Modified aerogel felt thermal insulation composite board

Abstract

The utility model relates to indoor thermal insulation material field discloses a kind of modified aerogel felt thermal insulation composite board, including thermal insulation layer and panel, and it is provided with pull line between panel and thermal insulation layer, and pull line penetrates thermal insulation layer, and panel is mechanically anchored with thermal insulation layer, forms stable three-dimensional structure, significantly improves shear resistance and anti-stripping strength, overcomes the cementation failure problem caused by aerogel surface inertia.The surface of thermal insulation layer is formed into parallel hardening layer by cement paste infiltration, enhances integrity and reduces nanopore exposure.Suture structure further inhibits interlayer displacement and dust shedding.The board reduces dependence on organic adhesive, avoids VOCs release such as formaldehyde, and protects indoor air quality.When used for decoration, panel or hardening layer can be used as decorative surface and installed on wall, and the periphery is closed with gypsum or cement mortar, to prevent dust from escaping, with efficient thermal insulation, stable structure and environmental protection safety characteristics, suitable for green building field.

Description

Technical Field

[0001] This solution relates to the field of indoor thermal insulation materials, specifically a modified aerogel felt thermal insulation composite board. Background Technology

[0002] In the field of thermal insulation materials, aerogel felt is widely used in construction, industrial pipelines, and new energy sectors due to its excellent properties such as extremely low thermal conductivity, high porosity, and low density. However, certain challenges arise when using aerogel felt in interior building insulation projects. Because of the nanoscale pores and loose structure on the surface of aerogel felt, dust is easily generated and shed during use. This not only affects the stability of the material's insulation performance but also pollutes indoor air quality, potentially posing long-term risks to human respiratory health.

[0003] The current conventional solution is to use aerogel felt as a core material for encapsulation, wrapping it with packaging materials to prevent the aerogel from being exposed to air and thus avoiding dust shedding during use. However, because aerogel felt is a flexible material and dispersants such as silane coupling agents are added during its production, conventional cement mortar cannot effectively bond it. Consequently, the encapsulation process inevitably involves the use of a large amount of adhesive, and the formaldehyde contained in the adhesive raises safety concerns for subsequent use. Utility Model Content

[0004] The present invention aims to provide a modified aerogel felt insulation composite board to reduce the dependence on adhesives during aerogel coating and to improve the adhesion performance of conventional cement mortar to aerogel felt.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a modified aerogel felt insulation composite board, comprising an insulation layer and a panel, wherein a tie line is provided between the panel and the insulation layer, the tie line penetrates the insulation layer and fixes the insulation layer and the panel, and a hardened layer is provided on the side of the insulation layer away from the panel, which is formed by impregnating the surface of the insulation layer with adhesive and hardening it.

[0006] The beneficial effects of this solution are as follows: This solution significantly reduces the reliance on organic adhesives (such as urea-formaldehyde resin and acrylic glue) in traditional bonding processes, fundamentally avoiding the release of volatile organic compounds (VOCs) such as formaldehyde and benzene during material production, installation and long-term use, effectively ensuring indoor air quality and meeting the development needs of green building and healthy living environment. By using tie wires to three-dimensionally interlock and anchor the panel and aerogel insulation layer, a mechanical interlocking structure is formed. This not only avoids the bonding failure problem caused by the inertness of the aerogel surface (due to treatment with silane coupling agents, etc.), but also improves the shear and peel strength between the panel and the insulation layer, ensuring the structural integrity of the building materials during transportation, installation, and service. At the same time, the multi-layer aerogel insulation material is sewn together with stitching thread, which effectively restrains the relative displacement between material layers, compacts the loose surface structure, and reduces the exposure of nanopores. This significantly inhibits the shedding of fibers or particulate dust during use, maintaining the material's long-term stable low thermal conductivity and reducing the risk of indoor environmental pollution.

[0007] When used for decoration, the side of the panel or the hardened layer can be used as the decorative surface. The back of the decorative surface is attached to the wall and sealed with gypsum board or cement mortar to ensure that aerogel dust will not escape into the room during use.

[0008] Furthermore, the hardening layer includes a mesh fabric, which is attached to the surface of the insulation layer and fully impregnated with adhesive.

[0009] Beneficial effects: By laying the mesh cloth, the hardened mesh cloth forms a whole within the hardened layer to jointly bear external forces, thereby improving the integrity and stability of the hardened layer and reducing the risk of local detachment of the hardened layer during use.

[0010] Furthermore, it also includes a sealing layer, which is set on the side of the insulation layer and fixedly connected to the panel and the hardening layer on both sides to seal the side of the insulation layer. The sealing layer ensures that the entire insulation layer is enclosed, thus preventing aerogel particles from escaping and harming the health of workers during transportation or storage.

[0011] Furthermore, by weight, the adhesive comprises the following components: 50-70 parts cement, 25-45 parts water, 2-10 parts adhesive powder, and 0.1-1 parts hydroxypropyl methylcellulose.

[0012] Furthermore, the adhesive powder is a type of vinyl acetate-ethylene, acrylic acid, or acetylated modified acrylic acid.

[0013] Furthermore, the adhesive is composed of any two components selected from four substances: acrylate, acetylated modified acrylic self-crosslinking monomer, polyvinyl acetate, or water-based polymer emulsion. The weight parts of the two substances are 30-40 parts and 60-70 parts, respectively, and the total weight of the two components is 100 parts.

[0014] Furthermore, the adhesive is formed by mixing 20-40 parts of acetylated modified acrylic self-crosslinking monomer and 60-70 parts of vinyl acetate-ethylene copolymer emulsion.

[0015] Furthermore, the slurry also includes 0-10 parts of foaming agent and 0-30 parts of thermal insulation filler.

[0016] Furthermore, the sealing layer is made of one of the following materials: building waterproof and breathable membrane, geotextile, alkali-resistant fiberglass mesh composite geotextile, cement fiberglass coated felt, rigid plastic, air barrier membrane or aluminum foil, or formed by spraying and hardening adhesive mortar.

[0017] Furthermore, the insulation layer includes a suture and at least one layer of aerogel insulation material. The suture penetrates the aerogel insulation material to sew the aerogel insulation material into a whole. The starting and ending sections of the suture are equipped with reverse locking mechanisms. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of an embodiment of the present utility model; Figure 2 A schematic diagram of the panel structure of this utility model embodiment; Figure 3 This is a schematic diagram of the stitching trajectory along the thickness direction of the insulation layer in an embodiment of this utility model; Figure 4 This is a schematic diagram of the stitching trajectory on the surface of the insulation layer in an embodiment of this utility model.

[0019] The reference numerals in the accompanying drawings include: panel 110, groove 111, through hole 112, sealing layer 120, hardening layer 130, impregnation layer 131, mesh fabric layer 132, insulation layer 140, aerogel insulation material 141, cutting seam 142, suture line 143, edge sealing film 144, and tie line 150. Detailed Implementation

[0020] Example 1 Example 1 is basically as shown in the appendix. Figure 1-4 As shown, Figure 1-4 The modified aerogel felt insulation composite board shown includes an insulation layer 140, a panel 110, and a sealing layer 120. A tie line 150 is provided between the panel 110 and the insulation layer 140. The tie line 150 passes through the insulation layer 140 and fixes the insulation layer 140 to the panel 110. A hardened layer 130 is provided on the side of the insulation layer 140 away from the panel. The hardened layer 130 is formed by impregnating the surface of the insulation layer 140 with adhesive and hardening it. The hardened layer 130 is parallel to the panel 110. The sealing layer 120 is provided on the side of the insulation layer 140, and the two sides of the sealing layer are fixedly connected to the panel 110 and the hardened layer 130 respectively, and seal the side of the insulation layer 140.

[0021] The insulation layer 140 includes a suture 143 and at least one layer of aerogel insulation material 141. The suture 143 penetrates the aerogel insulation material 141 to sew the aerogel insulation material 141 into a whole. Both the starting and ending sections of the suture 143 are equipped with reverse locking mechanisms. The aerogel insulation material 141 can be selected from aerogel felt, cement-based aerogel insulation board, or inorganic foamed aerogel insulation board. Figure 3 As shown, in this embodiment, the insulation layer 140 is formed by sewing two layers of aerogel felt together with suture 143. The suture 143 is made of thermoplastic polymer fiber with a diameter of 1-2 mm. The insulation material is two layers of aerogel felt. Taking the sewing of a flat sewing machine as an example, an X-shaped cross-stitch process is used during sewing. The suture 143 is passed through the thickness direction of the two insulation materials by a needle threader, so that the two insulation materials form a whole and form a layer on the surface of the insulation body. Figure 4 Several independent small rectangles are shown, and the diagonals of each independent small rectangle are stitched together to form a grid structure, thereby improving the structural strength of the insulation layer 140 and enhancing its tear resistance and deformation resistance. Simultaneously, the spacing between the edges of adjacent small rectangles is 10-20mm, and both the starting and ending segments of the small rectangle edges are equipped with reverse locking mechanisms to lock the stitching line 143, thereby enhancing the stability of the insulation layer 140 stitching and forming a cutting seam 142. When it is necessary to cut the insulation layer 140, it can be cut along the cutting seam 142, thus avoiding the problem of unraveling stitches in the insulation layer 140 after cutting, and facilitating the subsequent cutting of building materials to meet construction needs.

[0022] The panel 110 has several through holes 112 with a diameter of 1-5mm arranged at equal intervals. The spacing between adjacent through holes 112 is 50-200mm. The diameter of the through holes 112 is adapted to the insertion method of the tie wire 150. A groove 111 for accommodating the tie wire 150 is connected between adjacent through holes 112. The width and depth of the groove 111 are adapted to the tie wire 150. Specifically, the material of the panel 110 can be one of cement fiberboard, calcium silicate board, gypsum board, wood-plastic composite material (bamboo charcoal fiberboard, etc.), medium density fiberboard, plywood, or blockboard. In this embodiment, the panel 110 is made of 120mm thick cement fiberboard. The groove 111 is 1-2mm deep and 1-2mm wide to ensure that the tie wire 150 is located in the groove 111, so as to avoid the tie wire 150 breaking due to friction during transportation, which would affect the connection strength between the insulation layer 140 and the panel 110.

[0023] The hardening layer 130 includes an impregnation layer 131 and a mesh fabric layer 132. The impregnation layer 131 is formed by impregnating and penetrating the aerogel layer with adhesive and then hardening it. The thickness of the impregnation layer 131 ranges from 0.1 to 1 mm to balance sealing effect and thermal insulation performance. The mesh fabric layer 132 is formed by fully impregnating and hardening the mesh fabric with adhesive. This invention does not limit the application time of the hardening layer 130, that is, the hardening layer 130 can be applied at any time between the panel 110 and the insulation layer 140. The tie line 150 can be set before or after fixing. Taking the panel 110 and the insulation layer 140 after fixing by the tie line 150 as an example, during hardening, firstly, the side of the insulation layer away from the panel 110 is immersed in the adhesive, so that the adhesive penetrates into the insulation layer; then, the mesh cloth of the mesh cloth layer 132 is attached to the surface of the insulation layer 140 and the tie line 150, and it is ensured that the mesh cloth is fully wetted by the adhesive and hardened under the action of the adhesive to fix it to the surface of the aerogel layer.

[0024] Specifically, in this embodiment, the mesh count of the mesh fabric ranges from 40 to 240 meshes, and the mass per unit area is 40 to 240 g / m². 2 The slurry comprises the following components: 50-70 parts cement, 25-45 parts water, 2-10 parts adhesive powder, and 0.1-1 parts hydroxypropyl methylcellulose. The adhesive powder is vinyl acetate-ethylene, acrylic acid, or acetylated modified acrylic acid. In this embodiment, the slurry is formed by mixing 60 parts cement, 40 parts water, 7 parts vinyl acetate-ethylene, and 0.5 parts hydroxypropyl methylcellulose.

[0025] The sealing layer 120 is made of one of the following materials: architectural waterproof and breathable membrane, geotextile, alkali-resistant fiberglass mesh composite geotextile, cement fiberglass coated felt, rigid plastic, air-barrier membrane, or aluminum foil, or formed by uniformly spraying and hardening adhesive mortar. When the sealing layer 120 is an air-barrier membrane, such as... Figure 1 As shown, the air-barrier membrane is attached to the surfaces of the hardened layer 130 and the panel 110 on both sides to seal the sides of the insulation layer 140, thereby preventing powder from falling off the sides of the insulation layer 140 during use or transportation.

[0026] Example 2 Example 2 is basically the same as Example 1, except that the slurry is composed of any two components selected from four substances: acrylate, acetylated modified acrylic self-crosslinking monomer, polyvinyl acetate, or water-based polymer emulsion. The weight parts of the two substances are 30-40 parts and 60-70 parts, respectively, and the total weight of the two components is 100 parts.

[0027] In this embodiment, the slurry is formed by mixing 30-40 parts of acetylated modified acrylic self-crosslinking monomer and 60-70 parts of vinyl acetate-ethylene copolymer emulsion. Specifically, the weight parts of the acetylated modified acrylic self-crosslinking monomer can be 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, or any number between two values; the weight parts of the vinyl acetate-ethylene copolymer emulsion can be 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, or any number between two values. It is only necessary to ensure that the sum of the weight parts of the acetylated modified acrylic self-crosslinking monomer and the vinyl acetate-ethylene copolymer emulsion is 100.

[0028] In this embodiment, when preparing the slurry, 40 parts of acetylated modified acrylic self-crosslinking monomer and 60 parts of vinyl acetate-ethylene copolymer emulsion were weighed and mixed to obtain the slurry. The prepared slurry was used to harden and seal the surface of the insulation layer 140.

[0029] In addition, to improve the quality of the building material manufacturing environment and further reduce the risk of dust falling from aerogel materials during the building material manufacturing process, the insulation layer also includes an edge sealing film 144. The edge sealing film 144 is made of hot melt adhesive. After the insulation body is sewn together and cut according to the processing drawings, the sides of the insulation body are sealed with the edge sealing film 144 made of hot melt adhesive, thereby reducing the problem of dust falling during the building material manufacturing process.

[0030] Example 3 Based on Examples 1 and 2, the adhesive also includes 0-10 parts of a foaming agent and 0-30 parts of a thermal insulation filler. The foaming agent can be rosin resin, and the thermal insulation filler can be vitrified microspheres. The addition of the foaming agent and the thermal insulation filler allows the hardened layer 130, the impregnated layer 131, or the sealing layer 120 formed by the adhesive to not only buffer stress caused by temperature changes or structural deformation and reduce crack formation, but also to provide certain thermal insulation properties, resulting in superior thermal insulation performance of the modified aerogel board.

[0031] Example 4 Example 4 is basically the same as Example 3, except that the surface of panel 110 has several anchor plate preset holes, and the back of panel 110 is coated with adhesive at the position corresponding to the anchor plate preset holes. The adhesive coating range is a circle concentric with the anchor plate preset holes, and the inner diameter of the circle is the same as the hole diameter of the anchor plate preset holes. In use, the composite board can be anchored to the wall by anchor bolts, and the anchor plate of the anchor bolt is located in the anchor plate preset hole, thereby ensuring the flatness of the surface of panel 110, and thus ensuring the flatness of the wall after decoration. At the same time, the adhesive allows the tie line 150 to have multiple connections with the back of panel 110. When the tie line 150 is broken during the anchoring process, it can also be fixed by adhesive, thereby ensuring the overall stability of the composite board.

[0032] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that the technical means used to solve problems in the above embodiments of this utility model can be combined to solve multiple technical problems simultaneously. For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A modified aerogel felt thermal insulation composite board, characterized in that: It includes an insulation layer and a panel. A tie line is provided between the panel and the insulation layer. The tie line passes through the insulation layer and fixes the insulation layer and the panel. A hardened layer is provided on the side of the insulation layer away from the panel. The surface of the insulation layer is wetted with adhesive and hardened to form a hardened layer.

2. The modified aerogel felt insulation composite board according to claim 1, characterized in that: The hardening layer includes a mesh fabric, which is attached to the surface of the insulation layer and fully impregnated with adhesive.

3. The modified aerogel felt insulation composite board according to claim 2, characterized in that: It also includes a sealing layer, which is set on the side of the insulation layer and is fixedly connected to the panel and the hardening layer on both sides to seal the side of the insulation layer.

4. The modified aerogel felt insulation composite board according to claim 3, characterized in that: The sealing layer is made of one of the following materials: building waterproof and breathable membrane, geotextile, alkali-resistant fiberglass mesh composite geotextile, cement fiberglass coated felt, rigid plastic, air barrier membrane or aluminum foil, or formed by spraying and hardening adhesive mortar.

5. The modified aerogel felt insulation composite board according to claim 1, characterized in that: The insulation layer includes a suture and at least one layer of aerogel insulation material. The suture penetrates the aerogel insulation material to sew the aerogel insulation material into a whole. The beginning and end of the suture are equipped with a reverse locking mechanism.

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