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Carbon nanotube fiber and method for producing same

A carbon nanotube fiber, carbon nanotube technology, applied in carbon nanotube fiber and its manufacture, in the field of manufacturing the carbon nanotube fiber, can solve problems such as poor operability and processability, and achieve the effect of excellent performance

Inactive Publication Date: 2016-09-07
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since CNT is a fine cylindrical body with a nanoscale diameter, the handling and processability of CNT alone are poor.

Method used

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  • Carbon nanotube fiber and method for producing same

Examples

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preparation example Construction

[0134] As the CNTs used in the preparation of the CNT dispersion liquid, the above-mentioned plurality of CNTs including deformed CNTs can be used.

[0135] [Dispersant]

[0136] In addition, the dispersant used in the preparation of the CNT dispersion liquid is not particularly limited as long as it can disperse CNT and can be dissolved in the solvent described below, and surfactants, synthetic polymers, or natural polymers can be used.

[0137] Here, examples of the surfactant include sodium dodecylsulfonate, sodium deoxycholate, sodium cholate, sodium dodecylbenzenesulfonate, and the like.

[0138] In addition, examples of synthetic polymers include polyether diol, polyester diol, polycarbonate diol, polyvinyl alcohol, partially saponified polyvinyl alcohol, acetoacetyl-modified polyvinyl alcohol, acetal-modified Non-toxic polyvinyl alcohol, butyral-based modified polyvinyl alcohol, silanol-based modified polyvinyl alcohol, ethylene-vinyl alcohol copolymer, ethylene-vinyl ...

Embodiment 1

[0176]

[0177] 1.9 g of aluminum tri-tert-butoxide as an aluminum compound was dissolved in 100 mL of 2-propanol as an organic solvent. Further, 0.9 g of triisopropanolamine was added and dissolved as a stabilizer to prepare a coating liquid A for forming a catalyst supporting layer.

[0178] Separately, 174 mg of iron acetate as an iron compound was dissolved in 100 mL of 2-propanol as an organic solvent. Furthermore, 190 mg of triisopropanolamine was added and dissolved as a stabilizer to prepare a coating liquid B for forming a catalyst layer.

[0179] On the surface of a Fe-Cr alloy SUS430 substrate (manufactured by JFE Steel Co., Ltd., 40mm×100mm, thickness 0.3mm, Cr 18%, arithmetic average roughness Ra≈0.59μm) as a base material, at room temperature 25°C, relative humidity 50 %, the above coating solution A was applied by dip coating. Specifically, after immersing the base material in the coating liquid A, the base material was held for 20 seconds, and the base mate...

Embodiment 2

[0189] When preparing carbon nanotube fibers, as a solvent containing a dispersant, instead of 500 mL of a 5% by mass aqueous solution of sodium deoxycholate (DOC), 500 mL of a 2.5% by mass aqueous solution of sodium deoxycholate (DOC) was used, and the amount of CNT1 added The CNT dispersion liquid 2 was produced by the same operation as Example 1 except that it was 2.5 g. Furthermore, CNT fibers were produced in the same manner as in Example 1 except that the CNT dispersion liquid 2 was used. Incidentally, the viscosity of the prepared CNT dispersion 2 was measured in the same manner as in Example 1, and the viscosity was 0.15 Pa·s. In addition, the density and tensile strength of the CNT single fiber 2 taken out from the produced CNT fiber were measured in the same manner as in Example 1. As a result, the density was 1.30 g / cm 3 , The tensile strength is 830MPa.

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Abstract

The purpose of the present invention is to provide a carbon nanotube fiber which has excellent properties such as excellent electrical conductivity, thermal conductivity and mechanical characteristics. This carbon nanotube fiber is composed of an assembly of a plurality of carbon nanotubes, and the plurality of carbon nanotubes include carbon nanotubes having structures that are at least partially collapsed. A method for producing a carbon nanotube fiber according to the present invention comprises a step wherein a carbon nanotube dispersion liquid, which contains a plurality of carbon nanotubes including carbon nanotubes having structures that are at least partially collapsed, a dispersant and a solvent, is spun by being extruded into a congelation liquid.

Description

technical field [0001] The present invention relates to a carbon nanotube fiber and a method for producing the same, in particular, to a carbon nanotube fiber comprising an aggregate of a plurality of carbon nanotubes, and a method for producing the carbon nanotube fiber. Background technique [0002] In recent years, carbon nanotubes (hereinafter also referred to as "CNTs") have attracted attention as materials excellent in electrical conductivity, thermal conductivity, and mechanical properties. [0003] However, since CNT is a fine cylindrical body with a nanoscale diameter, the handling and processability of CNT alone are poor. For this reason, the following method has been proposed: For example, a plurality of CNTs are aggregated into a fiber form to form a carbon nanotube fiber (hereinafter also referred to as "CNT fiber"), and the CNT fiber is utilized in a single form or as a part of a thread. (For example, refer to Patent Documents 1 and 2). Furthermore, this CNT ...

Claims

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Application Information

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IPC IPC(8): D01F9/127C01B31/02
CPCC01B32/158C01B32/159C01B32/174D01F9/12C01B2202/02D01F1/09D10B2101/122D10B2401/16
Inventor 上岛贡
Owner ZEON CORP
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