Graphene inorganic composite heating body

Abstract

The utility model discloses a graphene inorganic composite heating body, and relates to the technical field of graphene heating bodies. The graphene inorganic composite heating body comprises a graphene heating film, two electrode terminals are arranged on the graphene heating film, the two electrode terminals can be connected with a wire connected with a power supply, the upper surface of the graphene heating film is fixedly connected with a first insulating covering film, the lower surface of the graphene heating film is fixedly connected with a second insulating covering film, and the first insulating covering film and the second insulating covering film are arranged on the graphene heating film. The first insulating film and the second insulating film are made of PET polyester films, have the advantages of high temperature resistance, voltage resistance and good insulativity, can comprehensively protect the graphene heating film, and can well protect the graphene heating film by arranging the first insulating film, the second insulating film, the mica plate and the partition layer. And the graphene inorganic composite heating element has relatively strong electrical insulation performance, so that potential safety hazards in use are reduced, and the use safety of the graphene inorganic composite heating element is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of graphene heating elements, in particular to a graphene inorganic composite heating element. Background Art

[0002] A graphene heating plate with a publication number of CN207518876U. The utility model discloses a graphene heating plate, wherein the graphene heating layer is composed of an upper heating part and a lower heating part, and the unit area gram weight of the graphene material in the upper heating part is lower than the unit area gram weight of the graphene material in the lower heating part; a metal current-carrying layer forming an electrode is also provided on the graphene heating layer. This graphene heating plate arranges the graphene heating layer into an upper heating part and a lower heating part, so that the upper heating part has lower power than the lower heating part. Combined with the thermodynamic principle of "cold air is heavy, warm air is light", the lower heating part has a large power and a higher heating temperature. Part of the heat rises to supplement the temperature of the upper heating part, so that the overall surface temperature of the heating plate is more uniform, and it has the advantages of safety, reliability, energy saving and environmental protection.

[0003] However, the above-mentioned graphene heating plate has the disadvantage that the insulation effect of the graphene heating layer is poor, which may easily cause safety hazards during use. Therefore, a graphene inorganic composite heating element with good insulation effect is needed. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a graphene inorganic composite heating element that can solve the problem that the insulation effect of the graphene heating layer is poor and safety hazards may easily arise during use.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solutions: a graphene inorganic composite heating element, comprising a graphene heating film, on which two electrode terminals are arranged, and both electrode terminals can be connected to a wire connected to a power source;

[0008] Among them, the upper surface of the graphene heating film is fixedly connected with a first insulating film, and the lower surface of the graphene heating film is fixedly connected with a second insulating film. The materials of the first insulating film and the second insulating film are both PET polyester film, which has the advantages of high temperature resistance and good voltage resistance and insulation, and can provide comprehensive protection for the graphene heating film.

[0009] Preferably, the upper surface of the first insulating coating is fixedly connected to a first waterproof film, and the lower surface of the second insulating coating is fixedly connected to a second waterproof film. By arranging the first waterproof film and the second insulating coating, the graphene heating film can be waterproofed, reducing the impact of external water on the graphene heating film.

[0010] Preferably, a mica board is fixedly connected to the upper surface of the first insulating film, and the mica board is an HP-8 hard phlogopite mica board with excellent electrical insulation performance.

[0011] Preferably, a heat-insulating layer is fixedly connected to the lower surface of the second waterproof membrane, and a high-temperature resistant transparent flame-retardant coating is sprayed on the heat-insulating layer. The heat-insulating layer is made of a heat-insulating extruded board, which can support the overall temperature increase of the graphene heating film.

[0012] Preferably, a partition layer is provided around the graphene heating film to provide protective wrapping for the graphene heating film.

[0013] Preferably, the isolation layer is fixedly connected to the thermal insulation layer and the mica board. The isolation layer is made of aluminum oxide, which has a large specific surface area, a small dielectric constant, and a high dielectric strength. It can effectively prevent the flow of current, thereby having good insulation properties and high high temperature resistance.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The graphene inorganic composite heating element, by providing the first insulating film and the second insulating film, the mica board and the isolation layer, can play a good protective role on the graphene heating film, and all of them have strong electrical insulation performance, reduce the potential safety hazards in use, and improve the safety of use of the graphene inorganic composite heating element.

[0017] (2) The graphene inorganic composite heating element has a heat insulation layer made of a heat insulation extruded board, which can support the overall temperature increase of the graphene heating film. The high temperature resistant transparent flame retardant coating has the characteristics of high temperature resistance, transparency, flame retardancy and oxidation resistance, which improves the service life and high temperature resistance of the heat insulation layer. The graphene heating film is surrounded by a partition layer to provide a protective wrapping for the graphene heating film.

[0018] (3) The graphene inorganic composite heating element can play a waterproof role on the graphene heating film by setting the first waterproof film and the second insulating coating, reduce the influence of external water on the graphene heating film, and improve the waterproofness of the graphene heating film. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the surface of the first waterproof membrane of the utility model;

[0022] Figure 3 This is a schematic diagram of the surface of the first insulating film of the utility model;

[0023] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0024] Figure numerals: 1. thermal insulation layer; 2. high temperature resistant transparent flame retardant coating; 3. partition layer; 4. mica board; 5. electrode terminal; 6. first waterproof film; 7. first insulating coating; 8. second waterproof film; 9. second insulating coating; 10. graphene heating film. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] See also Figure 1-4The utility model provides a technical solution: a graphene inorganic composite heating element, comprising a graphene heating film 10, on which two electrode terminals 5 are arranged, and the two electrode terminals 5 can be connected to a wire connected to a power source;

[0030] Among them, the upper surface of the graphene heating film 10 is fixedly connected with the first insulating film 7, and the lower surface of the graphene heating film 10 is fixedly connected with the second insulating film 9. The materials of the first insulating film 7 and the second insulating film 9 are both PET polyester film, which has the advantages of high temperature resistance and good voltage resistance insulation, and can provide comprehensive protection for the graphene heating film 10.

[0031] Furthermore, the upper surface of the first insulating film 7 is fixedly connected to the first waterproof film 6, and the lower surface of the second insulating film 9 is fixedly connected to the second waterproof film 8. By arranging the first waterproof film 6 and the second insulating film 9, the graphene heating film 10 can be waterproofed, the influence of external water on the graphene heating film 10 can be reduced, and the waterproofness of the graphene heating film 10 can be improved.

[0032] Furthermore, a mica board 4 is fixedly connected to the upper surface of the first insulating coating 7. The mica board 4 is an HP-8 hard gold mica board, which is golden in color, has a temperature resistance of 850°C under continuous use conditions, and a temperature resistance of 1050°C under intermittent use conditions. It has excellent electrical insulation properties and can be continuously heated at temperatures above 100°C.

[0033] Furthermore, the lower surface of the second waterproof membrane 8 is fixedly connected with a heat insulation layer 1, and a high temperature resistant transparent flame retardant coating 2 is sprayed on the heat insulation layer 1. The material of the heat insulation layer 1 is a heat insulation extruded board, which can support the overall temperature increase of the graphene heating film 10. The high temperature resistant transparent flame retardant coating 2 has the characteristics of high temperature resistance, transparency, flame retardancy, and oxidation resistance, which improves the service life and high temperature resistance of the heat insulation layer 1;

[0034] Furthermore, a partition layer 3 is provided around the graphene heating film 10 to protect and wrap the graphene heating film.

[0035] Furthermore, the isolation layer 3 is fixedly connected to the insulation layer and the mica board 4. The material of the isolation layer 3 is aluminum oxide, which has a large specific surface area, a small dielectric constant, and a high dielectric strength. It can effectively prevent the flow of current, thereby having good insulation properties and high high temperature resistance. By setting the first insulating film 7 and the second insulating film 9, the mica board 4 and the isolation layer 3, the graphene heating film 10 can be well protected, and they all have strong electrical insulation properties, thereby reducing safety hazards in use and improving the safety of use of the graphene inorganic composite heating element.

[0036] Working principle: the first insulating film 7 and the second insulating film 9 are made of PET polyester film, which has the advantages of high temperature resistance, good voltage resistance and insulation, and can provide comprehensive protection for the graphene heating film 10. By setting the first waterproof film 6 and the second insulating film 9, the graphene heating film 10 can be waterproofed to reduce the impact of external water on the graphene heating film 10. The mica board 4 is HP-8 hard gold mica board, which is golden in color. It can withstand a temperature of 850°C under continuous use and 1050°C under intermittent use. It has excellent electrical insulation performance and can be continuously heated at temperatures above 100°C. The material of the thermal insulation layer 1 is an insulating extruded board, which can provide support for the overall temperature increase of the graphene heating film 10. The high-temperature resistant transparent flame-retardant coating 2 has the characteristics of high temperature resistance, transparency, flame retardancy, and oxidation resistance. By setting the first insulating film 7 and the second insulating film 9, the mica board 4 and the partition layer 3, the graphene heating film 10 can be well protected, and they all have strong electrical insulation performance, reducing safety hazards in use.

[0037] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A graphene inorganic composite heating element, characterized in that: include: Graphene heating film (10); Two electrode terminals (5) are provided on the graphene heating film (10), and both electrode terminals (5) can be connected to a wire connected to a power source; The upper surface of the graphene heating film (10) is fixedly connected to a first insulating film (7), and the lower surface of the graphene heating film (10) is fixedly connected to a second insulating film (9), and the materials of the first insulating film (7) and the second insulating film (9) are both PET polyester films; The upper surface of the first insulating film (7) is fixedly connected to a first waterproof film (6), and the lower surface of the second insulating film (9) is fixedly connected to a second waterproof film (8), and the first waterproof film (6) and the second insulating film (9) are provided to provide a waterproof effect on the graphene heating film (10); The upper surface of the first insulating coating (7) is fixedly connected with a mica board (4), and the mica board (4) is an HP-8 hard phlogopite mica board; The lower surface of the second waterproof membrane (8) is fixedly connected to a heat insulation layer (1), and a high-temperature resistant transparent flame-retardant coating (2) is sprayed on the heat insulation layer (1). The heat insulation layer (1) is made of a heat-insulating extruded board, which can provide support for increasing the temperature of the graphene heating film (10) as a whole.

2. A graphene inorganic composite heating element according to claim 1, characterized in that: The graphene heating film (10) is provided with a partition layer (3) on all four sides, which is used to protect and wrap the graphene heating film.

3. A graphene inorganic composite heating element according to claim 2, characterized in that: The isolation layer (3) is fixedly connected to the heat insulation layer and the mica board (4), and the material of the isolation layer (3) is aluminum oxide.

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