Bending-resistant composite mica paper

Abstract

The utility model discloses bending-resistant composite mica paper, which relates to the field of mica paper and comprises a mica base layer, a plurality of groups of first elastic rods and a plurality of groups of second elastic rods, a first glass fiber layer is arranged on the upper side of each first elastic rod, a first protective layer is arranged on the upper side of each first glass fiber layer, and a second protective layer is arranged on the upper side of each second elastic rod. A second glass fiber layer is arranged on the lower side of the second elastic rod, a second protective layer is arranged on the lower side of the second glass fiber layer, two sets of first elastic strips are symmetrically connected to the first elastic rod, a first elastic pipe is arranged between the two sets of first elastic rods, and a first metal wire strip is fixedly connected to the inner side of the first elastic pipe. The composite mica paper has the advantages that the situation that the composite mica paper is broken in the transverse and longitudinal bending process can be avoided, the composite mica paper has good bending resistance, the glue consumption in the composite mica paper can be reduced as much as possible, the production cost is reduced, and the insulation performance of the composite mica paper can be improved.

Description

Technical Field

[0001] The utility model relates to the field of mica paper, in particular to a bend-resistant composite mica paper. Background Technique

[0002] With the continuous development of power equipment, especially in equipment operating in high-voltage and high-temperature environments, higher requirements are put forward for insulating materials. Traditional insulating materials such as paper, fiber, and plastic are difficult to meet the needs of long-term stable operation under some extreme conditions. Mica, as a natural mineral, has been widely used in the electrical industry due to its excellent electrical insulation performance, high-temperature resistance performance, and chemical stability. However, natural mica has problems such as uneven physical form and difficult processing. To overcome these deficiencies, mica flakes are compounded with other materials to make composite mica paper with uniform thickness and stable performance.

[0003] The patent with the publication number CN206451552U discloses a multi-layer composite mica paper, which can effectively improve the surface tension of the mica paper, so that its finished product not only retains the advantages of natural mica such as anti-breakdown, high insulation, and heat insulation, but also has better electrical strength and stability. However, when this composite mica paper is used, it is prone to break due to external force bending, and its bend resistance ability is poor. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a bend-resistant composite mica paper. When the existing composite mica paper is used, it is prone to break due to external force bending, and its bend resistance ability is poor.

[0005] To solve the above technical problem, the technical solution of the utility model is a bend-resistant composite mica paper, which includes a mica base layer, and also includes several groups of first elastic rods and several groups of second elastic rods. A first glass fiber layer is arranged on the upper side of the first elastic rod, and a first protective layer is arranged on the upper side of the first glass fiber layer. A second glass fiber layer is arranged on the lower side of the second elastic rod, and a second protective layer is arranged on the lower side of the second glass fiber layer.

[0006] As a further scheme of the utility model: Two groups of first elastic strips are symmetrically connected to the first elastic rod, a first elastic tube is arranged between the two groups of first elastic rods, and a first metal wire strip is fixedly connected to the inner side of the first elastic tube.

[0007] As a further scheme of the utility model: Several groups of the first elastic rods are evenly distributed between the mica base layer and the first glass fiber layer, and the cross-sectional shapes of several groups of the first elastic rods are all arranged in an X shape.

[0008] As a further solution of the utility model: Two groups of second elastic strips are symmetrically connected to the second elastic rod, a second elastic tube is arranged between the two groups of second elastic rods, and a second metal wire strip is fixedly connected to the inner side of the second elastic tube.

[0009] As a further solution of the utility model: Several groups of the second elastic rods are evenly distributed between the mica base layer and the second glass fiber layer, and the cross-sectional shapes of several groups of the second elastic rods are all arranged in an X shape.

[0010] As a further solution of the utility model: A first adhesive strip and a second adhesive strip are respectively fixedly connected to the upper and lower sides of the first elastic rod, a first adhesive tape is fixedly connected to the upper surface of the first glass fiber layer, a third adhesive strip and a fourth adhesive strip are respectively fixedly connected to the upper and lower sides of the second elastic rod, and a second adhesive tape is fixedly connected to the lower surface of the second glass fiber layer.

[0011] As a further solution of the utility model: Several groups of second adhesive grooves are formed on the upper surface of the mica base layer, several groups of first adhesive grooves are formed on the lower surface of the first glass fiber layer, and the first adhesive strip and the second adhesive strip respectively fit with the first adhesive groove and the second adhesive groove.

[0012] As a further solution of the utility model: Several groups of third adhesive grooves are formed on the lower surface of the mica base layer, several groups of fourth adhesive grooves are formed on the upper surface of the second glass fiber layer, and the third adhesive strip and the fourth adhesive strip respectively fit with the third adhesive groove and the fourth adhesive groove.

[0013] As a further solution of the utility model: The shapes of the first adhesive tape and the second adhesive tape are both grid-shaped, first tape grooves and second tape grooves are respectively formed on the inner sides of the first protective layer and the second protective layer, and the first adhesive tape and the second adhesive tape respectively fit with the first tape groove and the second tape groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: Through the cooperation of several groups of first elastic rods, several groups of first elastic tubes, first elastic strips and first metal wire strips, the composite mica paper will not be longitudinally broken when bent. At the same time, through the cooperation of several groups of second elastic rods, several groups of second elastic tubes, second elastic strips and second metal wire strips, the composite mica paper will not be transversely broken when bent. And through the cooperation of the first glass fiber layer and the second glass fiber layer, it can avoid the composite mica paper from being broken during the transverse and longitudinal bending processes, and has good bending resistance.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the cooperation of the first adhesive strip and the first adhesive groove with the second adhesive strip and the second adhesive groove, a number of groups of first elastic rods are closely bonded between the mica base layer and the first fiberglass layer. Then, through the cooperation of the third adhesive strip and the third adhesive groove with the fourth adhesive strip and the fourth adhesive groove, a number of groups of second elastic rods are closely bonded between the mica base layer and the second fiberglass layer. Subsequently, through the first adhesive tape and the first tape groove, the first fiberglass layer is closely bonded to the first protective layer. Then, through the second adhesive tape and the second tape groove, the second fiberglass layer is closely connected to the second protective layer. Moreover, the shapes of the first adhesive tape and the second adhesive tape are both grid-shaped, which can minimize the amount of glue used in the composite mica paper, reduce the production cost, and contribute to improving the insulation performance of the composite mica paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a bend-resistant composite mica paper in an embodiment of the present utility model;

[0017] Figure 2 is a cross-sectional view of a bend-resistant composite mica paper in an embodiment of the present utility model;

[0018] Figure 3 is a schematic connection structure diagram of the first elastic rod in an embodiment of the present utility model;

[0019] Figure 4 is a schematic connection structure diagram of the second elastic rod in an embodiment of the present utility model.

[0020] In the figure: 1, mica base layer; 2, first elastic rod; 3, first fiberglass layer; 4, first protective layer; 5, second elastic rod; 6, second fiberglass layer; 7, second protective layer; 8, first elastic strip; 9, first elastic tube; 10, first metal wire strip; 11, second elastic strip; 12, second elastic tube; 13, second metal wire strip; 14, first adhesive strip; 15, second adhesive strip; 16, first adhesive groove; 17, second adhesive groove; 18, first adhesive tape; 19, first tape groove; 20, third adhesive strip; 21, fourth adhesive strip; 22, first adhesive groove; 23, second adhesive groove; 24, second adhesive tape; 25, second tape groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further describes the specific embodiments of the present utility model with reference to the drawings. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1, please refer to Figures 1-4, A bend-resistant composite mica paper, including a mica base layer 1, and also including several groups of first elastic rods 2 and several groups of second elastic rods 5. A first fiberglass layer 3 is provided on the upper side of the first elastic rod 2, and a first protective layer 4 is provided on the upper side of the first fiberglass layer 3. A second fiberglass layer 6 is provided on the lower side of the second elastic rod 5, and a second protective layer 7 is provided on the lower side of the second fiberglass layer 6.

[0023] Two groups of first elastic strips 8 are symmetrically connected to the first elastic rod 2. A first elastic tube 9 is provided between the two groups of first elastic rods 2. A first metal wire strip 10 is fixedly connected to the inner side of the first elastic tube 9. Several groups of first elastic rods 2 are equally spaced between the mica base layer 1 and the first fiberglass layer 3, and the cross-sectional shapes of several groups of first elastic rods 2 are all set in an X shape.

[0024] In this embodiment, the first elastic rod 2 cooperates with the first elastic strip 8 and the first elastic tube 9 to make the composite mica paper resistant to longitudinal bending.

[0025] Two groups of second elastic strips 11 are symmetrically connected to the second elastic rod 5. A second elastic tube 12 is provided between the two groups of second elastic rods 5. A second metal wire strip 13 is fixedly connected to the inner side of the second elastic tube 12. Several groups of second elastic rods 5 are equally spaced between the mica base layer 1 and the second fiberglass layer 6, and the cross-sectional shapes of several groups of second elastic rods 5 are all set in an X shape.

[0026] In this embodiment, the second elastic rod 5 cooperates with the second elastic strip 11 and the second elastic tube 12 to make the composite mica paper resistant to transverse bending.

[0027] Specifically, through the cooperation of several groups of first elastic rods 2 and several groups of first elastic tubes 9 with the first elastic strip 8 and the first metal wire strip 10, the composite mica paper will not break longitudinally when bent. At the same time, through the cooperation of several groups of second elastic rods 5 and several groups of second elastic tubes 12 with the second elastic strip 11 and the second metal wire strip 13, the composite mica paper will not break transversely when bent. And through the cooperation of the first fiberglass layer 3 and the second fiberglass layer 6, it can avoid the composite mica paper from breaking during transverse and longitudinal bending, and has good bend resistance.

[0028] Example 2, please refer to Figures 1-4 , A bend-resistant composite mica paper, the upper and lower sides of the first elastic rod 2 are respectively fixedly connected with a first adhesive strip 14 and a second adhesive strip 15, the upper surface of the first fiberglass layer 3 is fixedly connected with a first adhesive tape 18, the upper and lower sides of the second elastic rod 5 are respectively fixedly connected with a third adhesive strip 20 and a fourth adhesive strip 21, and the lower surface of the second fiberglass layer 6 is fixedly connected with a second adhesive tape 24.

[0029] The upper surface of the mica base layer 1 is provided with several groups of second adhesive grooves 17, the lower surface of the first fiberglass layer 3 is provided with several groups of first adhesive grooves 16, and the first adhesive strip 14 and the second adhesive strip 15 respectively fit with the first adhesive grooves 16 and the second adhesive grooves 17.

[0030] In this embodiment, the first elastic rods 2 are tightly connected between the mica base layer 1 and the first fiberglass layer 3 by means of the cooperation of the first adhesive strip 14 and the second adhesive strip 15 with the first adhesive grooves 16 and the second adhesive grooves 17.

[0031] The lower surface of the mica base layer 1 is provided with several groups of third adhesive grooves 22, the upper surface of the second fiberglass layer 6 is provided with several groups of fourth adhesive grooves 23, and the third adhesive strip 20 and the fourth adhesive strip 21 respectively fit with the third adhesive grooves 22 and the fourth adhesive grooves 23.

[0032] In this embodiment, the second elastic rods 5 are tightly connected between the mica base layer 1 and the second fiberglass layer 6 by means of the cooperation of the third adhesive strip 20 and the fourth adhesive strip 21 with the third adhesive grooves 22 and the fourth adhesive grooves 23.

[0033] The shapes of the first adhesive tape 18 and the second adhesive tape 24 are both grid-shaped. The inner sides of the first protective layer 4 and the second protective layer 7 are respectively provided with a first tape groove 19 and a second tape groove 25, and the first adhesive tape 18 and the second adhesive tape 24 respectively fit with the first tape groove 19 and the second tape groove 25.

[0034] In this embodiment, the first fiberglass layer 3 and the second fiberglass layer 6 are respectively tightly connected to the first protective layer 4 and the second protective layer 7 by means of the cooperation of the first adhesive tape 18 and the second adhesive tape 24 with the first tape groove 19 and the second tape groove 25.

[0035] Specifically, several groups of first elastic rods 2 are tightly bonded between the mica base layer 1 and the first fiberglass layer 3 through the cooperation of the first adhesive strip 14 and the first adhesive groove 16 with the second adhesive strip 15 and the second adhesive groove 17. Then, several groups of second elastic rods 5 are tightly bonded between the mica base layer 1 and the second fiberglass layer 6 through the cooperation of the third adhesive strip 20 and the third adhesive groove 22 with the fourth adhesive strip 21 and the fourth adhesive groove 23. Next, the first fiberglass layer 3 is tightly bonded to the first protective layer 4 through the first adhesive tape 18 and the first tape groove 19, and the second fiberglass layer 6 is tightly connected to the second protective layer 7 through the second adhesive tape 24 and the second tape groove 25. Moreover, the shapes of the first adhesive tape 18 and the second adhesive tape 24 are both grid-shaped, which can minimize the amount of glue used in the composite mica paper, reduce the production cost, and contribute to improving the insulation performance of the composite mica paper.

[0036] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A bend-resistant composite mica paper, comprising a mica base layer (1), characterized in that: It also includes several groups of first elastic rods (2) and several groups of second elastic rods (5). A first fiberglass layer (3) is provided on the upper side of the first elastic rod (2), and a first protective layer (4) is provided on the upper side of the first fiberglass layer (3). A second fiberglass layer (6) is provided on the lower side of the second elastic rod (5), and a second protective layer (7) is provided on the lower side of the second fiberglass layer (6).

2. The bend-resistant composite mica paper according to claim 1, characterized in that: Two groups of first elastic strips (8) are symmetrically connected to the first elastic rod (2). A first elastic tube (9) is provided between the two groups of first elastic rods (2), and a first metal wire strip (10) is fixedly connected to the inner side of the first elastic tube (9).

3. The flexible composite mica paper according to claim 2, characterized in that: Several groups of the first elastic rods (2) are equally spaced between the mica base layer (1) and the first fiberglass layer (3), and the cross-sectional shapes of several groups of first elastic rods (2) are all set in an X shape.

4. A bend-resistant composite mica paper according to claim 1, characterized in that: Two groups of second elastic strips (11) are symmetrically connected to the second elastic rod (5). A second elastic tube (12) is provided between the two groups of second elastic rods (5), and a second metal wire strip (13) is fixedly connected to the inner side of the second elastic tube (12).

5. A bend-resistant composite mica paper according to claim 4, characterized in that: Several groups of the second elastic rods (5) are equally spaced between the mica base layer (1) and the second fiberglass layer (6), and the cross-sectional shapes of several groups of second elastic rods (5) are all set in an X shape.

6. The flexible composite mica paper according to claim 1, wherein: A first adhesive strip (14) and a second adhesive strip (15) are respectively fixedly connected to the upper and lower sides of the first elastic rod (2). A first adhesive tape (18) is fixedly connected to the upper surface of the first fiberglass layer (3). A third adhesive strip (20) and a fourth adhesive strip (21) are respectively fixedly connected to the upper and lower sides of the second elastic rod (5). A second adhesive tape (24) is fixedly connected to the lower surface of the second fiberglass layer (6).

7. The bend-resistant composite mica paper according to claim 6, wherein: Several groups of second adhesive grooves (17) are formed on the upper surface of the mica base layer (1), and several groups of first adhesive grooves (16) are formed on the lower surface of the first fiberglass layer (3), and the first adhesive strip (14) and the second adhesive strip (15) respectively fit with the first adhesive groove (16) and the second adhesive groove (17).

8. The bend-resistant composite mica paper according to claim 6, characterized in that: Several groups of third adhesive grooves (22) are formed on the lower surface of the mica base layer (1), and several groups of fourth adhesive grooves (23) are formed on the upper surface of the second fiberglass layer (6), and the third adhesive strip (20) and the fourth adhesive strip (21) respectively fit with the third adhesive groove (22) and the fourth adhesive groove (23).

9. A bend-resistant composite mica paper according to claim 6, characterized in that: The shapes of the first adhesive tape (18) and the second adhesive tape (24) are both grid-shaped. A first tape groove (19) and a second tape groove (25) are respectively formed on the inner sides of the first protective layer (4) and the second protective layer (7), and the first adhesive tape (18) and the second adhesive tape (24) respectively fit with the first tape groove (19) and the second tape groove (25).

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