Self-adhesive insulating mica paper

Abstract

The utility model discloses self-adhesive insulating mica paper which comprises a mica paper base body, a self-adhesive functional composite layer and a release film layer are sequentially formed on the surface of one side of the mica paper base body, and the self-adhesive functional composite layer comprises a substrate layer and a self-adhesive glue layer; the substrate layer is of a composite film layer structure and comprises an insulating film layer and a macromolecule organic film layer, and the insulating film layer is attached to the surface of the mica paper base body and is integrally formed with the mica paper base body; dot matrix holes are uniformly formed in the polymer organic film layer, and the polymer organic film layer serves as an interface layer and is formed between the self-adhesive layer and the insulating film layer; the release film layer is formed on the surface of the self-adhesive layer and is of a removable structure. The mica paper provided by the utility model can be quickly fixed on an insulation contact surface without the assistance of extra glue or other pasting tools, so that the installation efficiency is greatly improved, and meanwhile, the stability and the insulation effect of the mica paper are also ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of paper insulation materials, in particular to a self-adhesive insulating mica paper mainly used in electronic products. Background Art

[0002] Mica paper is an insulating material, mainly made of mica minerals, which are broken into pulp and paper by thermochemical or hydraulic stripping, and then cut into shape. Mica paper has excellent electrical insulation, mechanical strength, heat resistance, stability and corrosion resistance due to its highly arranged mica sheet structure. It can be cut and folded, and is widely used as an insulating material in the electrical and energy industries.

[0003] As the capacity of power generation units continues to increase, the demand for mica paper continues to grow every year. In addition, a large amount of mica paper is also required as an insulation material during the maintenance and replacement of power generation equipment.

[0004] At present, the assembly and use of mica paper mainly involves fixing the mica paper on the part that requires insulation through adhesives or other auxiliary materials. This processing method is not only inefficient, but also has the problems of cumbersome operation, time-consuming and high cost. In addition, there is the problem of residual glue during equipment maintenance and component replacement, which will hinder the equipment maintenance and component replacement process. At the same time, the use of adhesives may also introduce additional chemical pollution, causing potential adverse effects on the molding quality of the contact surface or the health of operators. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a self-adhesive insulating mica paper to solve the shortcomings of the above-mentioned background technology.

[0006] The technical problem solved by the utility model is achieved by the following technical solutions:

[0007] A self-adhesive insulating mica paper comprises a mica paper substrate, wherein a self-adhesive functional composite layer and a release film layer are sequentially formed on a single side surface of the mica paper substrate, wherein the self-adhesive functional composite layer comprises a substrate layer and a self-adhesive layer; the substrate layer is a composite film layer structure, comprising an insulating film layer and a polymer organic film layer, wherein the insulating film layer is attached to the surface of the mica paper substrate and is formed as a whole with the mica paper substrate; dot matrix holes are uniformly formed on the polymer organic film layer, and the polymer organic film layer is formed as an interface layer between the self-adhesive layer and the insulating film layer; the release film layer is formed on the surface of the self-adhesive layer and is a removable structure.

[0008] As a further limitation, the mica paper substrate is phlogopite paper or muscovite paper with a thickness of 0.2 to 0.5 mm.

[0009] As a further limitation, the self-adhesive layer is consistent in size with the mica paper substrate, and an adhesive surface is formed on the surface of the self-adhesive layer to achieve surface bonding;

[0010] A strip-shaped heat-conducting material is formed between the self-adhesive layer and the polymer organic film layer. The strip-shaped heat-conducting material is a strip-shaped carbon fiber film or a strip-shaped graphene arranged in parallel and at intervals. The surface of the strip-shaped heat-conducting material is sealed and leveled by the self-adhesive layer.

[0011] As a further limitation, the self-adhesive layer is formed with a plurality of parallel and spaced strip-shaped adhesive surfaces, and the extending direction of the strip-shaped adhesive surfaces is consistent with the length direction of the mica paper substrate;

[0012] The ratio of the tape width to the tape spacing of the tape-shaped adhesive surface in the self-adhesive layer is 2:1 to 5:2.

[0013] As a further limitation, the self-adhesive layer is formed by polyurethane adhesive, epoxy resin adhesive or polyolefin adhesive, and the thickness of the adhesive layer is controlled to be 0.01 to 0.03 mm;

[0014] The self-adhesive layer is mixed with a conductive filler in a mass ratio of 1 to 3 wt %, and the conductive filler is evenly dispersed in the self-adhesive layer.

[0015] As a further limitation, the insulating film layer is a polyester film or a polyimide film, and its thickness is controlled between 0.05 and 0.15 mm.

[0016] As a further limitation, the polymer organic film layer is a polyvinyl butyral film layer or a polyacrylate film layer, and its thickness is controlled between 0.002 and 0.005 mm.

[0017] As a further limitation, the release film layer is polyethylene terephthalate.

[0018] Beneficial effects: The self-adhesive insulating mica paper of the utility model realizes the self-adhesiveness of the mica paper by sequentially forming a self-adhesive functional composite layer and a release film layer on the single-side surface of the mica paper substrate. When in use, it only needs to be cut according to size and then the release film can be removed to directly paste it on the part that needs insulation. The mica paper can be fixed on the part that needs insulation without using adhesives or other auxiliary materials, which greatly simplifies the assembly process of the mica paper, reduces the operating cost, and avoids the problem of chemical pollution that may be introduced, making it more environmentally friendly and safe. At the same time, the strip-shaped thermal conductive material in the self-adhesive functional composite layer can effectively improve the thermal conductivity of the mica paper, which is conducive to heat dissipation and reducing temperature rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model.

[0020] Among them: 1. Mica paper substrate; 2. Insulating film layer; 3. Polymer organic film layer; 4. Strip thermal conductive material; 5. Self-adhesive layer; 6. Release film layer; 7. Array holes. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0022] See also Figure 1 A preferred embodiment of a self-adhesive insulating mica paper is provided. In this embodiment, the self-adhesive insulating mica paper uses phlogopite mica paper with a thickness of 0.32 mm as the mica paper substrate 1 to ensure sufficient extrusion mechanical strength and electrical insulation performance of the mica paper.

[0023] One side of the mica paper substrate 1 is the component contact surface, and an insulating film layer 2 is formed on its surface. The insulating film layer 2 is made of polyester film, and its thickness is controlled at 0.1mm, ensuring good insulation performance and mechanical strength; the insulating film layer 2 is formed on the surface of the mica paper substrate 1 by an existing molding method in the prior art (such as gluing, hot pressing).

[0024] A polymer organic film layer 3 is formed on the surface of the insulating film layer 2. The polymer organic film layer 3 is made of polyvinyl butyral film layer with a thickness controlled at 0.003 mm, and is used as an interface layer between the self-adhesive layer 5 and the insulating film layer 2. At the same time, dot matrix holes 7 are uniformly formed on the polymer organic film layer 3. These dot matrix holes 7 not only help to increase the adhesion, but also enhance the air permeability of the material.

[0025] In different embodiments, the self-adhesive layer 5 has two configurations, one of which is to configure a plurality of parallel and spaced strip-shaped adhesive surfaces, the extension direction of which is consistent with the length direction of the mica paper substrate 1, and the ratio of the width of the strip-shaped adhesive surface to the spacing between the strips is 3:2, so as to ensure sufficient adhesion while reducing the amount of adhesive surface used, thereby reducing costs.

[0026] Another arrangement is to design the self-adhesive layer 5 as a full-coverage type as shown in this embodiment, that is, to evenly form the adhesive layer on the entire self-adhesive functional composite layer to form a uniform adhesive surface to provide a more uniform and stable adhesive force. The self-adhesive layer 5 uses a polyurethane adhesive, and the thickness of the adhesive layer is controlled at 0.02 mm, which ensures sufficient adhesive force and is easy to control.

[0027] In this embodiment, a strip-shaped thermally conductive material 4 is further formed on the surface of the polymer organic film layer 3. The strip-shaped thermally conductive material 4 has multiple strips in the width direction of the mica paper. These strip-shaped thermally conductive materials 4 are made of strip-shaped carbon fiber films arranged in parallel and spaced apart. They are evenly and parallelly arranged on the surface of the polymer organic film layer 3. The polymer organic film layer 3 is sealed and leveled on the outer surface by the self-adhesive layer 5, which ensures the thermal conductivity while not affecting the adhesion performance of the self-adhesive layer 5.

[0028] The arrangement of the strip-shaped thermal conductive material 4 significantly improves the thermal conductivity of the mica paper, helps to evenly dissipate heat, and reduces temperature rise, thereby ensuring efficient and stable operation of the electronic equipment. In another embodiment, the adhesive layer 5 may be mixed with a conductive filler with a mass ratio of 2wt%, and the conductive filler is evenly dispersed in the self-adhesive layer 5, which not only enhances the conductivity of the mica paper, but also helps to release static electricity, thereby improving the safety of use.

[0029] In this embodiment, a release film layer 6 is formed on the surface of the self-adhesive layer 5. The release film layer 6 is made of polyethylene terephthalate and has a removable structure. When in use, it only needs to be gently removed to expose the adhesive surface for the pasting operation.

[0030] In actual applications, the user can cut mica paper pieces of appropriate size from the self-adhesive insulating mica paper according to the size of the part to be insulated, then remove the release film layer 6 and directly stick the mica paper pieces on the part to be insulated. The assembly of the mica paper can be completed without using additional adhesives or other auxiliary materials.

[0031] This self-adhesive insulating mica paper has excellent electrical insulation performance, mechanical strength and heat resistance, and also achieves self-adhesion through the design of the self-adhesive functional composite layer and the release film layer, which not only simplifies the assembly process and reduces the operating cost, but also avoids the problem of chemical pollution that may be introduced, and is more environmentally friendly and safe. At the same time, the strip-shaped thermal conductive material 4 in its self-adhesive functional composite layer can effectively improve the thermal conductivity of the mica paper, which is conducive to heat dissipation and reducing temperature rise, effectively improving the thermal conductivity of the mica paper, and further ensuring the efficient and stable operation of electronic equipment.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A self-adhesive insulating mica paper, characterized in that: It comprises a mica paper substrate, wherein a self-adhesive functional composite layer and a release film layer are sequentially formed on a single side surface of the mica paper substrate, wherein the self-adhesive functional composite layer comprises a substrate layer and a self-adhesive layer; the substrate layer is a composite film layer structure, comprising an insulating film layer and a polymer organic film layer, wherein the insulating film layer is attached to the surface of the mica paper substrate and is formed as a whole with the mica paper substrate; dot matrix holes are uniformly formed on the polymer organic film layer, and the polymer organic film layer is formed as an interface layer between the self-adhesive layer and the insulating film layer; the release film layer is formed on the surface of the self-adhesive layer and is a removable structure.

2. The self-adhesive insulating mica paper according to claim 1, characterized in that: The mica paper substrate is phlogopite paper or muscovite paper, and has a thickness of 0.2-0.5 mm.

3. The self-adhesive insulating mica paper according to claim 1, characterized in that: The self-adhesive layer is consistent in size with the mica paper substrate, and an adhesive surface is formed on the surface of the self-adhesive layer to achieve surface bonding; A strip-shaped heat-conducting material is formed between the self-adhesive layer and the polymer organic film layer. The strip-shaped heat-conducting material is a strip-shaped carbon fiber film or a strip-shaped graphene arranged in parallel and at intervals. The surface of the strip-shaped heat-conducting material is sealed and leveled by the self-adhesive layer.

4. The self-adhesive insulating mica paper according to claim 1, characterized in that: The self-adhesive layer is formed with a plurality of parallel and spaced strip-shaped adhesive surfaces, and the extending direction of the strip-shaped adhesive surfaces is consistent with the length direction of the mica paper substrate.

5. The self-adhesive insulating mica paper according to claim 4, characterized in that: The ratio of the tape width to the tape spacing of the tape-shaped adhesive surface in the self-adhesive layer is 2:1~5:

2.

6. The self-adhesive insulating mica paper according to claim 1, characterized in that: The self-adhesive layer is formed by using polyurethane adhesive, epoxy resin adhesive or polyolefin adhesive, and the thickness of the adhesive layer is controlled to be 0.01-0.03 mm.

7. The self-adhesive insulating mica paper according to claim 1, characterized in that: The insulating film layer is a polyester film or a polyimide film, and its thickness is controlled between 0.05 and 0.15 mm.

8. The self-adhesive insulating mica paper according to claim 1, characterized in that: The polymer organic film layer is a polyvinyl butyral film layer or a polyacrylate film layer, and its thickness is controlled between 0.002 and 0.005 mm.

9. The self-adhesive insulating mica paper according to claim 1, characterized in that: The release film layer is polyethylene terephthalate.

Images