Super stretchable high-conductivity graphene fiber and preparation method thereof

A graphene fiber, highly conductive technology, applied in the chemical characteristics of fibers, textiles and papermaking, etc., can solve problems such as limited industrial application, brittleness, etc., to overcome poor stretchability, easy preparation, length and diameter can be adjusted. control effect

Active Publication Date: 2016-05-04
ZHEJIANG TANGUSHANGXI MATERIAL SCI & TECH
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Problems solved by technology

For the first time, Gao Chao's research group prepared graphene fibers with an ordered structure by wet spinning assembly method based on graphene oxide liquid crystals, but the elongation at break was only 2%-4%, which was brittle and limited industrial applications. Therefore, how to prepare graphene fibers with high elongation at break has become a major challenge in today's science and technology.

Method used

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  • Super stretchable high-conductivity graphene fiber and preparation method thereof
  • Super stretchable high-conductivity graphene fiber and preparation method thereof
  • Super stretchable high-conductivity graphene fiber and preparation method thereof

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Embodiment Construction

[0020] Such as figure 1 Shown, a kind of super-stretchable highly conductive graphene fiber of the present invention, described fiber is the double Archimedes spiral structure (structure can refer to bibliography BiscrollingNanotubeSheetsandFunctionalGuestsintoYarns) that is made up of graphene sheet layer, and interlamellar spacing is 0.336 nm, the carbon-to-oxygen ratio of the fiber is 57.87, and the XRD diffraction peak position is 26.5°.

[0021] A kind of preparation method of the super-stretchable highly conductive graphene fiber of the present invention, the steps are as follows:

[0022] (1) preparing a graphene oxide film with a thickness of 0.5 to 50 μm;

[0023] (2) The graphene oxide film with a thickness of 0.5 to 50 μm prepared in step 1 is heat-treated in the manner shown in Table 1 to Table 3 to obtain a graphene film; under high temperature treatment, the carbon-to-oxygen ratio of graphene increases from 10.19 to 57.87 (tested by X-ray photoelectron spectros...

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Abstract

The invention discloses a super stretchable high-conductivity graphene fiber and a preparation method thereof. The method comprises the steps that the temperature of a graphene oxide film is firstly raised to 500 DEG C to 800 DEG C at the rate of 0.1 DEG C/min to 1 DEG C/min, and heat preservation is carried out for 0.5 h to 2 h; then the temperature is raised to 1,000 DEG C to 1,300 DEG C at the rate of 1 DEG C/min to 3 DEG C/min, and heat preservation is carried out for 0.5 h to 3 h; the temperature is raised to 2,000 DEG C to 3,000 DEG C at the rate of 5 DEG C/min to 8 DEG C/min, and heat preservation is carried out for 0.5 h to 4 h; the graphene oxide film is wound, the super stretchable high-conductivity graphene fiber is obtained, the elongation at break ranges from 30% to 220%, and the conductivity is 1-2.36*106 S/m. The preparation method is simple in process, graphene fibers of different diameters and lengths can be obtained, the problem that a traditional graphene fiber is broken and is prone to be pulled to be broken is solved, the conductivity is excellent, and industrial prospects are achieved.

Description

technical field [0001] The invention relates to a preparation method of graphene fibers, in particular to a super stretchable and highly conductive graphene fiber and a preparation method thereof. Background technique [0002] In 2004, Professors Andre Kim and Konstantin Novoselov of the University of Manchester in the UK separated two-dimensional graphene crystals for the first time by micromechanical exfoliation, which opened up the world's research on graphene as a material. The two also won the 2010 Nobel Prize in Physics for their pioneering experiments on two-dimensional graphene materials. Graphene material has excellent mechanical properties. The tensile strength of graphene can reach 180GPa according to theoretical calculations. It has ultra-high electron mobility at room temperature. Graphene also has ultra-high thermal conductivity. Ideal thermal interface material. Graphene has a conjugated structure and exhibits rich chemical properties. It can be modified on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12
CPCD01F9/12
Inventor 高超王冉孙海燕韩燚
Owner ZHEJIANG TANGUSHANGXI MATERIAL SCI & TECH
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