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Continuous macroscopic graphene nanobelt fiber and preparation method thereof

A graphene nanoribbon and fiber technology, applied in the direction of graphene, nanocarbon, fiber chemical characteristics, etc., can solve the problems such as the unrealized macroscopic graphene nanoribbon fiber, and achieve high strength, high conductivity, and simple preparation process. Effect

Active Publication Date: 2018-11-06
QUJING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the graphene nanoribbons prepared by the above method are all dispersed and free
Preparation of continuous macroscopic graphene nanoribbon fibers has not yet been realized

Method used

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  • Continuous macroscopic graphene nanobelt fiber and preparation method thereof
  • Continuous macroscopic graphene nanobelt fiber and preparation method thereof
  • Continuous macroscopic graphene nanobelt fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh and mix ethanol, ferrocene, and thiophene according to the mass ratio of 150:3:1, then add deionized water, and mix well by ultrasonication for 30 min to obtain a uniform reaction liquid, wherein the mass fraction of water in the reaction liquid is 25% . The reaction liquid was injected into the tubular reaction furnace with 1000 sccm hydrogen carrier gas flow at a rate of 8 mL / h with a micro-syringe pump. The temperature in the reaction zone was 1150 °C. Graphene nanoribbons grew and assembled in the reaction zone to form filamentous aggregates. , moved to the end of the reaction furnace driven by the hydrogen flow, the graphene nanoribbon aggregates were pulled out from the reaction furnace, densely shrunk by water, and wound on the spinning shaft at a spinning speed of 4 m / min to obtain a continuous macroscopic Graphene nanoribbon fibers.

[0021] The continuous macroscopic graphene nanoribbon fibers prepared by the above steps and conditions can reach hundred...

Embodiment 2

[0023] Change the content of deionized water to 15%, and other experimental processes and conditions are the same as in Example 1.

[0024] Specifically: weigh and mix ethanol, ferrocene, and thiophene according to the mass ratio of 150:3:1, then add deionized water, and mix evenly by ultrasonication for 30 minutes to obtain a uniform reaction solution. The mass fraction of water in the reaction solution is 15%. The reaction liquid was injected into the tubular reaction furnace with 1000 sccm hydrogen carrier gas flow at a rate of 8 mL / h with a micro-syringe pump. The temperature in the reaction zone was 1150 °C. Graphene nanoribbons grew and assembled in the reaction zone to form filamentous aggregates. , moved to the end of the reaction furnace driven by the hydrogen flow, the graphene nanoribbon aggregates were pulled out from the reaction furnace, densely shrunk by water, and wound on the spinning shaft at a spinning speed of 4 m / min to obtain a continuous macroscopic Gra...

Embodiment 3

[0027] Change the content of deionized water to 10%, and other experimental procedures and conditions are the same as in Example 1.

[0028] Specifically: weigh and mix ethanol, ferrocene, and thiophene according to the mass ratio of 150:3:1, then add deionized water, and mix evenly by ultrasonication for 30 minutes to obtain a uniform reaction solution. The mass fraction of water in the reaction solution is 10%. The reaction liquid was injected into the tubular reaction furnace with 1000 sccm hydrogen carrier gas flow at a rate of 8 mL / h using a micro-syringe pump. The temperature in the reaction zone was 1150 °C. The reaction liquid cracked and grew in the reaction zone and assembled to form cylindrical aggregates. Driven by the hydrogen flow, it moves to the end of the reactor, pulls the aggregates out of the reactor, shrinks them densely with water, and winds them on the spinning shaft at a spinning speed of 4 m / min to produce a continuous fiber product.

[0029]The produ...

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Abstract

The invention discloses a continuous macroscopic graphene nanobelt fiber and a preparation method thereof. A reaction liquid with high water content is taken as a raw material, and the continuous macroscopic graphene nanobelt fiber is prepared by using the interference and cutting effects of water molecules on the growth assembly of a carbon nano tube at high temperature through a chemical vapor deposition method. In the key technology of the preparation method, the mass fraction of deionized water inside the reaction liquid is controlled within the range of 15% to 40%, preferable 20% to 35%.The graphene nanobelt fiber prepared by using the preparation method is continuous in uniformity, high in purity and high in quality. The fiber also has light weight, high strength, high conductivityand excellent flexibility, and a novel macroscopic fiber material is provided for developing flexible wearable electron devices. Moreover, the preparation method is a one-step dry spinning method, thepreparation technology is simple and easy to regulate and control, continuous preparation can be realized, and large-scale production can be realized.

Description

technical field [0001] The invention relates to a continuous macroscopic graphene nanoribbon fiber and a preparation method thereof, belonging to the technical field of carbon nanomaterials and preparation thereof. Background technique [0002] Since graphene was discovered in 2004, with its excellent mechanical (theoretical fracture strength 1 TPa), electrical (theoretical electron mobility is 10 6 cm 2 • V -1 •s -1 ), thermal (theoretical thermal conductivity 5000 W·m -1 •K -1 ), optics (monolayer visible light absorption is only 2.3%) and other properties have attracted much attention. Graphene nanoribbons refer to narrow strips of graphene materials with a width of nanoscale and a certain aspect ratio. Graphene nanoribbons not only have all the structural and functional properties of graphene, but also show unique electron transport properties due to the limitation of electron transport in the width direction of the nanoscale. Its electrical properties are semico...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/186D01F9/127
CPCD01F9/1277C01B32/186C01B2204/04C01B2204/26C01B2204/32C01B2204/20C01B2204/22
Inventor 康艳茹李哲徐坤何禧佳曹义明李亚利
Owner QUJING NORMAL UNIV
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