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Processing method based on chemical vapor flow spinning method for preparing carbon nanotube fiber in inert atmosphere

A technology of carbon nanotube fiber and process method, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, etc. It can solve the problems of high-temperature hydrogen danger and unfavorable industrial production, etc., and achieve the effect of good orientation, large output and high purity

Active Publication Date: 2009-12-30
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Windle et al. have prepared high-performance continuous carbon nanotube fibers by using chemical vapor phase flow spinning method in hydrogen atmosphere with ethanol as carbon source and ferrocene as catalyst. However, high-temperature hydrogen is potentially dangerous, which is not conducive to industrial production. There is no report on the preparation of continuous carbon nanotube fibers by chemical vapor flow spinning in an inert atmosphere

Method used

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  • Processing method based on chemical vapor flow spinning method for preparing carbon nanotube fiber in inert atmosphere
  • Processing method based on chemical vapor flow spinning method for preparing carbon nanotube fiber in inert atmosphere
  • Processing method based on chemical vapor flow spinning method for preparing carbon nanotube fiber in inert atmosphere

Examples

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Effect test

Embodiment 1

[0014] Example 1: Prepare a mixed solution containing 18.75g ethanol, 0.6g ferrocene, 0.10g thiophene, and 0.1g water, and then ultrasonically disperse the mixed solution for 10min to obtain a yellow reaction solution. After the temperature is 1150°C, the reaction liquid is injected into the airflow of 200ml / min argon as the carrier gas at a rate of 7.0ml / h. The reaction is carried out in the synthesis reactor, and through the observation of the mirror behind the quartz tube, it is found that the cylindrical carbon tube fiber will be formed in the high temperature zone of the quartz tube. The cylindrical fiber is driven by argon to continuously 'flow' from the reaction zone and reach the quartz tube. Tube intersection. At this time, when the motor at the end of the quartz tube is turned, the cylindrical fiber can be wound continuously on the winding rod.

Embodiment 2

[0015] Example 2: Prepare a mixed solution containing 18.75g of acetone, 0.6g of ferrocene, and 0.10g of thiophene, and then ultrasonically disperse the mixed solution for 10 minutes to obtain a yellow reaction solution. After the temperature of the tubular resistance furnace rises to the synthesis temperature of 1150°C , the reaction solution is injected into the gas stream of 200ml / min argon as the carrier gas at a rate of 7.0ml / h, the reaction solution meets the flange (300°C) and rapidly vaporizes at high temperature, and enters the high-temperature synthesis reactor driven by the carrier gas The reaction is carried out, and the cylindrical carbon tube fibers formed in the high temperature zone of the quartz tube are observed through the mirror behind the quartz tube. The cylindrical fiber is driven by argon gas to continuously 'flow' from the reaction zone and reach the intersection of the quartz tube. At this time, when the motor at the end of the quartz tube is turned, t...

Embodiment 3

[0016] Example 3: Prepare a mixed solution containing 18.75g of acetone, 0.6g of ferrocene, and 0.10g of thiophene, and then ultrasonically disperse the mixed solution for 10 minutes to obtain a yellow reaction solution. After the temperature of the tubular resistance furnace rises to the synthesis temperature of 1150°C , the reaction solution is injected into the airflow of 200ml / min nitrogen as the carrier gas at a rate of 7.0ml / h, the reaction solution meets the flange (300°C) and rapidly vaporizes at high temperature, and enters the high-temperature synthesis reactor driven by the carrier gas to carry out Reaction, through the observation of the mirror behind the quartz tube, it is found that the cylindrical carbon tube fiber will be formed in the high temperature zone of the quartz tube, and the cylindrical fiber is driven by argon to continuously 'flow' from the reaction zone and reach the intersection of the quartz tube. At this time, when the motor at the end of the qua...

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Abstract

The invention relates to a processing method based on chemical vapor flow spinning method for preparing carbon nanotube fiber in inert atmosphere. The method comprises the following steps: using ethanol, acetone, ethylene glycol, xylol or n-hexane as carbon source, using ferrocene, ferric chloride, nickel oxalate or cobalt acetate as catalyst, using thiophene as promoter, and using argon, nitrogen and helium as carrier gas to prepare continuous carbon nanotube fiber within the temperature range of 1100-1300 DEG C and with the flow rate of carrier gas being 50-500sccm. The invention has the advantage that inert gas is used as carrier gas in the preparation technology, thus being beneficial for large-scale preparation of carbon nanotube fiber.

Description

technical field [0001] The invention relates to a process method for preparing carbon nanotube fibers in an inert atmosphere based on a chemical vapor phase flow spinning method, and belongs to the technical field of carbon nanotube fiber preparation. Background technique [0002] Carbon nanotubes (CNTs) have excellent mechanical and multifunctional properties such as high strength, high electrical conductivity, electrochemical reaction, gas sensitivity, and electric field emission. Fibers composed of carbon tubes have potential mechanical and multifunctional properties. next-generation materials. Carbon tube fibers have important application prospects in the preparation of high-performance composite materials, high-conductivity materials, supercapacitors, artificial muscles and smart textiles. At present, Windle et al. have prepared high-performance continuous carbon nanotube fibers by using chemical vapor phase flow spinning method in hydrogen atmosphere with ethanol as c...

Claims

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Application Information

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IPC IPC(8): D01F9/12
Inventor 李亚利王睿侯峰冯建民钟小华
Owner TIANJIN UNIV
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