CN212086511U

CN212086511U - Electroluminescence thin film

Info

Publication number: CN212086511U
Application number: CN202021011190.4U
Authority: CN
Inventors: 余建平; 占春艳
Original assignee: Jingdezhen Global Light Technology Co ltd
Current assignee: Huazhe Guangdong New Material Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-04
Anticipated expiration: 2030-06-05

Abstract

The application relates to an electrogenerated heating film, which comprises a basal layer and a heating layer, wherein the heating layer is arranged in the basal layer and used for heating when being electrified, and the basal layer is a polyimide film. By adopting the polyimide film as the substrate layer, the electro-heating film can work at the temperature of more than 150 ℃, and can adapt to high-temperature application scenes.

Description

Electroluminescence thin film

Technical Field

The application relates to the field of heating films, in particular to an electric heating film.

Background

In cold winter, heating equipment is essential for areas without indoor heating. The existing heating equipment generally generates heat after being electrified through various heating wires, most of the existing heating equipment is a high polymer heating film which can be widely applied to household equipment such as an electric blanket and the like, but the existing high polymer heating film usually works below 150 ℃ and is difficult to work for a long time above 150 ℃, otherwise, the high polymer heating film can be damaged, and a fire disaster can be caused in serious cases.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an electroluminescent thin film for solving the problems that the conventional polymer heating film usually works below 150 ℃ and is difficult to work above 150 ℃ for a long time, otherwise, the polymer heating film is damaged, and a fire is caused in serious cases.

The utility model provides an electrogenerated heating film, includes stratum basale and generates heat the layer, generate heat the layer set up in the stratum basale for generate heat when the circular telegram, the stratum basale is the polyimide film.

In one embodiment, the base layer comprises a first base layer and a second base layer, the first base layer and the second base layer are fixed with each other, and the heat generating layer is arranged between the first base layer and the second base layer.

In one embodiment, the heating layer includes a plurality of heating units, the plurality of heating units are electrically connected to each other, the plurality of heating units are arranged at intervals, a preset gap is formed between every two adjacent heating units, and the first substrate layer and the second substrate layer are fixedly connected at the gap between every two adjacent heating units.

In one embodiment, the infrared heating lamp further comprises a far infrared film which emits far infrared light when heated; the far infrared film is arranged between the heating layer and the basal layer.

In one embodiment, the far infrared film is a carbon nanotube far infrared film.

In one embodiment, the plurality of heating units of the heating layer are arranged on the far infrared film at preset intervals.

In one embodiment, the spacing of the plurality of heat generating units on the far infrared film is determined according to the heat generating power of the heat generating layer.

In one embodiment, the heat generating layer is at least partially embedded within at least one of the first and second substrate layers.

In one embodiment, the heat generating layer comprises a soft copper wire mesh and a metal hot melt adhesive film, and the soft copper wire mesh is arranged in the metal hot melt adhesive film.

In one embodiment, the soft copper wire mesh is embedded into the metal hot melt adhesive film by hot press lamination.

According to the electroluminescent film, the base layer is made of the polyimide film, so that the electroluminescent film can work at the temperature of more than 150 ℃, and can adapt to high-temperature application scenes.

Drawings

Fig. 1 is a schematic structural diagram of an electroluminescent thin film according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an electroluminescent thin film according to another embodiment of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, which schematically illustrates a structural diagram of an electroluminescent film 10 according to an embodiment of the present application, the electroluminescent film 10 includes a substrate layer 110 and a heat generating layer 120, the heat generating layer 120 is disposed in the substrate layer 110 and is used for generating heat when a power is turned on, and the substrate layer 110 is a polyimide film.

The polyimide film has outstanding high temperature resistance, radiation resistance, chemical corrosion resistance and electrical insulation performance, can be used in air at 250-280 ℃ for a long time, is used as the substrate layer 110, and can improve the working temperature of the electroluminescent thin film 10, so that the electroluminescent thin film 10 can stably work for a long time at the temperature of more than 150 ℃.

The base layer 110 may include a first base layer 111 and a second base layer 113, and the first base layer 111 and the second base layer 113 are fixed to each other, and the heat generating layer 120 is disposed between the first base layer 111 and the second base layer 113. When the first and

second base layers

111 and 113 are fixed, the heat generating layer 120 is fixed between the first and

second base layers

111 and 113. The first base layer 111 and the second base layer 113 are both polyimide films.

For example, the heat generating layer 120 may include a plurality of heat generating units electrically connected to each other, the plurality of heat generating units being spaced apart from each other with a predetermined gap between two adjacent heat generating units, and the first and

second substrate layers

111 and 113 being fixedly connected to each other at the gap between two adjacent heat generating units, thereby fixing the plurality of heat generating units between the first and

second substrate layers

111 and 113. For example, when the two first base layers 111 and the second base layer 113 are thermocompression bonded at a temperature of 350 ℃, the contact surfaces of the first base layer 111 and the second base layer 113 soften when they are brought into contact with each other, and the first base layer 111 and the second base layer 113 are fixed to each other.

In a specific embodiment, the thickness of the base layer 110 is less than the sum of the thicknesses of the first base layer 111 and the second base layer 113 before thermocompression bonding. For example, the thickness of the first base layer 111 and the second base layer 113 before the thermal compression bonding is 0.03mm, and the thickness of the base layer 110 after the thermal compression bonding is 0.05 mm.

The heat generating layer 120 is at least partially embedded in at least one of the first and

second substrate layers

111 and 113 to further reduce the thickness of the electroluminescent film 10.

The heating layer 120 may include a soft copper wire mesh and a metal hot melt adhesive film, and the soft copper wire mesh is disposed in the metal hot melt adhesive film. For example, a soft copper wire mesh is completely wrapped within a metal hot melt adhesive film. In a specific embodiment, the soft copper wire mesh is embedded into the metal hot melt adhesive film through hot pressing compounding. The soft copper wire mesh and the metal hot melt adhesive film can be compounded through hot pressing of the rotating shaft to form a film, namely the heating film. The soft copper wire mesh generates heat under the condition of being electrified, then is diffused by the metal hot melt adhesive film and then is diffused by the polyimide film, so that the high-power work of the soft copper wire mesh can be realized under the action of the double films of the metal hot melt adhesive film and the polyimide film, and the electric heating film 10 can stably work at the temperature of 150-500 ℃.

At least one of the length and the width of the heat generating layer 120 is smaller than the length and the width of the substrate layer 110. For example, to achieve complete encapsulation of the heat generating layer 120, the length of the heat generating layer 120 is less than the length of the base layer 110, and the width of the heat generating layer 120 is less than the width of the base layer 110.

Referring to fig. 2, in one or more embodiments, the infrared radiation source further includes a far infrared film 130, wherein the far infrared film 130 emits far infrared light when heated; the far infrared film 130 is disposed between the heat generating layer 120 and the base layer 110. For example, in the illustrated embodiment, the far infrared film 130 is disposed between the first base layer 111 and the heat generating layer 120. By arranging the far infrared film 130, the electrothermal film 10 emits far infrared light when in work, so that the electrothermal film has a health care function, and particularly, when being applied to an intelligent household product, the household product has a health care function.

In a specific embodiment, the far infrared film 130 is a carbon nanotube far infrared film.

The plurality of heating units of the heating layer 120 may be disposed at a predetermined interval on the far infrared film 130, so that the efficiency of the far infrared film 130 emitting far infrared light is adapted to the heating power of the heating layer 120, and the maximization is achieved. For example, the spacing of the plurality of heat generating units on the far infrared film 130 may be determined according to the heat generating power of the heat generating layer 120.

Specifically, when the electro-heating film 10 is manufactured, the heating layer 120 needs to be manufactured, the soft copper wire mesh and the metal hot-melt adhesive film are input between the pair of rotating shafts, the temperature of the rotating shafts reaches a preset value, the soft copper wire mesh and the metal hot-melt adhesive film are subjected to hot-pressing compounding through the rotating shafts, the soft copper wire mesh is embedded into the metal hot-melt adhesive film, and the heating layer 120 is obtained after the hot-pressing compounding. The far infrared film 130 is placed on the first base layer 111, and then the heat generating layer 120 is placed on the far infrared film 130 according to the designed power and arranged at the designed interval to cover the second base layer 113. And (3) performing hot-press bonding again, performing hot-press compounding on the first substrate layer 111 and the second substrate layer 113 at 350 ℃, connecting the first substrate layer 111 and the second substrate layer 113 in a compounding way, and packaging the far infrared film 130 and the heat generating layer 120 in the substrate layer 110.

In the above electroluminescent thin film 10, the base layer 110 is made of a polyimide thin film, so that the electroluminescent thin film 10 can operate at a temperature of more than 150 ℃, and can adapt to a high-temperature application scenario.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The electrothermal film is characterized by comprising a substrate layer and a heating layer, wherein the heating layer is arranged in the substrate layer and used for heating when electrified, and the substrate layer is a polyimide film.

2. An electro-heating film as claimed in claim 1, wherein the substrate layers comprise a first substrate layer and a second substrate layer, the first and second substrate layers being secured to each other, the heat generating layer being provided between the first and second substrate layers.

3. The electro-heating film as claimed in claim 2, wherein the heating layer comprises a plurality of heating units, the plurality of heating units are electrically connected to each other, the plurality of heating units are arranged at intervals, a preset gap is formed between two adjacent heating units, and the first substrate layer and the second substrate layer are fixedly connected to each other at the gap between two adjacent heating units.

4. The film of claim 3, further comprising a far infrared film that emits far infrared light when heated; the far infrared film is arranged between the heating layer and the basal layer.

5. The electro-thermal film according to claim 4, wherein the far infrared film is a carbon nanotube far infrared film.

6. An electrothermal film according to claim 4, wherein the plurality of heat generating units of the heat generating layer are arranged at predetermined intervals on the far infrared film.

7. An electrothermal film according to claim 6, wherein the spacing of the plurality of heat generating elements on the far infrared film is determined in accordance with the heating power of the heat generating layer.

8. An electro-thermal film as claimed in claim 2 wherein the heat generating layer is at least partially embedded within at least one of the first and second substrate layers.

9. The electro-thermal film according to claim 1, wherein the heat-generating layer comprises a soft copper wire mesh and a metal hot-melt adhesive film, and the soft copper wire mesh is disposed in the metal hot-melt adhesive film.

10. An electro-thermal film according to claim 9, wherein said soft copper wire mesh is embedded in said metal-hot-melt adhesive film by hot-press lamination.