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Method for preparing electrothermal film by adopting transparent graphene

A graphene film and electric heating film technology, applied in electric heating devices, ohmic resistance heating, ohmic resistance heating circuit diagrams, etc., can solve problems such as small size, potential safety hazards, and inability to monitor the surface temperature of electric heating films in a large range

Inactive Publication Date: 2021-05-14
安徽宇航派蒙健康科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of thermistor (temperature sensor, using PTC or NTC effect) is small in size, can only monitor a very small area, and cannot monitor the temperature of the surface of the electrothermal film in a large range. Once the temperature of the electrothermal film is out of control, there are potential safety hazards and defects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing an electrothermal film by using transparent graphene, specifically:

[0035] 1) Select a transparent PET film with a thickness of 50 microns, transfer two layers of graphene film on its surface, and the film square resistance is 150ohm / sq; in addition, at the edge of the PET, adopt a laser cutting process to prepare exposure holes for NTC circuit terminals;

[0036] 2) Print conductive silver paste on the surface of graphene to form an electrode of the heating layer of the electric heating film;

[0037]3) Select a 50-micron-thick PET packaging substrate, and cover its surface with a 20-micron-thick photosensitive dry film. Subsequently, through exposure and development processes, a U-shaped pattern with a groove width of 150 microns was obtained.

[0038] 4) On the surface of the PET-U photosensitive adhesive pattern, a layer of NTC thermosensitive film is prepared by vacuum magnetron sputtering method, the film thickness is 2 microns, and the N...

Embodiment 2

[0042] A method for preparing an electrothermal film by using transparent graphene, specifically:

[0043] 1) Select a transparent PET film with a thickness of 100 microns, transfer a layer of graphene film on its surface, and the film square resistance is 320ohm / sq; in addition, adopt a laser cutting process at the edge of the PET to prepare exposure holes for PTC circuit terminals;

[0044] 2) Print conductive silver paste on the surface of graphene to form an electrode of the heating layer of the electric heating film;

[0045] 3) Select a 50-micron-thick PET packaging substrate, and cover its surface with a 20-micron-thick photosensitive dry film. Subsequently, through exposure and development processes, a U-shaped pattern with a groove width of 150 microns was obtained.

[0046] 4) On the surface of the PET-U photosensitive adhesive pattern, a layer of PTC thermosensitive film is prepared by vacuum magnetron sputtering method, and the thickness of the film is 2 microns. ...

Embodiment 3

[0051] A method for preparing an electrothermal film by using transparent graphene, specifically:

[0052] 1) Select a transparent PET film with a thickness of 10 microns, transfer 10 layers of graphene film on its surface, and the film square resistance is 110ohm / sq; in addition, adopt a laser cutting process at the edge of the PET to prepare exposure holes for PTC circuit terminals;

[0053] 2) Print conductive silver paste on the surface of graphene to form an electrode of the heating layer of the electric heating film;

[0054] 3) Select a 10-micron-thick PET packaging substrate, and cover its surface with a 20-micron-thick photosensitive dry film. Subsequently, through exposure and development processes, a U-shaped pattern with a groove width of 150 microns was obtained.

[0055] 4) On the surface of the PET-U photosensitive adhesive pattern, a layer of PTC thermosensitive film is prepared by vacuum magnetron sputtering method, and the thickness of the film is 2 microns....

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PUM

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Abstract

The invention discloses a method for preparing an electrothermal film by adopting transparent graphene. The method comprises the following steps: S1, transferring a graphene film on the surface of a flexible substrate; S2, printing a silver paste electrode on the surface of the graphene film to obtain a flexible substrate-graphene film-electrode composite structural member; S3, taking a flexible packaging film, forming a PTC or NTC thermosensitive film monitoring circuit on the surface of the packaging film by adopting a vacuum coating process, and covering a layer of OCA on the surface of the PTC or NTC thermosensitive film monitoring circuit to obtain a PI-PTC / NTC layer-OCA structural component; and S4, attaching and baking the flexible substrate-graphene film-electrode composite structural component prepared in step S2 and the PI-PTC / NTC layer-OCA adhesive structural component prepared in step S3, and a flexible substrate-graphene film-electrode-OCA adhesive-PTC / NTC layer-flexible packaging film structure is obtained.

Description

technical field [0001] The invention relates to the field of electrothermal film preparation, in particular to a preparation method for obtaining a flexible electrothermal film with thermal protection function by arranging a thermistor layer. Background technique [0002] In recent years, with the upgrading of consumption and the development of the health industry, various flexible heating application products (such as heating clothing, heating protective gear, etc.) have been continuously launched in the market, especially graphene far-infrared health physiotherapy products have achieved rapid development. And has been recognized by consumers. Graphene far-infrared health physiotherapy products can emit far-infrared light waves, and the wavelength range mainly falls in the range of 6-14 microns. The far-infrared rays in this range are more easily absorbed by the human body. valued by those. In addition, various graphene flexible electrothermal film products for floor heat...

Claims

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Application Information

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IPC IPC(8): H05B3/34H05B3/00H05B3/03H05B1/02
CPCH05B1/0202H05B1/0294H05B3/0019H05B3/03H05B3/34
Inventor 谭化兵潘卓成潘智军
Owner 安徽宇航派蒙健康科技股份有限公司