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Method for producing carbon nanotube fiber and carbon nanotube fiber produced thereby

一种碳纳米管纤维、碳纳米管的技术，应用在碳纳米管、定向碳纳米管、填充碳纳米管等方向，能够解决碳纳米管不易分散、不易保持分散性、难以充分表现碳纳米管优异特性等问题，达到拉伸强度增强、制备时间减少的效果

Active Publication Date: 2019-04-02
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in order to use carbon nanotubes in composite materials and transparent conductive films, the dispersion of carbon nanotubes is important, but due to the cohesive force generated by the strong van der Waals force of carbon nanotubes, carbon nanotubes are not easy to disperse at high concentrations and are not easily stay decentralized
In addition, in the case of a composite material using carbon nanotubes as a reinforcing material, it is difficult to fully express the excellent characteristics of carbon nanotubes

Method used

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  • Method for producing carbon nanotube fiber and carbon nanotube fiber produced thereby
  • Method for producing carbon nanotube fiber and carbon nanotube fiber produced thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 6 and comparative example 1 to 3

[0044] [Examples 1 to 6 and Comparative Examples 1 to 3: Preparation of carbon nanotube fibers]

[0045] Carbon nanotube fibers are prepared by the following method using an apparatus for preparing carbon nanotube fibers, the apparatus comprising: a reactor main body including a reaction zone; an inlet located on the upper part of the main body and allowing a carbon source and a carrier gas to flow into the reaction zone; a heating device for heating the reaction zone; and a water container equipped at the lower part of the main body for discharging the carbon nanotube fibers to the outside of the device.

[0046] Under a nitrogen atmosphere, the temperature in the reaction zone was raised to 1200°C. Fe(C 5 h 5 ) 2 and sulfur (S) as a catalyst activator are placed in the reaction zone adjacent to the inlet. Fe(C 5 h 5 ) 2 and catalyst activator S, and by taking 2.0 hours -1 The gas-hour-space-velocity (GHSV) of methane was fed as the carbon source and the -1 and 13 ho...

experiment example 1

[0053] [Experimental Example 1: Characteristic Evaluation of Carbon Nanotube Fibers and Carbon Nanotube Fiber Composite Materials]

[0054] The tensile strengths of the carbon nanotube fibers of Examples 1 to 6 and Comparative Examples 1 to 3 and the carbon nanotube fiber composite material of Comparative Example 4 were measured using FAVIMAT+ (manufacturer: TEXTECHNO). The linear density of the fiber was measured according to ASTM D1577, and after the fiber tensile test, the breaking strength of the fiber was divided by the linear density to measure the tensile strength. Detailed measurement conditions are as follows. Based on Comparative Example 1, the tensile strength was evaluated as a relative value with respect to Comparative Example 1, and the values ​​are shown in Table 2 below.

[0055] Measurement conditions: load cell is 210cN, gauge length is 2cm, and speed is 2mm / min

[0056] [Table 2]

[0057] group

Tensile Strength

Example 1

118.3

...

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Abstract

The present invention relates to a method for producing a carbon nanotube fiber, and a carbon nanotube fiber produced thereby, the method comprising: a step (S1) for producing a carbon nanotube assembly from a carbon source in the presence of a catalyst and a catalyst activator; a step (S2) for bringing the carbon nanotube assembly into contact with a graphene oxide; and a step (S3) for fiberizingthe carbon nanotube assembly in contact with the graphene oxide.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2017-0015343 filed on February 3, 2017, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to a method for preparing carbon nanotube fibers capable of enhancing tensile strength and carbon nanotube fibers prepared thereby. Background technique [0004] A carbon nanotube (CNT) is an allotrope of carbon, and is a material having a diameter of several nanometers to tens of nanometers and a length of several hundred micrometers to several millimeters. Since Dr. Iijima reported such carbon nanotubes in Nature in 1991, these materials have been studied in various fields due to their excellent thermal, electrical, and physical properties and high aspect ratio. The intrinsic properties of carbon nanotubes arise from the sp 2 hybrid, and carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/12C01B32/158
CPCD01D10/02D01F9/12C01B2202/08C01B2202/10C01B2202/26C01B32/162C01B32/168C01B32/178C01B32/198D01F9/127D01F11/12D06M23/08D06M11/74C01B32/16D10B2101/122B82Y30/00B82Y40/00C01P2004/13
Inventor 吴有镇金知恩李美真李在宖金注翰权元锺李沅宰李振圭
Owner LG CHEM LTD
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