Electric heating plate and coating preparation method of high-temperature-resistant heat-conducting insulating protective coating thereof

Abstract

The invention relates to an electric heating plate. The electric heating plate comprises a high-temperature heat conduction plate, a graphene heating coating and a conductive electrode coating, and the high-temperature heat conduction plate is coated with the graphene heating coating; the graphene heating coating is sequentially coated with the conductive electrode coating and a high-temperature-resistant heat-conducting insulating protective coating; the graphene heating coating is electrically connected with the conductive electrode coating; wherein the high-temperature-resistant heat-conducting insulating protective coating covers the graphene heating coating and the part, connected with the graphene heating coating, of the conductive electrode coating, an elastic conductive terminal isarranged on the high-temperature heat conduction plate, and a part, exposed out of the high-temperature-resistant heat-conducting insulating protective coating, of the conductive electrode coating isin close contact with the elastic conductive terminal. The graphene heating coating is coated with the high-temperature-resistant heat-conducting insulating protective coating, the high-temperature-resistant heat-conducting insulating protective coating covers the graphene heating coating and the part, connected with the graphene heating coating, of the conductive electrode coating, oxidation attenuation of the graphene heating coating can be prevented, and the service life of the graphene heating coating is prolonged.

Description

technical field [0001] The invention relates to an electric heating board and a coating preparation method for a high-temperature-resistant heat-conducting insulating protective coating of the electric heating board. Background technique [0002] The existing electric heating plate adopts a glass-ceramic plate or a mica plate and one end surface is coated with a graphene heating coating, and the graphene heating coating is coated with a conductive electrode coating, and the conductive electrode coating and the graphene heating coating are electrically connected , the power is transmitted to the graphene heating coating through the conductive electrode coating, and the graphene heating coating generates heat and transfers to the glass-ceramic plate or mica sheet, so that the glass-ceramic plate or mica sheet generates high temperature for cooking food or keep warm. [0003] Since the glass-ceramic plate has high temperature resistance (900°C high temperature resistance) and ...

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Problems solved by technology

[0004] However, the graphene heating coating of the existing electric heating board is directly exposed to the air, and the graphene heating coating is not coated with a protective coating. The graphene heating coating is easily corroded by oxidation or corrosive gases, resulting in the graphene heating coating The heating effect of the layer is easy to attenuate, reducing the service life of the graphene heating coating, and the graphene heating coating is exposed to the outside world, which is prone to the risk of electric shock

[0005] In addition, graphene heat-generating coatings are now used to coat heat-conducting plates, and conductive electrode coatings are coated on graphene heat-emitting coatings. They are mainly used in occasions where the heating temperature is not high. The connection between the conductive electrode coating and the conductive terminal It is generally connected by soldering. When it needs to be used in high-temperature heating occasions, it is easy to desolder if the conductive electrode coating and the conductive terminal are connected by soldering.

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