Method for producing conductive film

A technology of conductive film and conductive ink, which is applied in the direction of equipment for manufacturing conductive/semiconductive layers, conductive coatings, nanostructure manufacturing, etc., and can solve problems such as limiting the free volume of space, interfering with movement, and difficult to adjust the diameter of carbon nanotubes , to achieve the effects of reduced manufacturing costs, improved membrane properties, and simple manufacturing methods

Inactive Publication Date: 2015-09-09
HANWHA CHEMICAL CORPORATION
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  • Summary
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Problems solved by technology

[0006] However, as the synthesis yield of carbon nanotubes becomes higher, the three-dimensional entanglement of carbon nanotubes becomes frequent because the growing carbon nanotubes interfere with each other's motion, thus, largely restricting the steric free volume
[0007] In addition, in the existing catalysts for synthesizing carbon nanotubes, it is difficult to adjust the size of the catalyst metal particles that actually function only by preparing a catalyst solution containing a metal salt and adsorbing it on a carrier; and because the metal particles Agglomerated on the carrier, so it is difficult to adjust the diameter of carbon nanotubes, so that when using carbon nanotubes to manufacture conductive films, the properties of the conductive film are required to be adjusted only by the weight of carbon nanotubes

Method used

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  • Method for producing conductive film
  • Method for producing conductive film

Examples

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preparation example Construction

[0051] The preparation of metal catalyst-carbon nanotube composites may include:

[0052] (1) preparing a mixed dispersion by adding a carrier to a metal nanoparticle dispersion prepared by dispersing metal nanoparticles having an adjusted particle size into a solvent;

[0053] (2) preparing the metal catalyst by calcining and pulverizing the mixed dispersion; and

[0054] (3) A metal catalyst-carbon nanotube composite material is prepared by synthesizing a carbon nanotube having a minor axis diameter corresponding to the size of the metal particle on the metal nanoparticle of the metal catalyst using a metal catalyst and a reaction gas containing a hydrocarbon gas.

[0055] First, as described above, metal nanoparticles having an adjusted particle diameter are dispersed into a solvent to prepare a metal nanoparticle dispersion. The vehicle is added to the dispersion, thereby preparing a mixed dispersion. The solvent is not limited, and all solvents are possible as long as t...

Embodiment 1

[0070] [Example 1] Preparation of a metal catalyst for the manufacture of carbon nanotubes

[0071]1. Add 40 g of iron oxide nanoparticles (purity: 35, manufactured by Hanwha Chemical Co., Ltd.) with a particle diameter of 3 nm to 100 mL of n-hexane and use a probe mode ultrasonic generator for 30 minutes, thereby preparing metal Nanoparticle Dispersion. In the case where the solid components were not completely dissolved, the dispersion was dispersed again using an ultrasonic generator for 30 minutes.

[0072] 2. 200 g of magnesium oxide (MgO) powder (particle size: 10 um, produced by Duksan Company) as a carrier was added to the prepared solution dispersed with iron oxide nanoparticles, and dispersion was performed again using an ultrasonic generator for 30 minutes, A catalyst slurry was thus prepared.

[0073] 3. The prepared catalyst slurry was dried in a box furnace at 150° C. for 16 hours, and the dried catalyst was pulverized in a 300 cc mixer for 10 seconds five ti...

Embodiment 2

[0076] The catalyst of Example 2 was prepared in the same manner as in Example 1 above, except that 23 g of iron oxide nanoparticles (purity: 60%, manufactured by Hanwha Chemical Co., Ltd.) having a particle diameter of 10 nm were added.

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Abstract

Provided is a method for producing a conductive film in which a size of a particle of a metal catalyst for synthesizing carbon nanotubes is adjusted to adjust a minor axis diameter of the carbon nanotube, such that the conductive film containing the carbon nanotube having an adjusted diameter may have excellent film properties.

Description

technical field [0001] The present invention relates to a method of manufacturing a conductive film, and more particularly to a method of manufacturing a conductive film with improved film properties by using carbon nanotubes with adjusted diameters. Background technique [0002] A carbon nanotube is a macromolecule having specific physical properties depending on size or shape, which has a shape in which graphite in a hexagonal honeycomb shape composed of one carbon atom and three carbon atoms coupled to each other is in nanometer size diameter rolled up. Carbon nanotubes have light weight due to the hollow interior, excellent electrical conductivity similar to copper, excellent thermal conductivity similar to diamond, and excellent tensile strength similar to steel. Thanks to the barrel-shaped coupling structure, the tubes interact and change from conductors to semiconductors, even without intentional addition of dopants. Carbon nanotubes are classified into single-walle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00B82B3/00C01B31/02
CPCC01B2202/36B01J35/0033B82Y40/00B01J21/185C01B31/0233H01M4/9083B01J37/0036C09D11/52B01J23/78H01M4/8828H01M4/925C09D5/24C01B32/162H01B1/04Y10S977/742Y10S977/843Y10S977/932Y02E60/50C01B32/16B82B3/0009H01B13/0003C01B2202/30H01B13/0026C01B2202/22B82Y30/00
Inventor 赵伸齐金荣光朴寿永姜哈娜朴正训崔荣喆
Owner HANWHA CHEMICAL CORPORATION
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