High-shielding mica paper

Abstract

The utility model discloses high-shielding mica paper, relates to the technical field of mica paper, and aims to solve the problems that traditional mica paper cannot meet requirements and is poor in practicability when the mica paper is used in occasions with high electromagnetic shielding requirements in the prior art. The mica paper body comprises a mica paper base layer I, a metal shielding layer, a heat conducting layer, a reinforcing layer and a mica paper base layer II which are sequentially arranged from top to bottom, and the mica paper further comprises a shielding reinforcing layer which is arranged between the metal shielding layer and the heat conducting layer. The shielding reinforcing layer comprises a plurality of stainless steel transverse fibers which are distributed at equal intervals, a plurality of stainless steel vertical fibers which are distributed at equal intervals are arranged among the stainless steel transverse fibers, and the metal shielding layer is made of an aluminum foil material.

Description

Technical Field

[0001] The utility model relates to the technical field of mica paper, in particular to a high-shielding mica paper. Background Art

[0002] Mica paper is a material made of high-quality muscovite mica. It is made into pulp and paper by thermochemical or hydraulic stripping, and then cut into continuous rolls or single sheets. Mica paper is mainly used as an insulator for motors and electrical appliances, especially for making insulating gaskets for large generators, insulating materials for wires and coils in motors, and processing multi-glue glass powder mica tapes. In addition, mica paper can also be used as high-temperature insulating materials for air conditioners, automobiles and armored vehicles.

[0003] For example, the authorized patent with announcement number CN 203546502 U (a composite layer mica paper): includes a coarse pulp layer and a fine pulp layer, the particle size of the mica flakes in the coarse pulp layer is -8 mesh to +40 mesh, and the particle size of the mica flakes in the fine pulp layer is -40 mesh to +150 mesh; the composite layer mica paper is in the process of manufacturing mica tape;

[0004] Although the above-mentioned prior art facilitates the bonding of the composite layer mica paper and the alkali-free glass fiber cloth and achieves the same effect of not reducing the amount of glue used, the electromagnetic shielding ability is insufficient. When mica paper is used in occasions with high requirements for electromagnetic shielding, traditional mica paper can no longer meet the needs and has poor practicality. Therefore, the market urgently needs to develop a high-shielding mica paper to help people solve the existing problems. Utility Model Content

[0005] The utility model aims to provide a high-shielding mica paper to solve the problem in the above background technology that mica paper is used in occasions with high requirements for electromagnetic shielding, and traditional mica paper can no longer meet the requirements and has poor practicality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-shielding mica paper, comprising a mica paper body, wherein the mica paper body comprises a mica paper base layer 1, a metal shielding layer, a heat-conducting layer, a reinforcing layer and a mica paper base layer 2, and the mica paper base layer 1, the metal shielding layer, the heat-conducting layer, the reinforcing layer and the mica paper base layer 2 are arranged in sequence from top to bottom,

[0007] It also includes a shielding reinforcement layer, which is arranged between the metal shielding layer and the heat conductive layer. The shielding reinforcement layer includes stainless steel transverse fiber wires, and a number of stainless steel transverse fiber wires are evenly distributed. A number of stainless steel vertical fiber wires are evenly distributed between the stainless steel transverse fiber wires. The metal shielding layer is made of aluminum foil material.

[0008] Preferably, a group of first stainless steel fiber oblique wires and second stainless steel fiber oblique wires are arranged between the stainless steel transverse fiber wires and the stainless steel vertical fiber wires, the first stainless steel fiber oblique wires and the second stainless steel fiber oblique wires are cross-connected, the first stainless steel fiber oblique wires and the second stainless steel fiber oblique wires form a triangle with the stainless steel transverse fiber wires, and the first stainless steel fiber oblique wires and the second stainless steel fiber oblique wires form a triangle with the stainless steel vertical fiber wires.

[0009] Preferably, the heat-conducting layer is configured as a graphene layer, and the reinforcing layer is configured as an alkali-free glass fiber cloth layer.

[0010] Preferably, a structural reinforcement layer is provided between the heat-conducting layer and the reinforcement layer, and the structural reinforcement layer comprises vertical carbon fiber filaments.

[0011] Preferably, a plurality of carbon fiber vertical wires are equidistantly distributed, a plurality of carbon fiber horizontal wires are equidistantly distributed between the carbon fiber vertical wires, each of the carbon fiber horizontal wires is sequentially inserted from the upper surface or the lower surface of each carbon fiber vertical wire, and two adjacent carbon fiber horizontal wires respectively pass through the upper surface and the lower surface of a carbon fiber vertical wire.

[0012] Preferably, a protective layer 1 is disposed above the mica paper base layer 1, and a protective layer 2 is disposed below the mica paper base layer 2.

[0013] Preferably, the first protective layer and the second protective layer are both made of polyimide material.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model forms a composite mica paper by arranging a multi-layer structure in mica paper, wherein a metal shielding layer made of aluminum foil is arranged, and a metal shielding layer with electromagnetic shielding is introduced to enhance the electromagnetic shielding effect of the mica paper, and a shielding reinforcement layer composed of stainless steel fibers is arranged to further enhance the electromagnetic shielding capability, effectively resist interference from external electromagnetic waves, and achieve high shielding properties of the mica paper.

[0016] 2. The utility model provides a heat-conducting layer, and the heat-conducting layer is provided as a graphene layer. The high thermal conductivity of graphene can significantly improve the thermal conductivity of mica paper, so that mica paper has a wider range of applications in situations requiring efficient heat conduction. The graphene layer can also improve the barrier properties of mica paper, especially the gas and odor barrier capabilities, so that graphene mica paper has better application effects in packaging, insulation and other fields.

[0017] 3. The utility model provides a reinforcement layer, and the reinforcement layer is provided as an alkali-free glass fiber cloth layer. The alkali-free glass fiber cloth has high tensile strength, good electrical insulation and non-flammability, so that the mica paper can maintain better integrity and stability when subjected to external forces, and improves the fire resistance and electrical insulation properties of the mica paper.

[0018] 4. The utility model generally has a structural reinforcement layer, wherein the structural reinforcement layer includes vertical carbon fiber wires and horizontal carbon fiber wires, which can improve the structural strength of the mica paper, enable the mica paper to withstand greater external forces, and increase practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a high-shielding mica paper of the utility model;

[0020] Figure 2 It is a cross-sectional view of the mica paper body of the utility model;

[0021] Figure 3 A top view of the internal structure of the shielding reinforcement layer of the utility model;

[0022] Figure 4 It is a top view of the internal structure of the structural reinforcement layer of the utility model.

[0023] In the figure: 1. Mica paper body; 2. Mica paper base layer 1; 3. Metal shielding layer; 4. Thermal conductive layer; 5. Reinforcement layer; 6. Mica paper base layer 2; 7. Protective layer 1; 8. Protective layer 2; 9. Shielding reinforcement layer; 901. Stainless steel transverse fiber filaments; 902. Stainless steel vertical fiber filaments; 903. First stainless steel fiber oblique filaments; 904. Second stainless steel fiber oblique filaments; 10. Structural reinforcement layer; 1001. Carbon fiber vertical filaments; 1002. Carbon fiber transverse filaments. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a high-shielding mica paper, comprising a mica paper body 1, the mica paper body 1 comprising a mica paper base layer 1 2, a metal shielding layer 3, a heat conducting layer 4, a reinforcing layer 5 and a mica paper base layer 2 6, and the mica paper base layer 1 2, the metal shielding layer 3, the heat conducting layer 4, the reinforcing layer 5 and the mica paper base layer 2 6 are arranged in sequence from top to bottom,

[0026] The invention also includes a shielding reinforcement layer 9, which is arranged between the metal shielding layer 3 and the heat conducting layer 4. The shielding reinforcement layer 9 includes a plurality of stainless steel transverse fiber filaments 901, and a plurality of stainless steel transverse fiber filaments 901 are arranged in an equidistant manner. A plurality of stainless steel vertical fiber filaments 902 are arranged between the stainless steel transverse fiber filaments 901. The metal shielding layer 3 is made of aluminum foil.

[0027] When in use, a composite mica paper is formed by arranging a multi-layer structure in the mica paper, wherein a metal shielding layer 3 made of aluminum foil is arranged, and the metal shielding layer 3 with electromagnetic shielding is introduced to enhance the electromagnetic shielding effect of the mica paper, and a shielding reinforcement layer 9 composed of stainless steel fibers is arranged to further enhance the electromagnetic shielding capability, effectively resist the interference of external electromagnetic waves, and achieve the high shielding property of the mica paper.

[0028] Furthermore, a group of first stainless steel fiber oblique wires 903 and second stainless steel fiber oblique wires 904 are arranged between the stainless steel transverse fiber wires 901 and the stainless steel vertical fiber wires 902. The first stainless steel fiber oblique wires 903 and the second stainless steel fiber oblique wires 904 are cross-connected, and the first stainless steel fiber oblique wires 903 and the second stainless steel fiber oblique wires 904 and the stainless steel transverse fiber wires 901 form a triangle, and the first stainless steel fiber oblique wires 903 and the second stainless steel fiber oblique wires 904 and the stainless steel vertical fiber wires 902 form a triangle, so that the internal structure of the shielding reinforcement layer 9 is stable.

[0029] Furthermore, the thermal conductive layer 4 is configured as a graphene layer. The high thermal conductivity of graphene can significantly improve the thermal conductivity of mica paper, so that mica paper has a wider application in occasions requiring efficient heat conduction, and the graphene layer can also improve the barrier properties of mica paper, especially the gas and odor barrier ability is stronger, so that the graphene mica paper has a better application effect in the fields of packaging and insulation. The reinforcing layer 5 is configured as an alkali-free glass fiber cloth layer. The alkali-free glass fiber cloth has high tensile strength, good electrical insulation and non-flammability, so that the mica paper can maintain better integrity and stability when subjected to external force, and improve the fire resistance and electrical insulation properties of the mica paper.

[0030] Furthermore, a structural reinforcement layer 10 is arranged between the thermal conductive layer 4 and the reinforcement layer 5. The structural reinforcement layer 10 includes carbon fiber vertical wires 1001. A plurality of carbon fiber vertical wires 1001 are equidistantly distributed. A plurality of carbon fiber horizontal wires 1002 are equidistantly distributed between the carbon fiber vertical wires 1001. Each carbon fiber horizontal wire 1002 is interspersed through the upper surface or lower surface of each carbon fiber vertical wire 1001 in turn, and two adjacent carbon fiber horizontal wires 1002 pass through the upper surface and lower surface of a carbon fiber vertical wire 1001 respectively, which can further improve the structural strength of the mica paper, enable the mica paper to withstand greater external forces, and increase practicality.

[0031] Furthermore, a protective layer 7 is provided above the mica paper base layer 2, and a protective layer 8 is provided below the mica paper base layer 6. Both the protective layer 7 and the protective layer 8 are made of polyimide material, which can protect the functional layers inside the mica paper, reduce erosion and mechanical damage from the external environment, and extend the service life of the mica paper.

[0032] Working principle: When in use, a composite mica paper is formed by arranging a multi-layer structure in the mica paper, wherein a metal shielding layer 3 made of aluminum foil is arranged, and the metal shielding layer 3 with electromagnetic shielding is introduced to enhance the electromagnetic shielding effect of the mica paper, and a shielding reinforcement layer 9 composed of stainless steel fibers is arranged to further enhance the electromagnetic shielding capability, effectively resist the interference of external electromagnetic waves, and achieve high shielding properties of the mica paper. A thermal conductive layer 4 made of graphene is arranged, and the high thermal conductivity of graphene can significantly improve the thermal conductivity of the mica paper, so that the mica paper has a wider range of applications in occasions requiring efficient heat conduction, and the graphene layer can also improve the barrier properties of the mica paper, especially the gas and odor barrier properties, so that the graphene mica paper has better application effects in the fields of packaging and insulation, and an alkali-free glass fiber cloth reinforcement layer 5 is arranged, and the alkali-free glass fiber cloth has high tensile strength, good electrical insulation and non-flammability, so that the mica paper can maintain better integrity and stability when subjected to external forces, and improve the fire resistance and electrical insulation properties of the mica paper.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high-shielding mica paper, comprising a mica paper body (1), wherein the mica paper body (1) comprises a first mica paper base layer (2), a metal shielding layer (3), a heat conducting layer (4), a reinforcing layer (5) and a second mica paper base layer (6), wherein the first mica paper base layer (2), the metal shielding layer (3), the heat conducting layer (4), the reinforcing layer (5) and the second mica paper base layer (6) are arranged in sequence from top to bottom, characterized in that: It also comprises a shielding reinforcement layer (9), which is arranged between the metal shielding layer (3) and the heat conducting layer (4); the shielding reinforcement layer (9) comprises stainless steel transverse fiber filaments (901), and a plurality of stainless steel transverse fiber filaments (901) are arranged at equal intervals; a plurality of stainless steel vertical fiber filaments (902) are arranged between the stainless steel transverse fiber filaments (901) and are distributed at equal intervals; and the metal shielding layer (3) is made of aluminum foil material.

2. The high-shielding mica paper according to claim 1, characterized in that: A group of first stainless steel fiber oblique wires (903) and second stainless steel fiber oblique wires (904) are arranged between the stainless steel transverse fiber wires (901) and the stainless steel vertical fiber wires (902); the first stainless steel fiber oblique wires (903) and the second stainless steel fiber oblique wires (904) are cross-connected; the first stainless steel fiber oblique wires (903) and the second stainless steel fiber oblique wires (904) form a triangle with the stainless steel transverse fiber wires (901); and the first stainless steel fiber oblique wires (903) and the second stainless steel fiber oblique wires (904) form a triangle with the stainless steel vertical fiber wires (902).

3. The high-shielding mica paper according to claim 1, characterized in that: The heat-conducting layer (4) is configured as a graphene layer, and the reinforcing layer (5) is configured as an alkali-free glass fiber cloth layer.

4. The high-shielding mica paper according to claim 3, characterized in that: A structural reinforcement layer (10) is provided between the heat-conducting layer (4) and the reinforcing layer (5), and the structural reinforcement layer (10) comprises vertical carbon fiber filaments (1001).

5. The high-shielding mica paper according to claim 4, characterized in that: A plurality of carbon fiber vertical threads (1001) are arranged at equal intervals, and a plurality of carbon fiber horizontal threads (1002) are arranged between the carbon fiber vertical threads (1001). Each of the carbon fiber horizontal threads (1002) sequentially penetrates the upper surface or the lower surface of each carbon fiber vertical thread (1001), and two adjacent carbon fiber horizontal threads (1002) respectively penetrate the upper surface and the lower surface of one carbon fiber vertical thread (1001).

6. The high-shielding mica paper according to claim 1, characterized in that: A protective layer 1 (7) is disposed above the mica paper base layer 1 (2), and a protective layer 2 (8) is disposed below the mica paper base layer 2 (6).

7. The high-shielding mica paper according to claim 6, characterized in that: The protective layer 1 (7) and the protective layer 2 (8) are both made of polyimide material.

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