A carbon crystal plate with mica insulating layer

Abstract

The invention discloses a carbon crystal plate with a mica insulating layer. The carbon crystal plate comprises an aluminum base shell and a carbon crystal plate body. The aluminum base shell is formed with a heat dissipation strengthening structure corresponding to the lower part of the carbon crystal plate body. The plate body is arranged on the upper surface of the heat dissipation strengthening structure, including a resin base material layer and a carbon crystal film layer, a graphene oxide layer is deposited on the surface of the resin base material layer, and mica insulation is formed on the surface of the graphene oxide layer The film layer and the carbon crystal film layer, in addition, a layer of mica insulating layer is formed on the lower surface of the carbon crystal plate body; the mica insulating layer and the mica insulating film layer have the same composition, and are made of mica cooked powder and aramid fiber. And strengthen, and use graphene and NdFeB magnetic powder to improve and optimize the carbon crystal properties in the carbon crystal plate body. The invention has high overall strength, convenient assembly, high conversion energy efficiency, and good electrical insulation performance and heat dissipation performance.

Description

technical field [0001] The invention relates to the technical field of electrothermal heating plates, in particular to a carbon crystal plate with a mica insulating layer with better structural stability, insulation and thermal protection effects. Background technique [0002] Carbon fiber has the characteristics of electrical conductivity, thermal conductivity, anti-oxidation (long-term use at 300 ℃), light weight, small diameter (<7μm), small temperature coefficient of resistance, stable electrical properties, far-infrared radiation, shielding or damping electromagnetic wave interference, etc. The chopped conductive carbon fibers can be uniformly dispersed in various matrix fibers, easy to be produced on an industrial scale, and have been widely used in conductive heating materials. As a planar low-temperature radiation heating body made of carbon fiber material, the carbon crystal plate uses an electric field to cause severe friction and impact between the carbon atoms...

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Problems solved by technology

[0003] However, the preparation method of the carbon crystal plate prepared in the prior art is not perfect. Usually, it is a single-side heat generation or single-side heat dissipation structure. The heat generation and heat dissipation effects are relatively poor, and the problem of temperature superposition is prone to occur. Temperature coefficient materials, as the use temperature of this type of material increases, the resistance of the material will decrease, resulting in an increase in current and power. In the case of poor heat dissipation in the carbon crystal plate, it will make the carbon crystal plate equipment The internal power and current will continue to increase, causing a vicious circle of temperature rises, which will lead to potential safety hazards; in addition, there is another problem that carbon fiber materials are prone to leakage current due to the process or length of use during use, and This kind of leakage current will be especially obvious when used in saline-alkali or humid environment, and will directly affect the safe use of carbon crystal panels, especially unable to meet the requirements of high-power use.

[0004] At present, the main method used to solve the above problems is to improve the PTC materials used on carbon crystal plates, that is, to develop positive temperature coefficient materials, but the development and application process of new materials is relatively long, and different PTC materials themselves will also exist. Defects in processing difficulties, service life, performance, usage scenarios, stability, etc. make it difficult to find a perfect PTC material to replace existing technologies

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