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Method and device for continuously preparing carbon nano-tube composite thin film or fiber

A kind of carbon nanotube composite, carbon nanotube technology

Active Publication Date: 2017-12-15
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can introduce the compound to be compounded (i.e. the aforementioned functional guest) into the interior or surface of the fiber, the size is limited by the size of the round roll, and the contact area between the compound to be compounded and the carbon nanotube is small, requiring multi-step post-treatment means. It is difficult to carry out large-scale continuous implementation, and at the same time, the dispersion of functional objects in carbon nanotube composites is uneven and difficult to control, so that the quality of carbon nanotube composites cannot be guaranteed

Method used

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  • Method and device for continuously preparing carbon nano-tube composite thin film or fiber
  • Method and device for continuously preparing carbon nano-tube composite thin film or fiber
  • Method and device for continuously preparing carbon nano-tube composite thin film or fiber

Examples

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Effect test

Embodiment 1

[0074] Example 1 see figure 1 As shown, the present embodiment prepares carbon nanotube aggregates by the floating catalytic chemical vapor deposition method, and an injector is added at the outlet of the reaction zone, and the injector is filled with a graphene oxide water dispersion with a concentration of 0.5mg / ml. The nanotube aggregates are continuously sprayed before entering the liquid seal tank, and then the carbon nanotube composite aggregates are driven by the roll to pass through the liquid seal tank filled with water at a speed of 0.1m / min to 1m / min to obtain carbon nanotubes / Graphene composite fiber, and then the obtained composite fiber is passed through a flat heater, and finally twisted to obtain the finished carbon nanotube / graphene composite fiber, and its mechanical tensile curve can be found in figure 2 and image 3 Sample 4 in .

Embodiment 2

[0079] Example 2 see figure 1As shown, the present embodiment prepares carbon nanotube aggregates by the floating catalytic chemical vapor deposition method, and an injector is added at the outlet of the reaction zone, and the injector is filled with a graphene oxide aqueous dispersion with a concentration of 0.5 mg / ml. The container of the graphene oxide aqueous dispersion has an ultrasonic function. After 30 minutes, 600W ultrasonic, the graphene oxide aqueous dispersion with a smaller size is obtained, which is continuously sprayed before the carbon nanotube aggregate enters the liquid seal tank, and then passed through the roll Drive the carbon nanotube aggregates to pass through the liquid-sealed tank evenly at a certain speed to obtain carbon nanotube / graphene composite fibers, then pass the obtained composite fibers through a flat plate heater, and finally twist to obtain carbon nanotube / graphene composite fibers finished product.

Embodiment 3

[0080] Example 3 see figure 1 As shown, the present embodiment prepares carbon nanotube aggregates by the floating catalytic chemical vapor deposition method, and an injector is added at the outlet of the reaction zone, and the injector is filled with a silver nanoparticle aqueous dispersion with a concentration of 1 mg / ml. The tube aggregates are sprayed continuously before entering the liquid seal tank, and then the carbon nanotube aggregates are driven through the liquid seal tank at a certain speed by the roll to obtain carbon nanotube / silver nanoparticle composite fibers, and then the obtained composite fibers are passed through the liquid seal tank. The flat heater is finally twisted to obtain the finished carbon nanotube / silver nanoparticle composite fiber. The electrical conductivity of the obtained composite fiber is improved by 30% to 80%.

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Abstract

The invention discloses a method and a device for continuously preparing a carbon nano-tube composite thin film or fiber. The method comprises the following steps: preparing a continuous and un-contracted carbon nano-tube aggregate by utilizing a floating catalytic chemical vapor deposition method; continuously or intermittently spraying at least one selected material or a fluid containing at least one selected material to the carbon nano-tube aggregate, so that the selected material is fully in contact with and compounded with a plurality of carbon nano-tubes forming the carbon nano-tube aggregate to form a carbon nano-tube composite aggregate; collecting after the carbon nano-tube composite aggregate is contracted to obtain the continuous carbon nano-tube composite thin film or fiber. The method and the device disclosed by the invention have the benefit that as the carbon nano-tube aggregate is compounded with the selected material before contraction, the compound concentration and the contact area of the selected material and the carbon nano-tubes can be greatly improved, so that the controllable online continuous preparation of the carbon nano-tube composite thin film or fiber with high compound degree and uniform structure is realized.

Description

technical field [0001] The invention relates to a method for preparing a carbon nanotube composite film or fiber, in particular to a method and device for continuously preparing a carbon nanotube composite film or fiber. Background technique [0002] As a macroscopic application form of carbon nanotubes, carbon nanotube films and fibers have been widely concerned by researchers at home and abroad since their successful preparation. Since carbon nanotubes have excellent properties such as force, heat, and electricity, carbon nanotube films or fibers assembled from carbon nanotubes also have excellent properties and wider application fields. [0003] At present, the preparation methods of carbon nanotube films / fibers that have been developed include solution preparation method, array spinning method, floating catalytic vapor deposition method and solution spinning method. Taking carbon nanotube fibers as an example, the tensile strength of carbon nanotube fibers prepared by t...

Claims

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Application Information

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IPC IPC(8): C01B32/168C01B32/182
CPCC01B2202/22
Inventor 巩文斌曲抒旋吕卫帮
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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