Aerogel composite core material vacuum insulation panel and preparation method thereof

Abstract

This invention discloses an aerogel composite core vacuum insulation panel and its preparation method, comprising a composite core and a barrier membrane, wherein the barrier membrane is sealed and covered on the outside of the composite core. The composite core is composed of the following raw materials in parts by weight: 50-80 parts of aerogel matrix, 10-30 parts of reinforcing skeleton, and 5-20 parts of functional filler. The aerogel matrix is ​​silica aerogel with a specific surface area of ​​600-800 m² / g and a pore size of 20-50 nm. The reinforcing skeleton is a continuous glass fiber mat modified with a silane coupling agent. The functional filler is composed of nano-silica and carbon nanotubes. This invention uses silica aerogel as the matrix, combined with a continuous glass fiber mat reinforcing skeleton and functional filler. Through reasonable proportioning and modification treatment, the composite core combines the low thermal conductivity of aerogel with the high strength of glass fiber mat, achieving a flexural strength of 5-8 MPa and a thermal conductivity as low as 0.008-0.01 W / (m·K), which is significantly superior to existing core materials.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation materials technology, specifically to an aerogel composite core vacuum insulation board and its preparation method. Background Technology

[0002] Vacuum insulation panels, with their superior thermal insulation performance, have become a key material in refrigerators, cold chain transportation, and building energy conservation. However, the performance of existing vacuum insulation panel core materials still has significant shortcomings. Traditional organic core materials, such as polyurethane foam and polystyrene foam, while possessing certain thermal insulation capabilities, generally have heat resistance temperatures below 150℃. Under high-temperature conditions, they are prone to thermal degradation, releasing toxic substances such as formaldehyde. Furthermore, their mechanical strength decreases sharply with increasing temperature, making them unsuitable for high-temperature applications such as automotive engine compartments and industrial kilns. Inorganic core materials, such as glass wool and aluminosilicate wool, offer improved heat resistance, but their weak inter-fiber bonding leads to dust pollution, and their disordered pore structure increases heat loss due to gas convection. Their thermal conductivity is typically above 0.02 W / (m·K), resulting in limited insulation efficiency. Therefore, some new types of vacuum insulation panels and their preparation methods have emerged on the market.

[0003] For example, invention patent CN112856102B discloses an aerogel fiber core vacuum insulation panel, its preparation method, and its application. The aerogel fiber core vacuum insulation panel includes: a core material comprising aerogel fibers, fiber products formed from the aerogel fibers, a composite fiber product formed by blending the aerogel fibers with a binder, and a high-barrier membrane, which is disposed around the core material to form a closed structure. The thermal conductivity of the aerogel fiber core vacuum insulation panel is less than 10 mW / (m·K), and its density is less than 300 kg / m³. The hierarchical porous structure of the aerogel fiber core material in this design reduces the core material's sensitivity to internal gas pressure, extending the service life of the vacuum insulation panel. Furthermore, the abundant pore structure can capture small amounts of gas generated during the use of the vacuum insulation panel, avoiding the need for getters.

[0004] The aerogel fiber core vacuum insulation panels provided by the aforementioned patent primarily reduce the core material's sensitivity to internal air pressure, thereby extending the service life of the vacuum insulation panels. However, existing research on aerogel composite core materials mostly employs simple physical mixing methods, such as mechanically stirring aerogel particles with glass fibers. This method fails to address the weak interfacial bonding between the aerogel and fiber, resulting in delamination and pulverization of the composite core material. Furthermore, in traditional vacuum encapsulation processes, the core material pretreatment relies solely on drying, which is insufficient to completely remove adsorbed water and air from the aerogel pores. This leads to a short vacuum maintenance time after encapsulation (typically less than one year), limiting the service life of the vacuum insulation panels.

[0005] Therefore, the development of an aerogel composite core vacuum insulation board with low thermal conductivity, high mechanical strength, excellent temperature resistance and long life and its preparation method is of great practical significance. Summary of the Invention

[0006] The purpose of this invention is to provide an aerogel composite core vacuum insulation board and its preparation method, aiming to improve the problems of poor heat resistance, insufficient mechanical properties and low thermal insulation efficiency of the core material of the vacuum insulation board in the prior art.

[0007] This invention is implemented as follows: To achieve the above objectives, according to one aspect of the present invention, an aerogel composite core vacuum insulation panel is provided, comprising a composite core and a barrier membrane, wherein the barrier membrane is sealed and covered over the composite core; the composite core is composed of the following raw materials in parts by weight: 50-80 parts of aerogel matrix, 10-30 parts of reinforcing skeleton, and 5-20 parts of functional filler; the aerogel matrix is ​​silica aerogel with a specific surface area of ​​600-800 m² / g and a pore size of 20-50 nm; the reinforcing skeleton is continuous glass fiber mat modified with a silane coupling agent; and the functional filler is composed of nano-silica and carbon nanotubes.

[0008] Furthermore, the continuous glass fiber mat has a fiber diameter of 5-10 μm, an areal density of 80-120 g / m², and a porosity of 85%-90%; the functional filler has a mass ratio of nano-silica to carbon nanotubes of 3-5:1; the nano-silica has a particle size of 10-20 nm; and the carbon nanotubes are multi-walled carbon nanotubes with a diameter of 10-20 nm and a length of 5-10 μm.

[0009] Furthermore, the barrier membrane is an aluminum-plastic composite membrane with a thickness of 80-120μm, an oxygen permeability of ≤0.1cm³ / (m²・24h・0.1MPa), and a water vapor permeability of ≤0.1g / (m²・24h).

[0010] According to a second aspect of the present invention, the present invention provides a method for preparing an aerogel composite core vacuum insulation panel, the specific steps of which are as follows: S100. Place the continuous glass fiber mat into the soaking and drying integrated equipment, and soak it with silane coupling agent ethanol solution. After soaking, dry it to obtain modified glass fiber mat. S200: Mix tetraethyl orthosilicate, ethanol and deionized water, add catalyst and stir to obtain sol, let the sol stand and age to form gel. S300: Modified glass fiber mat is laid in a mold, gel is poured in, functional fillers are added, and after impregnation and supercritical drying, composite core material is obtained. S400. The composite core material is placed in the barrier membrane, and after pretreatment, it is vacuum heat-sealed to obtain an aerogel composite core material vacuum insulation board.

[0011] Furthermore, in step S100, the mass fraction of the silane coupling agent ethanol solution is 2%-5%, the soaking temperature is 60-80℃, the soaking time is 2-4h, the drying temperature is 100-120℃, and the drying time is 1-2h. In step S200, the volume ratio of tetraethyl orthosilicate, ethanol, and deionized water is 1:3-5:1-2; the catalyst is hydrochloric acid, and its addition amount accounts for 2%-5% of the mass of tetraethyl orthosilicate; the stirring reaction temperature is 40-60℃, the reaction time is 1-2h, and the standing aging time is 4-6h. In step S300, the impregnation is carried out under a vacuum of 0.08-0.1 MPa for 1-2 hours; the supercritical drying temperature is 120-150℃, the pressure is 8-12 MPa, and the drying time is 4-6 hours. In step S400, the pretreatment temperature is 80-100℃, the vacuum degree is 1-5Pa, and the pretreatment time is 2-4h; the heat sealing is carried out under the condition of vacuum degree ≤0.1Pa, the heat sealing temperature is 150-180℃, the pressure is 0.3-0.5MPa, and the heat sealing time is 2-5s.

[0012] Furthermore, in step S100, the integrated soaking and drying device includes a base, a soaking tank, and a drying tank. The soaking tank and the drying tank are disposed on the upper surface of the base, and the top of the side of the soaking tank near the drying tank is provided with a guide head. The bottom of the inner side of the guide head is provided with a first extrusion roller. An extrusion assembly is provided above the first extrusion roller. The bottom of the extrusion assembly is pressed against the top of the first extrusion roller. A heater is provided on one side of the drying tank, and a flow guide box is provided on the other side. The flow guide box is used to drive the airflow through the heater and into the interior of the drying tank.

[0013] Furthermore, the base has a display screen on its side, multiple control buttons symmetrically arranged on both sides of the display screen, two insert plates on the upper surface of the base, multiple connecting slots on the side of the base, support feet at the corners of the bottom surface of the base, and connecting wires on the side of the base, with power plugs at the ends of the connecting wires. The soaking tank has a drain pipe on its side aligned with the bottom of its inner cavity. The drain pipe is equipped with a throttle valve. The bottom of the soaking tank has a groove fitted onto the insert plate. The bottom of the side of the soaking tank is equipped with a first set screw aligned with the groove. The guide head has an installation port on both sides above the first extrusion roller. The installation port has guide grooves on both sides inside. The upper surface of the guide head has multiple threaded grooves on both sides of the installation port. The extrusion assembly includes a second extrusion roller, a mounting plate, and a pressure plate. Two mounting plates and two pressure plates are provided. A second bearing is provided on the side of the mounting plate facing the second extrusion roller. Both ends of the second extrusion roller are interference-fitted with the second bearings of the two mounting plates. Guide protrusions are provided on both sides of the mounting plate, and these protrusions are inserted into guide grooves. Multiple slots are provided on the top of the mounting plate. Pressure springs are provided on the bottom of the pressure plates at positions aligned with the slots. An end plate is provided at the bottom of each pressure spring, and a connector is provided on the bottom surface of the end plate. The connector is inserted into the inside of the slot. Multiple countersunk holes are provided on both sides of the pressure plate, and the pressure plate is fixed to the guide head by bolts.

[0014] Furthermore, the drying oven includes a box body and a door. The top of the box body has a feed inlet, and the inside of the feed inlet has a feed roller. The bottom of the front face of the box body has a discharge outlet, and the two sides of the discharge outlet have symmetrical ear plates, with a discharge roller between the two ear plates. The inside of the box body has multiple guide rollers arranged alternately from top to bottom to guide the continuous glass fiber mat, thereby increasing the time the continuous glass fiber mat spends inside the box body. The bottom surface of the box body has a groove, and the side of the box body has multiple second set screws aligned with the groove. Both sides of the box body have ventilation holes. The front face of the box body has an operating port above the discharge outlet. The front face of the box body has symmetrical slots on both sides of the operating port. The slots have a T-shaped cross-section. The operating port has a door. The door has a locking rod facing the slot, which engages with the inside of the slot. The outer side of the door has a handle for flexible disassembly and assembly of the door.

[0015] Furthermore, both ends of the heater are provided with through holes, the inner side of the heater is provided with heating wires, and the top and bottom of the heater are provided with first fixing plates, the first fixing plates are provided with first fixing holes, the bottom of the heater is provided with a first connecting line, the bottom of the first connecting line is provided with a first connecting plug, and the first connecting plug is plugged into the base. The top and bottom of the diversion box are provided with a second fixing plate, and the second fixing plate is provided with a plurality of second fixing holes. The outer side of the diversion box is provided with a plurality of exhaust fans. The bottom of the diversion box is provided with a second connecting line, and the end of the second connecting line is provided with a second connecting plug. The second connecting plug is electrically connected to the base. The diversion box and the heater are fixed to both sides of the drying box by bolts.

[0016] Furthermore, it also includes a winding assembly. The upper surface of the base is symmetrically provided with support plates on both sides of the front of the drying chamber. A first bearing is provided on the top of each support plate. The winding assembly includes a winding motor, an adapter, and a winding shaft. Two adapters are provided, each interference-fitted with the first bearing. The winding shaft is positioned between the two adapters, and a retaining plate is provided at the end of each adapter facing the winding shaft. A locking slot is provided on the side of the winding shaft aligned with the retaining plate, and the locking slot engages with the retaining plate. A third set screw is provided on the side of the winding shaft aligned with the retaining plate. A drive slot is provided at the end of the adapter facing the winding motor, and the output end of the winding motor is inserted into the drive slot. Multiple mounting feet are provided at the end of the winding motor that is in contact with the support plate, and mounting holes are provided on the mounting feet. The winding motor is fixed to the support plate with bolts. A third connecting line is provided on the side of the winding motor, and a third connecting plug is provided at the end of the third connecting line. The third connecting plug is electrically connected to the base.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses silica aerogel as the matrix, combined with continuous glass fiber mat reinforcing skeleton and functional filler. Through reasonable proportioning and modification treatment, the composite core material has both the low thermal conductivity of aerogel and the high strength of glass fiber mat. The flexural strength can reach 5-8MPa, and the thermal conductivity is as low as 0.008-0.01W / (m·K), which is significantly better than existing core materials.

[0018] 2. The present invention utilizes nano-silica in functional fillers to fill the pores of aerogel, reducing heat loss from gas convection, and carbon nanotubes to enhance heat reflection and reduce radiative heat transfer, thereby further improving the thermal insulation efficiency.

[0019] 3. The present invention significantly improves the interfacial bonding force between the reinforced skeleton and the aerogel matrix after modification with a silane coupling agent, effectively solving the problems of delamination and pulverization of composite core materials.

[0020] 4. The present invention uses a supercritical drying process in the preparation process to avoid the collapse of pores caused by surface tension during the drying process of aerogel, thus ensuring the integrity of its porous structure; the pretreatment step before vacuum sealing can completely remove adsorbed water and air from the composite core material, thereby extending the vacuum maintenance time after sealing and thus extending the service life of the vacuum insulation board.

[0021] 5. The raw materials used in this invention are relatively inexpensive, the preparation process is simple and easy to implement, it is suitable for large-scale industrial production, and has broad application prospects. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the cross-section of the vacuum insulation panel of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the vacuum insulation panel of the present invention; Figure 3 This is a flowchart of the preparation method of the present invention; Figure 4 This is a schematic diagram of the integrated soaking and drying equipment of the present invention; Figure 5 This is a schematic diagram of the structure of the base of the present invention; Figure 6 This is a schematic diagram of the immersion tank of the present invention; Figure 7 This is a schematic diagram of the extrusion assembly of the present invention; Figure 8 This is a schematic diagram of the drying oven of the present invention; Figure 9 This is a schematic diagram of the structure of the heater of the present invention; Figure 10 This is a schematic diagram of the drainage box of the present invention; Figure 11 This is a schematic diagram of the structure of the winding assembly of the present invention.

[0023] In the diagram: 1. Composite core material; 2. Barrier film; 3. Base; 31. Display screen; 32. Control button; 33. Insert plate; 34. Connecting slot; 35. Support leg; 36. Support plate; 37. First bearing; 38. Connecting wire; 39. Connecting plug; 4. Soaking tank; 41. Drain pipe; 42. Throttling valve; 43. First set screw; 44. Guide head; 45. First extrusion roller; 46. Mounting port; 47. Guide groove; 48. Threaded groove; 5. Extrusion assembly; 51. Second extrusion roller; 52. Mounting plate; 521. Second bearing; 522. Guide protrusion; 523. Slot; 53. Pressure plate; 531. Countersunk hole; 532. Pressure spring; 533. End plate; 534. Connector; 6. Drying oven; 61. Box body; 610. Feed inlet; 611. Second set screw; 612. Discharge. 613. Ear plate; 614. Discharge roller; 615. Operating port; 616. Slot; 617. Vent hole; 618. Guide roller; 619. Feed roller; 62. Box door; 621. Locking rod; 622. Handle; 7. Heater; 71. Through hole; 72. First fixing plate; 73. First fixing hole; 74. First connecting line; 75. First connecting plug; 8. Drain box; 81. Exhaust fan; 82. Second fixing plate; 83. Second fixing hole; 84. Second connecting line; 85. Second connecting plug; 9. Rewinding assembly; 91. Rewinding motor; 911. Mounting foot; 912. Mounting hole; 913. Third connecting line; 914. Third connecting plug; 92. Adapter; 921. Locking plate; 922. Drive slot; 93. Rewinding shaft; 931. Bayonet; 932. Third set screw. Detailed Implementation

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1

[0026] like Figure 1 and Figure 2 As shown, an aerogel composite core vacuum insulation panel includes a composite core 1 and a barrier membrane 2, with the barrier membrane 2 sealingly covering the outside of the composite core 1. The composite core 1 is composed of the following raw materials in parts by weight: 50 parts aerogel matrix, 10 parts reinforcing skeleton, and 5 parts functional filler. The aerogel matrix is ​​silica aerogel with a specific surface area of ​​600 m² / g and a pore size of 20 nm. The reinforcing skeleton is continuous glass fiber mat modified with a silane coupling agent. The functional filler is composed of nano-silica and carbon nanotubes. The continuous glass fiber mat has a fiber diameter of 5 μm, an areal density of 80 g / m², and a porosity of 85%. The mass ratio of nano-silica to carbon nanotubes in the functional filler is 3:1. The nano-silica has a particle size of 10 nm. The carbon nanotubes are multi-walled carbon nanotubes with a diameter of 10 nm and a length of 5 μm. The barrier membrane 2 is an aluminum-plastic composite membrane with a thickness of 80μm, an oxygen permeability of ≤0.1cm³ / (m²・24h・0.1MPa), and a water vapor permeability of ≤0.1g / (m²・24h). Example 2

[0027] like Figure 1 and Figure 2As shown, an aerogel composite core vacuum insulation panel includes a composite core 1 and a barrier membrane 2, with the barrier membrane 2 sealingly covering the outside of the composite core 1. The composite core 1 is composed of the following raw materials in parts by weight: 80 parts aerogel matrix, 30 parts reinforcing skeleton, and 20 parts functional filler. The aerogel matrix is ​​silica aerogel with a specific surface area of ​​800 m² / g and a pore size of 50 nm. The reinforcing skeleton is continuous glass fiber mat modified with a silane coupling agent. The functional filler is composed of nano-silica and carbon nanotubes. The continuous glass fiber mat has a fiber diameter of 10 μm, an areal density of 120 g / m², and a porosity of 90%. The mass ratio of nano-silica to carbon nanotubes in the functional filler is 5:1. The nano-silica has a particle size of 20 nm. The carbon nanotubes are multi-walled carbon nanotubes with a diameter of 20 nm and a length of 10 μm. The barrier membrane 2 is an aluminum-plastic composite membrane with a thickness of 120μm, an oxygen permeability of ≤0.1cm³ / (m²・24h・0.1MPa), and a water vapor permeability of ≤0.1g / (m²・24h). Example 3

[0028] like Figure 3 As shown, a method for preparing an aerogel composite core vacuum insulation panel is described, and the specific steps of the method are as follows: S100. The continuous glass fiber mat is placed inside the soaking and drying integrated equipment and soaked in a silane coupling agent ethanol solution. After soaking, it is dried to obtain modified glass fiber mat. The mass fraction of the silane coupling agent ethanol solution is 2%, the soaking temperature is 60℃, the soaking time is 2h, the drying temperature is 100℃, and the drying time is 1h.

[0029] S200: Tetraethyl orthosilicate, ethanol, and deionized water are mixed, and a catalyst is added and stirred to obtain a sol. The sol is then allowed to stand and age to form a gel. The volume ratio of tetraethyl orthosilicate, ethanol, and deionized water is 1:3:1. The catalyst is hydrochloric acid, which is added at 2% of the mass of tetraethyl orthosilicate. The stirring reaction temperature is 40℃, the reaction time is 1 hour, and the aging time is 4 hours.

[0030] S300. Modified glass fiber mat is laid in a mold, gel is poured in, functional filler is added, and composite core material 1 is obtained after impregnation and supercritical drying. Impregnation is carried out under a vacuum of 0.08 MPa for 1 hour. The supercritical drying temperature is 120℃, the pressure is 8 MPa, and the drying time is 4 hours.

[0031] S400. The composite core material 1 is placed in the barrier membrane 2, and after pretreatment, it is vacuum heat-sealed to obtain the aerogel composite core material 1 vacuum insulation board. The pretreatment temperature is 80℃, the vacuum degree is 1Pa, and the pretreatment time is 2h. The heat sealing is carried out under the condition of vacuum degree ≤0.1Pa, the heat sealing temperature is 150℃, the pressure is 0.3MPa, and the heat sealing time is 2s. Example 4

[0032] like Figure 3 As shown, a method for preparing an aerogel composite core vacuum insulation panel is described, and the specific steps of the method are as follows: S100. The continuous glass fiber mat is placed inside the soaking and drying integrated equipment and soaked in a silane coupling agent ethanol solution. After soaking, it is dried to obtain modified glass fiber mat. The mass fraction of the silane coupling agent ethanol solution is 5%, the soaking temperature is 80℃, the soaking time is 4h, the drying temperature is 120℃, and the drying time is 2h.

[0033] S200: Tetraethyl orthosilicate, ethanol, and deionized water are mixed, and a catalyst is added and stirred to obtain a sol. The sol is then allowed to stand and age to form a gel. The volume ratio of tetraethyl orthosilicate, ethanol, and deionized water is 1:5:2. The catalyst is hydrochloric acid, which accounts for 5% of the mass of tetraethyl orthosilicate. The stirring reaction temperature is 60℃, the reaction time is 2h, and the aging time is 6h.

[0034] S300. Modified glass fiber mat is laid in a mold, gel is poured in, functional filler is added, and composite core material 1 is obtained after impregnation and supercritical drying. Impregnation is carried out under a vacuum of 0.1 MPa for 2 hours. The supercritical drying temperature is 150℃, the pressure is 12 MPa, and the drying time is 6 hours.

[0035] S400. The composite core material 1 is placed in the barrier membrane 2, and after pretreatment, it is vacuum heat-sealed to obtain the aerogel composite core material 1 vacuum insulation board. The pretreatment temperature is 100℃, the vacuum degree is 5Pa, and the pretreatment time is 4h. The heat sealing is carried out under the condition of vacuum degree ≤0.1Pa, the heat sealing temperature is 180℃, the pressure is 0.5MPa, and the heat sealing time is 5s. Example 5

[0036] like Figure 4As shown, this embodiment provides an integrated soaking and drying device for vacuum insulation panel processing. The integrated soaking and drying device includes a base 3, an soaking tank 4, and a drying tank 6. The base 3 provides convenient support for the entire device, facilitating the installation and use of each component. The soaking tank 4 is convenient for storing the silane coupling agent ethanol solution, thereby facilitating the soaking treatment of continuous glass fiber felt. The soaking tank 4 and the drying tank 6 are disposed on the upper surface of the base 3, and a guide head 44 is provided on the top side of the soaking tank 4 near the drying tank 6. The guide head 44 facilitates the guidance of the soaked continuous glass fiber felt. A first extrusion roller 45 is provided on the bottom inner side of the guide head 44, and an extrusion assembly 5 is provided above the first extrusion roller 45. The bottom of the extrusion assembly 5 is pressed against the top of the first extrusion roller 45. Through the cooperation of the first extrusion roller 45 and the extrusion assembly 5, the silane coupling agent ethanol solution in the continuous glass fiber felt can be squeezed out, avoiding the continuous glass fiber felt containing a large amount of silane coupling agent ethanol solution, which would affect the subsequent drying process. A heater 7 is provided on one side of the drying chamber 6, and a flow box 8 is provided on the other side. The flow box 8 is used to drive the airflow through the heater 7 into the interior of the drying chamber 6, so as to facilitate the drying of the damp continuous glass fiber felt.

[0037] like Figure 5 As shown, a display screen 31 is provided on the side of the base 3, which displays the drying temperature. Multiple control buttons 32 are symmetrically arranged on both sides of the display screen 31, facilitating the operation of the entire device. Two insert plates 33 are provided on the upper surface of the base 3, facilitating the installation of the soaking tank 4 and the drying tank 6. Multiple connecting slots 34 are provided on the side of the base 3, facilitating electrical connection between various components and the base 3. Support feet 35 are provided at the corners of the bottom surface of the base 3, ensuring stability on the ground. A power cord 38 is provided on the side of the base 3, with a power plug 39 at its end; the power cord 38 and power plug 39 facilitate power supply to the base 3, enabling its operation and use.

[0038] like Figure 6As shown, a drain pipe 41 is provided on the side of the soaking tank 4, aligned with the bottom of its inner cavity. A throttle valve 42 is installed on the drain pipe 41. The drain pipe 41, in conjunction with the throttle valve 42, facilitates the discharge of the silane coupling agent ethanol solution after use and also facilitates cleaning of the inside of the soaking tank 4. The bottom of the soaking tank 4 has a groove fitted onto the insert plate 33, and a first set screw 43 is provided on the bottom side of the soaking tank 4, aligned with the groove. The first set screw 43 facilitates fixing the position of the soaking tank 4, ensuring its stable placement. Mounting ports 46 are provided on both sides of the guide head 44 above the first extrusion roller 45. The mounting ports 46 facilitate the installation and use of the extrusion assembly 5. Guide grooves 47 are provided on both sides inside the mounting ports 46. The guide grooves 47 facilitate the guidance of the extrusion assembly 5, allowing it to move up and down under pressure. Multiple threaded grooves 48 are provided on the upper surface of the guide head 44 along both sides of the mounting ports 46. The threaded grooves 48 facilitate the connection between the guide head 44 and the extrusion assembly 5 via bolts.

[0039] like Figure 7 As shown, the extrusion assembly 5 includes a second extrusion roller 51, a mounting plate 52, and a pressure plate 53. Two mounting plates 52 and two pressure plates 53 are provided. A second bearing 521 is provided on the side of the mounting plate 52 facing the second extrusion roller 51. Both ends of the second extrusion roller 51 are interference-fitted with the second bearings 521 of the two mounting plates 52. This structure facilitates the installation of the mounting plate 52 inside the mounting opening 46, and the second bearings 521 facilitate the rotational connection between the second extrusion roller 51 and the mounting plate 52. Guide protrusions 522 are provided on both sides of the mounting plate 52, and these protrusions 522 engage with the guide groove 47. This structure facilitates stable up-and-down movement of the mounting plate 52. The top of the mounting plate 52 has multiple slots 523. Each slot 523 is aligned with a pressure spring 532 on the bottom of the pressure plate 53. The bottom of each pressure spring 532 has an end plate 533, and the bottom surface of the end plate 533 has a connector 534 that inserts into the inside of the slot 523. This structure facilitates a stable connection between the pressure spring 532 at the bottom of the pressure plate 53 and the mounting plate 52, allowing the mounting plate 52 to move stably up and down along the guide groove 47. Multiple countersunk holes 531 are provided on both sides of the pressure plate 53, and the pressure plate 53 is fixed to the guide head 44 with bolts.

[0040] like Figure 8As shown, the drying chamber 6 includes a chamber body 61 and a door 62. The top of the chamber body 61 has a feed inlet 610, and the inner side of the feed inlet 610 has a feed roller 619. The feed inlet 610, in conjunction with the feed roller 619, allows the continuously moistened glass fiber felt to smoothly enter the chamber body 61. The bottom of the front face of the chamber body 61 has a discharge outlet 612. Symmetrical ear plates 613 are provided on both sides of the discharge outlet 612, and a discharge roller 614 is located between the two ear plates 613. The discharge outlet 612, in conjunction with the discharge roller 614, allows the continuously dried glass fiber felt to be smoothly pulled out of the chamber body 61 from the discharge outlet 612. The interior of the housing 61 is equipped with multiple guide rollers 618 arranged alternately from top to bottom to guide the continuous glass fiber mat, thereby increasing the time the continuous glass fiber mat spends inside the housing 61. The bottom surface of the housing 61 has a groove, and multiple second set screws 611 are provided on the sides of the housing 61 aligned with the groove. This structure facilitates the housing 61's placement on the insert plate 33, ensuring the housing 61's stability on the base 3. Both sides of the housing 61 have ventilation holes 617, allowing heated air to flow through the housing 61, thus achieving the purpose of drying the continuous glass fiber mat. The front face of the housing 61 has an operating port 615 above the discharge port 612, allowing operators to sequentially pass the continuous glass fiber mat around the guide rollers 618 from inside the housing 61. The front end of the housing 61 has symmetrical slots 616 on both sides of the operating port 615. The slots 616 have a T-shaped cross-section. A door 62 is provided on the operating port 615. A locking rod 621 is provided on the door 62 facing the slot 616. The locking rod 621 is engaged with the inside of the slot 616. This structure facilitates the door 62 to be locked inside the slot 616, ensuring the stability of the door 62. A handle 622 is provided on the outer side of the door 62 for flexible installation and removal of the door 62.

[0041] like Figure 9 As shown, the heater 7 has through holes 71 on both ends. These holes 71 allow external air to enter and be heated in conjunction with the intake box 8. The heated air then enters the housing 61 through the vent holes 617, facilitating the drying of the continuous fiberglass felt inside the housing 61. A heating wire is located inside the heater 7 to heat the air. The heater 7 also has first fixing plates 72 at both the top and bottom, with first fixing holes 73 for securing it to the side of the housing 61 with bolts. A first connecting wire 74 is located at the bottom of the heater 7, with a first connecting plug 75 at its bottom. The first connecting plug 75 connects to the base 3, facilitating the operation of the heater 7.

[0042] like Figure 10As shown, the top and bottom of the diversion box 8 are equipped with second fixing plates 82, and the second fixing plates 82 have multiple second fixing holes 83 to facilitate fixing the position of the diversion box 8 with bolts. Multiple exhaust fans 81 are provided on the outer side of the diversion box 8 to facilitate airflow from the heater 7 into the chamber 61 and out of the diversion box 8. A second connecting line 84 is provided at the bottom of the diversion box 8, and a second connecting plug 85 is provided at the end of the second connecting line 84. The second connecting plug 85 is electrically connected to the base 3, facilitating the operation and use of the machine. The diversion box 8 and the heater 7 are fixed to both sides of the drying chamber 6 with bolts. Example 6

[0043] like Figure 4 As shown, this embodiment provides an integrated soaking and drying device for vacuum insulation panel processing. The integrated soaking and drying device includes a base 3, an soaking tank 4, and a drying tank 6. The base 3 provides convenient support for the entire device, facilitating the installation and use of each component. The soaking tank 4 is convenient for storing the silane coupling agent ethanol solution, thereby facilitating the soaking treatment of continuous glass fiber felt. The soaking tank 4 and the drying tank 6 are disposed on the upper surface of the base 3, and a guide head 44 is provided on the top side of the soaking tank 4 near the drying tank 6. The guide head 44 facilitates the guidance of the soaked continuous glass fiber felt. A first extrusion roller 45 is provided on the bottom inner side of the guide head 44, and an extrusion assembly 5 is provided above the first extrusion roller 45. The bottom of the extrusion assembly 5 is pressed against the top of the first extrusion roller 45. Through the cooperation of the first extrusion roller 45 and the extrusion assembly 5, the silane coupling agent ethanol solution in the continuous glass fiber felt can be squeezed out, avoiding the continuous glass fiber felt containing a large amount of silane coupling agent ethanol solution, which would affect the subsequent drying process. A heater 7 is provided on one side of the drying chamber 6, and a flow box 8 is provided on the other side. The flow box 8 is used to drive the airflow through the heater 7 into the interior of the drying chamber 6, so as to facilitate the drying of the damp continuous glass fiber felt.

[0044] like Figure 5 As shown, a display screen 31 is provided on the side of the base 3, which displays the drying temperature. Multiple control buttons 32 are symmetrically arranged on both sides of the display screen 31, facilitating the operation of the entire device. Two insert plates 33 are provided on the upper surface of the base 3, facilitating the installation of the soaking tank 4 and the drying tank 6. Multiple connecting slots 34 are provided on the side of the base 3, facilitating electrical connection between various components and the base 3. Support feet 35 are provided at the corners of the bottom surface of the base 3, ensuring stability on the ground. A power cord 38 is provided on the side of the base 3, with a power plug 39 at its end; the power cord 38 and power plug 39 facilitate power supply to the base 3, enabling its operation and use.

[0045] like Figure 6As shown, a drain pipe 41 is provided on the side of the soaking tank 4, aligned with the bottom of its inner cavity. A throttle valve 42 is installed on the drain pipe 41. The drain pipe 41, in conjunction with the throttle valve 42, facilitates the discharge of the silane coupling agent ethanol solution after use and also facilitates cleaning of the inside of the soaking tank 4. The bottom of the soaking tank 4 has a groove fitted onto the insert plate 33, and a first set screw 43 is provided on the bottom side of the soaking tank 4, aligned with the groove. The first set screw 43 facilitates fixing the position of the soaking tank 4, ensuring its stable placement. Mounting ports 46 are provided on both sides of the guide head 44 above the first extrusion roller 45. The mounting ports 46 facilitate the installation and use of the extrusion assembly 5. Guide grooves 47 are provided on both sides inside the mounting ports 46. The guide grooves 47 facilitate the guidance of the extrusion assembly 5, allowing it to move up and down under pressure. Multiple threaded grooves 48 are provided on the upper surface of the guide head 44 along both sides of the mounting ports 46. The threaded grooves 48 facilitate the connection between the guide head 44 and the extrusion assembly 5 via bolts.

[0046] like Figure 7 As shown, the extrusion assembly 5 includes a second extrusion roller 51, a mounting plate 52, and a pressure plate 53. Two mounting plates 52 and two pressure plates 53 are provided. A second bearing 521 is provided on the side of the mounting plate 52 facing the second extrusion roller 51. Both ends of the second extrusion roller 51 are interference-fitted with the second bearings 521 of the two mounting plates 52. This structure facilitates the installation of the mounting plate 52 inside the mounting opening 46, and the second bearings 521 facilitate the rotational connection between the second extrusion roller 51 and the mounting plate 52. Guide protrusions 522 are provided on both sides of the mounting plate 52, and these protrusions 522 engage with the guide groove 47. This structure facilitates stable up-and-down movement of the mounting plate 52. The top of the mounting plate 52 has multiple slots 523. Each slot 523 is aligned with a pressure spring 532 on the bottom of the pressure plate 53. The bottom of each pressure spring 532 has an end plate 533, and the bottom surface of the end plate 533 has a connector 534 that inserts into the inside of the slot 523. This structure facilitates a stable connection between the pressure spring 532 at the bottom of the pressure plate 53 and the mounting plate 52, allowing the mounting plate 52 to move stably up and down along the guide groove 47. Multiple countersunk holes 531 are provided on both sides of the pressure plate 53, and the pressure plate 53 is fixed to the guide head 44 with bolts.

[0047] like Figure 8As shown, the drying chamber 6 includes a chamber body 61 and a door 62. The top of the chamber body 61 has a feed inlet 610, and the inner side of the feed inlet 610 has a feed roller 619. The feed inlet 610, in conjunction with the feed roller 619, allows the continuously moistened glass fiber felt to smoothly enter the chamber body 61. The bottom of the front face of the chamber body 61 has a discharge outlet 612. Symmetrical ear plates 613 are provided on both sides of the discharge outlet 612, and a discharge roller 614 is located between the two ear plates 613. The discharge outlet 612, in conjunction with the discharge roller 614, allows the continuously dried glass fiber felt to be smoothly pulled out of the chamber body 61 from the discharge outlet 612. The interior of the housing 61 is equipped with multiple guide rollers 618 arranged alternately from top to bottom to guide the continuous glass fiber mat, thereby increasing the time the continuous glass fiber mat spends inside the housing 61. The bottom surface of the housing 61 has a groove, and multiple second set screws 611 are provided on the sides of the housing 61 aligned with the groove. This structure facilitates the housing 61's placement on the insert plate 33, ensuring the housing 61's stability on the base 3. Both sides of the housing 61 have ventilation holes 617, allowing heated air to flow through the housing 61, thus achieving the purpose of drying the continuous glass fiber mat. The front face of the housing 61 has an operating port 615 above the discharge port 612, allowing operators to sequentially pass the continuous glass fiber mat around the guide rollers 618 from inside the housing 61. The front end of the housing 61 has symmetrical slots 616 on both sides of the operating port 615. The slots 616 have a T-shaped cross-section. A door 62 is provided on the operating port 615. A locking rod 621 is provided on the door 62 facing the slot 616. The locking rod 621 is engaged with the inside of the slot 616. This structure facilitates the door 62 to be locked inside the slot 616, ensuring the stability of the door 62. A handle 622 is provided on the outer side of the door 62 for flexible installation and removal of the door 62.

[0048] like Figure 9 As shown, the heater 7 has through holes 71 on both ends. These holes 71 allow external air to enter and be heated in conjunction with the intake box 8. The heated air then enters the housing 61 through the vent holes 617, facilitating the drying of the continuous fiberglass felt inside the housing 61. A heating wire is located inside the heater 7 to heat the air. The heater 7 also has first fixing plates 72 at both the top and bottom, with first fixing holes 73 for securing it to the side of the housing 61 with bolts. A first connecting wire 74 is located at the bottom of the heater 7, with a first connecting plug 75 at its bottom. The first connecting plug 75 connects to the base 3, facilitating the operation of the heater 7.

[0049] like Figure 10As shown, the top and bottom of the diversion box 8 are equipped with second fixing plates 82, and the second fixing plates 82 have multiple second fixing holes 83 to facilitate fixing the position of the diversion box 8 with bolts. Multiple exhaust fans 81 are provided on the outer side of the diversion box 8 to facilitate airflow from the heater 7 into the chamber 61 and out of the diversion box 8. A second connecting line 84 is provided at the bottom of the diversion box 8, and a second connecting plug 85 is provided at the end of the second connecting line 84. The second connecting plug 85 is electrically connected to the base 3, facilitating the operation and use of the machine. The diversion box 8 and the heater 7 are fixed to both sides of the drying chamber 6 with bolts.

[0050] like Figure 4 , Figure 5 and Figure 11 As shown, it also includes a winding assembly 9. Support plates 36 are symmetrically arranged on the upper surface of the base 3 along the front sides of the drying chamber 6. A first bearing 37 is provided on the top of the support plate 36. The cooperation between the support plate 36 and the first bearing 37 facilitates the installation of the winding assembly 9, facilitates the stable use of the winding assembly 9, and facilitates the winding of the dried continuous glass fiber felt. The winding assembly 9 includes a winding motor 91, an adapter 92, and a winding shaft 93. Two adapters 92 are provided, and each adapter 92 is interference-fitted with a first bearing 37. The winding shaft 93 is positioned between the two adapters 92, and a retaining plate 921 is provided at one end of the adapter 92 facing the winding shaft 93. A locking slot 931 is provided on the side of the winding shaft 93 aligned with the retaining plate 921, and the locking slot 931 engages with the retaining plate 921. A third set screw 932 is provided on the side of the winding shaft 93 aligned with the retaining plate 921. This structure allows the winding shaft 93 to rotate as a whole with the adapter 92, facilitating the winding of dry continuous glass fiber felt. Simultaneously, the winding shaft 93 is detachable, allowing for easy removal of the winding shaft 93 after winding a sufficient amount of continuous glass fiber felt, thus facilitating the replacement of other winding shafts 93. The adapter 92 has a drive slot 922 at the end facing the take-up motor 91. The output end of the take-up motor 91 is inserted into the drive slot 922. The end of the take-up motor 91 that is in contact with the support plate 36 has multiple mounting feet 911, and mounting holes 912 on the mounting feet 911. The take-up motor 91 is fixed to the support plate 36 with bolts, ensuring that the take-up motor 91 is stably fixed to the support plate 36. The side of the take-up motor 91 has a third connecting line 913, and the end of the third connecting line 913 has a third connecting plug 914. The third connecting plug 914 is electrically connected to the base 3, which facilitates the rotation of the take-up motor 91 and enables the take-up motor 91 to drive the adapter 92 and the take-up shaft 93 to rotate.

[0051] Working principle: First, the base 3 is powered through the connecting wire 38 and the power plug 39. The equipment is started using the control button 32. The continuous glass fiber felt enters the soaking tank 4 and is soaked in the silane coupling agent ethanol solution in the soaking tank 4. After soaking, the continuous glass fiber felt is guided by the guide head 44 to the first extrusion roller 45, and the continuous glass fiber felt passes between the first extrusion roller 45 and the second extrusion roller 51. At this time, the second extrusion roller 51 in the extrusion assembly 5 cooperates with the first extrusion roller 45 under the action of the pressure spring 532 to squeeze out the excess silane coupling agent ethanol solution in the felt, so as to avoid affecting the subsequent drying. Then, one end of the continuous glass fiber felt enters the drying box 6 through the feed port 610, and passes around the multiple guide rollers 618 inside the box body 61 in sequence, and the end is pulled out from the discharge port 612. Simultaneously, the inlet box 8 drives the airflow through the heater 7 into the drying chamber 6. The hot airflow dries the damp felt. During the drying process, the temperature can be viewed on the display screen 31. The continuous glass fiber felt is guided by multiple staggered guide rollers 618 inside the chamber to extend the drying time and ensure the drying effect. The dried felt is led out from the discharge port 612 and connected to the winding shaft 93. The winding motor 91 starts, and its output end drives the adapter 92 and the winding shaft 93 to rotate, winding up the dried felt. After sufficient winding, the winding shaft 93 can be disassembled and replaced. At the same time, the soaking tank 4 can discharge the used solution and clean it through the drain pipe 41 and the throttle valve 42. All components of the equipment are electrically connected to the base 3 through the connecting slot 34 to ensure overall coordinated operation.

[0052] In summary, compared with existing technologies, this application uses silica aerogel as the matrix, combined with a continuous glass fiber mat reinforcing skeleton and functional fillers. Through reasonable proportioning and modification, the composite core material 1 combines the low thermal conductivity of aerogel with the high strength of glass fiber mat, achieving a flexural strength of 5-8 MPa and a thermal conductivity as low as 0.008-0.01 W / (m·K), significantly superior to existing core materials. The nano-silica in the functional filler fills the pores of the aerogel, reducing gas convection heat loss, while carbon nanotubes enhance heat reflection and reduce radiative heat transfer, further improving insulation efficiency. The interfacial bonding force between the reinforcing skeleton and the aerogel matrix is ​​significantly improved after modification with a silane coupling agent, effectively solving the problems of delamination and pulverization in the composite core material 1. By employing supercritical drying technology during the preparation process, the collapse of pores caused by surface tension during the drying process of aerogel is avoided, thus ensuring the integrity of its porous structure. The pretreatment step before vacuum sealing can completely remove adsorbed water and air from the composite core material 1, thereby extending the vacuum maintenance time after sealing and thus extending the service life of the vacuum insulation board.

[0053] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An aerogel composite core vacuum insulation panel, comprising a composite core (1) and a barrier film (2), characterized in that, The barrier membrane (2) is sealed and covered on the outside of the composite core material (1); the composite core material (1) is composed of the following raw materials in parts by weight: 50-80 parts of aerogel matrix, 10-30 parts of reinforcing skeleton, and 5-20 parts of functional filler; the aerogel matrix is ​​silica aerogel with a specific surface area of ​​600-800 m² / g and a pore size of 20-50 nm; the reinforcing skeleton is a continuous glass fiber mat modified with a silane coupling agent; the functional filler is composed of nano-silica and carbon nanotubes.

2. The aerogel composite core vacuum insulation board according to claim 1, characterized in that, The continuous glass fiber mat has a fiber diameter of 5-10 μm, a surface density of 80-120 g / m², and a porosity of 85%-90%; the functional filler has a mass ratio of nano-silica to carbon nanotubes of 3-5:1; the nano-silica has a particle size of 10-20 nm; and the carbon nanotubes are multi-walled carbon nanotubes with a diameter of 10-20 nm and a length of 5-10 μm.

3. The aerogel composite core vacuum insulation board according to claim 2, characterized in that, The barrier membrane (2) is an aluminum-plastic composite membrane with a thickness of 80-120μm, an oxygen permeability of ≤0.1cm³ / (m²・24h・0.1MPa), and a water vapor permeability of ≤0.1g / (m²・24h).

4. A method for preparing an aerogel composite core vacuum insulation panel, used to prepare the aerogel composite core vacuum insulation panel according to claim 3, characterized in that, The specific steps of this method are as follows: S100. Place the continuous glass fiber mat into the soaking and drying integrated equipment, and soak it with silane coupling agent ethanol solution. After soaking, dry it to obtain modified glass fiber mat. S200: Mix tetraethyl orthosilicate, ethanol and deionized water, add catalyst and stir to obtain sol, and let the sol stand and age to form a gel. S300. The modified glass fiber mat is laid in the mold, the gel is poured in, the functional filler is added, and after impregnation and supercritical drying, the composite core material (1) is obtained. S400. The composite core material (1) is placed in the barrier membrane (2), and after pretreatment, it is vacuum heat-sealed to obtain the aerogel composite core material (1) vacuum insulation board.

5. The method for preparing an aerogel composite core vacuum insulation panel according to claim 4, characterized in that, In step S100, the mass fraction of the silane coupling agent ethanol solution is 2%-5%, the soaking temperature is 60-80℃, the soaking time is 2-4h, the drying temperature is 100-120℃, and the drying time is 1-2h. In step S200, the volume ratio of tetraethyl orthosilicate, ethanol, and deionized water is 1:3-5:1-2; the catalyst is hydrochloric acid, and its addition amount accounts for 2%-5% of the mass of tetraethyl orthosilicate; the stirring reaction temperature is 40-60℃, the reaction time is 1-2h, and the standing aging time is 4-6h. In step S300, the impregnation is carried out under a vacuum of 0.08-0.1 MPa for 1-2 hours; the supercritical drying temperature is 120-150℃, the pressure is 8-12 MPa, and the drying time is 4-6 hours. In step S400, the pretreatment temperature is 80-100℃, the vacuum degree is 1-5Pa, and the pretreatment time is 2-4h; the heat sealing is carried out under the condition of vacuum degree ≤0.1Pa, the heat sealing temperature is 150-180℃, the pressure is 0.3-0.5MPa, and the heat sealing time is 2-5s.

6. The method for preparing an aerogel composite core vacuum insulation panel according to claim 4, characterized in that, The soaking and drying integrated device in step S100 includes a base (3), a soaking tank (4), and a drying tank (6). The soaking tank (4) and the drying tank (6) are disposed on the upper surface of the base (3). The top of the side of the soaking tank (4) near the drying tank (6) is provided with a guide head (44). The bottom of the inner side of the guide head (44) is provided with a first extrusion roller (45). An extrusion assembly (5) is provided above the first extrusion roller (45). The bottom of the extrusion assembly (5) is pressed against the top of the first extrusion roller (45). A heater (7) is provided on one side of the drying tank (6), and a flow guide box (8) is provided on the other side. The flow guide box (8) is used to drive the airflow through the heater (7) into the interior of the drying tank (6).

7. The method for preparing an aerogel composite core vacuum insulation panel according to claim 6, characterized in that, The base (3) has a display screen (31) on its side, and multiple control buttons (32) are symmetrically arranged on both sides of the display screen (31). The upper surface of the base (3) has two insert plates (33). The side of the base (3) has multiple connecting slots (34). The bottom corner of the base (3) has a support foot (35). The side of the base (3) has a connecting wire (38). The end of the connecting wire (38) has a power plug (39). The soaking tank (4) has a drain pipe (41) aligned with the bottom of its inner cavity on its side. The drain pipe (41) is equipped with a throttle valve (42). The bottom of the soaking tank (4) is provided with a groove fitted on the insert plate (33). The bottom of the side of the soaking tank (4) is provided with a first set screw (43) aligned with the groove. The guide head (44) has an installation port (46) on both sides above the first extrusion roller (45). The installation port (46) has guide grooves (47) on both sides inside. The upper surface of the guide head (44) has multiple threaded grooves (48) on both sides of the installation port (46). The extrusion assembly (5) includes a second extrusion roller (51), a mounting plate (52), and a pressure plate (53). Two mounting plates (52) and two pressure plates (53) are provided. A second bearing (521) is provided on the side of the mounting plate (52) facing the second extrusion roller (51). Both ends of the second extrusion roller (51) are interference-fitted with the second bearings (521) of the two mounting plates (52). Guide protrusions (522) are provided on both sides of the mounting plate (52), and these guide protrusions (522) engage with guide grooves (47). Inside, the mounting plate (52) has multiple slots (523) on its top. The pressure plate (53) has pressure springs (532) on its bottom surface aligned with the slots (523). The pressure springs (532) have end plates (533) at their bottom ends. The end plates (533) have connectors (534) on their bottom surfaces. The connectors (534) are inserted into the inside of the slots (523). The pressure plate (53) has multiple countersunk holes (531) on both sides. The pressure plate (53) is fixed to the guide head (44) with bolts.

8. The method for preparing an aerogel composite core vacuum insulation panel according to claim 6, characterized in that, The drying oven (6) includes a box body (61) and a box door (62). The top of the box body (61) is provided with a feed inlet (610), and the inside of the feed inlet (610) is provided with a feed roller (619). The bottom of the front face of the box body (61) is provided with a discharge outlet (612). The two sides of the discharge outlet (612) are symmetrically provided with ear plates (613), and a discharge roller (614) is provided between the two ear plates (613). Multiple guide rollers (618) are staggered from top to bottom inside the box body (61) to guide the continuous glass fiber mat, so as to increase the time of the continuous glass fiber mat inside the box body (61). The bottom surface of the box body (61) is provided with a groove, and the sides of the box body (61) are provided with grooves. Multiple second set screws (611) are provided at the position of the alignment groove; ventilation holes (617) are provided on both sides of the box body (61); an operation port (615) is provided on the front end face of the box body (61) above the discharge port (612); a slot (616) is symmetrically provided on both sides of the operation port (615) at the front end of the box body (61); the slot (616) has a T-shaped cross section; a box door (62) is provided on the operation port (615); a locking rod (621) is provided on the box door (62) facing the slot (616); the locking rod (621) is inserted into the inside of the slot (616); a handle (622) is provided on the outer side of the box door (62) for flexible disassembly and assembly of the box door (62).

9. The method for preparing an aerogel composite core vacuum insulation panel according to claim 6, characterized in that, The heater (7) has through holes (71) on both ends, heating wires on the inner side of the heater (7), and first fixing plates (72) on the top and bottom of the heater (7). The first fixing plate (72) has a first fixing hole (73). The heater (7) has a first connecting line (74) at the bottom. The first connecting line (74) has a first connecting plug (75) at the bottom. The first connecting plug (75) is connected to the base (3). The top and bottom of the diversion box (8) are provided with a second fixing plate (82), and the second fixing plate (82) is provided with a plurality of second fixing holes (83). The outer side of the diversion box (8) is provided with a plurality of exhaust fans (81). The bottom of the diversion box (8) is provided with a second connecting line (84), and the end of the second connecting line (84) is provided with a second connecting plug (85). The second connecting plug (85) is electrically connected to the base (3). The diversion box (8) and the heater (7) are fixed to both sides of the drying box (6) by bolts.

10. A method for preparing an aerogel composite core vacuum insulation panel according to any one of claims 6-9, characterized in that, It also includes a winding assembly (9). The upper surface of the base (3) is symmetrically provided with support plates (36) on both sides in front of the drying box (6). The top of the support plate (36) is provided with a first bearing (37). The winding assembly (9) includes a winding motor (91), an adapter (92), and a winding shaft (93). There are two adapters (92), and the two adapters (92) are respectively press-fitted to the first bearing (37). The winding shaft (93) is located between the two adapters (92), and a retaining plate (921) is provided at one end of the adapter (92) facing the winding shaft (93). A slot (931) is provided on the side of the winding shaft (93) aligned with the retaining plate (921). The slot (931) engages with the retaining plate (921). The take-up shaft (93) has a third set screw (932) on its side aligned with the card plate (921); the adapter (92) has a drive slot (922) at one end facing the take-up motor (91), the output end of the take-up motor (91) is inserted into the inside of the drive slot (922), the take-up motor (91) has multiple mounting feet (911) at one end that is in contact with the support plate (36), the mounting feet (911) have mounting holes (912), the take-up motor (91) is fixed to the support plate (36) by bolts, the take-up motor (91) has a third connecting line (913) on its side, the end of the third connecting line (913) has a third connecting plug (914), and the third connecting plug (914) is electrically connected to the base (3).

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