Carbon nanotube enameled wire and application thereof

A technology of carbon nanotubes and carbon nanotube fibers, which is applied in the direction of reducing the size of conductors/cables, bendable conductors, and cable/conductor manufacturing. Effects of current carrying capacity and electrical conductivity, decreased electrical resistance, good flexibility and high temperature resistance

Inactive Publication Date: 2019-10-08
SHENZHEN XIWAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a carbon nanotube enameled wire and its application, aiming to solve the problem that the copper wire in the enameled wire in the prior art is easily broken due to high temperature or impact and the current carrying capacity is low

Method used

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  • Carbon nanotube enameled wire and application thereof
  • Carbon nanotube enameled wire and application thereof
  • Carbon nanotube enameled wire and application thereof

Examples

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preparation example Construction

[0053] The preparation method comprises the following steps:

[0054] S01. Provide a carbon nanotube film, twist the carbon nanotube film, and then obtain a carbon nanotube fiber bundle through twisted paralleling or non-twisting paralleling;

[0055] S02. Using a polar solvent to densify the carbon nanotube fiber bundle to obtain a carbon nanotube core;

[0056] S03. Coating an insulating material on the surface of the outer layer of the carbon nanotube core, and curing to obtain a carbon nanotube enameled wire.

[0057] In the above step S01, a carbon nanotube film is provided, the carbon nanotube film is twisted to obtain carbon nanotube fibers, and then twisted or untwisted to obtain carbon nanotube fiber bundles. Preferably, mechanically twisting the carbon nanotube film specifically refers to twisting the carbon nanotube film so that the carbon nanotube film becomes a carbon nanotube fiber. Preferably, during the mechanical twisting process, the The twist of mechanical...

Embodiment 1

[0073] A carbon nanotube enameled wire and a preparation method thereof, comprising the following steps:

[0074] Pull out a carbon nanotube film with a width of 7.5 cm and a length of 3 m from the carbon nanotube array;

[0075] Use a twist meter to mechanically twist the above film with a twist of 1200-1500tpm to obtain carbon nanotube fibers with a diameter of about 0.09mm;

[0076] Carry out ethanol solution treatment to above-mentioned carbon nanotube fiber, make it dense;

[0077] For the carbon nanotube fibers after the above treatment, 10 fibers are merged together with a twist of 100tpm, and then a layer of flexible ceramic coating is uniformly coated on the surface, and the sizing rate is 10-30%. The flexible ceramic coating contains 5-30% ceramic The paint is dissolved in water or ethanol, the surface curing condition is 20-30min at room temperature, and the complete curing condition is 72h at room temperature. Finally, carbon nanotube enameled wire is obtained, an...

Embodiment 2

[0079] A carbon nanotube enameled wire and a preparation method thereof, comprising the following steps:

[0080] Pull out a carbon nanotube film with a width of 7.5 cm and a length of 3 m from the carbon nanotube array;

[0081] Use a twist meter to mechanically twist the above film with a twist of 1200-1500tpm to obtain carbon nanotube fibers with a diameter of about 0.09mm;

[0082] Carry out ethanol solution treatment to above-mentioned carbon nanotube fiber, make it dense;

[0083] For the carbon nanotube fibers after the above treatment, 3 fibers are merged together with a twist of 100tpm, and then a layer of conductive silver paste is coated on the surface, the sizing rate is about 70%, and it is dried and cured at 80-100°C for at least half an hour;

[0084] A layer of PVA insulating varnish is coated on the surface of the above-mentioned conductor, and the PVA insulating varnish is a PVA aqueous solution with a concentration of 10%, which is dried and cured at 80°C f...

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Abstract

The invention provides a carbon nanotube enameled wire and application thereof. The carbon nanotube enameled wire comprises a carbon nanotube core and an insulating layer coating the outer surface ofthe carbon nanotube core, wherein the carbon nanotube core is a carbon nanotube fiber bundle formed by a plurality of carbon nanotube fibers. Based on the good flexibility of the carbon nanotube fiberitself and an insulating material being a flexible coating, thousands of degrees of high temperature can be withstood, flexibility, bending and winding can still be achieved after the material coatsthe fiber surface and is cured, and the prepared carbon nanotube enameled wire is ensured to have strong flexibility and is not broken by high temperature or impact. The surface of the carbon nanotubeis coated with the insulating material to enable the fiber surface of the carbon nanotube to be insulated, thereby avoiding short circuit caused by winding. Besides, the contact between the carbon nanotube fiber and the oxygen can be greatly reduced, the carbon nanotube fiber is not melted at a high temperature when large current is conducted to the conductor, and the material use safety performance is improved.

Description

technical field [0001] The invention belongs to the field of wires and cables, in particular to a carbon nanotube enameled wire and its application. Background technique [0002] Enameled wire is the main raw material of products such as motors, electrical appliances and household appliances. Especially in recent years, the electric power industry has achieved sustained and rapid growth, and the rapid development of household appliances has brought a wider field of application of enameled wire, followed by Higher requirements are put forward for enameled wire. Enameled wire is a main variety of winding wire, which is composed of conductor and insulating layer. After the bare wire is annealed and softened, it is painted and baked many times. However, it is not easy to produce products that meet both standard requirements and customer requirements. It is affected by factors such as raw material quality, process parameters, production equipment, and the environment. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/04H01B7/18H01B7/29H01B13/00H01B13/02H01B13/06H02K3/30H02K3/02
CPCH01B7/0009H01B7/02H01B7/04H01B7/18H01B7/29H01B13/00H01B13/0006H01B13/02H01B13/065H02K3/02H02K3/30
Inventor 邓飞
Owner SHENZHEN XIWAN TECH CO LTD
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