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Carbon nano tube fiber-graphene composite material and preparation method of the same

A carbon nanotube fiber, composite material technology, applied in fiber processing, textiles and papermaking, etc., can solve the problem of material performance degradation, and achieve the effect of effective adjustment of affinity and hydrophobicity

Inactive Publication Date: 2013-09-18
SUZHOU CREATIVE CARBON NANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] One of the purposes of the present invention is to provide a method for preparing a carbon nanotube fiber-graphene composite material, which overcomes the problem of material performance degradation of carbon nanotube fibers in fields such as photoelectric applications in the prior art

Method used

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  • Carbon nano tube fiber-graphene composite material and preparation method of the same
  • Carbon nano tube fiber-graphene composite material and preparation method of the same
  • Carbon nano tube fiber-graphene composite material and preparation method of the same

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preparation example Construction

[0036] like figure 1 Shown is the schematic flow sheet of this embodiment, in this embodiment, the preparation method of carbon nanotube fiber-graphene composite material comprises the following steps:

[0037] a. Prepare carbon nanotube fibers by array spinning method, solution spinning method or chemical vapor deposition spinning method, and at the same time, use solution wetting to modify carbon nanotube fibers during the preparation process. The above solution can be ethanol, or PVA / H 2 O solution, or PVA / dimethylsulfoxide solution, or polydiallyldimethylammonium chloride.

[0038] b. Provide the prepared graphene, place the graphene in an aqueous solution, and form a uniformly dispersed graphene dispersion under the action of ultrasound.

[0039] c. Add the dispersant dropwise to the graphene dispersion, and stir evenly.

[0040] d. fully contacting the prepared carbon nanotube fiber with the graphene dispersion, so that the graphene is coated on the surface of the car...

Embodiment 1

[0052] This example shows figure 1 The preparation process of the composite material of the present invention is prepared by the spraying method shown in route A.

[0053] The carbon nanotube fiber is prepared by the carbon nanotube array spinning method. During the spinning process, the carbon nanotube fibers were shrunk by soaking with ethanol.

[0054] Graphene is provided, and it is ultrasonically dispersed in an aqueous solution with a dispersion concentration of 0.001 g / L. Then, a small amount of dispersant N,N-dimethylformamide (DMF) was added dropwise into the dispersion liquid, the volume percentage was 1 vol%, and stirred and mixed evenly, so as to prepare the graphene dispersion liquid.

[0055] The carbon nanotube fibers are arranged side by side, and then the graphene dispersion is sprayed on the surface of the carbon nanotube fibers by a high-pressure spraying method. During the spraying process, keep the carbon nanotube fiber slowly rotating along its axis to...

Embodiment 2

[0058] This example shows figure 1 The preparation process of the composite material of the present invention is prepared in the soaking mode shown in route B.

[0059] The carbon nanotube fiber is prepared by the carbon nanotube array spinning method. During the spinning process, the carbon nanotube fibers were shrunk by soaking with ethanol.

[0060] Graphene is provided, and it is ultrasonically dispersed in an aqueous solution with a dispersion concentration of 0.05 g / L. Then, a small amount of dispersant N,N-dimethylformamide (DMF) was added dropwise into the dispersion liquid, the volume percentage was 1 vol%, and stirred and mixed evenly, so as to prepare the graphene dispersion liquid.

[0061] After immersing the carbon nanotube fiber in the graphene dispersion for 1 h, take it out, rinse it with water for 3 times, then continue soaking in the graphene dispersion for 1 h, and then wash it with water.

[0062] The prepared carbon nanotube fiber coated with graphene ...

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Abstract

The invention discloses a preparation method of carbon nano tube fiber-graphene composite material. The method comprises the following steps of: a, preparing carbon nano tube fiber, meanwhile, wetting and modifying the carbon nano tube fiber by solution; b, providing graphene, adding the graphene into water solution, forming uniformly dispersed graphene dispersion liquid under the action of ultrasonic wave; c, dropping a dispersing agent into the graphene dispersion liquid, and stirring uniformly; d, fully contacting the carbon nano tube fiber with the graphene dispersion liquid so as to coat the surface of the carbon nano tube fiber with the graphene; e, then, drying the carbon nano tube fiber coated with the graphene, thereby obtaining the composite material. The carbon nano tube fiber-graphene composite material provided by the invention keeps the mechanical property and the electrical property of the carbon nano tube fiber, and endows the surface of the carbon nano tube fiber with lots of functional modification groups, such as carboxyl, hydroxyl and epoxy group, so that the surface hydrophilicity of the carbon nano tube fiber can be regulated effectively.

Description

technical field [0001] The invention relates to a composite material, in particular to a carbon nanotube fiber-graphene composite material and a preparation method thereof. Background technique [0002] Carbon nanotube fiber is the most important macroscopic form assembled by a large number of carbon nanotubes. Since Tsinghua University researchers first extracted carbon nanotube fibers from carbon nanotube arrays in 2002, carbon nanotube fibers have rapidly developed into a very dynamic research direction. Because of its excellent mechanical, electrical and thermal properties, it has shown great application potential in the fields of aerospace, bulletproof equipment, sports equipment and other composite materials. [0003] The currently developed carbon nanotube fiber preparation methods mainly include array spinning method, solution spinning method and floating chemical vapor deposition (CVD) spinning method. The array spinning method is based on the spinnable carbon nan...

Claims

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Application Information

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IPC IPC(8): D06M11/74
Inventor 李清文孟凡成张骁骅
Owner SUZHOU CREATIVE CARBON NANOTECH
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