Graphene heating film capable of improving leakage current index

Abstract

The graphene heating film capable of improving the leakage current index comprises a pet base film and a graphene heating coating, the upper side and the lower side of the pet base film are connected with a polyimide composite film layer and a protective film layer respectively, the upper side of the polyimide composite film layer is connected with a waterproof film layer, and the lower side of the polyimide composite film layer is connected with a graphene heating coating. The upper side of the polyimide composite film layer is further coated with an upper magnesium oxide powder coating, and the upper side of the protective film layer is coated with a lower magnesium oxide powder coating. According to the utility model, the thermal conductivity and the heating performance of the graphene heating coating are ensured through the magnesium oxide powder coatings, and leakage current possibly generated by the graphene heating coating can be blocked, so that the purpose of reducing the leakage current of the graphene heating coating is achieved, and through the design of the magnesium oxide powder coatings on the upper side and the lower side, the heat conductivity and the heating performance of the graphene heating coating are improved. Therefore, the purpose of double-sided leakage current reduction of the graphene heating coating is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of graphene heating film, especially to a graphene heating film capable of improving leakage current index. BACKGROUND

[0002] Graphene is a kind of carbon nanomaterial, which has extremely high conductivity and thermal conductivity. These characteristics enable graphene heating coating to quickly conduct heat, improve heating efficiency, and magnesium oxide has excellent insulation performance and high thermal conductivity, which makes it an ideal insulating material.

[0003] However, when graphene is in contact with electronic devices that need to be heated and heated, the high conductivity of graphene itself will cause a certain leakage current, thereby affecting the service life and stability of the electronic devices. SUMMARY

[0004] The utility model aims at improving a graphene heating film capable of improving leakage current index to overcome the above problems or at least partially solve the above problems.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] The utility model discloses a graphene heating film capable of improving leakage current index, which comprises a pet base film and a graphene heating coating, the graphene heating coating is attached to the upper surface of the pet base film, the upper side and the lower side of the pet base film are respectively connected with a polyimide composite film layer and a protective film layer, the upper side of the polyimide composite film layer is connected with a waterproof film layer, the upper side of the polyimide composite film layer is also coated with an upper magnesium oxide powder coating layer, the upper magnesium oxide powder coating layer is arranged between the polyimide composite film layer and the waterproof film layer, the upper side of the protective film layer is coated with a lower magnesium oxide powder coating layer, and the lower magnesium oxide powder coating layer is arranged between the protective film layer and the pet base film.

[0007] The graphene heating coating comprises a graphene coating and an electrode sheet, the electrode sheet is connected to the two ends of the graphene coating, and the graphene coating and the electrode sheet are attached to the pet base film.

[0008] The utility model discloses a graphene heating film capable of improving leakage current index, which has the beneficial effects that the magnesium oxide powder coating layer ensures the thermal conductivity and heating performance of the graphene heating coating, and can block the leakage current that may be generated by the graphene heating coating, achieving the purpose of reducing the leakage current of the graphene heating coating. The upper and lower magnesium oxide powder coating layers achieve the purpose of reducing the leakage current of the graphene heating coating on both sides, expand the application range and improve the use effect. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0010] Figure 1 It is an explosive structure diagram of the present application.

[0011] In the figure: 1, pet base film; 2, graphene heating coating; 3, polyimide composite film layer; 4, upper magnesium oxide powder coating; 5, waterproof film layer; 6, lower magnesium oxide powder coating; 7, protective film layer. DETAILED DESCRIPTION

[0012] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are intended to enable a more thorough understanding of the present disclosure and to convey the full scope of the present disclosure to those skilled in the art.

[0013] Referring to Figure 1 The present application improves a graphene heating film that can improve leakage current indicators, which comprises a pet base film 1 and a graphene heating coating 2. The graphene heating coating 2 is attached to the upper surface of the pet base film 1. The upper side and the lower side of the pet base film 1 are respectively connected to a polyimide composite film layer 3 and a protective film layer 7. The upper side of the polyimide composite film layer 3 is connected to a waterproof film layer 5. The upper side of the polyimide composite film layer 3 is also coated with an upper magnesium oxide powder coating 4. The upper magnesium oxide powder coating 4 is arranged between the polyimide composite film layer 3 and the waterproof film layer 5. The upper side of the protective film layer 7 is coated with a lower magnesium oxide powder coating 6. The lower magnesium oxide powder coating 6 is arranged between the protective film layer 7 and the pet base film 1.

[0014] The graphene heating coating 2 comprises a graphene coating and an electrode sheet. The electrode sheet is connected to both ends of the graphene coating, and both the graphene coating and the electrode sheet are attached to the pet base film 1.

[0015] The utility model discloses in the use process, the electrode piece is connected with the power supply of outside to the power supply of graphene heating coating 2 carries out, and graphene heating coating 2 passes through the conductivity and the heat conductivity of itself, can carry out heat conduction and heating for the electronic device needing to heat, and through the magnesium oxide powder coating 4 of setting up on the two sides of graphene heating coating 2 and the magnesium oxide powder coating 6 of below, can pass through the excellent insulation and thermal conductivity of itself, can carry out the barrier to the leakage current that graphene heating coating 2 can produce simultaneously with the heat conductivity and heating performance of guaranteeing graphene heating coating 2, has realized the purpose of reducing graphene heating coating 2 leakage current, has guaranteed the use stability and life of electronic device, and moreover through the design of magnesium oxide powder coating of upper and lower two sides, then realized the purpose of double -sided reduction leakage current of graphene heating coating 2, has expanded the scope of application, improved use effect.

[0016] Polyimide is a kind of polymer material, and by adding halogen-free flame retardant (such as organic silicon flame retardant) and excellent transparent material (such as polymethyl methacrylate), a composite film with both flame retardance and good transparency can be prepared. This composite film not only has good heat resistance and flame retardance, but also has high light transmittance.

[0017] The above is only the embodiment of the present application and is not used to limit the present application. The present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A graphene heating film capable of improving a leakage current index, comprising a pet base film (1) and a graphene heating coating layer (2), characterized in that, The graphene heating coating (2) is attached to the upper surface of the pet base film (1), the upper side and the lower side of the pet base film (1) are respectively connected with a polyimide composite film layer (3) and a protective film layer (7), the upper side of the polyimide composite film layer (3) is connected with a waterproof film layer (5), the upper side of the polyimide composite film layer (3) is also coated with an upper magnesium oxide powder coating (4), the upper magnesium oxide powder coating (4) is arranged between the polyimide composite film layer (3) and the waterproof film layer (5), and the upper side of the protective film layer (7) is coated with a lower magnesium oxide powder coating (6), the lower magnesium oxide powder coating (6) is arranged between the protective film layer (7) and the pet base film (1). 2.The graphene heating film capable of improving a leakage current index according to claim 1, wherein the graphene heating film is characterized by, The graphene heating coating (2) comprises a graphene coating and an electrode sheet, the electrode sheet is connected to both ends of the graphene coating, and the graphene coating and the electrode sheet are both attached to the pet base film (1).

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