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Single-walled carbon nanotube dispersion liquid and method for producing single-walled carbon nanotube dispersion liquid

A single-walled carbon nanotube and a manufacturing method technology, applied in the fields of nanostructure manufacturing, nanocarbon, nanotechnology, etc., can solve the problems that the single-walled carbon nanotube conductive film is not simple and the single-walled carbon nanotube is difficult to disperse, etc. Excellent transparency and conductivity, good dispersion effect

Inactive Publication Date: 2010-03-10
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, SWNTs are difficult to disperse in solvents
Therefore, it is not simple to form a single-walled carbon nanotube conductive film by coating

Method used

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  • Single-walled carbon nanotube dispersion liquid and method for producing single-walled carbon nanotube dispersion liquid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] [Process X, 1]

[0092] Single-walled carbon nanotubes were produced by the arc discharge method. The produced single-walled carbon nanotubes were reacted in 63% nitric acid at 85° C. for 2 days (wet oxidation). Then, the single-walled carbon nanotubes are purified / recovered by filtration.

[0093] In addition, scanning electron micrographs of the purified SWNTs are shown in figure 1 . Furthermore, the measurement results of the bundle lengths of single-walled carbon nanotubes are shown in figure 2 . According to the frequency distribution per 0.5μm ( figure 2) shows that there is a mode in the range of 1.5 μm to 2.0 μm. Furthermore, the number of bundles of single-walled carbon nanotubes whose bundle length is greater than 1.5 μm accounted for 73% of the whole. The number of bundles of single-walled carbon nanotubes whose bundle length was 1.5 μm or less accounted for 27% of the whole. That is, it can be seen that the number of bundles of single-walled carbon...

Embodiment 2

[0105] A single-walled carbon nanotube dispersion was obtained in the same manner as in Example 1, except that the hydroxyl-containing fullerene in Example 1 was 0.3 mg and the sodium hydroxide was 0.03 mg.

[0106] Then, using this single-walled carbon nanotube dispersion liquid, it carried out similarly to Example 1, and obtained the polycarbonate plate with a transparent conductive film.

[0107] Furthermore, the concentration measurement results of single-walled carbon nanotubes and the like in the single-walled carbon nanotube dispersion liquid are shown in Figure 4 and Table 1.

Embodiment 3

[0109] A single-walled carbon nanotube dispersion was obtained in the same manner as in Example 1, except that the hydroxyl-containing fullerene in Example 1 was 1 mg and the sodium hydroxide was 0.1 mg.

[0110] Then, using this single-walled carbon nanotube dispersion liquid, it carried out similarly to Example 1, and obtained the polycarbonate plate with a transparent conductive film.

[0111] Furthermore, the concentration measurement results of single-walled carbon nanotubes and the like in the single-walled carbon nanotube dispersion liquid are shown in Figure 4 and Table 1.

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Abstract

Disclosed is a single-walled carbon nanotube dispersion liquid containing a single-walled carbon nanotube, a fullerene and a solvent.

Description

technical field [0001] In particular, the present invention relates to a carbon nanotube dispersion for obtaining a transparent conductive film. Background technique [0002] In recent years, the demand for transparent conductive films is rapidly increasing due to the expansion of the market for thin display devices represented by liquid crystal displays. In addition, a transparent conductive film can be used as an electrode. Furthermore, it can be used as a member constituting a resistive touch panel. Furthermore, it can also be used as an electromagnetic wave shielding film. In addition, it can be used for various purposes. Such transparent conductive films are generally obtained from metal oxides such as InSn oxide (ITO). Furthermore, these transparent conductive films are formed by a method such as sputtering in a vacuum while heating the substrate. Therefore, film formation by these methods requires high temperature. Therefore, the use of resin substrates lacking ...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B1/00B82B3/00H01B13/00
CPCB82Y40/00C01B31/0273B82Y30/00C01B32/174Y10S977/734Y10S977/735Y10S977/737Y10S977/742C01B32/156B82B1/00B82B3/00
Inventor 北野高广
Owner KURARAY CO LTD
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