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Method for batch production of carbon nanotube fibers

A carbon nanotube fiber, mass production technology, applied in the direction of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of increasing production costs, and achieve the effects of reducing production costs and energy consumption, reducing production costs, and low fiber diameter

Active Publication Date: 2020-01-14
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN103628183A discloses a method of multi-furnaces in series, multi-furnaces simultaneously and stably spinning large-scale production of carbon nanotube fibers, but the preparation method uses multi-furnaces in series, which greatly increases the production cost

Method used

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  • Method for batch production of carbon nanotube fibers
  • Method for batch production of carbon nanotube fibers
  • Method for batch production of carbon nanotube fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0036] use as figure 2 The experimental device is a high-temperature reactor using a large quartz tube with three small quartz tubes inside. Carbon nanotube fibers were prepared with ethanol as carbon source, ferrocene as catalyst, thiophene as accelerator, and hydrogen as carrier gas.

[0037] 50g of ethanol, 0.50g of ferrocene, 0.28g of thiophene, and 1g of water were ultrasonically dispersed and mixed, put into a micro syringe, and installed at one end of the reactor. Pass hydrogen into the large quartz tube (2), the gas flow rate is 900ml / min, the temperature of the upper furnace of the tubular resistance furnace (3) is adjusted to 500 ° C, the temperature of the middle and lower furnaces is adjusted to 1170 ° C, and a micro injection pump ( 1) Inject the mixed solution in the syringe into the large quartz tube at a rate of 13.3ml per hour, and crack in area A to produce a white airgel-like mist, which enters into the small In the quartz tube or honeycomb, black translu...

Embodiment 2

[0039] use as image 3 In the experimental device shown, a large quartz tube with a honeycomb structure is used as a high-temperature reactor, and the number of honeycombs is 5. Carbon nanotube fibers were prepared with ethanol as carbon source, ferrocene as catalyst, thiophene as accelerator, and hydrogen as carrier gas.

[0040] The operation process is the same as that in Example 1. 50 g of ethanol, 0.50 g of ferrocene, 0.28 g of thiophene, and 1 g of water are ultrasonically dispersed and mixed, put into a micro syringe, and installed at one end of the reactor. Pass hydrogen into the large quartz tube (2), the gas flow rate is 900ml / min, the temperature of the upper furnace of the tubular resistance furnace (3) is adjusted to 500 ° C, the temperature of the middle and lower furnaces is adjusted to 1170 ° C, and a micro injection pump ( 1) Inject the mixed solution in the syringe into the large quartz tube at a rate of 13.3ml per hour, and crack in area A to produce a whit...

Embodiment 3

[0042] The process is the same as in Example 1, except that the catalyst is replaced by cobaltocene, and the reaction is carried out under this condition. It is observed that continuous carbon nanotube fibers are formed, and the quality of the obtained fibers is not much different from that of Example 1.

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Abstract

The invention belongs to the technical field of nanofiber preparation, and particularly relates to a method for batch production of carbon nanotube fibers. A large quartz tube with a honeycomb structure inside, or the large quartz tube with small quartz tubes nested inside is used as a reaction chamber; a mixed solution of a carbon source, a catalyst, a promoter and water is introduced into a carrier gas stream through a micro-injection pump or an atomizer; the mixed solution enters the quartz tube under driving of the stream, and is vaporized and then cracked into atoms; the cracked atoms enter honeycomb cells of the quartz tube / the small quartz tubes under the driving of the stream; carbon nanotube aerogel in cylindrical structure is formed inside each honeycomb cell / small quartz tube; the gel with the cylindrical structure is pulled out of the quartz tube by mechanical tangling and is hydrated to obtain the continuous carbon nanotube fibers. The fibers prepared by the invention aresmaller in diameter and lower in linear density; the fiber quality is increased, and the yield is increased; the strength is higher, and the performance is better; the method is suitable for mass production of carbon nanotube fibers.

Description

technical field [0001] The invention belongs to the technical field of nanofiber preparation, and in particular relates to a method for batch production of carbon nanotube fibers. Background technique [0002] Since the discovery of carbon nanotubes, CNTs have attracted experts from different fields in the scientific community due to their unique one-dimensional tubular structure, excellent electrical properties, high thermal conductivity, good thermal and chemical stability, and low density. their broad interests. However, in order to give full play to the excellent properties of CNTs, it is necessary to assemble CNTs into macroscopic structures, such as fibers and films. [0003] The preparation of carbon nanotube fibers by high-temperature chemical vapor deposition is currently the most stable preparation method. The chemical vapor deposition method can produce continuous carbon nanotube fibers and is a method for industrialized preparation of fibers. Chinese patent CN1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/127D01F9/133
CPCD01F9/127D01F9/1278D01F9/1272D01F9/1271D01F9/1273D01F9/1275D01F9/1276D01F9/1277D01F9/133
Inventor 秦磊陈逗鸿弓晓晶罗鲲李亚利
Owner CHANGZHOU UNIV
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