Metal surface nano aerogel composite insulation board and manufacturing method thereof

Abstract

The invention relates to a metal surface nano aerogel composite thermal insulation plate and a manufacturing method thereof, the composite thermal insulation plate comprises a thermal insulation layer, two filling layers and two protective layers, the two filling layers are oppositely installed on the two sides of the thermal insulation layer, and the two protective layers are oppositely installed on the sides, away from each other, of the two filling layers. The metal surface aerogel composite heat insulation plate has the beneficial effects that the composite heat insulation plate with the high heat insulation effect and tensile bonding strength is provided, the manufacturing method is simple, industrial production and assembly type installation of the metal surface aerogel composite heat insulation plate are achieved, the labor cost and the safety risk of process operation can be greatly reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation materials technology, specifically to a metal-faced nano-aerogel composite thermal insulation board and its manufacturing method. Background Technology

[0002] Cold storage facilities are storage devices that use artificial refrigeration to maintain a constant temperature and humidity environment. Originating from ice cellars, they cover temperatures from 5°C to -30°C and are used to store food, medicine, vaccines, and other items. They are usually located near shipping ports or the place of origin. Their core components consist of a compressor, condenser, expansion valve, and evaporator. Their cooling area far exceeds that of a household refrigerator. Some cold storage facilities employ hot-air defrosting technology and are equipped with diamond-textured floors.

[0003] In recent years, fires caused by construction work in large cold storage facilities have become increasingly common. According to statistics from the Ministry of Emergency Management, over 90% of cold storage fires are caused by the use of substandard polyurethane insulation materials, and the market offers a wide range of quality insulation materials. In addition, improper operation of polyurethane foaming and inadequate fire prevention measures during construction have resulted in huge losses and heavy casualties. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a metal-faced nano-aerogel composite insulation panel and its manufacturing method.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A metal-faced nano-aerogel composite insulation panel includes: an insulation layer, two filling layers and two protective layers, wherein the two filling layers are installed opposite each other on both sides of the insulation layer, and the two protective layers are installed opposite each other on the side of the two filling layers that are far apart from each other.

[0006] The beneficial effects of this invention are: during use, the insulation layer is used for heat preservation, while the filler layer is used to increase the hardness of the insulation layer to prevent deformation. The filler layer also has heat insulation and waterproof properties. In addition, the two protective layers protect the insulation layer and the two filler layers, extending their service life and reducing costs.

[0007] This invention provides a composite insulation board with high thermal insulation effect and tensile bonding strength. Its manufacturing method is simple, enabling the industrial production and assembly installation of metal-faced aerogel composite insulation boards. This can significantly reduce labor costs and safety risks in the process, and improve construction efficiency.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the insulation layer comprises multiple single layers stacked sequentially.

[0010] The advantages of adopting the above-mentioned further solution are that the structure is simple, the design is reasonable, the insulation layer is composed of multiple single layers, the construction is convenient, and the insulation effect is better.

[0011] Furthermore, the single layer is a nano-aerogel layer with a thickness of (5-15) mm.

[0012] The advantages of adopting the above-mentioned further solution are that the structure is simple, the single layer of nano-aerogel is more reasonable, the nano-aerogel layer has the characteristics of heat insulation and heat preservation, and it is lightweight and easy to construct.

[0013] Furthermore, the two filling layers are polystyrene foam boards with a thickness of (10-20) mm.

[0014] The advantages of adopting the above-mentioned further solutions are that the structure is simple, the use of polystyrene foam board as the filling layer is more reasonable, polystyrene foam board has excellent thermal insulation performance as well as moisture and water resistance, and polystyrene foam board also has high compressive strength, will not deform, is lightweight, and is easy to construct.

[0015] Furthermore, the two protective layers are galvanized steel sheets with a thickness of (0.3-0.8) mm.

[0016] The advantages of adopting the above-mentioned further solutions are that the structure is simple, the protective layer is made of galvanized steel sheet, which has excellent corrosion resistance, excellent paintability and decorative properties, good processability, and can be subjected to complex processes such as bending, stamping, and welding, making it easy to process.

[0017] This invention also relates to a method for manufacturing the metal-faced nano-aerogel composite insulation panel as described above, comprising the following specific steps: S1: Install two filler layers on both sides of the protective layer, and then install the two protective layers on the side of the two filler layers that are far apart from each other to obtain a semi-finished insulation board; Alternatively, one of the filling layers and one of the protective layers can be installed sequentially on one side of the insulation layer, and the other filling layer and the other protective layer can be installed sequentially on the other side of the insulation layer to obtain a semi-finished insulation board; Alternatively, one of the protective layers, one of the filling layers, the insulation layer, the filling layer on the other side, and the other protective layer can be stacked and installed in sequence to obtain a semi-finished insulation board. S2: The semi-finished insulation board is cured and maintained. S3: The semi-finished insulation board is formed by high-pressure stamping.

[0018] The beneficial effect of adopting the above-mentioned further solutions is that the present invention provides a method for manufacturing a metal-faced nano-aerogel composite insulation board. This method is simple and can realize the industrial production and assembly installation of the metal-faced aerogel composite insulation board. It can significantly reduce labor costs and safety risks in the process operation, and improve construction efficiency.

[0019] Furthermore, in S1, the insulation layer comprises multiple single layers with a thickness of (5-15) mm, and adjacent single layers are bonded together with an adhesive and then left to stand for (12-36) hours.

[0020] The advantages of adopting the above-mentioned further solution are that the method is simple and the design is reasonable. The two adjacent single layers are glued together with adhesive and then left to stand for (12-36) hours to ensure the efficiency and stability of the insulation layer production.

[0021] Furthermore, S2 includes the following specific steps: Accelerate curing in an oven at 50-90℃ for 3-6 hours, and then let stand at room temperature at 20-25℃ for 12-36 hours to allow the adhesive to fully cross-link.

[0022] The advantages of adopting the above-mentioned further solutions are that the method is simple and the design is reasonable. The above-mentioned curing and maintenance treatment method can make the adhesive completely cross-linked, ensuring the stability of the entire composite insulation board and avoiding delamination.

[0023] Furthermore, S3 includes the following specific steps: The semi-finished insulation board is stamped and formed using high-pressure equipment, so that the four sides of the semi-finished insulation board are folded to form aerogel hook-shaped grooves with a width of (3-7) mm.

[0024] The advantages of adopting the above-mentioned further solution are that the method is simple and the design is reasonable. High pressure equipment is used to stamp and form the semi-finished insulation board, which further ensures the stability of the composite insulation board manufacturing and avoids delamination. In addition, high-pressure equipment is used to fold the four sides of the semi-finished insulation board to form aerogel hook-shaped grooves for subsequent installation of composite insulation boards.

[0025] Furthermore, after S3, it also includes, S4: Adjust the dimensions of the insulation board in S3; S5: Apply weather-resistant sealant to the folded edges of the insulation board in S4 to improve the waterproofness of the joints and obtain the finished insulation board.

[0026] The advantages of adopting the above-mentioned further solution are that the method is simple and the design is reasonable. By adjusting the size of the insulation board and applying weather-resistant sealant to the folded edges of the insulation board, the waterproofness of the joints is improved, and the finished insulation board is obtained, ensuring the quality of the insulation board processing. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the metal-faced nano-aerogel composite insulation panel in this invention; Figure 2 This is a schematic diagram of the joint structure between the two composite insulation boards in this invention; Figure 3 This is a schematic diagram of the structure of applying sealant to the barbed groove between two composite insulation boards in this invention; Figure 4 This is a process flow diagram of the first manufacturing embodiment of the composite insulation board in this invention; Figure 5 This is a process flow diagram of the second manufacturing embodiment of the composite insulation board in this invention; Figure 6 This is a process flow diagram of the third manufacturing embodiment of the composite insulation board in this invention.

[0028] The attached diagram lists the components represented by each number as follows: 1. Insulation layer; 2. Filling layer; 3. Protective layer; 4. Weather-resistant sealant; 5. Joint groove; 6. Joint protrusion. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0032] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0033] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0034] Example 1 like Figures 1 to 3 As shown, this embodiment provides a metal-faced nano-aerogel composite insulation panel, including: an insulation layer 1, two filling layers 2 and two protective layers 3. The two filling layers 2 are installed opposite each other on both sides of the insulation layer 1, and the two protective layers 3 are installed opposite each other on the side of the two filling layers 2 that are far apart from each other.

[0035] During use, insulation layer 1 is used for heat preservation, while filling layer 2 is used to increase the hardness of insulation layer 1 to prevent deformation. Filling layer 2 also has heat insulation and waterproof properties. In addition, two protective layers 3 are used to protect insulation layer 1 and two filling layers 2, extending their service life and reducing costs.

[0036] Preferably, in this embodiment, the dimensions of the aforementioned metal-faced nano-aerogel composite insulation board are 3000mm × 1100mm × 65mm (length × width × thickness). The board needs to be transported to the site before construction, and the board must be checked to ensure it meets the design requirements before construction; stainless steel hangers + angle steel beams, hanger diameter ≥ Φ14, aerogel coating air barrier material, etc. In addition, each nano-aerogel composite insulation panel weighs 45.03 kg, which translates to a gravitational force G of 450.3 N.

[0037] In this embodiment, to achieve the same thermal insulation effect, the traditional insulation layer uses a 150mm thick polyurethane insulation layer, and the actual measured density of polyurethane on site is 73KG / m³. 3 If converted to a 3000*1100 mm panel, the weight is 62.04 kg. In comparison, the nano-aerogel composite insulation panel provided in this embodiment has the advantages of being lightweight and having high strength. Specific comparison results are shown in Table 1 below: Table 1 Comparison of Nano-Aerogel Composite Insulation Board and Traditional Polyurethane Insulation Layer

[0038] This embodiment provides a composite insulation board with high thermal insulation effect and tensile bonding strength. Its manufacturing method is simple, realizing the industrial production and assembly installation of metal-faced aerogel composite insulation board, which can significantly reduce labor costs and safety risks in the process operation, and improve construction efficiency.

[0039] Example 2 Based on Example 1, in this example, the insulation layer 1 comprises multiple single layers stacked sequentially.

[0040] The solution has a simple structure and reasonable design. The insulation layer 1 is composed of multiple single layers, which makes construction convenient and provides better insulation effect.

[0041] Preferably, in this embodiment, the above-mentioned insulation layer 1 is preferably composed of three single layers stacked sequentially.

[0042] Alternatively, the single layer can be used in other suitable quantities, such as two or four layers.

[0043] Example 3 Based on Example 2, in this example, the single layer is a nano-aerogel layer with a thickness of (5-15) mm.

[0044] The solution has a simple structure, and it is reasonable to use a single layer of nano-aerogel. The nano-aerogel layer has heat insulation properties, is lightweight, and is easy to construct.

[0045] Preferably, in this embodiment, the single layer is a 10 mm thick nano-aerogel layer.

[0046] In addition, the above-mentioned single layer uses silica aerogel particles with a particle size of 2-5 mm (thermal conductivity ≤0.022 W / (m·K)), which are mixed with inorganic binder at a mass ratio of 8:1, and 0.5% penetrant (such as sodium dodecylbenzenesulfonate) is added to improve the dispersion uniformity.

[0047] Considering the significant impact of ambient humidity on insulation efficiency, it is recommended to increase the thickness by 10 mm to ensure better performance of the solution. Furthermore, taking into account the operating temperature of the cold storage and variations in ambient temperature, a further adjustment of 3 mm is made to ensure that the insulation efficiency remains normal even in extreme weather conditions. The final thickness of the metal-faced aerogel composite panel insulation layer is δ≈14.4mm + 10mm + 3mm≈27.4 (rounded up), ultimately determined to be δ=30mm.

[0048] The preferred material is a metal-faced aerogel composite insulation board, in which the aerogel is 30 mm thick, and a continuous and complete moisture-proof vapor barrier layer (aluminum foil film) is set on all six sides of the fiberglass aerogel composite insulation felt. 0.5 mm thick color steel plates are used, prefabricated with tongue and groove joints (tongue and groove connection). After installation, the joints interlock to form a physical barrier, greatly extending the heat conduction path.

[0049] Based on the above method, harmful substances in the aerogel felt insulation layer composed of three nano-aerogel layers can be detected. The detection results are shown in Table 2 below: Table 2. Detection results of harmful substances in aerogel felt insulation layer

[0050] Note: (1) 1 mg / kg = 1 ppm = 0.0001%; ​​(2) MDL = method detection limit; (3) ND = not detected. <MDL)。

[0051] As can be seen from Table 2 above, the results of the detection of harmful substances in the above-mentioned aerogel felt insulation layer comply with the relevant provisions of the EU ELV Directive (2000 / 53 / EC) and its subsequent revisions.

[0052] In addition, the formaldehyde content in the aerogel felt insulation layer composed of three nano-aerogel layers can be tested, and the test results are shown in Table 3 below: Table 3. Detection results of aldehyde content in aerogel felt insulation layer

[0053] As can be seen from the above, the formaldehyde content in the aerogel felt insulation layer composed of the three nano-aerogel layers meets the relevant requirements.

[0054] Example 4 Based on the above embodiments, in this embodiment, the two filling layers 2 are polystyrene foam boards with a thickness of (10-20) mm.

[0055] The structure of this solution is simple. Using polystyrene foam board for the filling layer 2 is a reasonable choice. Polystyrene foam board has excellent thermal insulation performance, as well as moisture and water resistance. In addition, polystyrene foam board has high compressive strength, will not deform, is lightweight, and is easy to construct.

[0056] Preferably, in this embodiment, the filling layer 2 is made of 40g / m² density polystyrene foam board, which is CNC cut into a standard size of 15mm thickness, and the surface is coated with an interface agent (silane coupling agent KH-550) to enhance the bonding performance.

[0057] In addition, the two polystyrene foam boards are glued to both sides of the insulation layer 1 to improve the overall bending strength. Moreover, the two polystyrene foam boards are prefabricated, which makes them easy to install and greatly improves construction efficiency.

[0058] Based on the above method, the performance of polystyrene foam board can be tested, and the test results are shown in Table 4 below: Table 4 Performance testing of polystyrene foam boards

[0059] As can be seen from the test results in Table 4 above, the combustion performance of the polystyrene foam board involved in this embodiment meets the requirements of Class B1 standard in GB 8624-2012.

[0060] Example 5 Based on the above embodiments, in this embodiment, the two protective layers 3 are galvanized steel plates with a thickness of (0.3-0.8) mm.

[0061] The scheme has a simple structure, and it is reasonable to use galvanized steel sheet for protective layer 3. Galvanized steel sheet has excellent corrosion resistance, excellent paintability and decorative properties, as well as good processability and can be subjected to complex processing such as bending, stamping and welding, making it easy to process.

[0062] Preferably, in this embodiment, each of the above-mentioned protective layers 3 is preferably made of 0.5mm thick galvanized steel sheet.

[0063] In addition, the surface of the above-mentioned galvanized steel sheet is sprayed with white environmentally friendly waterproof paint (water-based acrylic resin system, VOC≤50g / L).

[0064] Furthermore, the galvanized steel sheet is bonded to the filler layer 2 with adhesive and then placed on a machine tool for press fitting.

[0065] The performance of the internal insulation system of the metal-faced nano-aerogel composite insulation panel for cold storage should meet the requirements of Table 5 below: Table 5 Performance Requirements for Internal Insulation Systems Using Metal-Faced Nano-Aerogel Composite Insulation Panels in Cold Storage

[0066] According to the contents of Table 5 above, the test results of the composite insulation board produced in this embodiment meet the relevant design performance indicators.

[0067] Example 6 Based on the above embodiments, such as Figures 4 to 6 As shown, this embodiment also provides a method for manufacturing the metal-faced nano-aerogel composite insulation board as described above, including the following specific steps: S1: Install two filling layers 2 on both sides of the protective layer 3, and then install two protective layers 3 on the side of the two filling layers 2 that are far apart from each other to obtain a semi-finished insulation board; Alternatively, one of the filling layers 2 and one of the protective layers 3 are sequentially installed on one side of the insulation layer 1, and the other filling layer 2 and the other protective layer 3 are sequentially installed on the other side of the insulation layer 1 to obtain a semi-finished insulation board; Alternatively, one of the protective layers 3, one of the filling layers 2, the insulation layer 1, the filling layer 2 on the other side and the other protective layer 3 can be stacked and installed in sequence to obtain a semi-finished insulation board; S2: The semi-finished insulation board is cured and maintained. S3: The semi-finished insulation board is formed by high-pressure stamping.

[0068] This embodiment provides a method for manufacturing a metal-faced nano-aerogel composite insulation panel. This method is simple and can realize the industrial production and assembly installation of the metal-faced aerogel composite insulation panel. It can significantly reduce labor costs and safety risks in the process, and improve construction efficiency.

[0069] Based on the above scheme, the specific steps of the three processing schemes involved in S1 are as follows: Option 1: Install two filler layers 2 on both sides of the protective layer 3, and then install the two protective layers 3 on the side of the two filler layers 2 that are far apart from each other to obtain a semi-finished insulation board. The specific steps are as follows: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. In addition, the aerogel insulation layer also needs to be reinforced by stitching. The specific steps are as follows: the aerogel insulation layer (3 layers of nano aerogel felt are firmly bonded) adopts the plum blossom-shaped non-perforated stitching method. The 3 layers of nano aerogel insulation material are locked by special stitching equipment. The stitches are made of square yarn with a spacing of 200mm. After stitching, a special adhesive is applied around the stitches.

[0070] Then, the two filling layers 2 are glued to both sides of the insulation layer 1, and the two protective layers 3 are glued to the side of the two filling layers 2 that is far away from each other. The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0071] Option 2: Install one of the filling layers 2 and one of the protective layers 3 sequentially on one side of the insulation layer 1, and install the other filling layer 2 and the other protective layer 3 sequentially on the other side of the insulation layer 1 to obtain a semi-finished insulation board. The specific steps are as follows: One protective layer 3 → one filling layer 2 → nano aerogel insulation layer (3 layers) → another filling layer 2 → another protective layer 3.

[0072] The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0073] After one of the filler layers 2 is glued onto one of the protective layers 3, and after standing for 24 hours, three layers of nano-aerogel insulation layer are brushed on in sequence, and finally another filler layer 2 and another protective layer 3 are glued on.

[0074] Option 3: Stack one protective layer 3, one filling layer 2, insulation layer 1, the filling layer 2 on the other side, and the other protective layer 3 in sequence to obtain a semi-finished insulation board. The specific steps are as follows: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, glue the filling layer 2 and protective layer 3 on one side of the insulation layer 1 in sequence, let it stand for 24 hours, and then glue the filling layer 2 and protective layer 3 on the other side of the insulation layer 1 in sequence, and let it stand for 24 hours.

[0075] The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0076] Example 7 Based on Example 6, in this example, in S1, the insulation layer 1 comprises multiple single layers with a thickness of (5-15) mm, and adjacent single layers are bonded together with adhesive and then left to stand for (12-36) hours.

[0077] This method is simple and reasonably designed. Adjacent single layers are bonded together with adhesive and then left to stand for (12-36) hours to ensure the efficiency and stability of the insulation layer 1.

[0078] Preferably, in this embodiment, the insulation layer 1 comprises multiple 10mm thick single layers, and adjacent single layers are bonded together with an adhesive and then left to stand for 24 hours.

[0079] Example 8 Based on any one of Embodiments 6 to 7, in this embodiment, S2 includes the following specific steps: Accelerate curing in an oven at 50-90℃ for 3-6 hours, and then let stand at room temperature at 20-25℃ for 12-36 hours to allow the adhesive to fully cross-link.

[0080] This method is simple and reasonably designed. The above curing and maintenance treatment can make the adhesive completely cross-linked, ensuring the stability of the entire composite insulation board and avoiding delamination.

[0081] Preferably, in this embodiment, step S2 includes the following specific steps: accelerated curing in a 70°C oven for 4 hours, followed by standing at 23°C for 24 hours to allow the adhesive to fully crosslink.

[0082] Example 9 Based on any one of Embodiments 6 to 8, in this embodiment, S3 includes the following specific steps: The semi-finished insulation board is stamped and formed using high-pressure equipment, so that the four sides of the semi-finished insulation board are folded to form aerogel hook-shaped grooves with a width of (3-7) mm.

[0083] This method is simple and reasonably designed. It uses high-pressure equipment to stamp and form semi-finished insulation boards, which further ensures the stability of composite insulation board manufacturing and avoids delamination. In addition, high-pressure equipment is used to fold the four sides of the semi-finished insulation board to form aerogel hook-shaped grooves for subsequent installation of composite insulation boards.

[0084] Preferably, in this embodiment, step S3 includes the following specific steps: using high-pressure equipment to stamp the semi-finished insulation board to form a 5mm wide spliced ​​aerogel hook-shaped groove on the four sides of the semi-finished insulation board.

[0085] In addition, on any two opposite sides of each finished insulation panel, one side has a splicing groove 5 and the other side has a splicing protrusion 6. During assembly, the splicing groove 5 on one side of one of the two adjacent insulation panels engages with the splicing protrusion 6 on the other side of the other insulation panel, and the splicing protrusion 6 on the other side of one insulation panel engages with the splicing groove 5 on one side of the other insulation panel, thus realizing the installation of the insulation panels.

[0086] Example 10 Based on any one of Embodiments 6 to 9, in this embodiment, after S3, the following is also included: S4: Adjust the dimensions of the insulation board in S3; S5: Apply weather-resistant sealant 4 to the folded edges of the insulation board in S4 to improve the waterproofness of the joints and obtain the finished insulation board.

[0087] This method is simple and reasonably designed. By adjusting the size of the insulation board and applying weather-resistant sealant 4 to the folded edges of the insulation board, the waterproofness of the joints is improved, resulting in a finished insulation board and ensuring the quality of the insulation board processing.

[0088] Preferably, in this embodiment, in step S4, the four sides of the insulation board are milled to 3000×1100mm using a CNC machine tool with a tolerance of ±1mm, and the edges are chamfered with an R5mm to prevent burrs. Preferably, in this embodiment, the weather-resistant sealant in S5 is preferably silicone-based.

[0089] This invention provides a metal-faced nano-aerogel composite insulation panel and its manufacturing method, comprising the following specific steps: S1: Install two filler layers 2 on both sides of the protective layer 3, and then install the two protective layers 3 on the side of the two filler layers 2 that are far apart from each other to obtain a semi-finished insulation board, specifically: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. In addition, the aerogel insulation layer also needs to be reinforced by stitching. The specific steps are as follows: the aerogel insulation layer (3 layers of nano aerogel felt are firmly bonded) adopts the plum blossom-shaped hole-free stitching method. The 3 layers of nano aerogel insulation material are locked by special stitching equipment. The stitching thread is square yarn with a spacing of 200mm. After stitching, a special adhesive is applied around the stitching thread. Then, the two filling layers 2 are glued to both sides of the insulation layer 1, and the two protective layers 3 are glued to the side of the two filling layers 2 that is far away from each other.

[0090] Alternatively, one of the filling layers 2 and one of the protective layers 3 are sequentially installed on one side of the insulation layer 1, and the other filling layer 2 and the other protective layer 3 are sequentially installed on the other side of the insulation layer 1 to obtain a semi-finished insulation board, specifically: One protective layer 3 → one filling layer 2 → nano aerogel insulation layer (3 layers) → another filling layer 2 → another protective layer 3; The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0091] Alternatively, one of the protective layers 3, one of the filling layers 2, the insulation layer 1, the filling layer 2 on the other side, and the other protective layer 3 can be stacked sequentially to obtain a semi-finished insulation board, specifically as follows: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, glue the filling layer 2 and protective layer 3 on one side of the insulation layer 1 in sequence, let it stand for 24 hours, and then glue the filling layer 2 and protective layer 3 on the other side of the insulation layer 1 in sequence, and let it stand for 24 hours.

[0092] The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0093] S2: The semi-finished insulation board is cured and maintained. S3: The semi-finished insulation board is formed by high-pressure stamping; S4: Adjust the dimensions of the insulation board in S3; S5: Apply weather-resistant sealant to the folded edges of the insulation board in S4 to improve the waterproofness of the joints and obtain the finished insulation board.

[0094] This invention provides a metal-faced nano-aerogel composite insulation board as described above and its manufacturing method. The manufacturing method is simple and can realize the industrial production and assembly installation of the metal-faced aerogel composite insulation board, which can significantly reduce labor costs and safety risks in the process operation, and improve construction efficiency.

[0095] This invention provides a metal-faced nano-aerogel composite insulation panel and its manufacturing method, the specific embodiments of which are as follows: (1) First implementation method: S1: Install two filler layers 2 on both sides of the protective layer 3, and then install the two protective layers 3 on the side of the two filler layers 2 that are far apart from each other to obtain a semi-finished insulation board, specifically: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, the two filling layers 2 are glued to both sides of the insulation layer 1, and the two protective layers 3 are glued to the side of the two filling layers 2 that is far away from each other.

[0096] Alternatively, one of the filling layers 2 and one of the protective layers 3 are sequentially installed on one side of the insulation layer 1, and the other filling layer 2 and the other protective layer 3 are sequentially installed on the other side of the insulation layer 1 to obtain a semi-finished insulation board, specifically: One protective layer 3 → one filling layer 2 → nano aerogel insulation layer (3 layers) → another filling layer 2 → another protective layer 3; The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0097] Alternatively, one of the protective layers 3, one of the filling layers 2, the insulation layer 1, the filling layer 2 on the other side, and the other protective layer 3 can be stacked sequentially to obtain a semi-finished insulation board, specifically as follows: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, glue the filling layer 2 and protective layer 3 on one side of the insulation layer 1 in sequence, let it stand for 24 hours, and then glue the filling layer 2 and protective layer 3 on the other side of the insulation layer 1 in sequence, and let it stand for 24 hours.

[0098] The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0099] S2: Accelerate curing in a 50℃ oven for 3 hours, then let stand at 20℃ for 12 hours to allow the adhesive to fully cross-link; S3: The semi-finished insulation board is stamped and formed using high-pressure equipment, so that the four sides of the semi-finished insulation board are folded to form a 3mm wide spliced ​​aerogel hook groove. S4: Use a CNC machine tool to mill the four sides of the insulation board to 3000×1100mm, with a tolerance of ±1mm, and chamfer the edges with R5mm to prevent burrs; S5: Apply weather-resistant sealant to the folded edges of the insulation board in S4 to improve the waterproofness of the joints and obtain the finished insulation board.

[0100] (2) Second implementation method: S1: Install two filler layers 2 on both sides of the protective layer 3, and then install the two protective layers 3 on the side of the two filler layers 2 that are far apart from each other to obtain a semi-finished insulation board, specifically: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, the two filling layers 2 are glued to both sides of the insulation layer 1, and the two protective layers 3 are glued to the side of the two filling layers 2 that is far away from each other.

[0101] Alternatively, one of the filling layers 2 and one of the protective layers 3 are sequentially installed on one side of the insulation layer 1, and the other filling layer 2 and the other protective layer 3 are sequentially installed on the other side of the insulation layer 1 to obtain a semi-finished insulation board, specifically: One protective layer 3 → one filling layer 2 → nano aerogel insulation layer (3 layers) → another filling layer 2 → another protective layer 3; The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0102] Alternatively, one of the protective layers 3, one of the filling layers 2, the insulation layer 1, the filling layer 2 on the other side, and the other protective layer 3 can be stacked sequentially to obtain a semi-finished insulation board, specifically as follows: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, glue the filling layer 2 and protective layer 3 on one side of the insulation layer 1 in sequence, let it stand for 24 hours, and then glue the filling layer 2 and protective layer 3 on the other side of the insulation layer 1 in sequence, and let it stand for 24 hours.

[0103] The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0104] S2: Accelerate curing in a 70℃ oven for 4 hours, then let stand at 23℃ for 24 hours to allow the adhesive to fully cross-link; S3: The semi-finished insulation board is stamped and formed using high-pressure equipment, so that the four sides of the semi-finished insulation board are folded to form a 5mm wide spliced ​​aerogel hook groove. S4: Use a CNC machine tool to mill the four sides of the insulation board to 3000×1100mm, with a tolerance of ±1mm, and chamfer the edges with R5mm to prevent burrs; S5: Apply weather-resistant sealant to the folded edges of the insulation board in S4 to improve the waterproofness of the joints and obtain the finished insulation board.

[0105] (3) The third implementation method: S1: Install two filler layers 2 on both sides of the protective layer 3, and then install the two protective layers 3 on the side of the two filler layers 2 that are far apart from each other to obtain a semi-finished insulation board, specifically: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, the two filling layers 2 are glued to both sides of the insulation layer 1, and the two protective layers 3 are glued to the side of the two filling layers 2 that is far away from each other.

[0106] Alternatively, one of the filling layers 2 and one of the protective layers 3 are sequentially installed on one side of the insulation layer 1, and the other filling layer 2 and the other protective layer 3 are sequentially installed on the other side of the insulation layer 1 to obtain a semi-finished insulation board, specifically: One protective layer 3 → one filling layer 2 → nano aerogel insulation layer (3 layers) → another filling layer 2 → another protective layer 3; The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0107] Alternatively, one of the protective layers 3, one of the filling layers 2, the insulation layer 1, the filling layer 2 on the other side, and the other protective layer 3 can be stacked sequentially to obtain a semi-finished insulation board, specifically as follows: First, apply three coats of two-component polyurethane structural adhesive (A:B=1:1) to each layer of the qualified aerogel insulation layer to ensure strong adhesion. After the initial bond strength is ≥1.5MPa and the shear strength after curing is ≥18MPa, let it stand for 24 hours to obtain insulation layer 1. Then, glue the filling layer 2 and protective layer 3 on one side of the insulation layer 1 in sequence, let it stand for 24 hours, and then glue the filling layer 2 and protective layer 3 on the other side of the insulation layer 1 in sequence, and let it stand for 24 hours.

[0108] The adhesive layer between the insulation layer 1 and the filling layer 2, and between the filling layer 2 and the protective layer 3, has a full coverage thickness of 1.5mm, a strip width of 3mm, and a spacing of 200mm.

[0109] S2: Accelerate curing in a 90℃ oven for 6 hours, then let stand at 25℃ for 36 hours to allow the adhesive to fully cross-link; S3: The semi-finished insulation board is stamped and formed using high-pressure equipment, so that the four sides of the semi-finished insulation board are folded to form a 7mm wide spliced ​​aerogel hook groove. S4: Use a CNC machine tool to mill the four sides of the insulation board to 3000×1100mm, with a tolerance of ±1mm, and chamfer the edges with R5mm to prevent burrs; S5: Apply weather-resistant sealant to the folded edges of the insulation board in S4 to improve the waterproofness of the joints and obtain the finished insulation board.

[0110] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of the invention is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A metal-faced nano-aerogel composite insulation board, characterized in that, include: The insulation layer (1), two filling layers (2) and two protective layers (3) are installed opposite each other on both sides of the insulation layer (1), and the two protective layers (3) are installed opposite each other on the side away from each other of the two filling layers (2).

2. The metal-faced nano-aerogel composite insulation board according to claim 1, characterized in that, The insulation layer (1) comprises multiple single layers stacked sequentially.

3. The metal-faced nano-aerogel composite insulation board according to claim 2, characterized in that, The single layer is a nano-aerogel layer with a thickness of (5-15) mm.

4. The metal-faced nano-aerogel composite insulation board according to any one of claims 1-3, characterized in that, The two filling layers (2) are polystyrene foam boards with a thickness of (10-20) mm.

5. The metal-faced nano-aerogel composite insulation board according to any one of claims 1-3, characterized in that, The two protective layers (3) are galvanized steel plates with a thickness of (0.3-0.8) mm.

6. A method for manufacturing a metal-faced nano-aerogel composite insulation panel as described in any one of claims 1-5, characterized in that, The specific steps include the following: S1: Install two filling layers (2) on both sides of the protective layer (3), and then install the two protective layers (3) on the side away from each other of the two filling layers (2) to obtain a semi-finished insulation board; Alternatively, one of the filling layers (2) and one of the protective layers (3) are installed sequentially on one side of the insulation layer (1), and another of the filling layers (2) and another of the protective layers (3) are installed sequentially on the other side of the insulation layer (1) to obtain a semi-finished insulation board; Alternatively, one of the protective layers (3), one of the filling layers (2), the insulation layer (1), the filling layer (2) on the other side, and the other protective layer (3) can be stacked in sequence to obtain a semi-finished insulation board; S2: The semi-finished insulation board is cured and maintained. S3: The semi-finished insulation board is formed by high-pressure stamping.

7. The method for manufacturing the metal-faced nano-aerogel composite insulation panel according to claim 6, characterized in that, In S1, the insulation layer (1) comprises multiple single layers with a thickness of (5-15) mm, and adjacent single layers are bonded together with an adhesive and then left to stand for (12-36) hours.

8. The method for manufacturing the metal-faced nano-aerogel composite insulation board according to claim 6, characterized in that, S2 includes the following specific steps: Accelerate curing in an oven at 50-90℃ for 3-6 hours, and then let stand at room temperature at 20-25℃ for 12-36 hours to allow the adhesive to fully cross-link.

9. The method for manufacturing the metal-faced nano-aerogel composite insulation panel according to claim 6, characterized in that, S3 includes the following specific steps: The semi-finished insulation board is stamped and formed using high-pressure equipment, so that the four sides of the semi-finished insulation board are folded to form aerogel hook-shaped grooves with a width of (3-7) mm.

10. The method for manufacturing the metal-faced nano-aerogel composite insulation panel according to claim 6, characterized in that, Following S3, the following also includes: S4: Adjust the dimensions of the insulation board in S3; S5: Apply weather-resistant sealant (4) to the folded edges of the insulation board in S4 to improve the waterproofness of the joints and obtain the finished insulation board.

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