Aerogel vacuum insulation panel and preparation method thereof

Abstract

The invention discloses an aerogel vacuum insulation panel and a preparation method thereof. The aerogel vacuum insulation panel comprises a basic main board, an aerogel layer and a heat insulation layer, the two sides of the heat insulation part are located between the pair of basic main plates through elastic layers; the heat insulation component comprises a blocking layer, a heat insulation layer and a heat insulation layer, the plurality of supporting frameworks form a fixed area and are adjacently filled in the cavity of the barrier layer; the glass fibers and the aerogel are filled in the supporting framework. The multiple supporting frameworks form the fixed area and are adjacently filled in the cavity of the blocking layer, each area is filled with the glass fibers and the aerogel, on one hand, the compressive strength and the deformation resistance strength of the heat insulation component can be improved so that the heat insulation component can be prevented from being impacted in the using process, and on the other hand, the supporting frameworks form a certain degree of interval area so that the heat insulation component can be prevented from being impacted. The glass fiber and aerogel can be divided, so that the glass fiber and the aerogel are uniformly arranged, the problem of different local heat insulation effects is avoided, and the heat insulation performance is improved.

Description

Technical Field

[0001] The invention relates to a thermal insulation board, in particular to an aerogel vacuum insulation board and a preparation method thereof. Background Art

[0002] Traditional insulation panels use glass fiber, glass surface, foamed polyurethane, etc. They have low thermal conductivity and good insulation performance and can be used in specific industries. However, in order to ensure good insulation effect, their overall size is often relatively large. The existing vacuum insulation panels can effectively achieve overall size, especially thickness, while ensuring a small thermal conductivity, so that they can be used in board insulation in different industries.

[0003] The vacuum insulation panel is mainly composed of three parts: core material, barrier film and getter. The core material is the key factor that determines the insulation performance of the vacuum insulation panel. Common core materials include particle core material, foam core material and composite core material, which can effectively avoid heat transfer caused by air convection. Therefore, its thermal conductivity can be greatly reduced, usually less than 0.003W / (m·K), which is only about 1 / 10 of the thermal conductivity of traditional insulation materials.

[0004] Aerogel 35 is the material with the lowest thermal conductivity among solid substances, with a porosity of up to 95-99.8% and a room temperature thermal conductivity as low as 0.007-0.013 W / (m·K). It has the advantages of high temperature resistance, high elasticity, strong adsorption, and catalysis. These characteristics enable aerogel to be used in aerospace, construction materials, environmental protection and other fields.

[0005] Existing vacuum insulation panels mainly use multiple layers of glass fiber or glass wool to form an insulating core material, and then evacuate the entire panel to make it in a vacuum state, while the getter is used to remove residual gas and maintain the vacuum degree. When aerogel is used as a core material in a vacuum insulation panel, it is filled between the glass surface or the glass fiber. However, aerogel is mostly in the form of particles or powder, which has a certain fluidity and is not easy to form. Especially when the insulation panel is in a large area, vacuum evacuation cannot ensure that all aerogels are in a certain range in a short time, which often causes uneven distribution, making the local insulation effect of the vacuum insulation panel different, affecting the insulation performance of the vacuum insulation panel. In addition, when the vacuum insulation panel is in a large area, it requires higher preparation process and technical requirements, and is not convenient to install. Summary of the invention

[0006] The object of the present invention is to provide an aerogel vacuum insulation panel, which can not only increase the compressive strength and deformation resistance to prevent the vacuum insulation panel from being impacted during use, but also make the glass fiber and the aerogel be evenly arranged to avoid the problem of different local insulation effects and improve the insulation performance.

[0007] To achieve the above object, the present invention provides an aerogel vacuum insulation panel, comprising:

[0008] Basic motherboard;

[0009] The heat-insulating component is located between a pair of basic main boards through elastic layers on both sides; the heat-insulating component includes:

[0010] The barrier layer has a closed cavity formed inside and a getter arranged in the cavity;

[0011] A plurality of support skeletons form a fixed area and are adjacently filled in the cavity of the barrier layer;

[0012] Glass fiber and aerogel are filled in the supporting frame.

[0013] In some examples of the present invention, the support frame is a plurality of adjacent hexagonal honeycomb structures, each of which has an area of ​​2-50 cm 2 .

[0014] In some examples of the present invention, the aerogel is one of a silica aerogel and a carbon aerogel;

[0015] The weight percentage of glass fiber in the supporting skeleton is 10-20%, and the weight percentage of silica aerogel or carbon aerogel is 70-90%.

[0016] In some examples of the present invention, the silica aerogel is controlled so that the diameter of the silica powder is in the range of 15-100 nm;

[0017] The diameter of the glass fiber is 5-15 μm and the length is 5-15 mm.

[0018] In some examples of the present invention, a bonding layer is provided on the inner side of the barrier layer;

[0019] The adhesive layer can be made of thermoplastic polyurethane or polyvinyl chloride film.

[0020] In some examples of the present invention, the aerogel vacuum insulation panel is a rectangular structure, wherein two adjacent sides are provided with a snap structure, and two other adjacent sides are provided with a locking rod structure;

[0021] Adjacent aerogel vacuum insulation panels are connected by means of buckles and locking rods.

[0022] In some examples of the present invention, the basic main board uses a galvanized steel sheet as a substrate, and a flame retardant, a catalyst, a filler, nano-scale silica powder, ultrafine dolomite, alumina powder, etc. are stirred and mixed to form a fireproof coating, which is coated on the outside of the galvanized steel sheet;

[0023] or,

[0024] Put heat-insulating polystyrene foam particles, additives, glass fiber and / or fireproof cellulose, and deionized water into a container and mix and stir;

[0025] The stirred mixed slurry is then poured into a mold for heating and curing at a temperature of 80-110°C to form a basic module, which is then cut to form a basic mainboard.

[0026] The present invention also aims to provide a method for preparing an aerogel vacuum insulation panel, wherein a fixed area is formed by multiple support skeletons in the insulation component and is adjacently filled in the cavity of the barrier layer, and each area is filled with glass fiber and aerogel to prevent the vacuum insulation panel from being impacted during use, and the glass fiber and aerogel can be divided so that the glass fiber and aerogel are evenly arranged, thereby avoiding the problem of different local insulation effects and improving the insulation performance.

[0027] A method for preparing an aerogel vacuum insulation panel comprises the following steps:

[0028] S1, select silica aerogel with a porosity of 70%-98% and a diameter of 15-100nm, and glass fiber with a wire diameter of 5-15μm and a length of 5-15mm for drying, place in a high temperature drying environment between 150-220℃ for drying for 20-60min, and then place in a support frame;

[0029] S2, a bonding layer is provided inside the cavity of the barrier layer; the supporting skeleton of the honeycomb structure is filled with silica aerogel and glass fiber, and placed in the closed cavity of the barrier layer, and a vacuum packaging machine is used to evacuate and heat-seal to form an insulating component;

[0030] S3, placing the insulation component between a pair of basic main boards through the elastic layer, and performing folding / sealing treatment to obtain the aerogel vacuum insulation board.

[0031] In some examples of the present invention, the barrier layer is a composite layer, and from the outside to the inside, the composite layer is provided with a liner, an aerogel felt, insulation paper, and a nylon film in sequence.

[0032] Compared with the prior art, the present aerogel vacuum insulation panel has a plurality of support frames in the insulation component to form a fixed area and are adjacently filled in the cavity of the barrier layer, and each area is filled with glass fiber and aerogel. On the one hand, the compressive strength and deformation resistance of the insulation component can be increased to prevent the vacuum insulation panel from being impacted during use. On the other hand, the support frames form a certain degree of spacing area, which can divide the glass fiber and aerogel, so that the glass fiber and aerogel are evenly arranged, avoiding the problem of different local insulation effects and improving the insulation performance.

[0033] Since the supporting skeleton is a plurality of adjacent hexagonal honeycomb structures, the plurality of honeycomb structures can divide the insulation board with a larger area, and can provide a larger surface area per unit volume while ensuring the stability of the support, effectively dispersing and blocking heat transfer, and the extremely low thermal conductivity of the aerogel is combined with the honeycomb structure to form a double-layer insulation, thereby improving the overall insulation effect;

[0034] Since the basic main board can adopt an insulation board with a certain fireproof grade, the insulation component is located between a pair of basic main boards through the elastic layer 20. The aerogel vacuum insulation board can be initially insulated through the basic main board, and then finally insulated through the insulation component, thereby improving the insulation effect and making it suitable for different usage environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is an overall cross-sectional view of the present invention;

[0036] Figure 2 is a cross-sectional view of the heat insulating component of the present invention;

[0037] Figure 3 Schematic diagram of the supporting framework of the honeycomb structure in the present invention;

[0038] In the figure: 10, basic main board;

[0039] 20, elastic layer;

[0040] 30. Insulation component, 31. Barrier layer, 32. Adhesive layer, 33. Support frame, 34. Glass fiber, 35. Aerogel. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] like Figure 1 , Figure 2 As shown, the present invention relates to an aerogel vacuum insulation panel, comprising:

[0044] Basic motherboard 10;

[0045] The heat insulating component 30 has two surfaces located between a pair of basic main boards 10 through the elastic layer 20; the heat insulating component 30 includes:

[0046] The barrier layer 31 has a closed cavity formed inside, and a getter is arranged in the cavity;

[0047] A plurality of support frames 33, forming a fixed area and adjacently filling the cavity of the barrier layer 31;

[0048] Glass fiber 34 and aerogel 35 are filled in the support frame 33;

[0049] Specifically, the basic main board 10 can be made of high temperature resistant board in buildings, which is used for preliminary heat insulation and installation. The basic main board 10 is determined according to the use environment and requirements. For example, the basic main board 10 is made of ceramic fiber board, which can maintain stable performance in high temperature environment and has good corrosion resistance, and is used in aerospace, electronics and other fields; for example, the basic main board 10 is made of high temperature resistant steel plate, which can form a dense oxide film at high temperature to prevent oxidation reaction, and is used in industrial furnaces, petrochemical equipment and other fields;

[0050] The heat insulating component 30 can effectively avoid heat transfer caused by air convection and insulate the whole. The heat insulating component 30 is located between a pair of basic main boards 10 and is transitioned through the elastic layer 20. The elastic layer 20 can be a composite material of silicone and polyurethane, which can ensure elastic and close contact between the heat insulating component 30 and the basic main board 10, and avoid damage to the heat insulating component 30 during transportation or installation.

[0051] The barrier layer 31 may be a pair, that is, a pair of barrier layers 31 are arranged at intervals, and the peripheral side is sealed to form a closed cavity, thereby forming a vacuum structure. The outer peripheral side of the barrier layer 31 may be anti-corrosion treated, or have a certain degree of concavity and convexity to increase the friction with the basic main board 10, so as to achieve the fixation of the thermal insulation component 30 in the basic main board 10; the getter may be made of a composition of barium-lithium alloy, active calcium oxide and cobalt oxide, and can maintain the required vacuum degree for a long time. It is an existing structure and will not be further elaborated here;

[0052] The support frame 33 can be made of nano thermal insulation material or fiber thermal insulation material, located in the cavity, and can form a certain 2-50cm 2 Multiple adjacent areas, each area is filled with glass fiber 34 and aerogel 35; by arranging a support skeleton 33 in the cavity, on the one hand, the compressive strength and deformation resistance of the insulation component 30 can be increased to prevent the vacuum insulation panel from being impacted during use; on the other hand, the support skeleton 33 forms a certain degree of spacing area, which can divide the glass fiber 34 and the aerogel 35, so that the glass fiber 34 and the aerogel 35 are evenly arranged, avoiding the problem of different local insulation effects and improving the insulation performance.

[0053] like Figure 3 As shown, further, the support frame 33 is a plurality of adjacent hexagonal honeycomb structures, and the area of ​​each honeycomb structure is 2-50cm 2 ;

[0054] Specifically, when the overall area of ​​the aerogel vacuum insulation panel is small, a honeycomb structure with a smaller area can be used, and when the overall area of ​​the aerogel vacuum insulation panel is large, a honeycomb structure with a larger area can be used;

[0055] The support skeleton 33 is a hexagonal honeycomb structure. Multiple honeycomb structures can divide the insulation board with a larger area. While ensuring the stability of the support, it can provide a larger surface area per unit volume, effectively disperse and block heat transfer. The extremely low thermal conductivity of the aerogel 35 is combined with the honeycomb structure to form a double-layer insulation, thereby improving the overall insulation effect.

[0056] Further, the aerogel 35 is a kind of silica aerogel or carbon aerogel;

[0057] The weight percentage of glass fiber 34 in the support skeleton 33 is 10-20%, and the weight percentage of silica aerogel or carbon aerogel is 70-90%;

[0058] Specifically, the silica aerogel is controlled so that the diameter of the silica powder is in the range of 15-100 nm, the diameter of the glass fiber 34 is 5-15 μm, and the length is 5-15 mm;

[0059] Furthermore, an adhesive layer 32 is provided on the inner side of the barrier layer 31;

[0060] The adhesive layer 32 may be made of thermoplastic polyurethane or polyvinyl chloride film;

[0061] Specifically, the support frame 33 may be in contact with the adhesive layer 32;

[0062] The adhesive layer 32 can adhere the support frame 33 , the glass fiber 34 in the honeycomb structure and one side of the aerogel 35 , thereby preventing the support frame 33 , the glass fiber 34 and the aerogel 35 from being offset relative to the barrier layer 31 .

[0063] Furthermore, the aerogel vacuum insulation panels can be connected to each other to form a large area structure;

[0064] Specifically, the aerogel vacuum insulation panel can be processed into a modular structure, that is, a plurality of aerogel vacuum insulation panels can be prepared in batches, and the area of ​​each aerogel vacuum insulation panel is standardized;

[0065] Adjacent aerogel vacuum insulation panels are connected by a quick-connect structure. For example, the aerogel vacuum insulation panel is a rectangular structure as a whole, wherein two adjacent sides are provided with a snap-fit ​​structure, and two adjacent sides are provided with a locking rod structure. It is explained that the setting and installation of the snap-fit ​​and the locking rod do not affect the internal insulation component 30;

[0066] When adjacent aerogel vacuum insulation panels are connected, multiple aerogel vacuum insulation panels can be connected over a large area by cooperating with the buckle and the locking rod. Each aerogel vacuum insulation panel has universality. When used over a large area in the fields of aerospace, construction materials, environmental protection, etc., it can be connected according to the use area, thereby increasing the scope of use of the aerogel vacuum insulation panel.

[0067] Furthermore, the basic main board 10 may adopt an insulation board with a certain fireproof grade. As an example, the basic main board 10 may adopt a metal material, that is, a galvanized steel plate is adopted as a substrate, and a flame retardant, a catalyst, a filler, nano-scale silica powder, ultrafine dolomite, alumina powder, etc. are stirred and mixed to form a fireproof coating, and the fireproof coating is coated on the outside of the galvanized steel plate;

[0068] As another example, the basic main board 10 is made of non-metallic material, that is, heat-insulating polystyrene foam particles, additives, glass fiber and / or fireproof cellulose, and deionized water are put into a container and mixed and stirred;

[0069] The stirred mixed slurry is then poured into a mold for heating and curing at a temperature of 80-110° C. to form a basic module, and then the basic module is cut to form a basic mainboard 10;

[0070] In this example, the prepared basic main board 10 can perform preliminary insulation on the aerogel vacuum insulation panel, and then the insulation component 30 can perform final insulation, thereby improving the insulation effect and making it suitable for different use environments.

[0071] The present invention provides a method for preparing an aerogel vacuum insulation panel, which specifically comprises the following steps:

[0072] S1, select silica aerogel with a porosity of 70%-98% and a diameter of 15-100nm, and glass fiber 34 with a diameter of 5-15μm and a length of 5-15mm for drying, that is, place them in a high temperature drying environment between 150-220℃ for drying for 20-60min, and then place them in the support frame 33;

[0073] S2, an adhesive layer 32 is provided inside the cavity of the barrier layer 31, and the adhesive layer 32 can be made of an adhesive film such as polyester fiber, thermoplastic polyurethane film or polyvinyl chloride film;

[0074] The supporting skeleton 33 of the honeycomb structure is filled with silica aerogel and glass fiber 34 and placed in the closed cavity of the barrier layer 31. The vacuum packaging machine is evacuated and heat-sealed to form the heat-insulating component 30.

[0075] As explained, the barrier layer 31 may be a composite layer, for example, from the outside to the inside, the composite layer is provided with a liner, an aerogel felt, an insulation paper, and a nylon film in sequence; the liner is located at the outermost side and can play a role of protection and shaping; an adhesive layer 32 may be provided on the nylon film;

[0076] S3, placing the insulation component 30 between a pair of basic main boards 10 through the elastic layer 20, and performing folding / sealing treatment to obtain the aerogel vacuum insulation board.

[0077] Example 1

[0078] S1, select silica aerogel with a porosity of 70% and a diameter of 15-100nm, and glass fiber 34 with a wire diameter of 5-15μm and a length of 5-15mm for drying, that is, place them in a high temperature drying environment between 200℃ for 40min, and then place them in the support frame 33;

[0079] S2, an adhesive layer 32 is provided inside the cavity of the barrier layer 31, and the adhesive layer 32 can be made of an adhesive film such as polyester fiber, thermoplastic polyurethane film or polyvinyl chloride film;

[0080] The supporting skeleton 33 of the honeycomb structure is filled with silica aerogel and glass fiber 34, and is placed in the closed cavity of the barrier layer 31. The vacuum packaging machine is evacuated to a vacuum degree of 0.1 mbar, and the pressure is maintained for 30 minutes, and then heat-sealed to obtain the thermal insulation component 30 with certain mechanical protection and high and low temperature protection.

[0081] S3, placing the insulation component 30 between a pair of basic main boards 10 through the elastic layer 20, and performing folding / sealing treatment to obtain the aerogel vacuum insulation board.

[0082] Example 2

[0083] S1, select silica aerogel with a porosity of 98% and a diameter of 20nm, and glass fiber 34 with a wire diameter of 10μm and a length of 8mm for drying, that is, place them in a high temperature drying environment at 180°C for 30 minutes, and then place them in the support frame 33;

[0084] S2, a bonding layer 32 is provided inside the cavity of the barrier layer 31, and the bonding layer 32 is made of a thermoplastic polyurethane film or a polyvinyl chloride film;

[0085] The supporting skeleton 33 of the honeycomb structure is filled with silica aerogel and glass fiber 34, and is placed in the closed cavity of the barrier layer 31. The vacuum packaging machine is evacuated to a vacuum degree of 0.1 mbar, and the pressure is maintained for 20 minutes, and then heat-sealed to obtain the thermal insulation component 30. As shown, the higher the vacuum degree, the lower the thermal conductivity.

[0086] S3, placing the insulation component 30 between a pair of basic main boards 10 through the elastic layer 20, and performing folding / sealing treatment to obtain the aerogel vacuum insulation board.

[0087] Example 3

[0088] S1, select silica aerogel with a porosity of 85% and a diameter of 60nm, and glass fiber 34 with a wire diameter of 10μm and a length of 12mm for drying, that is, place them in a high temperature drying environment at 160°C for 30 minutes, and then place them in the support frame 33;

[0089] S2, a bonding layer 32 is provided inside the cavity of the barrier layer 31, and the bonding layer 32 is made of a thermoplastic polyurethane film or a polyvinyl chloride film;

[0090] The supporting skeleton 33 of the honeycomb structure is filled with silica aerogel and glass fiber 34, and is placed in the closed cavity of the barrier layer 31. The vacuum packaging machine is evacuated to a vacuum degree of 0.1 mbar, and the pressure is maintained for 30 minutes, and then heat-sealed to obtain the thermal insulation component 30. As shown, the higher the vacuum degree, the lower the thermal conductivity.

[0091] S3, placing the insulation component 30 between a pair of basic main boards 10 through the elastic layer 20, and performing folding / sealing treatment to obtain the aerogel vacuum insulation board.

[0092] An exemplary implementation of an aerogel vacuum insulation panel proposed in the present invention is described in detail above with reference to a preferred embodiment. However, those skilled in the art will appreciate that, without departing from the concept of the present invention, various modifications and variations may be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present invention may be combined in various ways without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims

1. An aerogel vacuum insulation panel, characterized in that: include: Basic motherboard (10); A heat insulating component (30) is located between a pair of basic main boards (10) via elastic layers (20) on both sides; The heat insulating component (30) comprises: A barrier layer (31) has a closed cavity formed inside, and a getter is arranged in the cavity; A plurality of support frames (33) forming a fixed area and adjacently filling the cavity of the barrier layer (31); Glass fiber (34) and aerogel (35) are filled in the supporting frame (33).

2. The aerogel vacuum insulation panel according to claim 1, characterized in that: The support frame (33) is a plurality of adjacent hexagonal honeycomb structures, each of which has an area of ​​2-50 cm 2 .

3. The aerogel vacuum insulation panel according to claim 1, characterized in that: The aerogel (35) is a kind of silica aerogel or carbon aerogel; The weight percentage of the glass fiber (34) in the supporting skeleton (33) is 10-20%, and the weight percentage of the silicon dioxide aerogel or carbon aerogel is 70-90%.

4. The aerogel vacuum insulation panel according to claim 3, characterized in that: The silica aerogel (35) is controlled so that the diameter of the silica powder is in the range of 15-100 nm; The glass fiber (34) has a diameter of 5-15 μm and a length of 5-15 mm.

5. An aerogel vacuum insulation panel according to any one of claims 1 to 4, characterized in that: An adhesive layer (32) is provided on the inner side of the barrier layer (31); The adhesive layer (32) can be made of thermoplastic polyurethane or polyvinyl chloride film.

6. An aerogel vacuum insulation panel according to any one of claims 1 to 4, characterized in that: The aerogel vacuum insulation panel is a rectangular structure, wherein two adjacent sides are provided with buckle structures respectively, and the other two adjacent sides are provided with locking rod structures; Adjacent aerogel vacuum insulation panels are connected by means of buckles and locking rods.

7. An aerogel vacuum insulation panel according to any one of claims 1 to 4, characterized in that: The basic main board (10) uses a galvanized steel sheet as a substrate, and stirs and mixes a flame retardant, a catalyst, a filler, nano-scale silicon dioxide powder, ultrafine dolomite, aluminum oxide powder, etc. to form a fireproof coating, which is then coated on the outside of the galvanized steel sheet; or, Put heat-insulating polystyrene foam particles, additives, glass fiber and / or fireproof cellulose, and deionized water into a container and mix and stir; The stirred mixed slurry is then poured into a mold for heating and curing at a temperature of 80-110° C. to form a basic module, which is then cut to form a basic mainboard (10).

8. A method for preparing an aerogel vacuum insulation panel, characterized in that: The specific steps include: S1, select silica aerogel (35) with a porosity of 70%-98% and a diameter of 15-100nm, and glass fiber (34) with a diameter of 5-15μm and a length of 5-15mm for drying, place in a high temperature drying environment between 150-220°C for drying for 20-60min, and then place in a support frame (33); S2, a bonding layer (32) is provided inside the cavity of the barrier layer (31); a supporting skeleton (33) of a honeycomb structure is filled with silica aerogel (35) and glass fiber (34), and is placed in the closed cavity of the barrier layer (31); a vacuum packaging machine is used to evacuate and heat-seal the cavity to form a heat-insulating component (30); S3, placing the insulation component (30) between a pair of basic main boards (10) through the elastic layer (20), and performing folding / sealing treatment to obtain the aerogel vacuum insulation board.

9. The method for preparing an aerogel vacuum insulation panel according to claim 8, characterized in that: The barrier layer (31) is a composite layer, and from the outside to the inside, the composite layer is provided with a liner, an aerogel felt, a heat insulation paper, and a nylon film in sequence.

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