Plane heat source

Abstract

The invention relates to a plane heat source, comprising a heating element and at least two electrodes which are arranged at intervals and electrically connected with the heating element, wherein the heating element comprises a substrate and a plurality of carbon nano tubes distributed in the substrate; the carbon nano tubes in the heating element form at least a self-supporting carbon nano tube structure; and the carbon nano tubes in the carbon nano tube structure are arranged out of order or arranged by preferred orientation along the same direction or arranged by preferred orientation along different directions. The plane heat source can be used for producing self-heating clothes, gloves or shoes, electric heaters, infrared therapy apparatuses, electric radiators and the like and has wide application range.

Description

technical field [0001] The invention relates to a surface heat source, in particular to a surface heat source based on carbon nanotubes. Background technique [0002] Heat sources play an important role in people's production, life and scientific research. A surface heat source is a type of heat source. The surface heat source is a two-dimensional structure, and the object to be heated is placed above the two-dimensional structure to heat the object. Therefore, the surface heat source can heat all parts of the object to be heated at the same time, with a large heating surface, uniform heating and high efficiency. Surface heat sources have been successfully used in industrial fields, scientific research fields, or living fields, such as electric heaters, electric blankets, infrared therapeutic devices, and electric heaters. [0003] The existing surface heat source generally includes a heating element and at least two electrodes, the at least two electrodes are arranged on ...

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Problems solved by technology

[0006] Moreover, after the above-mentioned dispersion treatment of the carbon nanotubes, even if the carbon nanotubes can contact each other, the binding force is weak, and a self-supporting carbon nanotube structure cannot be formed.

Due to the low content of carbon nanotubes, the thermal response speed of thermoelectric materials is not fast enough, and the electrothermal conversion efficiency is not high enough, so the heating temperature of this electrothermal material is not high enough, which limits its application range.

In addition, in order to disperse carbon nanotubes in the liquid phase, when preparing electrothermal materials, the flexible matrix can only choose polymer materials, and the heat-resistant temperature of polymer materials is low. Material approach limits choice of substrate material

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