Composite electrothermal material

Abstract

The invention discloses composite electrothermal material. The composite electrothermal material is characterized by comprising basic cloth layers, high temperature resistant insulating layers and a heating layer. The high temperature resistant insulating layers are arranged on the upper side and the lower side of the heating layer, the basic cloth layers are arranged outside the high temperature resistant insulating layers, heat preservation layers are arranged between the high temperature resistant insulating layers and the heating layer, and buffering bubbles are arranged in the high temperature resistant insulating layers. The composite electrothermal material has the advantages of being even in heating, high in strength, not prone to damage, fast in heat conduction, high in heat efficiency and high in secure property. Equipment is not convenient to carry and poor in security.

Description

technical field [0001] The invention relates to the technical field of electric heating components, in particular to a composite electric heating material. Background technique [0002] Electrothermal materials refer to materials that can convert electrical energy into heat energy through their own resistance. Common electrothermal materials are made of metals (such as tungsten wires, photographs, etc.) or semiconductors (such as silicon carbide rods, etc.). Due to the good electrical conductivity of metals, the resistance is usually small, so high power and temperature can be generated. But at the same time, electrothermal materials composed of metals or semiconductors also have obvious disadvantages, such as these materials cannot be deformed at room temperature; and the resistance is usually very low, the power is too large, and the heat generation is too high, so they are not suitable for use in the room temperature range. Metals have poor affinity to the human body, a...

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Problems solved by technology

But at the same time, electrothermal materials composed of metals or semiconductors also have obvious disadvantages. For example, these materials cannot be deformed arbitrarily at room temperature; and the resistance is usually very low, the power is too large, and the heat generation is too high, so they are not suitable for use in the room temperature range.

Metals have poor affinity to the human body, and even some metals such as copper can be harmful to the human body

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