COAXIAL CABLE

• US 20070293086A1
• Filed: 11/28/2006
• Published: 12/20/2007
• Est. Priority Date: 06/14/2006
• Status: Active Grant

• Current Assignee: Beijing FUNATE Innovation Technology Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd., Tsinghua University
• Inventors: CHEN, CEASAR, Liu, Liang, Jiang, Kai-Li, Fan, Shou-Shan, Lee, Hsi-Fu, Chen, Ga-Lane
• Granted Patent: US 7,413,474 B2
• Time in Patent Office: Days
• US Class Current: 439/578
• CPC Class Codes: H01B 11/1066 the coating containing conductive or semiconductive material
• CPC Class Codes: H01B 11/1808 Construction of the conductors

Abstract

A coaxial cable (10) includes at least one conducting wire (110), at least one insulting layer (120) coating a respective conducting wire, at least one shielding layer (130) surrounding the at least one insulting layer, and a single sheath (140) wrapping the at least one shielding layer. The shielding layer includes a polymer material (134) and a plurality of carbon nanotubes (132) embedded in the polymer material. The coaxial cable is, advantageously, an electromagnetic interference (EMI) shield cable.

Claims

1. A coaxial cable comprising:

at least one conducting wire;

at least one insulting layer, each insulating layer being respectively coated on a corresponding conducting wire;

at least one shielding layer surrounding the at least one insulting layer, each shielding layer comprising a polymer material and a plurality of carbon nanotubes embedded in the polymer material; and

a sheath wrapping the at least one shielding layer.

2. The coaxial cable as claimed in claim 1, wherein the coaxial cable comprises a conducting wire, an insulating layer applied directly upon the conducting wire, a shielding layer coated upon the insulating layer, and a sheath wrapping the shielding layer.

3. The coaxial cable as claimed in claim 1, wherein the coaxial cable comprises a plurality of conducting wires, a plurality of insulating layers each respectively coated on a corresponding one of the conducting wires, a shielding layer surrounding all the coated conducting wires, and a sheath wrapping the shielding layer.

4. The coaxial cable as claimed in claim 1, wherein the coaxial cable comprises a plurality of conducting wires, a plurality of insulating layers respectively coated on a corresponding one of the conducting wires, a plurality of shielding layers respectively coated on a corresponding one of the insulating layers, and a sheath wrapping all the conducting wires coated, in turn, with the corresponding insulating layer and the corresponding shielding layer.

5. The coaxial cable as claimed in claim 1, wherein the polymer material is selected from a group consisting of polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene styrene terpolymer (ABS), and PC/ABS.

6. The coaxial cable as claimed in claim 1, wherein a mass percent of the carbon nanotubes in the shielding layer is about 0.2-10%.

7. The coaxial cable as claimed in claim 1, wherein an average length of the carbon nanotubes is about 0.1 microns to 10 milimeters, and an average diameter of the carbon nanotubes is about 0.5-40 nanometers.

8. The coaxial cable as claimed in claim 1, wherein the carbon nanotubes are selected from a group consisting of single-walled carbon nanotubes, multi-walled carbon nanotubes, single-walled carbon nanotube bundle, multi-walled carbon nanotubes bundle, and mixtures thereof.

9. The coaxial cable as claimed in claim 1, wherein the conducting wire is made of a metal material or a carbon nanotube/polymer composite material.