Aerogel glass fiber felt heat preservation and decoration integrated plate and preparation method thereof

Abstract

The invention discloses an aerogel glass fiber felt heat preservation and decoration integrated board and a preparation method thereof.The preparation method comprises the steps that an aerogel glass fiber original felt is subjected to quilting treatment, and a vertical wire reinforced aerogel glass fiber felt heat preservation core material is obtained; mixing the carbonized raw material, the hydrated raw material, redispersible latex powder and glass fiber to prepare an inorganic gel dry material; mixing and stirring the inorganic gelling dry material and water to prepare inorganic gelling slurry; the two large faces of the obtained heat preservation core material are soaked in inorganic gelling slurry, standing is carried out till the preset curing degree is reached, and then demolding is carried out; and performing carbonization curing on the impregnated heat-insulating core material to obtain the aerogel glass fiber felt heat-insulating plate. The surface of the aerogel glass fiber felt insulation board is sequentially coated with seal primer, a decorative layer and transparent finish paint, and the insulation and decoration integrated board is obtained. The aerogel glass fiber felt heat preservation and decoration integrated board is low-carbon and environment-friendly in production process, high in fireproof grade, low in water absorption rate and suitable for heat preservation and decoration of an external heat preservation system of an external wall.

Description

Technical Field

[0001] This invention belongs to the field of production technology of insulation boards for external wall insulation, specifically relating to an aerogel fiberglass felt insulation and decoration integrated board and its preparation method. Background Technology

[0002] Traditional exterior wall insulation and decorative integrated panels primarily use three types of insulation core materials: organic insulation core materials, represented by polystyrene boards and polyurethane boards; inorganic insulation core materials, represented by rock wool boards; and organic + inorganic composite insulation core materials, represented by polystyrene boards modified with inorganic flame-retardant modifiers such as graphite. Organic insulation core materials, represented by EPS and XPS, offer excellent insulation performance and are widely used in exterior wall insulation systems. However, their insulation performance is easily reduced and their fire resistance is poor due to factors such as high temperatures and sunlight, limiting their application range. Inorganic insulation core materials, represented by rock wool, while offering excellent insulation performance and being inherently fire-resistant, are prone to moisture absorption and expansion during the service life of the exterior wall cladding, increasing the risk of detachment.

[0003] Aerogel fiberglass mat boasts multiple advantages, including low thermal conductivity, waterproofing, and fire resistance, perfectly meeting the demand for high-performance, multifunctional materials in external wall insulation. However, aerogel fiberglass mat generally suffers from low tensile bond strength, severely limiting its reliability in engineering applications. When used in scenarios requiring tensile stress, this low tensile bond strength can easily lead to interlayer delamination, localized cracking, or even complete detachment, not only compromising the integrity of the insulation structure and reducing its thermal insulation effect but also potentially posing safety hazards. Therefore, overcoming this technical bottleneck is urgent. Furthermore, the tendency of aerogel fiberglass mat to shed powder further limits its application scope.

[0004] Chinese patent CN219753742U discloses an integrated waterproof and thermal insulation construction board. This board uses multiple layers of aerogel felt, less than 1 cm thick, layered using a quilting method to improve insulation. The product is used on roofs and is applied in a flat-lay configuration. However, the bonding strength between the different layers of felt in this integrated construction board is limited, making it unsuitable for external wall insulation systems with strict requirements for tensile bond strength. If the application method is changed from flat-lay to vertical, the different layers of aerogel felt are prone to slippage. Furthermore, aerogel fiberglass felt is prone to dusting, polluting the environment and reducing the product's insulation performance. Therefore, this process is not suitable for external wall insulation systems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated aerogel fiberglass felt insulation and decoration panel and its preparation method. This integrated aerogel fiberglass felt insulation and decoration panel exhibits excellent thermal insulation performance, low water absorption, non-combustibility, high tensile bonding strength, and no powder shedding from the felt layer, making it suitable for industrial production.

[0006] The technical solution provided by this invention is as follows:

[0007] This invention provides a method for preparing an integrated thermal insulation and decorative panel made of aerogel fiberglass felt, the method comprising the following steps: By quilting the aerogel fiberglass felt, a vertically reinforced aerogel fiberglass felt insulation core material is obtained. Carbonized raw materials, hydrated raw materials, redispersible latex powder and glass fiber are mixed to prepare inorganic gel dry material; The inorganic gelling dry material is mixed with water and stirred to obtain inorganic gelling slurry. The two large surfaces of the obtained thermal insulation core material are respectively immersed in inorganic cementitious slurry and left to stand until the predetermined curing degree before demolding. Carbonization curing is performed on the impregnated insulation core material to obtain aerogel fiberglass felt insulation board; A sealing primer, a decorative layer, and a transparent topcoat are sequentially coated on the surface of the aerogel fiberglass felt insulation board to obtain the integrated insulation and decoration board.

[0008] Furthermore, the thickness of the aerogel fiberglass felt is 25~35mm; in the quilting process, the quilting thread is selected from one or more of polyimide fiber, aramid fiber, and polyphenylene sulfide fiber, with a double twist of 500~700 twists / m and a linear density of 25~30tex; after quilting, the outer edges of the two large surfaces of the insulation core material form a rectangular quilting grid with a length of 10~15mm × width of 10~15mm, and the interior forms a rectangular quilting grid with a length of 20~40mm × width of 20~40mm.

[0009] Furthermore, by weight, the carbonization raw material comprises 50-75 parts, the hydration raw material comprises 15-20 parts, the redispersible latex powder comprises 0.5-5.0 parts, and the glass fiber comprises 0.3-1.0 parts.

[0010] Furthermore, in the inorganic cementitious slurry, the weight ratio of inorganic cementitious dry material to water is 85~95:25~35.

[0011] Furthermore, the impregnation method is as follows: the large surface of the thermal insulation core material is placed in a mold containing inorganic cementitious slurry in a leveled state and left to stand until the hydration degree of the hydrated raw materials in the slurry is greater than 80%, and then the material is demolded, controlling the thickness of the slurry layer to be 2~4mm.

[0012] Furthermore, the carbonization raw material has a specific surface area of ​​300~500m². 2 The low-carbon cement clinker powder per kg contains 20-30% γC2S (2CaO·SiO2) by weight, 10-20% C3S2 (3CaO·2SiO2) by weight, and 15-25% CS (CaO·SiO2) by weight.

[0013] Furthermore, the hydration raw materials are selected from one or more of the following: silicate cement with a strength grade ≥42.5, ordinary silicate cement, slag silicate cement, pozzolanic silicate cement, and fly ash silicate cement.

[0014] Furthermore, the minimum film-forming temperature of the redispersible latex powder is 0~10℃, and the glass transition temperature is 15~20℃.

[0015] Furthermore, the glass fiber has a diameter of 10~15μm and a length of 5~10mm.

[0016] Furthermore, the carbonization curing conditions are as follows: carbonization at normal pressure for 4-8 hours under conditions of temperature 25-80℃, CO2 concentration 15-100%, and relative humidity 40-90%; or, carbonization under pressure for 1-4 hours under conditions of temperature 25-80℃, CO2 concentration 5-100%, relative humidity 40-90%, and pressure 0.2-1.0MPa.

[0017] Preferably, the carbonization curing conditions are: carbonization at normal pressure for 4-6 hours at a temperature of 35-60℃, a CO2 concentration of 60-100%, and a relative humidity of 50-70%; or, carbonization under pressure for 1-2 hours at a temperature of 30-70℃, a CO2 concentration of 60-100%, a relative humidity of 50-70%, and a pressure of 0.2-0.8MPa.

[0018] Furthermore, the dry film thickness of the sealing primer is 30~40µm, the dry film thickness of the stone-like paint is 2~3mm, and the dry film thickness of the transparent topcoat is 40~60µm.

[0019] The present invention also provides an aerogel fiberglass felt thermal insulation and decorative integrated panel, which is prepared according to the method described above.

[0020] Beneficial effects

[0021] 1. The existing aerogel fiberglass felt on the market has low vertical pull-out strength and cannot be directly used in the external wall insulation system of the thermal insulation decorative panel. By adopting the quilting process of the present invention, vertical filaments are added to the original fiberglass felt, which significantly improves the pull-out performance of the fiberglass felt; and the design of the quilting pattern with a dense outer layer and a loose inner layer can prevent the powder in the aerogel fiberglass felt from falling off.

[0022] 2. In the production process of this invention, the surface smoothness of the vertically reinforced aerogel fiberglass felt insulation core material produced by the quilting process is slightly poor. By impregnating both sides with inorganic cementitious slurry and allowing it to stand before demolding, the smoothness of both sides of the fiberglass felt is greatly improved. Subsequent carbonization curing further enhances the tensile and compressive strength and weather resistance of both sides of the fiberglass felt through the carbonization reaction. The production process is low-carbon, environmentally friendly, and pollution-free.

[0023] 3. The aerogel fiberglass felt insulation and decoration integrated panel obtained by this invention is composed almost entirely of inorganic materials, resulting in excellent overall fire resistance. The aerogel fiberglass felt impregnated with inorganic cementitious mortar on both sides has a dense structure after carbonization curing. Combined with the hydrophobicity of the insulation core, the overall water absorption rate of the panel is low, which can effectively avoid the risk of insulation performance failure and detachment due to high water absorption rate after it is installed on the wall. Attached Figure Description

[0024] Figure 1 This is a top view of the vertical filament reinforced aerogel fiberglass felt insulation core material of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the aerogel fiberglass felt integrated insulation and decoration panel of the present invention. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments. The following embodiments are not intended to limit the present invention, but only to illustrate the present invention. Unless otherwise specified, the experimental methods used in the following embodiments are generally performed under conventional conditions. Unless otherwise specified, the materials and reagents used in the following embodiments are commercially available.

[0027] This invention provides a method for preparing an integrated thermal insulation and decorative panel made of aerogel fiberglass felt, the method comprising the following steps: By quilting the aerogel fiberglass felt, a vertically reinforced aerogel fiberglass felt insulation core material is obtained. Carbonized raw materials, hydrated raw materials, redispersible latex powder and glass fiber are mixed to prepare inorganic gel dry material; The inorganic gelling dry material is mixed with water and stirred to obtain inorganic gelling slurry. The two large surfaces of the obtained thermal insulation core material are respectively immersed in inorganic cementitious slurry and left to stand until the predetermined curing degree before demolding. Carbonization curing is performed on the impregnated insulation core material to obtain aerogel fiberglass felt insulation board; A sealing primer, a decorative layer, and a transparent topcoat are sequentially coated on the surface of the aerogel fiberglass felt insulation board to obtain the integrated insulation and decoration board.

[0028] In this embodiment, the thickness of the aerogel fiberglass felt is 25~35mm; in the quilting process, the quilting thread is selected from one or more of polyimide fiber, aramid fiber, and polyphenylene sulfide fiber, with a double twist of 500~700 twists / m and a linear density of 25~30tex; after quilting, the outer edges of the two large surfaces of the insulation core material form a rectangular quilting grid with a length of 10~15mm × width of 10~15mm, and the interior forms a rectangular quilting grid with a length of 20~40mm × width of 20~40mm.

[0029] In this embodiment, by weight, there are 50-75 parts of carbonization raw material, 15-20 parts of hydration raw material, 0.5-5.0 parts of redispersible latex powder, and 0.3-1.0 parts of glass fiber.

[0030] In this embodiment, the weight ratio of inorganic cementitious dry material to water in the inorganic cementitious slurry is 85~95:25~35.

[0031] In this embodiment, the impregnation method is as follows: the large surface of the thermal insulation core material is placed in a mold containing inorganic cementitious slurry in a leveled state and left to stand until the hydration degree of the hydrated raw materials in the slurry is greater than 80%, and then the material is demolded, controlling the thickness of the slurry layer to be 2~4mm.

[0032] In this embodiment, the carbonization raw material has a specific surface area of ​​300~500 m². 2 The low-carbon cement clinker powder per kg contains 20-30% γC2S (2CaO·SiO2) by weight, 10-20% C3S2 (3CaO·2SiO2) by weight, and 15-25% CS (CaO·SiO2) by weight.

[0033] In this embodiment, the hydration raw material is selected from one or more of the following: silicate cement with a strength grade ≥42.5, ordinary silicate cement, slag silicate cement, pozzolanic silicate cement, and fly ash silicate cement.

[0034] In this embodiment, the minimum film-forming temperature of the redispersible latex powder is 0~10℃, and the glass transition temperature is 15~20℃.

[0035] In this embodiment, the glass fiber has a diameter of 10~15μm and a length of 10mm.

[0036] In this embodiment, the carbonization curing conditions are as follows: carbonization at normal pressure for 4-8 hours under conditions of temperature 25-80℃, CO2 concentration 15-100%, and relative humidity 40-90%; or, carbonization under pressure for 1-4 hours under conditions of temperature 25-80℃, CO2 concentration 5-100%, relative humidity 40-90%, and pressure 0.2-1.0MPa.

[0037] Preferably, the carbonization curing conditions are: carbonization at normal pressure for 4-6 hours at a temperature of 35-60℃, a CO2 concentration of 60-100%, and a relative humidity of 50-70%; or, carbonization under pressure for 1-2 hours at a temperature of 30-70℃, a CO2 concentration of 60-100%, a relative humidity of 50-70%, and a pressure of 0.2-0.8MPa.

[0038] In this embodiment, the dry film thickness of the sealing primer is 30~40µm, the dry film thickness of the stone paint is 2~3mm, and the dry film thickness of the transparent topcoat is 40~60µm.

[0039] This invention also provides an aerogel fiberglass felt insulation and decorative integrated panel, which is prepared according to the method described above.

[0040] Specifically, in this embodiment, the aerogel fiberglass mat used was purchased from Langmiao Environmental Protection Technology (Tianjin) Co., Ltd., and is available in two thicknesses: 25mm and 30mm, with a bulk density of 120~150Kg / m³. 3 The polyimide fiber with a double twist of 500 twists / m and a linear density of 28 tex and the aramid fiber with a double twist of 500 twists / m and a linear density of 30 tex are both commercially available products. The mineral composition of the carbonization raw material is γC2S 28.9%, CS 15.2%, C3S2 13.2%, C3S 12.3%, calcite 10.1%, and quartz 7.8%. The carbonization raw material is obtained by compounding four kinds of calcium silicate mineral powders. The four kinds of calcium silicate mineral powders are analytical grade calcium carbonate and silicon dioxide, respectively, and are obtained by batching, wet grinding, drying, firing, and dry grinding according to their respective calcium-silicon ratios. The specific surface area of ​​the carbonization raw material is 450 m². 2 / Kg; PO42.5 silicate cement is a commercially available product; redispersible latex powder is a commercially available product with a minimum film-forming temperature of 0℃ and a glass transition temperature of 15℃; commercially available glass fibers with a diameter of 10μm and a length of 6mm are used; the water used to prepare the inorganic slurry is tap water from the Gedian Laboratory of China Construction Third Engineering Bureau; the sealing primer, real stone paint (decorative surface), and transparent topcoat are all commercially available products.

[0041] In this embodiment, the following equipment was used: the quilting process was performed using a custom sewing machine from Zhejiang Chuantian Sewing Machine Co., Ltd.; the preparation process of inorganic cementitious dry material and inorganic cementitious slurry was performed using a brick masonry compressive strength sample preparation mixer produced by Hebei Kexi Instrument Equipment Co., Ltd.; the mold containing the inorganic slurry was a custom stainless steel mold; the carbonization device used in the double-sided impregnation and insulation core material carbonization curing process was produced by Zhucheng Luguantong Machinery Technology Co., Ltd.; and the sealing primer, real stone paint, and transparent topcoat were applied using commercially available air sprayers, real stone paint sprayers, and airless sprayers, respectively.

[0042] The following describes in detail, with reference to embodiments, the preparation method of the aerogel fiberglass felt integrated insulation and decorative panel provided by the present invention (in conjunction with...). Figures 1-2 (and Tables 1-5), but they should not be construed as limiting the scope of protection of this invention.

[0043] Example 1

[0044] This invention provides a method for preparing an integrated aerogel fiberglass felt insulation and decorative panel, the specific steps of which are as follows: Step 1: A 25mm thick aerogel fiberglass felt is quilted using a quilting machine to obtain a vertically reinforced aerogel fiberglass felt insulation core material. The quilting thread used in the quilting process is double-stranded polyimide fiber with a twist of 500 twists / m and a linear density of 28tex. After quilting, the outer edges of the two large surfaces of the obtained insulation core material are quilted with rectangular quilting grids of 10mm long × 10mm wide, and the inner surfaces are quilted with rectangular quilting grids of 30mm long × 30mm wide. Step 2: According to the weight proportions, place 70 parts of carbonized raw materials, 20 parts of PO42.5 silicate cement, 1 part of redispersible latex powder, and 0.5 parts of glass fiber into a dry material mixing device, and mix thoroughly to obtain inorganic cementitious dry material; Step 3: According to the weight proportions, add 90 parts of the inorganic gelling dry material obtained in Step 2 and 29 parts of water to the mixing equipment, and after thorough mixing, obtain the inorganic gelling slurry. Step 4: Place one large side of the insulation core material obtained in Step 1 into a mold containing the inorganic cementitious slurry obtained in Step 3. The inorganic cementitious slurry in the mold is in a leveled state with a thickness of 3mm. Let it stand until the hydration degree of the hydrated raw materials in the inorganic cementitious slurry is greater than 80%. Demold to obtain the single-sided impregnated insulation core material. Step 5: Place the unimpregnated side of the single-sided impregnated insulation core material obtained in Step 4 into a mold containing the inorganic cementitious slurry obtained in Step 3. The inorganic cementitious slurry in the mold is in a leveled state with a thickness of 3mm. Let it stand until the hydration degree of the hydrated raw materials in the inorganic cementitious slurry is greater than 80%. Demold to obtain the double-sided impregnated insulation core material. Step 6: Place the double-sided impregnated insulation core material obtained in Step 5 into a carbonization device. The carbonization conditions are 45℃, CO2 concentration of 95%, relative humidity of 60%, and carbonization at normal pressure for 4 hours. After curing, the aerogel fiberglass felt insulation board is obtained. Step 7: Apply the sealing primer, real stone paint, and transparent topcoat sequentially to the aerogel fiberglass felt insulation board obtained in Step 6. The thicknesses after drying are 35μm, 2.5mm, and 50μm respectively, to obtain an integrated aerogel fiberglass felt insulation and decoration board.

[0045] The aerogel fiberglass felt insulation and decoration integrated panel obtained in this embodiment was tested in accordance with "JG / T 287-2013 Insulation and Decoration Panel External Wall Insulation System Materials". The specific test results are shown in Table 1.

[0046] Table 1 Performance of the aerogel fiberglass felt integrated insulation and decorative panel obtained in Example 1

[0047]

[0048] The double-sided impregnated insulation core material obtained in step five and the aerogel fiberglass felt insulation board obtained in step six of this embodiment are dried at 200°C until the weight change is less than 0.5%. The carbon fixation content of the integrated insulation and decorative panel is the difference between the dried mass of the sample obtained in step six and the dried mass of the sample obtained in step five. The carbon fixation content of the integrated insulation and decorative panel obtained in this embodiment is 0.82 kg / m³. 2 .

[0049] Example 2

[0050] This invention provides a method for preparing an integrated aerogel fiberglass felt insulation and decoration panel. The method differs from that in Example 1 in that step one is changed to "using a 30mm thick aerogel fiberglass felt as a quilting machine to obtain a vertically reinforced aerogel fiberglass felt insulation core material, wherein the thread used for quilting is double-strand aramid fiber with a twist of 500 twists / m and a linear density of 30tex; after quilting, the outer edges of the two large surfaces of the obtained insulation core material are quilted with rectangular quilting grids of 12mm in length and 12mm in width, and the interior is quilted with rectangular quilting grids of 35mm in length and 35mm in width".

[0051] The aerogel fiberglass felt insulation and decoration integrated panel obtained in this embodiment was tested in accordance with "JG / T 287-2013 Insulation and Decoration Panel External Wall Insulation System Materials". The specific test results are shown in Table 2.

[0052] Table 2 Performance of the Aerogel Fiberglass Felt Integrated Thermal Insulation and Decorative Panel Obtained in Example 2

[0053]

[0054] Following the carbon sequestration test method of Example 1, the carbon sequestration of the integrated thermal insulation and decorative panel obtained in this example was measured to be 0.81 kg / m³. 2 .

[0055] Example 3

[0056] This invention provides a method for preparing an integrated aerogel fiberglass felt insulation and decoration panel. The method differs from that in Example 1 in that step six is ​​changed to "placing the double-sided impregnated insulation core material obtained in step five in a carbonization device, with carbonization conditions of 45°C, CO2 concentration of 60%, relative humidity of 60%, and pressure of 0.4 MPa for 2 hours, and then curing to obtain the aerogel fiberglass felt insulation panel".

[0057] The aerogel fiberglass felt insulation and decoration integrated panel obtained in this embodiment was tested in accordance with "JG / T 287-2013 Insulation and Decoration Panel External Wall Insulation System Materials". The specific test results are shown in Table 3.

[0058] Table 3 Performance of the Aerogel Fiberglass Felt Integrated Thermal Insulation and Decorative Panel Obtained in Example 3

[0059]

[0060] Following the carbon sequestration test method of Example 1, the carbon sequestration of the integrated thermal insulation and decorative panel obtained in this example was measured to be 0.90 kg / m³. 2 .

[0061] Comparative Example 1

[0062] This comparative example provides a method for preparing an integrated aerogel fiberglass felt insulation and decoration panel, which differs from Example 1 in that step one is changed to "preparing a 25mm thick aerogel fiberglass felt"; step four is changed to "placing one large surface of the aerogel fiberglass felt from step one into a mold containing the inorganic cementitious slurry obtained in step three, wherein the inorganic cementitious slurry in the mold is in a leveled state and the slurry thickness is 3mm, allowing it to stand until the hydration degree of the hydration raw materials in the inorganic cementitious slurry is greater than 80%, and demolding to obtain a single-sided impregnated aerogel fiberglass felt"; step five is changed to "placing the aerogel fiberglass felt from step four into a single-sided impregnated aerogel fiberglass felt". The unimpregnated side of the single-sided impregnated aerogel fiberglass felt is placed in a mold containing the inorganic gelling slurry obtained in step three. The inorganic gelling slurry in the mold is in a level state with a thickness of 3 mm. It is left to stand until the hydration degree of the hydration raw materials in the inorganic gelling slurry is greater than 80%. The mold is then removed to obtain the double-sided impregnated aerogel fiberglass felt. Step six is ​​changed to "Place the double-sided impregnated aerogel fiberglass felt obtained in step five in a carbonization device. The carbonization conditions are 45°C, CO2 concentration 95%, relative humidity 60%, and atmospheric pressure carbonization for 4 hours. After curing, the aerogel fiberglass felt insulation board is obtained."

[0063] The aerogel fiberglass felt insulation and decoration integrated panel obtained in this comparative example was tested according to "JG / T 287-2013 Insulation and Decoration Panel for External Wall Insulation System Materials". The specific test results are shown in Table 4.

[0064] Table 4 Performance of Aerogel Fiberglass Felt Integrated Thermal Insulation and Decorative Panels Obtained in Comparative Examples

[0065]

[0066] Following the carbon sequestration test method in Example 1, the carbon sequestration of the integrated thermal insulation and decorative panel obtained in this comparative example was measured to be 0.84 kg / m³. 2 .

[0067] Comparative Example 2

[0068] This comparative example provides a method for preparing an integrated aerogel fiberglass felt insulation and decoration panel. The difference from Example 1 is that step two is changed to "by weight, 90 parts of carbonized raw material, 1 part of redispersible latex powder, and 0.5 parts of glass fiber are placed in a dry material mixing device and thoroughly stirred to obtain inorganic cementitious dry material"; step four is changed to "place one large side of the insulation core material obtained in step one into a mold containing the inorganic cementitious slurry obtained in step three, wherein the inorganic cementitious slurry in the mold is in a leveled state, the slurry thickness is 3 mm, and the settling time is the same as the settling time in step four of Example 1"; step five is changed to "place the other large side of the single-sided impregnated insulation core material obtained in step four that is not impregnated into a mold containing the inorganic cementitious slurry obtained in step three, wherein the inorganic cementitious slurry in the mold is in a leveled state, the slurry thickness is 3 mm, and the settling time is the same as the settling time in step five of Example 1".

[0069] In the implementation of this comparative example, after the two large surfaces of the aerogel fiberglass felt insulation core were impregnated and left to stand after steps four and five, the surface slurry fell off. After steps five, six, and seven, the appearance of the integrated insulation and decoration panel did not meet the technical requirements for product appearance in "JG / T 287-2013 Insulation and Decoration Panel for External Wall Insulation System Materials".

[0070] Comparative Example 3

[0071] This comparative example provides a method for preparing an integrated aerogel fiberglass felt insulation and decoration panel. The difference from Example 1 is that step six is ​​changed to "placing the double-sided impregnated insulation core material obtained in step five in a carbonization device, with carbonization conditions of 5°C, CO2 concentration of 5%, relative humidity of 10%, and carbonization at normal pressure for 4 hours, and obtaining the aerogel fiberglass felt insulation panel after curing".

[0072] The aerogel fiberglass felt insulation and decoration integrated panel obtained in this comparative example was tested according to "JG / T 287-2013 Insulation and Decoration Panel for External Wall Insulation System Materials". The specific test results are shown in Table 5.

[0073] Table 5 Performance of Aerogel Fiberglass Felt Integrated Thermal Insulation and Decorative Panels Obtained in Comparative Examples

[0074]

[0075] Following the carbon sequestration test method in Example 1, the carbon sequestration of the integrated thermal insulation and decorative panel obtained in this comparative example was measured to be 0.32 kg / m³. 2 .

[0076] As can be seen from Tables 1-5, the integrated thermal insulation and decorative panel obtained in this embodiment has advantages such as high tensile bonding strength, low water absorption, good thermal insulation performance, and fire resistance. It can be widely used in the exterior walls of high-rise buildings, renovation of old residential areas, and renovation of large public buildings, realizing the integration of thermal insulation, decoration, safety, and durability.

[0077] The specific embodiments of the present invention have been described in detail above, but the scope of the present invention is not limited to the above embodiments. For those skilled in the art, various adjustments, modifications, or substitutions can be made to the embodiments without departing from the core principles and spirit of the present invention, but these modifications still fall within the protection scope of the present invention.

Claims

1. A method for preparing an integrated thermal insulation and decorative panel using aerogel fiberglass felt, characterized in that, The method includes the following steps: By quilting the aerogel fiberglass felt, a vertically reinforced aerogel fiberglass felt insulation core material is obtained. Carbonized raw materials, hydrated raw materials, redispersible latex powder and glass fiber are mixed to prepare inorganic gel dry material; The inorganic gelling dry material is mixed with water and stirred to obtain inorganic gelling slurry. The two large surfaces of the obtained thermal insulation core material are respectively immersed in inorganic cementitious slurry and left to stand until the predetermined curing degree before demolding. Carbonization curing is performed on the impregnated insulation core material to obtain aerogel fiberglass felt insulation board; A sealing primer, a decorative layer, and a transparent topcoat are sequentially coated on the surface of the aerogel fiberglass felt insulation board to obtain the integrated insulation and decoration board.

2. The preparation method of the aerogel fiberglass felt integrated insulation and decorative panel according to claim 1, characterized in that, The thickness of the aerogel fiberglass felt is 25~35mm; in the quilting process, the quilting thread is selected from one or more of polyimide fiber, aramid fiber, and polyphenylene sulfide fiber, with a double twist of 500~700 twists / m and a linear density of 25~30tex; after quilting, the outer edges of the two large surfaces of the insulation core material form a rectangular quilting grid with a length of 10~15mm × width of 10~15mm, and the interior forms a rectangular quilting grid with a length of 20~40mm × width of 20~40mm.

3. The preparation method of the aerogel fiberglass felt integrated insulation and decorative panel according to claim 1, characterized in that, By weight, the carbonization raw material is 50-75 parts, the hydration raw material is 15-20 parts, the redispersible latex powder is 0.5-5.0 parts, and the glass fiber is 0.3-1.0 parts.

4. The preparation method of the aerogel fiberglass felt integrated insulation and decorative panel according to claim 1, characterized in that, In the inorganic cementitious slurry, the weight ratio of inorganic cementitious dry material to water is 85~95:25~35.

5. The method for preparing the aerogel fiberglass felt integrated insulation and decorative panel according to claim 1, characterized in that, The impregnation method is as follows: place the large surface of the thermal insulation core material in a mold containing inorganic cementitious slurry in a leveled state and let it stand until the hydration degree of the hydrated raw materials in the slurry is greater than 80% before demolding, and control the thickness of the slurry layer to be 2~4mm.

6. The method for preparing the aerogel fiberglass felt integrated insulation and decorative panel according to claim 3, characterized in that, The carbonization raw material has a specific surface area of ​​300~500 m². 2 The low-carbon cement clinker powder per kg contains 20-30% γC2S, 10-20% C3S2, and 15-25% CS by weight in its mineral composition.

7. The method for preparing the aerogel fiberglass felt integrated insulation and decorative panel according to claim 3, characterized in that, The hydration raw materials are selected from one or more of the following: silicate cement with a strength grade ≥42.5, ordinary silicate cement, slag silicate cement, pozzolanic silicate cement, and fly ash silicate cement.

8. The method for preparing the aerogel fiberglass felt integrated insulation and decorative panel according to claim 1, characterized in that, The carbonization curing conditions are as follows: carbonization at normal pressure for 4-8 hours at a temperature of 25-80℃, a CO2 concentration of 15-100%, and a relative humidity of 40-90%; or, carbonization under pressure for 1-4 hours at a temperature of 25-80℃, a CO2 concentration of 5-100%, a relative humidity of 40-90%, and a pressure of 0.2-1.0 MPa.

9. The method for preparing the aerogel fiberglass felt integrated insulation and decorative panel according to claim 1, characterized in that, The dry film thickness of the sealing primer is 30~40µm, the dry film thickness of the stone paint is 2~3mm, and the dry film thickness of the transparent topcoat is 40~60µm.

10. An integrated thermal insulation and decorative panel made of aerogel fiberglass felt, characterized in that, Prepared by the method according to any one of claims 1-9.

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