Carbon composite material and method for producing same

Patent metadata

Field	Value
Publication number	US-2018201751-A1
Application number	US-201615743437-A
Country	US
Kind code	A1
Filing date	Oct 17, 2016
Priority date	Feb 26, 2016
Publication date	Jul 19, 2018
Grant date	—

Abstract

The present invention relates to a carbon composite material and a method for producing the same, and more particularly, to a carbon composite material capable of improving electrostatic dispersibility and flame retardancy, and a method for producing the same. The carbon composite material according to the present invention can be effectively applied to products requiring conductivity and flame retardancy.

First claim

1 . A carbon composite material comprising:
a polymer resin; a carbon nanotube; a glass fiber; and a phosphate ester derivative, wherein the carbon nanotube has a thermal decomposition temperature of 550° C. or higher.

2 . The carbon composite material according to claim 1 , wherein the polymer resin is a thermoplastic resin.

3 . The carbon composite material according to claim 1 , wherein the polymer resin is at least one selected from the group consisting of a nylon resin, a polyethylene resin, a polyamide resin, a polyester resin, a polycarbonate resin, a polyarylate resin and a cyclopolyolefin resin.

4 . The carbon composite material according to claim 1 , wherein an average length of the carbon nanotube is 0.1 to 500 μm.

5 . The carbon composite material according to claim 1 , wherein a maximum length of the carbon nanotube is 1000 μm.

6 . The carbon composite material according to claim 1 , wherein an average diameter of the carbon nanotube is 0.1 to 100 nm.

7 . The carbon composite material according to claim 1 , wherein an aspect ratio of the carbon nanotube is 500 to 5000 and is calculated according to the following Equation (1).
Aspect ratio=Length ( L )/Diameter ( D )  [Equation 1]

8 . The carbon composite material according to claim 1 , wherein the carbon nanotube comprises a single-wall carbon nanotube, a multi-wall carbon nanotube, or a combination thereof.

9 . The carbon composite material according to claim 1 , wherein the carbon nanotube is in the form of a rigid random coil.

10 . The carbon composite material according to claim 1 , wherein the phosphate ester derivative is at least one selected from the group consisting of phosphine-based, phosphine oxide-based, and mixtures thereof.

11 . The carbon composite material according to claim 1 , wherein the phosphate ester derivative is at least one selected from the group consisting of trialkyl ester, dialkyl ester and monoalkyl ester.

12 . The carbon composite material according to claim 1 , wherein an average length of the glass fiber is 1 mm to 10 mm.

13 . The carbon composite material according to claim 1 , wherein the carbon composite material has a tensile strength of 1,050 kg/cm 2 or more.

14 . The carbon composite material according to claim 1 , wherein the carbon composite material has a thermal deformation temperature of 95° C. or more.

15 . The carbon composite material according to claim 1 , a ratio of the maximum value to the minimum value of the surface resistance is 1×10 2 or less.

16 . A method for producing the carbon composite material, comprising mixing:
a polymer resin; a carbon nanotube; a glass fiber; and a phosphate ester derivative, wherein the carbon nanotube has an aspect ratio of 500 to 5000 and a thermal decomposition temperature of 550° C. or higher.

17 . The method according to claim 16 , wherein the method further comprises subjecting the mixture to melting, extruding, molding, or a combination thereof.

18 . A molded article comprising the carbon composite material of claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

• Kim Seokwon
• Kim Se Hyun
• Kim Tae Hyung
• Kim Pyeong-Gi
• Choi Suk Jo
• Cho Dong Hyun

Classifications

• C01B2202/02

  Single-walled nanotubes · CPC title

• C01B2202/36

  Diameter · CPC title

• C01B2202/26

  Mechanical properties · CPC title

• C01B2204/26

  Mechanical properties · CPC title

• C08K3/40

  Glass · CPC title