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Flame-retardant electrothermal film capable of shielding leakage current

A technology of leakage current and electric heating film, which is applied in the direction of ohmic resistance heating, electric heating devices, electrical components, etc., can solve the problems of increasing heat consumption, increasing the heat transfer resistance of electric heating film, reducing thermal efficiency, etc. The effect of reducing the thermal resistance of the film and improving the overall performance

Pending Publication Date: 2020-11-06
北京烯研科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its heat resistance is poor, and it is easy to decompose corrosive hydrogen chloride at higher temperatures, and its physical properties are also rapidly reduced.
Especially when burning, a large amount of smoke and toxic and harmful gases will be released, which will endanger human health and pollute the environment.
[0006] In addition, due to the existence of a small amount of air in the envelope of the electric heating film, the heat transfer resistance of the electric heating film increases. On the one hand, it increases the heat consumption and reduces the thermal efficiency. On the other hand, it also greatly increases the risk of local overheating and fire hazards.

Method used

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  • Flame-retardant electrothermal film capable of shielding leakage current
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The planar electric heating material layer 5 is made of polymer composite electric heating film, and the power density is 200W / m 2 , length 460mm, width 450mm, thickness 0.3mm. Use 0.5mm 2 The flexible plastic copper wire is firmly connected to the first and second conductive electrodes 501 and 502.

[0059] The leakage current shielding layer 3 is made of aluminized PET film with a thickness of 0.05 mm, a length of 460 mm, and a width of 450 mm. There is at least 25 mm wide around the surface of the plated layer without the aluminum plated layer, so as to ensure insulation from the planar electric heating material layer 5 . The 0.5mm2 PVC plastic copper soft wire is firmly connected to the current-carrying electrode 301.

[0060] The upper and lower waterproof and flame-retardant insulating layers 1 and 7 are made of glass fiber flame-retardant silicone rubber composite film, with a length of 500mm, a width of 500mm, and a thickness of 0.3mm.

[0061] The first, se...

Embodiment 2

[0065] The planar electric heating material layer 5 is made of polymer composite electric heating film, and the power density is 600W / m 2 , length 460mm, width 450mm, thickness 0.3mm. The first and second conductive electrodes 501 and 502 are firmly connected with 0.5mm2 plastic copper flexible wires.

[0066] The leakage current shielding layer 3 is made of aluminized PET film with a thickness of 0.05 mm, a length of 460 mm, and a width of 450 mm. There is at least 25 mm wide around the surface of the plated layer without the aluminum plated layer, so as to ensure insulation from the planar electric heating material layer 5 . Use 0.5mm 2 The temperature-resistant plastic copper flexible wire is firmly connected to the current-carrying electrode 301.

[0067] The upper and lower waterproof and flame-retardant insulating layers 1 and 7 are made of glass fiber flame-retardant silicone rubber composite film, with a length of 500mm, a width of 500mm, and a thickness of 0.3mm. ...

Embodiment 3

[0072] Graphene electric heating film is used for the planar electric heating material layer 5, and the power density is 1000W / m 2 , length 460mm, width 220mm, thickness 0.3mm. Use 0.5mm 2 The flexible plastic copper wire is firmly connected to the first and second conductive electrodes 501 and 502.

[0073] The leakage current shielding layer 3 is made of aluminized PET film with a thickness of 0.05 mm, a length of 460 mm, and a width of 220 mm. There is at least 25 mm wide around the surface of the plated layer without the aluminum plated layer, so as to ensure insulation from the planar electric heating material layer 5 . Use 0.5mm 2 The glass fiber silicone annealed copper wire is firmly connected with the current-carrying electrode 301.

[0074] The upper and lower waterproof and flame-retardant insulating layers 1 and 7 are made of glass fiber flame-retardant silicone rubber composite film, with a length of 500mm, a width of 250mm, and a thickness of 0.3mm.

[0075]...

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Abstract

The invention relates to the technical field of electrothermal films, and discloses a flame-retardant electrothermal film capable of shielding leakage current. The film comprises functional layers: aplanar electrothermal material layer, a leakage current shielding layer and a waterproof flame-retardant insulating layer. All the functional layers are bonded into a whole through the flame-retardantbinder layer. The product can shield leakage current and improve the fireproof and flame-retardant properties of the electrothermal film. The thermal resistance of the electrothermal film is greatlyreduced compared with that of a PVC envelope electrothermal film, and potential safety hazards are reduced. Under the high-temperature condition, a large amount of harmful smoke dust is not generated,the defects that the smoke dust harms human health, pollutes the environment and the like are overcome, the problem of application limitation is solved, and the application range is wider.

Description

technical field [0001] The invention relates to the technical field of electric heating film, in particular to a flame-retardant electric heating film capable of shielding leakage current. Background technique [0002] The electric heating film is a kind of film that can generate heat after being energized. It is a planar heating element composed of an electrical insulating material and a heating resistor material packaged in it. [0003] In general, electrothermal film is a low-temperature electrothermal material with a working temperature of less than 200 °C. Because of its low power density, large heating area, thin thickness, high electrothermal conversion efficiency, strong far-infrared radiation ability, and long service life, it is widely used in construction. Heating of objects (including civil, public, industrial, field and temporary buildings, etc.); heating and insulation of industrial tanks and pipes; supplementary heating of agricultural breeding seedlings and g...

Claims

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Application Information

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IPC IPC(8): H05B3/36
CPCH05B3/36
Inventor 崔秋檀谢建军
Owner 北京烯研科技有限公司