Carbon nanotube-coated electric wire

A technology of carbon nanotubes and coated wires, applied in circuits, conductive materials, conductive materials, etc., can solve problems such as unproposed technology and difficulty, and achieve the effects of easy wiring, improved insulation, and excellent operability

Inactive Publication Date: 2020-06-12
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is not easy to make CNTs into wires, and no technology has been proposed to use CNTs as wires

Method used

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  • Carbon nanotube-coated electric wire
  • Carbon nanotube-coated electric wire
  • Carbon nanotube-coated electric wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～12

[0083] (Regarding Examples 1 to 12 and Comparative Examples 1 to 6)

[0084] About the manufacturing method of CNT wire

[0085]First, the dry spinning method (Japanese Patent No. 5819888) or the wet spinning method (Japanese Patent No. 5135620, Japanese Patent No. 5131571, Japanese Patent No. 5131571, Japanese Patent No. No. 5288359) to obtain a wire (single wire) of a CNT wire with an equivalent circular diameter of 0.2 mm. In addition, for CNT wires having an equivalent circle diameter of more than 0.2 mm, the number of CNT wires having an equivalent circle diameter of 0.2 mm is appropriately twisted to form a twisted wire.

[0086] About the method of covering the outer peripheral surface of a CNT wire rod with an insulating coating layer

[0087] By using any one of the following resins, extrusion coating is carried out around the conductor using a common electric wire manufacturing extrusion molding machine to form an insulating coating layer, thereby making the exampl...

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Abstract

Provided is a carbon nanotube-coated electric wire which has superior conductivity equivalent to wire made from copper, aluminum or the like, and with which it is possible to achieve excellent withstand voltage properties, and reduced weight. This carbon nanotube-coated electric wire (1) comprises a carbon nanotube wire (10) made from one or a plurality of carbon nanotube aggregates (11) which arein turn made up of a plurality of carbon nanotubes (11a); and an insulating coating layer (21) which covers the carbon nanotube wire. The ratio of the cross-sectional area in the radial direction ofthe insulating coating layer (21) with respect to the cross-sectional area in the radial direction of the carbon nanotube wire (10) is greater than 1.5, the cross-sectional area in the radial direction of the carbon nanotube wire (10) is at least 0.031 mm2, and the cross-sectional area in the radial direction of the insulating coating layer (21) is at least 0.049 mm2.

Description

technical field [0001] The present invention relates to a carbon nanotube-coated electric wire in which a carbon nanotube wire material composed of a plurality of carbon nanotubes is coated with an insulating material. Background technique [0002] Carbon nanotubes (hereinafter, sometimes referred to as "CNTs") are raw materials having various properties and are expected to be used in many fields. [0003] For example, a CNT is a cylindrical body having a single layer having a hexagonal lattice-like mesh structure, or a three-dimensional mesh structure in which a plurality of layers of the cylindrical body are arranged approximately coaxially, and the CNT is lightweight, has electrical conductivity, thermal conductivity, It is excellent in various properties such as mechanical strength. However, it is not easy to make CNTs into wires, and no technology has been proposed to use CNTs as wires. [0004] As an example of a technique using a small number of CNT wires, studies a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/08C01B32/168H01B7/00
CPCC01B32/168H01B5/08H01B7/00H01B1/04B05D5/12H01B1/023H01B1/026H01B5/10
Inventor 山下智会泽英树山崎悟志
Owner FURUKAWA ELECTRIC CO LTD
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