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Graphene fiber and method of manufacturing the same

A graphene fiber and graphene sheet technology, applied in the direction of graphene, fiber processing, fiber chemical characteristics, etc., can solve the problems of slow deposition speed, reduce time and cost, reduce chemical toxicity, and improve safety.

Active Publication Date: 2015-03-18
北京烯创科技有限合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The aforementioned patent case is a method for preparing graphene fibers from small to large, but its disadvantages are that the deposition rate is slow and certain toxic substances need to be used in the CVD process

Method used

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  • Graphene fiber and method of manufacturing the same
  • Graphene fiber and method of manufacturing the same
  • Graphene fiber and method of manufacturing the same

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Embodiment Construction

[0020] The embodiments of the present invention will be described in more detail below with reference to the drawings and reference numbers, so that those skilled in the art can implement them with reference to the description.

[0021] refer to figure 1 , is a schematic diagram of the structure of the graphene fiber of the present invention. Such as figure 1 As shown, the graphene fiber 1 of the present invention comprises a plurality of graphene oxide sheets 10, the thickness of the graphene sheets 10 is less than 3 nm, and cross-linked and stacked around an axis A, wherein the diameter D of the graphene fiber 1 is less than 100 μm, the ratio of length H to diameter D (H / D) is greater than 10, and the carbon-oxygen element ratio of the graphene fiber is determined to be greater than 5.

[0022] refer to figure 2 , is a flow chart of the preparation method of the graphene fiber of the present invention. Such as figure 2 As shown, the preparation method S1 of the graphe...

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Abstract

The present invention discloses a graphene fiber and a method of manufacturing the same. The graphene fiber is manufactured by oxidizing graphite, dispersing, spinning, drying and heat treatment, and has a diameter less than 100 μm, a ratio of length to diameter greater than 10, and a ratio of carbon to oxygen greater than 5. The graphene fiber is formed of a plurality of graphene sheets, which envelop an axis and are coaxially stacked one by one from the axis. The thickness of the graphene sheet is less than 3 nm, and chemical bonds are formed to tightly bond the graphene sheets to exhibit excellent mechanical and thermally / electrically conductive properties. The method of the present invention is implemented by simple steps so as to greatly reduce poisonous chemicals possibly generated in the manufacturing environment, thereby improving the safety of manufacturing and reducing the whole processing time and cost.

Description

technical field [0001] The invention relates to a graphene fiber and a preparation method of the graphene fiber. Background technique [0002] Carbon fiber is a fiber material with both chemical inertness and semiconductor properties, and has excellent properties such as light weight, high strength, and high elastic modulus. High-performance fibrous carbon materials are not only widely used in aerospace, national defense and military industries, but also have broad application space in the automotive industry, wind power blades, nuclear power, and leisure sports products. European patent EP1696046B1 discloses a metal carbon fiber composite material prepared by pulse current sintering method. The composite material has excellent thermal conductivity and can be applied to the heat dissipation mechanism of electronic equipment or power modules. The US patent case US2013 / 0084455A1 discloses a method for preparing carbon fibers using polyolefin fibers as precursors. In this case...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12D01F11/16
CPCC01B31/0484C01B31/0438C01B32/182C01B32/198D01D5/0046D01D5/06D01F9/12Y10T428/2918
Inventor 吴以舜谢承佑陈静茹谢淑玲
Owner 北京烯创科技有限合伙企业(有限合伙)
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