Ceramic paste composition using carbon nanotube or carbon nanotube-metal complex, and conductive film containing same

Patent metadata

Field	Value
Publication number	US-2016254072-A1
Application number	US-201414904358-A
Country	US
Kind code	A1
Filing date	Jul 9, 2014
Priority date	Jul 12, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

A ceramic paste composition including carbon nanotubes or a carbon nanotube-metal composite and a silicone adhesive, wherein the silicone adhesive includes 0.1 to 10 wt % of a silanol group, and has a mole ratio of a phenyl group to a methyl group of 0.3 to 2.5. The ceramic paste composition has low sheet resistance, through which an excellent heat generating property, and shielding, absorbing and conducting properties may be implemented in one or more embodiments. Further, though the ceramic paste composition has a very high heat generating temperature of 400° C., as compared with general paste based on carbon nanotubes, the physical properties thereof may be maintained stably. In addition, the ceramic paste may be widely used in various fields including heat generating products such as those for keeping warmth or heating, and products for electromagnetic wave shielding and absorption, electrodes, electronic circuits, antennas, and the like.

First claim

1 . A ceramic paste composition comprising carbon nanotubes or a carbon nanotube-metal composite, and a silicone adhesive,
wherein the silicone adhesive includes 0.1 to 10 wt % of a silanol group, based on 100 wt % of the total silicone adhesive, and has a mole ratio of a phenyl group to a methyl group of 0.3 to 2.5.

2 . The ceramic paste composition of claim 1 , wherein a metal contained in the carbon nanotube-metal composite is one or more selected from the group consisting of silver, platinum, gold, copper, nickel, iron, cobalt and aluminum.

3 . The ceramic paste composition of claim 2 , wherein a content of the metal is 1 to 80 parts by weight, based on 100 parts by weight of the carbon nanotube-metal composite.

4 . The ceramic paste composition of claim 1 , wherein a content of the carbon nanotubes or carbon nanotube-metal composite is 20 to 80 wt %, and a content of the silicone adhesive is 20 to 80 wt %.

5 . The ceramic paste composition of claim 1 , further comprising an organic binder, a dispersant, and an organic solvent.

6 . The ceramic paste composition of claim 5 , wherein the organic binder is any one selected from the group consisting of ethyl cellulose, nitrocellulose and a mixture thereof;
the dispersant is any one or more selected from the group consisting of a phosphorus ester salt of amino-containing oligomer or polymer, monoester or diester of phosphoric acid, acidic dicarboxylic monoester, a polyurethane-polyamine adduct, and polyalkoxylated monoamine or diamine; and the organic solvent is any one or more selected from the group consisting of acetone, methylethyl ketone, methyl alcohol, ethyl alcohol, isopropyl alcohol, butyl alcohol, ethylene glycol, polyethylene glycol, tetrahydrofuran, dimethyl formamide, dimethyl acetamide, N-methyl-2-pyrrolidone, hexane, cyclohexanone, toluene, chloroform, dichlorobenzene, dimethylbenzene, trimethylbenzene, pyridine, methylnaphthalene, nitromethane, acrylonitrile, octadecylamine, aniline, dimethylsulfoxide, diethyleneglycolethylether and terpineol.

7 . The ceramic paste composition of claim 5 , wherein a content of the carbon nanotube or carbon nanotube-metal composite is 1 to 50 wt %, a content of the organic binder is 1 to 20 wt %, a content of the silicone adhesive is 1 to 30 wt, a content of the dispersant is 1 to 20 wt %, and a content of the organic solvent is 1 to 90 wt %.

8 . A conductive film comprising the ceramic paste composition of claim 1 .

9 . The conductive film of claim 8 , wherein it has a heat generating temperature of 40 to 400° C. with applied voltage of 1.5 to 220 V, when having a thickness of 10 to 600 μm.

Assignees

• Bioneer Corp

Inventors

• Park Han Oh
• Kim Jae Ha
• Kim Jun Pyo

Classifications

• H01B1/24 Primary

  the conductive material comprising carbon-silicon compounds, carbon or silicon · CPC title

• H05B3/14

  the material being non-metallic · CPC title

• H01B1/04

  mainly consisting of carbon-silicon compounds, carbon or silicon · CPC title

• H05B2214/04

  Heating means manufactured by using nanotechnology · CPC title

• C04B35/52

  based on carbon, e.g. graphite · CPC title