Mica paper composite material with fireproof and thermal insulation structure

Abstract

The utility model discloses a mica paper composite material with fireproof and heat insulation structure belongs to fireproof and heat insulation technical field, including mica board base plate, one side of mica board base plate is provided with glass fiber cloth layer. In the utility model, the cooperation of multiple inner mica papers and two outer mica papers guarantees the high temperature resistance, insulating property, flame retardance and heat insulation of the mica paper, meanwhile, multiple long circular hole grooves are arranged on the mica board base plate formed by multiple inner mica papers, and a buffer structure is arranged in the inner cavity of the long circular hole groove, the buffer structure is used for improving the impact resistance and buffering performance of the mica paper, in addition, the polyimide plastic outer layer is used for guaranteeing the high temperature resistance and high insulation performance of the mica paper, the composite silicone rubber flexible inner layer is used for guaranteeing the chemical corrosion resistance and high temperature resistance of the mica paper, the mica paper can resist the erosion of various acids, alkalis, salts and other chemical substances, and the elasticity of the composite silicone rubber flexible inner layer guarantees the buffering performance of the mica paper, and the utility model has good practicality.

Description

Technical Field

[0001] This utility model relates to the field of fireproof and heat-insulating materials technology, and more specifically, to a mica paper composite material with a fireproof and heat-insulating structure. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the safety performance of power batteries has become one of the core bottlenecks restricting the industry's development. Fire-resistant and heat-insulating materials, as key components ensuring battery system safety, face increasingly stringent performance requirements. Mica paperboard, with its excellent high-temperature resistance, insulation, and flame retardancy, is widely used in fire-resistant and heat-insulating applications for core components such as power battery packs and electronic control systems in new energy vehicles. However, when protecting power battery packs, fire resistance, insulation, and impact resistance must be considered simultaneously. Mica paperboard alone is insufficient, and its strength and corrosion resistance are also inadequate. Therefore, we propose a mica paper composite material with a fire-resistant and heat-insulating structure. Utility Model Content

[0003] In view of the problems mentioned in the background art above, the purpose of this utility model is to provide a mica paper composite material with a fireproof and heat-insulating structure.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A mica paper composite material with a fireproof and heat-insulating structure includes a mica board substrate. A fiberglass cloth layer is disposed on one side of the mica board substrate, and a nylon fabric mesh layer is disposed on the other side of the mica board substrate. An outer mica paper is disposed on the outer side of both the fiberglass cloth layer and the nylon fabric mesh layer. A polyimide plastic outer layer is disposed on the outer side of one of the outer mica papers, and a composite silicone rubber flexible inner layer is disposed on the outer side of the other outer mica paper. A plurality of elongated slots are disposed on the mica board substrate, and a buffer structure is disposed inside each of the plurality of elongated slots. The mica board substrate includes a plurality of stacked inner mica papers, and a fiber mesh is disposed on the inner side of both the plurality of inner and outer mica papers.

[0006] As a preferred embodiment of this utility model, the fiberglass cloth layer is formed by a mixture of multiple fiberglass weft threads, multiple para-aramid weft threads, multiple fiberglass warp threads, and multiple para-aramid warp threads.

[0007] As a preferred embodiment of this utility model, the nylon fabric mesh is formed by a mixture of multiple nylon weft yarns, multiple meta-aramid weft yarns, multiple nylon warp yarns, and multiple meta-aramid warp yarns.

[0008] As a preferred embodiment of this utility model, a first adhesive is provided between the plurality of inner mica papers.

[0009] As a preferred embodiment of this utility model, a second adhesive is provided between the mica substrate and the fiberglass cloth layer, the mica substrate and the nylon fabric mesh layer, the fiberglass cloth layer and the outer mica paper, and the nylon fabric mesh layer and the outer mica paper.

[0010] As a preferred embodiment of the present invention, a fourth adhesive is provided between one of the outer mica paper and the polyimide plastic outer layer, and a third adhesive is provided between the other outer mica paper and the composite silicone rubber flexible inner layer.

[0011] The advantages of this utility model are:

[0012] (1) In this utility model, the combination of multiple inner mica papers and two outer mica papers ensures the high temperature resistance, insulation, flame retardancy and heat insulation of the mica paper. At the same time, multiple elongated holes and grooves are provided on the mica board substrate composed of multiple inner mica papers, and a buffer structure is provided in the inner cavity of the elongated holes and grooves. The buffer structure is used to improve the impact resistance and buffer performance of the mica paper. In addition, the polyimide plastic outer layer is used to ensure the high temperature resistance and high insulation performance of the mica paper, and the composite silicone rubber flexible inner layer is used to ensure the chemical corrosion resistance and high temperature resistance of the mica paper. It can resist the erosion of various chemicals such as acids, alkalis and salts. At the same time, the elasticity of the composite silicone rubber flexible inner layer ensures the buffer performance of the mica paper. It has good practicality.

[0013] (2) In this utility model, the fiberglass weft and fiberglass warp yarns that make up the fiberglass cloth layer ensure the strength and corrosion resistance of the mica paper, the para-aramid weft and para-aramid warp yarns that make up the fiberglass cloth layer ensure the strength of the mica paper, the nylon weft and nylon warp yarns that make up the nylon fabric web layer ensure the strength of the mica paper, and the meta-aramid weft and meta-aramid warp yarns that make up the nylon fabric web layer ensure the high temperature resistance, flame retardancy and insulation performance of the mica paper, and it has good practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram showing the disassembled components of the mica substrate, fiberglass cloth layer, nylon fabric mesh layer, and outer mica paper of this utility model.

[0017] Figure 4 This is an exploded view of the mica substrate of this utility model.

[0018] Figure 5 This is a schematic diagram of the fiberglass cloth layer of this utility model;

[0019] Figure 6This is a schematic diagram of the structure of the nylon fabric mesh layer of this utility model;

[0020] Figure 7 This utility model Figure 4 Enlarged diagram of point A in the diagram.

[0021] Explanation of the labels in the diagram:

[0022] 1. Mica substrate; 2. Fiberglass cloth layer; 3. Nylon fabric mesh layer; 4. Outer mica paper; 5. Polyimide plastic outer layer; 6. Composite silicone rubber flexible inner layer; 7. Second adhesive; 8. Inner mica paper; 9. First adhesive; 10. Elongated groove; 11. Buffer structure; 12. Fiber mesh; 13. Third adhesive; 14. Fourth adhesive; 15. Fiberglass weft; 16. Para-aramid weft; 17. Fiberglass warp; 18. Para-aramid warp; 19. Nylon weft; 20. Meta-aramid weft; 21. Nylon warp; 22. Meta-aramid warp. Detailed Implementation

[0023] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0024] Example 1:

[0025] like Figures 1 to 7 As shown, a mica paper composite material with a fireproof and heat-insulating structure includes a mica substrate 1, a fiberglass cloth layer 2 on one side of the mica substrate 1, a nylon fabric mesh layer 3 on the other side of the mica substrate 1, and outer mica paper 4 on the outer sides of both the fiberglass cloth layer 2 and the nylon fabric mesh layer 3. One outer mica paper 4 has a polyimide plastic outer layer 5 on its outer side, and the other outer mica paper 4 has a composite silicone rubber flexible inner layer 6 on its outer side. The mica substrate 1 has multiple elongated slots 10, and each elongated slot 10 has a buffer structure 11 inside. The buffer structure 11 is filled with an inert insulating medium, such as a hexagonal... Sulfur fluoride and synthetic ester insulating oil are used. The elongated grooves 10 are arranged along the shear resistance direction to improve the impact resistance and cushioning performance of the mica paper. The mica board substrate 1 includes multiple stacked inner mica papers 8. Fiber mesh 12 is provided on the inner side of the multiple inner mica papers 8 and the outer mica papers 4. The fiber mesh 12 is used to ensure the adhesion of the inner mica papers 8 and the outer mica papers 4 in the subsequent impregnation process. The inner mica papers 8 and the outer mica papers 4 are prepared by wet papermaking process. Mica flakes are mixed with water and dispersant to make pulp. The pulp is dewatered and formed by the wire section of the papermaking machine to form continuous wet mica paper. The formed wet paper is dried to obtain the inner mica papers 8 and the outer mica papers 4.

[0026] Example 2:

[0027] Based on Example 1, such as Figure 3 , Figure 5 and Figure 6 As shown, the fiberglass cloth layer 2 is made of multiple fiberglass weft yarns 15, multiple para-aramid weft yarns 16, multiple fiberglass warp yarns 17, and multiple para-aramid warp yarns 18 in a warp and weft blend. The fiberglass weft yarns 15 and fiberglass warp yarns 17 ensure the strength and corrosion resistance of the mica paper, while the para-aramid weft yarns 16 and para-aramid warp yarns 18 ensure the strength of the mica paper. The nylon fabric mesh layer 3 is made of multiple nylon weft yarns 19, multiple meta-aramid weft yarns 20, multiple nylon warp yarns 21, and multiple meta-aramid warp yarns 22 in a warp and weft blend. The nylon weft yarns 19 and nylon warp yarns 21 ensure the strength of the mica paper, while the meta-aramid weft yarns 20 and meta-aramid warp yarns 22 ensure the high temperature resistance, flame retardancy, and insulation properties of the mica paper.

[0028] Example 3:

[0029] Based on Embodiment 1 and Embodiment 2, such as Figures 1 to 4 As shown, a first adhesive 9 is provided between multiple inner mica papers 8. A second adhesive 7 is provided between the mica substrate 1 and the fiberglass cloth layer 2, the mica substrate 1 and the nylon fabric mesh layer 3, the fiberglass cloth layer 2 and the outer mica paper 4, and the nylon fabric mesh layer 3 and the outer mica paper 4. A fourth adhesive 14 is provided between one outer mica paper 4 and the polyimide plastic outer layer 5. A third adhesive 13 is provided between another outer mica paper 4 and the composite silicone rubber flexible inner layer 6. The second adhesive 7, the first adhesive 9, the fourth adhesive 14 and the third adhesive 13 need to be modified in advance. 1-3‰ of butylated hydroxyanisole and dibutylated hydroxytoluene compound anti-aging agent and 5-15‰ of benzotriazole and ascorbic acid compound antioxidant are added to the epoxy resin to enhance the aging resistance of the finished product.

[0030] It should be noted that this utility model is a mica paper composite material with a fireproof and heat-insulating structure. First, the raw mica ore is crushed and ground to produce mica flakes with uniform particle size. Impurities are removed by flotation to improve the purity of the mica. The mica flakes are mixed with water and a dispersant to make pulp. The pulp is then dewatered and formed by the wire section of a paper machine to form continuous wet mica paper. The wet mica paper is then dried to form multiple inner mica papers 8 and multiple outer mica papers 4. A fiber web 12 is set in the multiple outer mica papers 4 and multiple inner mica papers 8. At the same time, a fiberglass cloth layer 2 is woven by the cooperation of glass fiber weft yarn 15, para-aramid weft yarn 16, glass fiber warp yarn 17 and para-aramid warp yarn 18. A nylon fabric is woven by the cooperation of nylon weft yarn 19, meta-aramid weft yarn 20, nylon warp yarn 21 and meta-aramid warp yarn 22. The process involves first layer 3, then immersing the dried mica paper in a modified adhesive to ensure uniform penetration of the adhesive into the gaps between the mica flakes. Simultaneously, the first adhesive 9 is used to connect multiple inner mica papers 8 to form a mica substrate 1. Multiple elongated slots 10 are provided on the mica substrate 1, and buffer structures 11 are provided in the elongated slots 10. Then, the fiberglass cloth layer 2 and the nylon fabric mesh layer 3 are bonded to both sides of the mica substrate 1 using the second adhesive 7. The outer mica paper 4 is also bonded to the outer sides of both the fiberglass cloth layer 2 and the nylon fabric mesh layer 3 using the second adhesive 7. Finally, the polyimide plastic outer layer 5 is bonded to the outer side of one outer mica paper 4 using the fourth adhesive 14, and the composite silicone rubber flexible inner layer 6 is bonded to the outer side of another outer mica paper 4 using the third adhesive 13, thus forming the mica paper.

[0031] The high-temperature resistance, insulation, flame retardancy, and heat insulation properties of the inner mica paper 8 and outer mica paper 4 ensure the high-temperature resistance, insulation, flame retardancy, and heat insulation properties of the mica paper. The buffer structure 11 inside the elongated groove 10 enhances the impact resistance and cushioning performance of the mica paper. The polyimide plastic outer layer 5 ensures the high-temperature resistance and high insulation performance of the mica paper. The composite silicone rubber flexible inner layer 6 ensures the chemical corrosion resistance and high-temperature resistance of the mica paper, enabling it to resist the erosion of various chemicals such as acids, alkalis, and salts. At the same time, the composite silicone... The elasticity of the flexible rubber inner layer 6 ensures the cushioning performance of the mica paper. In addition, the fiberglass weft yarn 15 and fiberglass warp yarn 17 that make up the fiberglass cloth layer 2 ensure the strength and corrosion resistance of the mica paper. The para-aramid weft yarn 16 and para-aramid warp yarn 18 that make up the fiberglass cloth layer 2 ensure the strength of the mica paper. The nylon weft yarn 19 and nylon warp yarn 21 that make up the nylon fabric web layer 3 ensure the strength of the mica paper. The meta-aramid weft yarn 20 and meta-aramid warp yarn 22 that make up the nylon fabric web layer 3 ensure the high temperature resistance, flame retardancy and insulation performance of the mica paper.

[0032] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A mica paper composite material with a fireproof and heat-insulating structure, characterized in that: The system includes a mica substrate (1), on one side of which a fiberglass cloth layer (2) is provided, and on the other side of which a nylon fabric mesh layer (3) is provided. Both the fiberglass cloth layer (2) and the nylon fabric mesh layer (3) are provided with outer mica paper (4). One of the outer mica papers (4) is provided with a polyimide plastic outer layer (5), and the other outer mica paper (4) is provided with a composite silicone rubber flexible inner layer (6). The mica substrate (1) is provided with a plurality of elongated slots (10), and each of the plurality of elongated slots (10) is provided with a buffer structure (11). The mica substrate (1) includes a plurality of stacked inner mica papers (8), and both the inner and outer mica papers (8) are provided with fiber mesh (12).

2. The mica paper composite material with a fireproof and heat-insulating structure according to claim 1, characterized in that: The fiberglass cloth layer (2) is made of multiple fiberglass weft yarns (15), multiple para-aramid weft yarns (16), multiple fiberglass warp yarns (17) and multiple para-aramid warp yarns (18) in a mixed weft and warp pattern.

3. The mica paper composite material with a fireproof and heat-insulating structure according to claim 2, characterized in that: The nylon fabric mesh (3) is made of multiple nylon weft yarns (19), multiple meta-aramid weft yarns (20), multiple nylon warp yarns (21) and multiple meta-aramid warp yarns (22) in a mixed warp and weft pattern.

4. The mica paper composite material with a fireproof and heat-insulating structure according to claim 1, characterized in that: A first adhesive (9) is disposed between the plurality of said inner mica papers (8).

5. The mica paper composite material with a fireproof and heat-insulating structure according to claim 1, characterized in that: A second adhesive (7) is provided between the mica substrate (1) and the fiberglass cloth layer (2), the mica substrate (1) and the nylon fabric mesh layer (3), the fiberglass cloth layer (2) and the outer mica paper (4), and the nylon fabric mesh layer (3) and the outer mica paper (4).

6. The mica paper composite material with a fireproof and heat-insulating structure according to claim 1, characterized in that: A fourth adhesive (14) is provided between one of the outer mica paper (4) and the polyimide plastic outer layer (5), and a third adhesive (13) is provided between the other outer mica paper (4) and the composite silicone rubber flexible inner layer (6).

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