Thermal insulation and noise reduction electromagnetic shielding integrated honeycomb composite board

Abstract

The application provides a heat-insulating noise-reducing electromagnetic shielding integrated honeycomb composite board, which comprises, from top to bottom, a micro-glass fiber grid reinforced phenolic resin perforated plate, an embedded film honeycomb core and a damping plate. The micro-glass fiber grid reinforced phenolic resin perforated plate is a composite structure with a reinforcing phase of a micro-glass fiber grid cloth and a matrix phase of a phenolic resin, and a plurality of groups of perforations are formed in the composite structure. The embedded film honeycomb core is provided with a plurality of groups of honeycomb cells and embedded films, the center of each group of honeycomb cells is aligned with the center of the perforation, and the embedded film is arranged on the center line of the thickness of the honeycomb cell, 2 mm above and below. The damping plate is a composite structure formed by stacking a vacuum heat-insulating plate and a damping layer. The structure design can effectively improve the heat-insulating noise-reducing function and electromagnetic shielding capacity of the material, so that the material can be used as a heat-insulating noise-reducing electromagnetic shielding material in the fields of building and transportation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat preservation and noise reduction electromagnetic shielding materials, and particularly relates to a heat preservation and noise reduction electromagnetic shielding integrated honeycomb composite board. BACKGROUND

[0002] Noise pollution, energy dissipation and electromagnetic wave interference in road traffic, construction sites and social life are the most common byproducts in the process of industrialization and urbanization, and have a serious negative impact on human physical and mental health and quality of life. The honeycomb sandwich structure is a composite material composed of a honeycomb core material and a panel, and has the advantages of light weight, high specific strength, impact resistance, energy absorption, vibration reduction and energy storage, and is widely used in important fields such as construction, transportation, aerospace, etc. At present, most of the noise reduction measures taken by people can block part of the medium and high frequency sound, while the low frequency noise has a long wavelength, a long propagation distance and strong penetration ability. The sandwich structure prepared by the micro-perforated panel and the honeycomb core can provide a wideband absorption under low frequency conditions through the regularly distributed holes on the panel, thereby playing a noise reduction role. On the other hand, as the world's second largest energy consumer, China gradually realizes the importance of sustainable development. The extreme change of climate also makes it difficult to control the temperature in the indoor and cabin areas where human activities take place. Selecting excellent heat preservation materials can greatly reduce the cost of heat preservation and alleviate the energy crisis. Secondly, with the progress of science and technology and the improvement of people's living standards, mobile phones, televisions, computers, microwave ovens and other electronic products are becoming increasingly popular, making electromagnetic radiation ubiquitous in our lives. Electromagnetic radiation has become the "fourth pollution source" after air, water and noise. Therefore, selecting appropriate materials to achieve electromagnetic shielding is a major means to improve people's living environment.

[0003] The invention patent "A honeycomb sandwich board with embedded multi-level structure" (ZL 201811398118.9) proposes a sandwich structure composed of upper and lower panels and a middle honeycomb core. This structure can absorb noise and vibration in the cabin of an airplane while achieving lightweight and high strength. The invention patent "Preparation method of sound-absorbing honeycomb with embedded micro-perforated soundproofing partition" (ZL 201610404165.4) designs a honeycomb structure with an embedded partition using the internal cavity structure of the honeycomb core material, fully utilizing the synergistic sound-absorbing effect of the micro-perforated plate and the honeycomb cavity. The invention patent "Double-layer composite soundproofing and heat-insulating paper honeycomb board" (ZL 201911177634.3) proposes a double-layer composite soundproofing and heat-insulating paper honeycomb board, which utilizes the double-layer honeycomb core structure to provide better heat insulation and sound insulation performance. The invention patent "Thermal insulation type aramid honeycomb sandwich board" (ZL 201620622276.8) proposes a thermal insulation type aramid honeycomb sandwich board, which includes an upper skin, an aramid honeycomb core, a thermal insulation layer, and a lower skin. This composite board has the advantages of simple structure, low thermal conductivity, and good thermal insulation. The invention patent "Electromagnetic shielding composite material based on graphene honeycomb structure and its preparation method and application" (ZL 201910136245X) utilizes graphene to form a uniform arrangement through the honeycomb wall, forming a complete conductive path and improving the electrical conductivity and electromagnetic shielding performance of the composite material. It can be found that general structural design and material integration can effectively improve or optimize the performance of composite materials. However, current honeycomb composite materials mainly optimize individual performance, which cannot meet the needs of multi-functional fields, limiting their use range. SUMMARY

[0004] Technical solution: To solve the above technical problems, the present invention provides a thermal insulation and noise reduction electromagnetic shielding integrated honeycomb composite board, which is composed of a glass fiber grid reinforced phenolic resin perforated plate, an embedded film honeycomb core, and a damping plate. Through structural design, the composite structure's sound absorption, thermal insulation, and electromagnetic shielding effects are further improved while maintaining lightweight. This structure can be used not only in construction, consumer goods, and other fields but also as a thermal insulation and noise reduction electromagnetic shielding material for high-end industries such as aerospace vehicles, automobiles, ships, and high-speed trains. At the same time, it has low cost, abundant raw material sources, simple processing technology, high yield, good economic and social benefits. Specifically, a thermal insulation and noise reduction electromagnetic shielding integrated honeycomb composite board is provided, which includes:

[0005] From top to bottom, it comprises a micro-glass fiber grid reinforced phenolic resin perforated plate, an embedded film honeycomb core, and a damping plate; wherein the micro-glass fiber grid reinforced phenolic resin perforated plate is a composite structure with a reinforcing phase of a micro-glass fiber grid cloth and a matrix phase of a phenolic resin, and then a plurality of groups of perforations are formed in the composite structure from top to bottom; the embedded film honeycomb core is provided with a plurality of groups of honeycomb cells and an embedded film, the center of each group of honeycomb cells is aligned with the center of the perforation, and the embedded film is arranged on the center line of the thickness of the honeycomb cell at a position 2 mm above and below; the damping plate is a composite structure formed by stacking a vacuum insulation board and a damping layer.

[0006] As an improvement, the micro-glass fiber grid cloth is a structure formed by stacking grids with side lengths of 1-3 mm, 4-7 mm, and 8-11 mm from top to bottom in an increasing manner according to the side length; wherein the grids with the same size are arranged in 4-6 layers, and the grids are filled with pearl sand with a particle size of 0.2-0.6 mm.

[0007] As an improvement, the micro-glass fiber grid cloth is a multi-layer structure formed by stacking grids with side lengths of 2 mm, 6 mm, and 10 mm in an increasing manner from top to bottom.

[0008] As an improvement, the perforations fall in the grids of each layer of micro-glass fiber grid cloth, the diameter gradually increases from top to bottom, and is less than the side length of the grid of each layer of micro-glass fiber grid cloth; the maximum distance between the center lines of adjacent perforations is the side length of the grid of the bottom layer of micro-glass fiber grid cloth.

[0009] As an improvement, the perforation is a three-dimensional structure in the shape of a circular truncated cone with an upper diameter of 0.5-1 mm and a lower diameter of 2-8 mm.

[0010] As an improvement, the boundary size of a single honeycomb cell of the embedded film honeycomb core is equal to the distance between adjacent perforations; the size and shape of the embedded film are the same as the surface of the honeycomb cell, and the embedded film is horizontally embedded in the honeycomb core; the films in adjacent honeycomb cells are not in the same plane, and are 2 mm above and below the center line of the thickness of the honeycomb core.

[0011] As an improvement, the center line of a single honeycomb cell, the center line of the embedded film of the embedded film honeycomb core, and the center line of the perforation of the micro-glass fiber grid reinforced phenolic resin perforated plate are coincident.

[0012] As an improvement, the embedded film is a composite film structure of a hydrogel film and a rubber film, wherein the hydrogel film comprises a film structure prepared from polyvinyl alcohol, polypyrrole and graphene, and the film structure further comprises carbon nanotubes and meta-aramid nanofibers as a reinforcing phase; the nanofibers have a diameter of 20-50 nm, the carbon nanotubes are single-walled, and vanadium pentoxide is filled in the carbon nanotubes; the mass fraction ratio of the carbon nanotubes / meta-aramid is (10-30):(70-90); the mass fraction ratio of polyvinyl alcohol / polypyrrole / graphene in the hydrogel film is (20-50):(10-20):(10-70); the total thickness of the embedded film is 2.5-3 mm, and the thickness of the rubber film is 1.5-2 mm.

[0013] As an improvement, the damping plate is a plate structure of a vacuum heat insulation plate of micro glass fiber core material, and the plate structure is completely covered by a damping layer; the thickness of the damping layer is 1-3 mm, and the damping layer comprises a rubber coating layer added with particles, wherein the damping layer comprises fluorocarbon resin with a mass fraction of 5-10%, fumed silica with a mass fraction of 2-4%, pearl sand with a mass fraction of 2-5%, and carbon black with a mass fraction of 1-3%, and the rest is rubber.

[0014] As an improvement, the lower surface of the micro glass fiber grid reinforced resin perforated plate, the embedded film honeycomb core, and the embedded film honeycomb core and the damping plate are all bonded by a phenolic resin / polyvinyl alcohol two-component adhesive, and the mass fraction ratio of the phenolic resin and the polyvinyl alcohol is 80-85:15-20.

[0015] Beneficial effects: compared with conventional honeycomb composite plates, the advantages of the present application are that:

[0016] (1) The micro glass fiber grid reinforced resin perforated plate can effectively block and absorb part of the sound waves while achieving lightweight of the overall material.

[0017] (2) The honeycomb cell structure of the embedded film can effectively realize electromagnetic shielding and damping sound insulation by designing the film structure, and the overall mass is reduced while the noise reduction and electromagnetic shielding effects are optimized.

[0018] (3) The vacuum heat insulation plate composite structure coated with a damping layer and added with particle materials can effectively realize heat insulation and further electromagnetic shielding.

[0019] (4) The overall composite structure is designed as a sandwich structure, and various performances are effectively integrated to realize multifunctional integration. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 The structure of the present application is shown in the figure.

[0021] Fig. 2 The structure of the present application is shown in the figure.

[0022] As shown in the drawings, the micro-fiber mesh reinforced phenolic resin perforated plate 10, the honeycomb cell 20, the embedded film 30, the vacuum insulation plate 40, the damping layer 50, the micro-fiber mesh 60, and the perforation 70. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be further described in detail below with reference to the examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0024] The specific embodiments of the present application will be further described in detail below with reference to the examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application. Figs. 1-2 The specific embodiments of the present application will be further described in detail below with reference to the examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0025] The specific embodiments of the present application will be further described in detail below with reference to the examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0026] The specific embodiments of the present application will be further described in detail below with reference to the examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application. Figs. 1-2 As shown in the drawings, the micro-fiber mesh reinforced phenolic resin perforated plate 10, the honeycomb cell 20, the embedded film 30, the vacuum insulation plate 40, the damping layer 50, the micro-fiber mesh 60, and the perforation 70.

[0027] The micro-fiber mesh reinforced phenolic resin perforated plate 10 is a plate structure with a reinforcing phase of the micro-fiber mesh 60 and a matrix phase of the phenolic resin, and a plurality of perforations 70 passing through the upper and lower portions of the composite structure.

[0028] As a specific embodiment of the present application, the micro-fiber mesh 60 is a structure formed by stacking meshes with edge lengths of 1-3 mm, 4-7 mm, and 8-11 mm in a manner of gradually increasing from top to bottom according to the edge length. The meshes with the same size are arranged in 4-6 layers, and the meshes are filled with pearl sand with a particle size of 0.2-0.6 mm. Further, the meshes with the same size, i.e., the same edge length, are filled with pearl sand with a particle size of 0.2-0.6 mm.

[0029] Preferably, the micro-fiber mesh 60 can be a multi-layer structure formed by stacking meshes with edge lengths of 2 mm, 6 mm, and 10 mm in 4-6 layers according to the edge length from top to bottom.

[0030] The three-dimensional structure of the perforation 70 is frustum-shaped, with an upper diameter of 0.5-1mm and a lower diameter of 2-8mm. The perforation 70 falls within the grid of each layer of microfiber mesh, with the diameter gradually increasing from top to bottom and being smaller than the side length of the grid of each layer of microfiber mesh 60. The maximum spacing between the center lines of adjacent perforations is the side length of the grid of the bottom layer of microfiber mesh 60.

[0031] The embedded thin film honeycomb core is provided with multiple sets of honeycomb cells 20 and embedded thin films 30. The center of each set of honeycomb cells 20 is aligned with the perforation 70. The embedded thin film 30 is located 2 mm above and below the center line of the thickness of the honeycomb cell 20.

[0032] As a specific embodiment of the present invention, the boundary size of a single honeycomb cell 20 is equal to the distance between adjacent perforations 70; the size and shape of the embedded film 30 are the same as the surface of the honeycomb cell 20, and it is horizontally embedded in the honeycomb core; the films in adjacent honeycomb cells are not on the same plane, and are 2 mm above and below the center line of the honeycomb core thickness.

[0033] Among them, the center line of a single cell 20, the center line of the embedded film 30, and the center line of the perforation 70 of the microfiber mesh reinforced phenolic resin perforated plate coincide.

[0034] The embedded film 30 is a composite film structure of hydrogel film and rubber film. The hydrogel film includes a film structure made of polyvinyl alcohol, polypyrrole and graphene. The film structure is also doped with nanofibers made of carbon nanotubes and meta-aramid as a reinforcing phase.

[0035] The total thickness of the embedded film 30 is 1-3 mm, and the thickness of the rubber film is 1.5-2 mm. Among them, the carbon nanotubes are single-walled structures, and vanadium pentoxide is filled inside the carbon nanotubes. The nanofibers prepared by carbon nanotubes / meta-aramid are prepared by electrospinning technology, with a mass fraction ratio of carbon nanotubes / meta-aramid of (10-30):(70-90) and a nanofiber diameter of 20-50 nm. The mass fraction ratio of polyvinyl alcohol / polypyrrole / graphene is (20-50):(10-20):(10-70).

[0036] As a specific embodiment of the present invention, the best preparation effect is achieved when the mass fraction of graphene is 40-50%.

[0037] The damping plate is a composite structure of vacuum insulation board 40 and damping layer 50. Vacuum insulation board 40 uses micro glass fiber core material, and the exterior of vacuum insulation board 40 is completely covered by damping layer 50.

[0038] The damping layer 50 has a thickness of 1-3 mm and consists of a rubber coating with added particles. The damping layer includes 5-10% by mass of fluorocarbon resin and the particles include 2-4% by mass of fumed silica, 2-5% by mass of perlite, and 1-3% by mass of carbon black.

[0039] The addition of fluorocarbon resin improves hydrophobic properties, while the addition of fumed silica and perlite further enhances the thermal insulation effect. Additionally, the carbon black and carbon nanotubes filled with vanadium pentoxide and graphene provide electromagnetic shielding.

[0040] The lower surface of the microfiber reinforced resin perforated plate 10 and the embedded thin-film honeycomb core, as well as the embedded thin-film honeycomb core and the damping plate, are all bonded together with a phenolic resin / polyvinyl alcohol two-component adhesive, with a mass ratio of phenolic resin to polyvinyl alcohol of 85:15-80:20. By designing the adhesive as a phenolic resin / polyvinyl alcohol two-component adhesive in this invention, the bonding can possess certain flexibility and damping characteristics.

[0041] Example 1

[0042] From top to bottom, the structure includes a microfiber mesh reinforced phenolic resin perforated plate 10, an embedded thin-film honeycomb core, and a damping plate. The microfiber mesh reinforced phenolic resin perforated plate 10 is a composite structure consisting of a microfiber mesh fabric 60 as the reinforcing phase and phenolic resin as the matrix phase, with multiple sets of perforations 70 extending vertically through the composite structure. The embedded thin-film honeycomb core has multiple sets of honeycomb cells 20 and embedded thin films 30, with the center of each honeycomb cell 20 aligned with the center of the perforation 70. The embedded thin film 30 is positioned 2mm above and below the centerline of the honeycomb cell 20's thickness. The damping plate is a composite structure formed by stacking a vacuum insulation board 40 and a damping layer 50.

[0043] The microfiberglass mesh 60 is constructed by selecting mesh side lengths of 2mm, 6mm, and 10mm, and setting 4-6 layers of each mesh size. These layers are then stacked in a manner that gradually increases in size from top to bottom, according to the mesh side length. Furthermore, each layer of mesh of the same size (i.e., the same side length) is filled with 0.4mm perlite.

[0044] The three-dimensional structure of the perforation 70 is frustum-shaped, with an upper diameter of 0.75 mm and a lower diameter of 6 mm; the total thickness of the embedded film is 2.5 mm, and the thickness of the rubber film is 1.5 mm.

[0045] The mass fraction ratio of carbon nanotubes to meta-aramid fibers is 10:90, and the nanofiber diameter is 35 nm; the mass fraction ratio of polyvinyl alcohol to polypyrrole to graphene is 45:20:35.

[0046] The damping layer 50 has a thickness of 2 mm and consists of a rubber coating with added particles. The damping layer includes 8% by mass of fluorocarbon resin; the particles include 4% by mass of fumed silica, 3.5% by mass of perlite, and 2.5% by mass of carbon black, with the remainder being rubber.

[0047] The lower surface of the microfiber mesh reinforced resin perforated plate 10 and the embedded thin film honeycomb core, as well as the embedded thin film honeycomb core and the damping plate, are all bonded together by a phenolic resin / polyvinyl alcohol two-component adhesive, with a mass fraction ratio of phenolic resin to polyvinyl alcohol of 82:18.

[0048] Example 2

[0049] From top to bottom, the structure includes a microfiber mesh reinforced phenolic resin perforated plate 10, an embedded thin-film honeycomb core, and a damping plate. The microfiber mesh reinforced phenolic resin perforated plate 10 is a composite structure with a microfiber mesh fabric 60 as the reinforcing phase and phenolic resin as the matrix phase, and multiple sets of perforations 70 extending vertically through the composite structure. The embedded thin-film honeycomb core has multiple sets of honeycomb cells 20 and embedded thin films 30, with the center of each honeycomb cell 20 aligned with the center of the perforation 70. The embedded thin film 30 is positioned 2mm above and below the centerline of the honeycomb cell 20's thickness. The damping plate is a structure formed by superimposing a vacuum insulation board 40 and a damping layer 50.

[0050] The microfiberglass mesh 60 is constructed by first selecting three mesh lengths of 2mm, 6mm, and 10mm, and then setting 4-6 layers of each mesh length, stacking them in a manner that gradually increases the mesh length from top to bottom. Furthermore, each layer of mesh of the same size (i.e., the same side length) is filled with 0.2mm perlite.

[0051] The three-dimensional structure of the perforation 70 is frustum-shaped, with an upper diameter of 0.5 mm and a lower diameter of 2 mm; the total thickness of the embedded film is 3.0 mm, and the thickness of the rubber film is 2.0 mm.

[0052] The mass fraction ratio of carbon nanotubes to meta-aramid fibers is 20:80, and the nanofiber diameter is 35 nm; the mass fraction ratio of polyvinyl alcohol to polypyrrole to graphene is 20:40:40.

[0053] The damping layer 50 has a thickness of 2 mm and consists of a rubber coating with added particles. The damping layer includes 10% by mass of fluorocarbon resin; the particles include 2% by mass of fumed silica, 5% by mass of perlite, and 1% by mass of carbon black, with the remainder being rubber.

[0054] The lower surface of the microfiber mesh reinforced resin perforated plate 10 and the embedded thin film honeycomb core, as well as the embedded thin film honeycomb core and the damping plate, are all bonded together by a phenolic resin / polyvinyl alcohol two-component adhesive, with a mass fraction ratio of phenolic resin to polyvinyl alcohol of 85:15.

[0055] Example 3

[0056] From top to bottom, the structure includes a microfiber mesh reinforced phenolic resin perforated plate 10, an embedded thin-film honeycomb core, and a damping plate. The microfiber mesh reinforced phenolic resin perforated plate 10 is a composite structure with a microfiber mesh fabric 60 as the reinforcing phase and phenolic resin as the matrix phase, and multiple sets of perforations 70 extending vertically through the composite structure. The embedded thin-film honeycomb core has multiple sets of honeycomb cells 20 and embedded thin films 30, with the center of each honeycomb cell 20 aligned with the center of the perforation 70. The embedded thin film 30 is positioned 2mm above and below the center line of the honeycomb cell 20. The damping plate is a composite structure formed by stacking a vacuum insulation plate 40 and a damping layer 50.

[0057] The microfiberglass mesh 60 is constructed by first selecting three mesh lengths of 2mm, 6mm, and 10mm, and then setting 4-6 layers of each mesh length, stacking them in a manner that gradually increases the mesh length from top to bottom. Furthermore, each layer of mesh of the same length (i.e., the same specification) is filled with 0.6mm perlite.

[0058] The three-dimensional structure of the perforation 70 is frustum-shaped, with an upper diameter of 1 mm and a lower diameter of 8 mm; the total thickness of the embedded film is 2.75 mm, and the thickness of the rubber film is 1.75 mm.

[0059] The mass fraction ratio of carbon nanotubes to meta-aramid fibers is 30:70, and the nanofiber diameter is 20 nm; the mass fraction ratio of polyvinyl alcohol to polypyrrole to graphene is 20:10:70.

[0060] The damping layer 50 has a thickness of 2 mm and consists of a rubber coating with added particles. The damping layer includes 5% by mass of fluorocarbon resin; the particles include 3.5% by mass of fumed silica, 2% by mass of perlite, and 3% by mass of carbon black, with the remainder being rubber.

[0061] The lower surface of the microfiber mesh reinforced resin perforated plate 10 and the embedded thin film honeycomb core, as well as the embedded thin film honeycomb core and the damping plate, are all bonded together by a phenolic resin / polyvinyl alcohol two-component adhesive, with a mass fraction ratio of phenolic resin to polyvinyl alcohol of 80:20.

[0062] The composite plates of the present invention, prepared according to Examples 1-3, underwent the following performance testing experiments, and the data obtained are shown in Table 1.

[0063] Table 1 Performance data of honeycomb composite materials

[0064]

[0065] This invention employs a microfiber mesh reinforced resin perforated plate, achieving lightweight overall material while effectively blocking and absorbing some sound waves. It utilizes an embedded thin film honeycomb cell structure, and through the design of the thin film structure, it effectively achieves electromagnetic shielding and damping sound insulation. This optimizes noise reduction and electromagnetic shielding effects while reducing overall weight, achieving excellent performance with a noise reduction coefficient of 0.6-0.95, a contact angle of 138-145°, a shear modulus of 100-120 MPa, a sound insulation of 60-80 dB, and an electromagnetic shielding of 58-75 dB. Furthermore, this invention employs a vacuum insulation panel composite structure coated with a damping layer and adds particulate materials, effectively achieving heat insulation and further electromagnetic shielding. The overall composite structure is designed as a sandwich structure, effectively integrating various properties to achieve multifunctional integration, achieving a thermal conductivity of 0.002-0.006 W / (m·K).

[0066] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A honeycomb composite panel integrating thermal insulation, noise reduction, and electromagnetic shielding, characterized in that: From top to bottom, it includes a microfiber mesh reinforced phenolic resin perforated plate (10), an embedded thin film honeycomb core, and a damping plate; wherein the microfiber mesh reinforced phenolic resin perforated plate (10) is a composite structure with multiple sets of perforations (70) running through it from top to bottom, wherein the reinforcing phase of the composite structure is microfiber mesh cloth (60), and the matrix phase is phenolic resin; the embedded thin film honeycomb core is provided with multiple sets of honeycomb cells (20) and embedded thin films (30), the center of each set of honeycomb cells (20) is aligned with the center of the perforations (70), and the embedded thin film (30) is set 2mm above or 2mm below the center line of the honeycomb core thickness; the damping plate is a plate structure in which a vacuum insulation plate (40) of microfiber core material is completely covered by a damping layer (50); The microfiber mesh (60) is a structure made up of three types of meshes with side lengths of 1-3mm, 4-7mm, and 8-11mm, which are stacked in a manner that gradually increases in side length from top to bottom; wherein 4-6 layers of meshes with the same side length are set; The perforations (70) fall within the grid of each layer of microfiber mesh, with the diameter gradually increasing from top to bottom and being smaller than the side length of the grid of each layer of microfiber mesh (60); The perforation (70) is a three-dimensional structure, shaped like a frustum; The embedded film (30) is a composite film structure of hydrogel film and rubber film. The hydrogel film includes a film structure made of polyvinyl alcohol, polypyrrole and graphene. The film structure is also doped with nanofibers made of carbon nanotubes and meta-aramid as a reinforcing phase. The nanofibers have a diameter of 20-50 nm. The carbon nanotubes are single-walled structures and vanadium pentoxide is filled inside the carbon nanotubes. The lower surface of the microfiber mesh reinforced phenolic resin perforated plate (10) and the embedded thin film honeycomb core, as well as the embedded thin film honeycomb core and the damping plate, are all bonded together by a phenolic resin / polyvinyl alcohol two-component adhesive.

2. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1, characterized in that: The mesh is filled with perlite with a particle size of 0.2-0.6mm.

3. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1 or 2, characterized in that: The microfiber mesh (60) is a multi-layer structure with three specifications of mesh side length: 2mm, 6mm and 10mm. All three specifications of mesh are set with 4-6 layers, which are stacked in a way that gradually increases the side length from top to bottom.

4. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1, characterized in that: The maximum spacing between the center lines of adjacent perforations (70) is the side length of the bottom layer of microfiber mesh (60).

5. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1 or 4, characterized in that: The diameter of the upper opening of the perforation (70) is 0.5-1mm, and the diameter of the lower opening is 2-8mm.

6. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1, characterized in that: in, The size and shape of the embedded film (30) are the same as the surface of the cell (20), and it is horizontally embedded in the core of the cell; the films in adjacent cells (20) are not on the same plane.

7. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 6, characterized in that: The center lines of a single cell (20), the center line of the embedded film (30) of the embedded film honeycomb core, and the center line of the perforation (70) of the microfiber mesh reinforced phenolic resin perforated plate coincide.

8. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1 or 4, characterized in that: The mass fraction ratio of carbon nanotubes to meta-aramid is 10-30: 70-90; the mass fraction ratio of polyvinyl alcohol to polypyrrole to graphene in the hydrogel film is 20-50: 10-20: 10-70; the total thickness of the embedded film (30) is 2.5-3 mm, and the thickness of the rubber film is 1.5-2 mm.

9. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1, characterized in that: The damping layer (50) has a thickness of 1-3 mm and includes a rubber coating with added particles. The damping layer contains 5-10% by mass of fluorocarbon resin, 2-4% by mass of fumed silica, 2-5% by mass of perlite, 1-3% by mass of carbon black, and the remainder is rubber.

10. The integrated honeycomb composite panel for thermal insulation, noise reduction, and electromagnetic shielding according to claim 1, characterized in that: The mass fraction ratio of phenolic resin and polyvinyl alcohol in the two-component adhesive is 80-85: 15-20.

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