Blending improvement carbon-composite having carbon-nanotube and its continuous manufacturing method and apparatus

Patent metadata

Field	Value
Publication number	US-9567222-B2
Application number	US-201013381451-A
Country	US
Kind code	B2
Filing date	Jun 30, 2010
Priority date	Jun 30, 2009
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

Provided area carbon nanotube composite material obtained by treating a mixture including carbon nanotubes, at least one carbon compound other than carbon nanotubes and a dispersion medium under a sub-critical or super-critical condition of 50-400 atm, and a method for producing the same. More particularly, the method for producing a carbon nanotube composite material, includes: introducing a mixture including carbon nanotubes, at least one carbon compound other than carbon nanotubes and a dispersion medium into a preheating unit under a pressure of 1-400 atm to preheat the mixture; treating the preheated mixture under a sub-critical or super-critical condition of 50-400 atm; cooling and depressurizing the resultant product to 0-1000 C and 1-10 atm; and recovering the cooled and depressurized product. Provided also is an apparatus for producing a carbon nanotube composite material in a continuous manner.

First claim

The invention claimed is:

1. A carbon nanotube composite material obtained by treating a mixture comprising carbon nanotubes, at least one carbon compound other than carbon nanotubes, a dispersion medium, and an oxidant selected from the group consisting of oxygen, air, ozone, hydrogen peroxide, and mixtures thereof under a sub-critical condition of 50-400 atm.

2. The carbon nanotube composite material according to claim 1 , wherein the carbon compound is selected from the group consisting of graphite, carbon fibers, carbon black, graphene, fullerene and a combination thereof.

3. The carbon nanotube composite material according to claim 1 , wherein the carbon nanotubes are selected from the group consisting of single-walled carbon nanotubes, double-walled carbon nanotubes, thin multi-walled carbon nanotubes, multi-walled carbon nanotubes, roped carbon nanotubes and combinations thereof.

4. The carbon nanotube composite material according to claim 1 , wherein the dispersion medium is selected from the group consisting of water, aliphatic alcohols, carbon dioxide and a mixture thereof.

5. The carbon nanotube composite material according to claim 1 , which satisfies Formula 1:
1×10 2 Ω/□≦R p ≦1×10 8 Ω/□  [Formula 1]

wherein, R p is the surface resistance of a polyethylene resin containing 4 wt % of the carbon nanotube composite material.

6. The carbon nanotube composite material according to claim 1 , wherein the carbon nanotubes and the carbon compound are used in a weight ratio of 1:0.00001-1:100.

Assignees

• Jung Man Woo
• Jeon Seong Yun
• Hong Seong Cheol
• Han Joo Hee
• Oh Joo Seok
• Lee Jin Seo
• Do Seung Hoe
• Hanwha Chemical Corp

Inventors

• Jung Man Woo
• Jeon Seong Yun
• Hong Seong Cheol
• Han Joo Hee
• Oh Joo Seok
• Lee Jin Seo
• Do Seung Hoe

Classifications

• C01B2202/06

  Multi-walled nanotubes · CPC title

• C01B31/0273 Primary

  Chemistry & Metallurgy · mapped topic

• Y02P20/544

  Cross-Sectional Technologies · mapped topic

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C01B31/0226

  Chemistry & Metallurgy · mapped topic