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Graphite sheet electrical heating component and manufacturing method thereof

A graphite sheet and electric heating technology, which is applied in the direction of electrical components, ohmic resistance heating, electric heating devices, etc., can solve the problems of difficulty in controlling the uniformity of graphite slurry, unfavorable large-scale promotion, aging and failure of adhesive materials, etc., and achieve comprehensive The effect of industrial upgrading, simple and reliable manufacturing process, and long service life

Inactive Publication Date: 2015-07-08
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, this technology has disadvantages such as complex process, poor product stability, and high manufacturing cost.
It is difficult to control the uniformity of the deployment and application of graphite slurry, which is easy to cause uneven heating; the bonding material in the slurry is easy to age and fail during long-term use, which will degrade the power of the product and reduce the service life; use silver glue As an electrode, the finished product is expensive, which is not conducive to large-scale promotion; and this technology is only suitable for low-temperature heating products below 100 degrees

Method used

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  • Graphite sheet electrical heating component and manufacturing method thereof

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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, this embodiment includes: an insulating layer 1, a flexible graphite sheet 3 disposed between the insulating layers 1, copper foil electrodes 2 at both ends, and a sealant 4 between the graphite sheet and the insulating layer.

[0023] The insulating layer 1 adopts different materials according to the heating temperature, wherein:

[0024] 1) When the heating temperature is below 100°C, it is a low temperature heater. At this time, the insulating layer is made of polycarbonate film, and the sealant is made of insulating and heat-conducting glue with a temperature resistance of about 150°C. Polycarbonate film can withstand a temperature of about 130°C, and has good insulation and mechanical strength. While insulating the graphite sheet, it strengthens the strength of the entire heater.

[0025] 2) When the heating temperature is between 100 and 400°C, it is a medium temperature heater. At this time, the insulating layer is made of polyimide...

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Abstract

The invention relates to a graphite sheet electrical heating component. An ultrathin flexible graphite sheet which is 0.01-1 mm thick is adopted as the electrical heating component and used for heating an object after being packaged by insulating layers. The electrical heating component can be suitable for a low-temperature electric heating field, a medium-temperature electric heating field, a high-temperature electric heating field, an ultrahigh-temperature electric heating field and other various electric heating fields by adopting different insulating layer materials. The insulating layer materials wrapping the graphite sheet can insulate the graphite sheet and improve the strength of the graphite sheet. The technology has the advantages of being stable, durable, high in applicability, low in cost, simple in manufacturing process and the like and is suitable for mass industrial production and design and manufacturing of high-energy heaters for labs. The graphite sheet electrical heating component can be used as electric heating equipment in daily life and used in the high-temperature and ultrahigh-temperature heating fields in industrial production.

Description

technical field [0001] The invention relates to a technology in the field of electric heating devices, in particular to a graphite sheet electric heating component and a preparation method thereof. Background technique [0002] From the electric heating blankets, geothermal film, electric cups, electric furnaces, etc. used for heating in daily life, to the heating wall used in the boiling critical heat flux experiment, electric heaters are inseparable. An important indicator for evaluating the heating effect and safety performance of electric heaters is the uniformity of temperature distribution on the heating surface. If the surface temperature distribution of the electric heating blanket is uneven, it will not only affect the user experience, but also easily cause local overheating, which may seriously cause accidents such as fire. In the boiling critical heat flux experiment, if the surface temperature distribution of the heater used to heat the wall is not uniform, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/36
Inventor 龚圣捷王驰梅勇张波涛黄逸彬顾汉洋
Owner SHANGHAI JIAO TONG UNIV
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