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Continuous preparation of carbon nanotube macroscopic body, and film forming method and apparatus

A carbon nanotube film and technology of carbon nanotubes, applied in the field of nanomaterials, can solve the problems that cannot meet the needs of industrialization, the size of the film is limited, and it is unfavorable for industrial production.

Inactive Publication Date: 2016-01-27
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the width of the film is limited by the diameter of the furnace tube, the size of the prepared film is limited, which cannot meet the needs of industrialization
The closed system of high-temperature hydrogen gas is potentially dangerous, which is not conducive to industrial production

Method used

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  • Continuous preparation of carbon nanotube macroscopic body, and film forming method and apparatus
  • Continuous preparation of carbon nanotube macroscopic body, and film forming method and apparatus
  • Continuous preparation of carbon nanotube macroscopic body, and film forming method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Using xylene as carbon source, ferrocene as catalyst, and thiophene as growth promoter, the mass fractions were 99.01%, 0.37%, and 0.62%, respectively, to prepare the reaction solution. The reactor is a high-temperature tube furnace, and the furnace tube is a corundum tube with a diameter of 10 mm. Raise the temperature of the reaction furnace to 1200°C, and feed nitrogen gas with a flow rate of 10 sccm. After the air in the furnace is exhausted, use an infusion pump to press the reaction solution into the quartz tube at a speed of 0.1 sccm, and enter the reaction furnace with nitrogen after being vaporized. , a high-temperature catalytic cracking reaction occurs, and carbon nanotubes are prepared and assembled into a cylindrical carbon nanotube macroscopic body, which is continuously blown out of the furnace tube with the gas at a speed of 1.2m / min. The macroscopic tube is gray, translucent, and has a diameter comparable to that of the furnace tube. For the spinning p...

Embodiment 2

[0032] The preparation process of carbon tubes and macroscopic tubes is the same as in Example 1, using n-hexane as the carbon source, ferrocene as the catalyst, and thiophene as the growth promoter, and the mass fractions are 99.01%, 0.37%, and 0.62% respectively to prepare the reaction solution. The reactor is a high-temperature tube furnace, and the furnace tube is a corundum tube with a diameter of 30 mm. Raise the temperature of the reaction furnace to 1800°C, and feed argon gas with a flow rate of 300 sccm. After the air in the furnace is exhausted, use an infusion pump to press the reaction solution into the quartz tube at a speed of 2 sccm, and enter the reaction with the argon gas after vaporization In the furnace, a high-temperature catalytic cracking reaction occurs, and carbon nanotubes are prepared and assembled into a cylindrical carbon nanotube macroscopic body, which is continuously blown out from the furnace tube at a speed of 50m / min with the gas. The macrosc...

Embodiment 3

[0036] The carbon tube macroscopic tube preparation process is the same as in Example 1, with n-hexane and acetone as the mixed carbon source, ferrocene as the catalyst, and thiophene as the growth promoter, and the mass fractions are 99.01%, 0.37%, and 0.62% respectively to prepare the reaction solution. The reactor is a high-temperature tube furnace, and the furnace tube is a corundum tube with a diameter of 60 mm. Raise the temperature of the reaction furnace to 1500°C, and feed helium gas with a flow rate of 1000 sccm. After the air in the furnace is exhausted, use an infusion pump to press the reaction solution into the quartz tube at a speed of 10 sccm, and enter the reaction with the helium after gasification In the furnace, a high-temperature catalytic cracking reaction occurs, and carbon nanotubes are prepared and assembled into a cylindrical carbon nanotube macroscopic body, which is continuously blown out from the furnace tube at a speed of 4.2m / min with the gas. Th...

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Abstract

The invention discloses a continuous preparation method for a cylindrical carbon nanotube macroscopic body, and a method and apparatus for preparing a pure carbon nanotube film in an opened atmosphere system based on the macroscopic body, and belongs to the technical field of nanometer materials. The method comprises the following technological steps: dissolving ferrocene and thiophene in a hdydrocarbon composed of carbon and hydrogen elements, or an alcohol, ketone or carboxylic acid compound composed of carbon, hydrogen and oxygen elements, or a mixed solution of the hydrocarbon and the alcohol, ketone or carboxylic acid compound, bringing the above mixed solution into a high-temperature tubular furnace by an inert gas, performing catalytic cracking in the furnace tube, synthesizing the carbon tube and forming the cylindrical carbon nanotube macroscopic body through combination, and continuously blowing out by the furnace tube. A roller for spinning a film is put at the furnace tail, the roller is paved with a substrate film wetted by a solidification liquid, and thus the cylindrical carbon nanotube macroscopic body is orderly wound around the substrate film, and the film is formed through shrinkage. The substrate film is reserved or removed according to needs. The multifunctional carbon nanotube film is prepared in the opened system. Equipment is simple, and industrialized large-scale production can be realized.

Description

technical field [0001] The invention relates to a continuous preparation of a tubular carbon nanotube macrobody, and a method and device for preparing a carbon nanotube film in an open atmosphere system based on the macrobody, belonging to the technical field of nanomaterials. Background technique [0002] Type the technical field description paragraph here. A carbon tube macrobody refers to an aggregate of carbon nanotubes that reach a macroscopic scale in at least one dimension. It can be divided into one-dimensional carbon nanotube fiber, two-dimensional carbon nanotube film and three-dimensional carbon nanotube block. In recent years, the research on carbon nanotubes has been developed rapidly. It is a technical difficulty to maintain the excellent properties of carbon nanotubes at the nanoscale at the macroscale. Carbon tube film is assembled from carbon tubes through a specific process method. It is a high-performance film with light weight, high strength, high el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 王健农陈云
Owner EAST CHINA UNIV OF SCI & TECH
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