded graphene film roll 1 is prepared on the surface of copper foil with a width of 50 cm by CVD method, and the copper foil roll is introduced into a pool 5 with a temperature of 90 ° C. The graphene film will be separated from the copper foil, and the Copper foil is rewound at a speed of 0.1 m / min. 2. The graphene film is gathered and twisted. 3. Twisted into a graphene fiber with a twist of 1000 twists / 10 cm and a diameter of 70 μm. 4. The graphene sheet is simultaneously increased by twisting. The combination fastness solves the problem that the strength of graphene fibers prepared by other methods is not greatly improved. At the same time, it is output to a winding forming device to directly make a twisted graphene fiber bobbin with a certain volume capacity.

Embodiment 2

[0022] Use CVD equipment to heat the copper foil to 1060 degrees to prepare copper foil-loaded graphene film coils on the surface of copper foil with a width of 100 cm, and introduce the copper foil coils into water at a temperature of 80 ° C. The foil is separated, and the copper foil is rewound at a speed of 0.01 m / min. The graphene film is twisted by a ring spinning gathering and twisting device into a wire with a twist of 2000 twists / 10 cm and a diameter of 120 μm. Twisting synchronously increases the bonding fastness of graphene sheets, which solves the problem that the strength of graphene fibers prepared by other methods is not greatly improved; at the same time, it is output to the winding forming device to directly make graphene fibers with a certain winding capacity and twist bobbin.

Embodiment 3

[0024] Prepare a copper foil-loaded graphene film coil on the surface of a copper foil with a width of 120 cm by vacuum heating the copper foil to 1060 degrees, and introduce the copper foil coil into water at a temperature of 90 ° C. Separation occurs, and the copper foil is rewound at a speed of 0.01 m / min. The graphene film is twisted by an air-jet spinning gathering and twisting device into a wire with a twist of 2000 twists / 10 cm and a diameter of 150 μm. Three wires are twisted together to form a wire of 210 μm line. Twisting synchronously increases the bonding fastness of graphene sheets, which solves the problem that the strength of graphene fibers prepared by other methods is not greatly improved; at the same time, it is output to the winding forming device to directly make graphene fibers with a certain winding capacity and twist bobbin.

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Abstract

The invention discloses a method for preparing graphene fibers by a graphene film twisting forming method, which uses a chemical vapor deposition method or a method of vacuum heating copper foil to prepare a copper foil-loaded graphene film coil on the surface of the copper foil; the copper foil is loaded The graphene film roll is introduced into water with a temperature of 60-90°C, and the graphene film is separated from the copper foil to obtain a graphene film; the copper foil is rewound and recycled, and the graphene film is twisted into a graphene fiber by a gathering and twisting device. At the same time, it is output to the winding forming device to directly make a twisted graphene fiber bobbin. The method is easy to operate, utilizes existing textile equipment to directly realize the preparation of graphene fibers, has low cost, and can be produced continuously in large quantities; the graphene fibers prepared by the present invention have twist, interlayer bonding, uniform appearance and internal structure, and are mechanically stable. It has excellent performance, good flexibility and bendability, and can be coated with nano-functional materials before slitting the graphene oxide film to obtain nano-functional composite graphene fibers.

Description

technical field [0001] The invention belongs to the technical field of graphene material preparation, and in particular relates to a method for preparing graphene fibers by a graphene membrane twisting forming method, and the method is a dry spinning method. Background technique [0002] As the most basic structural unit of all carbon materials, graphene has a true monoatomic layer thickness and strict two-dimensional structure, and has high mechanical strength, elasticity, thermal conductivity, and electron mobility (100,000cm2 V-1 s -1) and quantum Hall effect etc. Since the discovery of graphene by British scientists Andrea Gem and Costiano Voseno in 2010 and won the Nobel Prize, graphene research has reached an unprecedented research climax, and more and more studies have found that graphene can be used for Field-effect transistors, high-frequency devices, super microprocessors and single-molecule detectors, etc. The three-dimensional structural materials composed of g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/02D01F9/12
Inventor 张迎晨彭松娜郭祺李梦科陈侃巨杨阳郭帅李垂宝赵明辉
Owner ZHONGYUAN ENGINEERING COLLEGE
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