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Preparation method of high-oriented carbon nanotube fiber

A technology of carbon nanotube fibers and carbon nanotubes, which is applied in the direction of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of cumbersome process and limit the application and development of carbon nanotube fibers, achieve good fiber orientation, improve final resistance Tensile strength, effect of improving orientation

Pending Publication Date: 2022-01-21
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have cumbersome processes and fine conditions, and the processed fibers are limited to a small number of samples, which limits the application and development of carbon nanotube fibers.

Method used

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  • Preparation method of high-oriented carbon nanotube fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of highly oriented carbon nanotube fibers, comprising the following steps:

[0041] An ethanol solution containing 2.0 wt.% ferrocene and an ethanol solution containing 0.5 wt.% thiophene were respectively prepared in an Erlenmeyer flask, and were uniformly mixed by ultrasonication. Use the liquid supply pump to feed the above-mentioned ferrocene and thiophene solution at 200ml min -1 The flow rate is injected into a horizontal tubular high-temperature furnace (SGL-1200 from Shanghai Experimental Electric Furnace Co., Ltd.), the furnace temperature is 1300°C, and the nitrogen flow rate is 100L h -1 , in a high temperature environment (1300°C), the catalyst (ferrocene), carbon source (ethanol) and growth promoter (thiophene) interact to continuously generate carbon nanotubes and self-assemble into carbon nanotube macroscopic cylinders, and then follow The carrier gas is continuously blown out of the furnace tube, and the inner diameter of the cerami...

Embodiment 2

[0051] A preparation method of highly oriented carbon nanotube fibers, comprising the following steps:

[0052] An ethanol solution containing 2.0 wt.% ferrocene and an ethanol solution containing 0.5 wt.% thiophene were respectively prepared in an Erlenmeyer flask, and were uniformly mixed by ultrasonication. Use the liquid supply pump to feed the above-mentioned ferrocene and thiophene solution at 200ml min -1 The flow rate is injected into a horizontal tubular high-temperature furnace, the furnace temperature is 1300°C, and the nitrogen flow rate is 100L h -1 , in a high temperature environment (1300°C), the catalyst (ferrocene), carbon source (ethanol) and growth promoter (thiophene) interact to continuously generate carbon nanotubes and self-assemble into carbon nanotube macroscopic cylinders, and then follow The carrier gas is continuously blown out of the furnace tube, and the inner diameter of the ceramic tube is 60mm.

[0053] The macroscopic cylinder of carbon nano...

Embodiment 3

[0058] A preparation method of highly oriented carbon nanotube fibers, comprising the following steps:

[0059] An ethanol solution containing 2.0 wt.% ferrocene and an ethanol solution containing 0.5 wt.% thiophene were respectively prepared in an Erlenmeyer flask, and were uniformly mixed by ultrasonication. Use the liquid supply pump to feed the above-mentioned ferrocene and thiophene solution at 200ml min -1 The flow rate is injected into a vertical tubular high-temperature furnace (SX2-1200 from Shanghai Experimental Electric Furnace Company), the furnace temperature is 1300°C, and the nitrogen flow rate is 100L h -1 , in a high temperature environment (1300°C), the catalyst (ferrocene), carbon source (ethanol) and growth promoter (thiophene) interact to continuously generate carbon nanotubes and self-assemble into carbon nanotube macroscopic cylinders, and then follow The carrier gas is continuously blown out of the furnace tube, and the inner diameter of the ceramic tu...

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Abstract

The invention discloses a preparation method of high-oriented carbon nanotube fiber. The method can be used for continuously and controllably stretching the carbon nanotube fiber; and the obtained final carbon nanotube fiber has good orientation and excellent mechanical properties, the tensile strength can reach 2.9 GPa, the tensile strength can reach 8.0 GPa after rolling densification, and the toughness is higher than that of carbon fiber. On the premise of not damaging the carbon nanotube fiber, the orientation of the carbon nanotube fiber is improved, and the final tensile strength of the fiber is further improved.

Description

technical field [0001] The invention belongs to the post-treatment technical field of carbon nanotube fibers, and in particular relates to a preparation method of highly oriented carbon nanotube fibers. Background technique [0002] Carbon nanotubes are seamless nanoscale tubes formed by single-layer or multi-layer graphene curled around the central axis at a certain helix angle, and the C of each layer is SP 2 hybridized to form a hexagonal planar cylindrical face. The perfect carbon-carbon bonding method endows carbon nanotubes with excellent mechanical and electrical properties. Studies have shown that its tensile strength exceeds 100GPa, its density is only one-sixth of that of steel, its Young's modulus can reach 1TPa, and its electrical conductivity can reach 10 8 S m -1 . With the in-depth exploration of the properties of carbon nanotubes, their application fields are becoming wider and wider. [0003] In order to apply carbon nanotubes in the engineering field, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12
CPCD01F9/1277
Inventor 王健农石强强詹航
Owner EAST CHINA UNIV OF SCI & TECH
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