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High-performance carbon nano/MXene composite fiber and preparation method thereof

A composite fiber, carbon nanotechnology, applied in fiber processing, conductive/antistatic filament manufacturing, wet spinning, etc., can solve the problems of high electrical conductivity, mechanical strength, and high metal content, achieve high electrical conductivity, and simple process operation. , the effect of high productivity

Inactive Publication Date: 2021-03-09
YANTAI TAYHO ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention discloses a process method capable of rapid continuous and easy scale-up, which solves the problem of high metal content in the existing MXene-based fiber materials, and at the same time ensures that the obtained materials have high electrical conductivity and high mechanical strength

Method used

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  • High-performance carbon nano/MXene composite fiber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Carbon nanotube / MXene composite fiber

[0049] Add 10 g of LiF into 200 mL of HCl solution with a concentration of 9 mol / L, stir at 35° C. for 30 min to fully dissolve it, and obtain an etching solution. Then, 10 g of Ti3AlC2 powder with a size of 2 μm was added to the etching solution, and stirred for 24 hours, so that Al was etched away. Finally, add deionized water to wash until the solution gradually changes from acidic to neutral (pH is 6), so as to obtain a two-dimensional lamellar MXene aqueous dispersion. The two-dimensional lamellar MXene aqueous dispersion is concentrated by suction filtration to make it The concentration is 25mg / mL.

[0050] Add 1 g of carbon nanotube powder (2 layers, 0.5 μm in length) to 200 mL of MXene dispersion so that the mass ratio of Ti3AlC2 to carbon nanotubes is 5:1. Then add sodium lauryl sulfate dispersing agent to make its concentration 0.5wt% of the obtained carbon nanotube / MXene dispersion slurry, and stir for 1 h to obtain c...

Embodiment 2

[0054] Carbon nanotube / MXene composite fiber

[0055] Add 10 g of LiF into 200 mL of HCl solution with a concentration of 9 mol / L, stir at 35° C. for 30 min to fully dissolve it, and obtain an etching solution. Then, 10 g of Ti2AlC powder with a size of 3 μm was added to the etching solution, and stirred for 24 hours, so that Al was etched away. Finally, add deionized water to wash until the solution gradually changes from acidic to neutral (pH is 6), so as to obtain a two-dimensional lamellar MXene aqueous dispersion. The two-dimensional lamellar MXene aqueous dispersion is concentrated by suction filtration to make it The concentration is 20mg / mL.

[0056] Add 1 g of carbon nanotube powder (the number of layers is a single layer and the length is 0.8 μm) to 400 mL of MXene dispersion, so that the mass ratio of Ti3AlC2 to carbon nanotubes is 8:1. Then add sodium dodecylbenzene sulfonate dispersing agent so that its concentration is 1.0wt% of the obtained carbon nanotube / MXe...

Embodiment 3

[0060] Graphene / MXene composite fiber

[0061] Add 10 g of LiF into 200 mL of HCl solution with a concentration of 9 mol / L, stir at 35° C. for 30 min to fully dissolve it, and obtain an etching solution. Then, 10 g of Ti3AlC2 powder with a size of 2 μm was added to the etching solution, and stirred for 24 hours, so that Al was etched away. Finally, add deionized water to wash until the solution gradually changes from acidic to neutral (pH is 6), so as to obtain a two-dimensional lamellar MXene aqueous dispersion. The two-dimensional lamellar MXene aqueous dispersion is concentrated by suction filtration to make it The concentration is 25mg / mL.

[0062] Add 1 g of graphene powder (2 layers, 0.3 μm in size) into 200 mL of MXene dispersion so that the mass ratio of Ti3AlC2 to graphene is 5:1. Then add sodium lauryl sulfate dispersion aid, make its concentration be 1.5wt% of the obtained carbon nanometer / MXene dispersion slurry, stir 1h, obtain graphene / MXene dispersion slurry. ...

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Abstract

The invention discloses a high-performance carbon nano / MXene composite fiber and a preparation method thereof, and belongs to the technical field of novel functional fiber materials. The preparation method comprises the following steps of dispersing MXene powder without a metal aluminum component in water to obtain a two-dimensional lamellar MXene aqueous dispersion liquid, and uniformly dispersing a carbon nano material in the two-dimensional lamellar MXene aqueous dispersion liquid to obtain carbon nano / MXene dispersion slurry; and carrying out wet spinning on the obtained carbon nano / MXenedispersion slurry to obtain the high-performance carbon nano / MXene composite fiber. The invention discloses the carbon nano / MXene composite fiber which can be simply, rapidly, continuously and easilyprepared on a large scale, and the carbon nano / MXene composite fiber with high conductivity and high mechanical strength can be obtained by the preparation method, so that the obtained material can bewell applied to a flexible electrode material.

Description

technical field [0001] The invention belongs to the technical field of novel functional fiber materials, and relates to a high-performance carbon nanometer / MXene composite fiber and a preparation method thereof. Background technique [0002] In recent years, carbon nanomaterials have attracted extensive attention from researchers at home and abroad due to their light weight, flexibility, bendability, stretchability, and weavability. It is one of the core materials for building flexible electronic devices. A practical method for macroscopically assembling carbon nanomaterials into one-dimensional fibers is wet spinning. Fibers are formed through the gelation of the spinning solution and the solidification of the coagulation bath, which can achieve continuous large-scale preparation. At present, people have continuously prepared highly oriented carbon nanotube fibers, graphene fibers, etc. by wet spinning. However, in terms of mechanical strength and electrical conductivity, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/06D01D5/28D01D10/04D01D10/06D01F1/09D01F9/08
CPCD01D5/06D01D10/06D01D10/0436D01D5/28D01F9/08D01F1/09
Inventor 马千里吴景霞周绪波王兵杰
Owner YANTAI TAYHO ADVANCED MATERIALS CO LTD
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