Preparation method of graphene nanoribbon in situ toughened nano carbon fiber

A technology of graphene nanobelts and nanocarbon fibers, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of high energy consumption, complex process, high melt spinning temperature, etc., and achieve low energy consumption, simple process and few processes Effect

Active Publication Date: 2017-04-19
重庆锦添翼新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When using this method to prepare composite fibers, the temperature required for melt spinning is high, and the energy consumption is high. At the same time, carbon nanotubes need to be modified to improve the interfacial compatibility between lignin and carbon nanotubes, and the process is complicated.

Method used

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  • Preparation method of graphene nanoribbon in situ toughened nano carbon fiber

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Effect test

Embodiment 1

[0026] A preparation method for in-situ toughened carbon nanofibers of graphite graphene nanobelts, the specific steps are as follows:

[0027] ((1) Preparation of carbon nanofiber precursor

[0028] Preparation of carbon nanofiber precursor solution A, the concentration of polymer in the solution A is 60g / L; the solution A is stirred, the stirring time is 8h, and the stirring temperature is 60°C to obtain a uniform solution A.

[0029] (2) Dispersion of graphene nanoribbons

[0030] The aqueous solution B of preparation tensio-active agent, the concentration of tensio-active agent in the described solution B is 0.5g / L; Graphene nanoribbon is dispersed in solution B, prepares solution C, the graphene nanoribbon in above-mentioned solution C The concentration is 0.2g / L; ultrasonically oscillate the solution C, the ultrasonic power is 200W, and the ultrasonic time is 10min to obtain a uniform solution C; the solution C is frozen, the freezing temperature is -20°C, and the freez...

Embodiment 2

[0036] A preparation method for in-situ toughened carbon nanofibers of graphite graphene nanobelts, the specific steps are as follows:

[0037] (1) Preparation of carbon nanofiber precursor

[0038] Preparation of carbon nanofiber precursor solution A, the concentration of polymer in the solution A is 200g / L; the solution A is stirred for 8 hours and the stirring temperature is 25°C to obtain a uniform solution A.

[0039] (2) Dispersion of graphene nanoribbons

[0040] Prepare the aqueous solution B of surfactant, the concentration of surfactant in the solution B is 2g / L; Graphene nanobelt is dispersed in solution B, prepares solution C, the concentration of graphene nanobelt in above-mentioned solution C was 0.4g / L; the solution C was ultrasonically oscillated, the ultrasonic power was 400W, the ultrasonic time was 30min, and a uniform solution C was obtained; the solution C was frozen, the freezing temperature was -40°C, and the freezing time was 6h; The solution C was free...

Embodiment 3

[0046] A preparation method for in-situ toughened carbon nanofibers of graphite graphene nanobelts, the specific steps are as follows:

[0047] (1) Preparation of carbon nanofiber precursor

[0048] Preparation of carbon nanofiber precursor solution A, the concentration of polymer in the solution A is 130g / L; the solution A is stirred for 28 hours and the stirring temperature is 42°C to obtain a uniform solution A.

[0049] (2) Dispersion of graphene nanoribbons

[0050] The aqueous solution B of preparation tensio-active agent, the concentration of tensio-active agent in the described solution B is 1.25g / L; Graphene nanoribbon is dispersed in solution B, prepares solution C, the graphene nanoribbon in above-mentioned solution C The concentration is 0.3g / L; ultrasonically oscillate the solution C, the ultrasonic power is 300W, and the ultrasonic time is 20min to obtain a uniform solution C; the solution C is frozen, the freezing temperature is -30°C, and the freezing time is ...

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Abstract

Belonging to the technical field of nano carbon fiber composite materials, the invention relates to a preparation method of a graphene nanoribbon in situ toughened nano carbon fiber. The method includes: firstly preparing an easily dispersible graphene nanoribbon, taking a macromoleclar polymer as the raw material, preparing a nano carbon fiber precursor solution, dispersing the graphene nanoribbon in the nano carbon fiber precursor solution, and conducting stirring dispersion, electrostatic spinning and heat treatment to obtain a graphene nanoribbon in situ toughened nano carbon fiber product. The method has the advantages of simple process, convenient operation, is conducive to realizing large-scale production, is convenient for popularization and application, and is low in cost. As the edge of the graphene nanoribbon and nano carbon fiber have in situ covalent interaction, the graphene nanoribbon in situ toughened nano carbon fiber prepared by the method has good electrical conductivity, good thermal conductivity and high mechanical strength, and can be widely applied to composite materials, conductive agents, heat conduction agents and mechanical enhancers, etc.

Description

technical field [0001] The invention belongs to the technical field of nano-carbon fiber composite materials, and in particular relates to a preparation method of in-situ toughened nano-carbon fibers with graphene nanobelts in the technical field of carbon fiber composite materials. Background technique [0002] As a high-performance carbon fiber material, carbon nanofiber has superior mechanical properties, heat resistance and corrosion resistance. Different qualities of nanofiber precursors play a decisive role in the performance of the final carbon nanofibers. Polyacrylonitrile, as a common precursor material for carbon fiber, is the most widely used raw material for commercial carbon fiber. The nano-carbon fiber prepared from polyacrylonitrile has high molecular orientation, high melting point and high carbon fiber yield. After preheating at low temperature, polyacrylonitrile-based fibers can form a molecular structure with good thermal stability and high orientation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/21D01F9/22
CPCD01F9/21D01F9/225
Inventor 李新禄赵昱颉赵奚誉张艳艳粟泽龙
Owner 重庆锦添翼新能源科技有限公司
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