Nanometer coating-based building heat-insulating PC board structure

Abstract

The application relates to the technical field of building thermal insulation, in particular to a building heat-insulating PC plate structure based on a nano coating, which comprises a first thermal insulation layer, a sandwich layer and a third thermal insulation layer arranged in sequence from top to bottom, the surfaces of the first thermal insulation layer exposed to the outside and the surfaces of the third thermal insulation layer exposed to the inside are provided with a plurality of protrusions in a matrix mode, the first thermal insulation layer and the third thermal insulation layer are coated with related coating through the protrusions, and a protection plate is arranged above the protrusions on the first thermal insulation layer; a caulking board is arranged at a splicing joint of the first thermal insulation layer, part of the caulking board extends to the outside of the first thermal insulation layer, a third support is arranged at the bottom of the caulking board, the third support is in an inverted Y-shaped structure, and the inner walls of the bottom of the inverted Y-shaped structure of the third support are coated with corresponding coating, the surface of the plate is designed as a conical protrusion structure and is coated with a reflective nano coating, the mechanical anchoring effect formed by the concave-convex surface is used to increase the adhesion of the coating, and the peeling of the coating is obviously inhibited.

Description

Technical Field

[0001] This invention relates to the field of building insulation technology, and more specifically, to a building insulation PC board structure based on a nano-coating. Background Technology

[0002] With increasing global focus on energy efficiency and sustainable development, finding effective building materials to reduce energy consumption has become crucial. Traditional building materials such as glass and ordinary plastic sheets have limitations in thermal insulation performance, leading to problems such as overheating in summer and heat loss in winter. Building insulation PC (polycarbonate) panel structures based on nano-coatings are a product that combines modern materials science and building engineering technology, aiming to improve the energy efficiency and comfort of buildings.

[0003] Existing building insulation boards often have a nano-insulation coating applied to their surface during installation. However, this coating is prone to peeling and flaking after exposure to wind, sun, and rain, resulting in a decrease in insulation performance. Secondly, during the installation process, gaps exist at the joints, requiring the application of appropriate materials to these gaps to achieve insulation. However, since the boards are already assembled, uneven application and missed areas can easily occur, further reducing the insulation effect.

[0004] Based on this, the present invention discloses a building thermal insulation PC board structure based on nano-coating. Summary of the Invention

[0005] To address the problem mentioned in the background art that after the surface of the building thermal insulation board is coated with a nano thermal insulation coating, it is easy to peel off due to environmental factors, and the splicing gaps are difficult to fill evenly in subsequent processing, all of which lead to a decrease in thermal insulation effect, the present invention provides a building thermal insulation PC board structure based on nano coating. The thermal insulation board is divided into a first insulation layer, an interlayer and a third insulation layer from top to bottom.

[0006] Since the outer surface of the first insulation layer is exposed to the outside, it will absorb a lot of light and heat energy. This will result in a lot of heat exchange between the internal panels and the interior, affecting the insulation effect. Therefore, it is often necessary to coat the outer surface with a coating to achieve the heat insulation effect. However, the coating is prone to peeling and falling off after a long time, which will affect the heat insulation effect.

[0007] In this scheme, as a further improvement to the technical solution, the surface of the first insulation layer exposed to the outside and the surface of the third insulation layer exposed to the inside are arranged in a matrix with several protrusions. The first and third insulation layers are coated with relevant coatings through the protrusions. The first insulation layer includes a first plate, and the protrusions are arranged on the upper surface of the first plate. The protrusions are coated with a reflective nano-coating, such as antimony-doped tin dioxide (ATO) or high-reflectivity nanomaterials, which can achieve a total reflectivity of over 95%, effectively reflecting infrared rays and reducing heat absorption. The protrusions have a conical structure, and several protrusions form a concave-convex structure on the surface of the first plate. The concave-convex structure increases the contact area between the substrate and the coating (which can increase it by 30%-50%). Secondly, the concave-convex structure forms physical anchoring points, which, after curing, form a barbed mechanical interlocking structure, thereby increasing the coating peel strength by 2-3 times.

[0008] Based on this, in order to further improve the service life of the reflective coating, allow the surface of the first plate to be illuminated, and improve installation efficiency;

[0009] As a further improvement to this technical solution, a protective plate is provided above the protrusion on the first insulation layer. The protective plate has a number of mesh holes in a matrix pattern that are adapted to the top of the protrusion. The protective plate is made of microporous honeycomb aluminum plate, the mesh hole diameter is <5mm, and the surface of the protective plate is treated with fluorocarbon spraying.

[0010] In another scheme, in order to further enhance the heat insulation effect, an interlayer is set between the first insulation layer and the third insulation layer. In addition to providing heat insulation, the interlayer is also designed to provide support.

[0011] As a further improvement to this technical solution, the interlayer includes several adjacent first supports disposed between the first insulation layer and the second insulation layer, with a second support disposed between two adjacent first supports, and filler material filling the space between the first and second supports. Both the first and second supports are inverted Y-shaped structures, and the inner walls of the inverted Y-shaped structures of the first and second supports are coated with an aerogel coating. Furthermore, the first, second, and third supports are made of carbon fiber composite material. Compared with traditional vertical supports, the maximum stress value of the inverted Y-shaped structure is reduced by 58% in terms of vertical load.

[0012] As a further improvement to this technical solution, in addition to enhancing the support optimization and thermal break optimization, in order to further improve the thermal insulation effect on the room in the gap between the first support and the second support, a filler material is filled between the first support and the second support. The filler material is a mixed aggregate of expanded perlite and expanded polystyrene, with a thermal conductivity ≤0.065W / (m·K), which has both fireproof and thermal insulation properties.

[0013] Based on this, another solution involves assembling the entire thermal insulation board for installation. During installation, the joints need to be treated. Since uneven coating or missed areas are prone to occur at the joints, and the boards may fall off later, thermal insulation protection needs to be provided at the joints in the structure. Optimizing the structure before coating the joints can improve the overall thermal insulation effect.

[0014] As a further improvement to this technical solution, both the first and third insulation layers have mating grooves on the same side, and both the first and third insulation layers have mating blocks adapted to the mating grooves on the other side. A joint patch is provided at the splice seam of the first insulation layer, and part of the joint patch extends to the outside of the first insulation layer. A third support is provided at the bottom of the joint patch. The third support has an inverted Y-shaped structure, and the bottom inner wall of the inverted Y-shaped structure of the third support is coated with a corresponding coating. The coating and structural material of the third support are the same as those of the first and second supports.

[0015] As a further improvement to this technical solution, the third insulation layer includes a third board. The protrusions on the surface of the third board are made of foamed ceramic insulation board as the substrate, and a high-reflection glaze layer is sintered on the surface. The third board has a three-layer composite structure, namely a rock wool layer, a polystyrene layer and a polyurethane foam layer.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In this nano-coated building insulation PC board structure, the durability and environmental adaptability of the coating are enhanced. By designing a conical protrusion structure on the surface of the board and coating it with a reflective nano-coating, the mechanical anchoring effect formed by the concave and convex surfaces is used to increase the adhesion of the coating. At the same time, it disperses thermal stress and rainwater erosion energy, significantly inhibits coating peeling and flaking, and extends the service life to 2-3 times that of traditional flat structures, thus solving the problem of thermal insulation performance degradation caused by coating failure in the existing technology.

[0018] 2. In this nano-coated building insulation PC board structure, the thermal performance of the joints and the reliability of construction are optimized. The interlocking structure of the joint groove and the joint block is adopted, and the joint filling board and the inverted Y-shaped support bracket are used to form a multi-layer physical barrier and reflection barrier, which eliminates the thermal bridge effect at the splicing gap, reduces heat loss, and avoids the problem of uneven sealing caused by blind spots in the subsequent construction joint filling process, thus improving the overall thermal insulation continuity.

[0019] 3. In this nano-coated building insulation PC board structure, the overall heat insulation and heat reflection efficiency are improved. The inverted Y-shaped support structure blocks the linear heat conduction path through the geometric broken bridge effect. Combined with the low thermal conductivity of the inner wall aerogel coating and filling material, a detour heat transfer barrier is formed. The high reflectivity nano-coating on the surface achieves multi-level photothermal reflection. Secondly, it achieves a balance between strengthening the structural mechanical properties and lightweighting. The inverted Y-shaped support system optimizes the load transfer path through the spatial truss effect. The carbon fiber composite material achieves a synergy of high strength and low thermal conductivity. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;

[0022] Figure 3 for Figure 1 Enlarged view of the structure at point B;

[0023] Figure 4 This is a schematic diagram of the overall structure of the present invention.

[0024] The meanings of the labels in the diagram are as follows:

[0025] 1. First sheet material; 2. Honeycomb holes; 3. Protrusions; 5. Protective plate; 6. Mesh; 7. Third sheet material; 8. First support; 9. Second support; 10. Filler; 11. Third support; 12. Joint patching board; 13. Butt groove; 14. Butt block. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Existing building insulation boards, after being coated with a nano-insulation coating, are prone to peeling and flaking due to environmental factors, and the gaps between the joints are difficult to fill evenly in subsequent treatment. These factors all lead to a decrease in the insulation effect.

[0028] Therefore, this invention provides a building thermal insulation PC panel structure based on a nano-coated layer. See [link / reference] Figures 1-2 and Figure 4 As shown, the thermal insulation board is divided into a first insulation layer, an interlayer, and a third insulation layer from top to bottom;

[0029] First, since the outer surface of the first insulation layer is exposed to the outside, it will absorb a lot of light and heat energy, which will result in a lot of heat exchange between the internal panels and the interior, affecting the insulation effect. Therefore, it is often necessary to coat the outer surface with a relevant coating to achieve the heat insulation effect. However, since the coating is prone to peeling and falling off after a long time, thus affecting the heat insulation effect, the outer surface of the first insulation layer and the inner surface of the third insulation layer are arranged in a matrix with several protrusions 3. The first insulation layer and the third insulation layer are coated with relevant coatings through the protrusions 3.

[0030] The first insulation layer includes a first plate 1, and the protrusion 3 is disposed on the upper surface of the first plate 1. The protrusion 3 is coated with a reflective nano-coating, such as antimony-doped tin dioxide (ATO) or a high-reflectivity nanomaterial, with a total reflectivity of over 95%, effectively reflecting infrared rays and reducing heat absorption; moreover, it is made of... Figure 2 As can be seen, the protrusions 3 have a conical structure, and several protrusions 3 form a concave-convex structure on the surface of the first plate 1. The concave-convex structure increases the contact area between the substrate and the coating (which can increase it by 30%-50%), thereby improving the heat insulation effect of the surface of the first plate 1. Moreover, compared with the traditional flat structure, these concave-convex structures form physical anchoring points. When the nano-coating penetrates into the micron-level grooves, it forms a barbed mechanical interlocking structure after curing, which increases the peel strength of the coating by 2-3 times. In contrast, when a coating is applied to a traditional flat structure, continuous cracks are easily generated on the flat surface under the action of thermal stress and wind vibration load (crack propagation rate reaches 10⁻). 6 The curvature change of the concave-convex structure can reduce the stress concentration factor from 3.0 to 1.2, forcing the crack to deflect or bifurcate at the edge of the protrusion, thus delaying the through failure; at the same time, the nano-coating on the top of the protrusion is supported by the structure below, and the kinetic energy is dispersed by the concave-convex surface multiple times when rainwater impacts, reducing the shear stress by 60%.

[0031] Furthermore, such as Figure 1 and Figure 4 As shown, in addition to the concave-convex structure, in order to further improve the service life of the reflective coating, and also to allow the surface of the first plate 1 to be illuminated, and at the same time improve the installation efficiency, the present invention adopts a protective plate 5 above the protrusion 3 on the first insulation layer. The protective plate 5 is provided with a number of mesh holes 6 in a matrix that are adapted to the top of the protrusion 3.

[0032] The protective plate 5 is made of microporous honeycomb aluminum plate, the mesh 6 has a hole diameter of <5mm, and the surface of the protective plate 5 is treated with fluorocarbon spraying.

[0033] During installation, the protective plate 5 can be directly clipped onto the top of the first plate 1. The tip of the protrusion 3 can be directly connected to the mesh 6 for installation. Furthermore, the protective plate 5 and the coating on its surface can play a role in preventing corrosion and resisting rain erosion, while retaining light transmission.

[0034] Furthermore, such as Figure 2 and Figure 3 As shown, in order to further enhance the heat insulation effect, an interlayer is provided between the first insulation layer and the third insulation layer. In addition to providing heat insulation, the interlayer is also designed to provide support. Therefore, the interlayer includes several adjacent first supports 8 provided between the first insulation layer and the second insulation layer, and a second support 9 provided between two adjacent first supports 8. The space between the first supports 8 and the second supports 9 is filled with heat insulation material.

[0035] The first support 8 and the second support 9 are both inverted Y-shaped structures, and the inner walls of the inverted Y-shaped structures of the first support 8 and the second support 9 are coated with an aerogel coating. The first support 8, the second support 9 and the third support 11 are made of carbon fiber composite material. The vertical load of the inverted Y-shaped structure is decomposed into axial pressure (i.e. along the support rod) and horizontal constraint force (i.e. transmitted through the nodes) through the Y-shaped branches, so that the stress distribution is more uniform. Compared with the traditional vertical support, the maximum stress value of the inverted Y-shaped structure is reduced by 58%. In addition, the inverted Y-shaped branches form a 45°-60° diagonal bracing system, with a lateral stiffness improvement coefficient of 3.2 (compared to the vertical column structure), which can effectively resist wind vibration (wind pressure 2.0kN / m²) and seismic action (fortification intensity 8 degrees).

[0036] In other words, firstly, the inverted Y-shaped structure of the first support 8 and the second support 9 can achieve a geometric thermal break effect. The inverted Y-shaped support is made of carbon fiber composite material with low thermal conductivity. Combined with the meandering heat transfer path formed by the structural shape, the linear thermal bridge coefficient Ψ is reduced to 0.08W / (m·K) (traditional steel support Ψ=0.45W / (m·K)). Moreover, the double superposition of the first support 8 and the second support 9 allows the heat escaping from the gaps of the adjacent first support 8 to be reflected back by the bottom of the inverted Y-shaped structure of the second support 9, so that the heat in the room can be retained and the heat conduction to the outside can be reduced. Secondly, it can also achieve lateral stiffness enhancement. The Y-shaped branches form a 45°-60° diagonal bracing system, with a lateral stiffness enhancement coefficient of 3.2 (compared to a vertical column structure), which can effectively resist wind vibration (wind pressure 2.0kN / m²) and seismic action (fortification intensity 8 degrees).

[0037] Specifically, in addition to improving support optimization and thermal break optimization, in order to further improve the insulation effect of the room in the gap between the first support 8 and the second support 9, a filler 10 is filled between the first support 8 and the second support 9. The filler 10 is a mixed aggregate of expanded perlite and expanded polystyrene, with a thermal conductivity of ≤0.065W / (m·K), and has both fireproof and heat insulation properties.

[0038] Furthermore, in addition to achieving heat insulation, a certain degree of sound insulation is also required. Therefore, the present invention has a plurality of honeycomb holes 2 arranged in a matrix in the first plate 1. The honeycomb holes 2 have a spiral textured structure and are filled with sound-absorbing cotton. The first plate 1 uses an aluminum honeycomb core, which is both lightweight and high-strength, while the spiral textured structure of the honeycomb holes 2 combined with the sound-absorbing cotton can improve the low-frequency noise absorption efficiency.

[0039] Furthermore, refer to Figures 2-4 As shown, since the entire thermal insulation board needs to be installed by assembly, the joint treatment is required during installation. Since uneven coating or missed coating is prone to occur at the joint, and it may fall off later, thermal insulation protection needs to be provided at the joint in the structure. After optimizing the structure, the coating treatment at the joint can improve the overall thermal insulation effect. In this invention, the first insulation layer and the third insulation layer are provided with a joint groove 13 on the same side, and the other side of the first insulation layer and the third insulation layer are provided with a joint block 14 that matches the joint groove 13. A joint patching plate 12 is provided at the joint of the first insulation layer, and part of the joint patching plate 12 extends to the outside of the first insulation layer. A third support 11 is provided at the bottom of the joint patching plate 12. The third support 11 has an inverted Y-shaped structure, and the bottom inner wall of the inverted Y-shaped structure of the third support 11 is coated with a corresponding coating. The coating and structural materials of the third support 11 are the same as those of the first support 8 and the second support 9.

[0040] The third insulation layer includes a third board 7. The protrusions 3 on the surface of the third board 7 are made of foamed ceramic insulation board as the base material, and a high-reflective glaze layer is sintered on the surface. This can reflect indoor heat and enhance the decorative effect. The third board 7 is a three-layer composite structure, namely a rock wool layer, a polystyrene layer and a polyurethane foam layer, which can achieve multiple heat insulation and sound insulation effects.

[0041] Specifically, during assembly, the connecting blocks 14 on one side of the first panel 1 and the third panel 7 are inserted into the corresponding connecting grooves 13 of the adjacent first panel 1 and the third panel 7. During this process, after the connecting blocks 14 are inserted into the connecting grooves 13, the extended portion of the joint patch 12 will fit against the bottom seam of the adjacent first panel 1, thus blocking the gap structure. Furthermore, the top and bottom surfaces of the joint patch 12 are also coated with an aerogel coating, which reflects indoor and outdoor heat back. In addition, a third support 11 is provided at the bottom of the joint patch 12. After the assembly is completed, as shown... Figure 2 As shown, the joint patch 12 is directly opposite the side support wall of the inverted Y-shaped structure of the two first supports 8. In this way, the heat escaping at the gap will be reflected back by the bottom of the third support 11. After the assembly is completed, after the first layer of heat insulation is achieved in the structure, the gap is further filled with the appropriate material.

[0042] In summary, this solution, through the multi-dimensional synergy of the concave-convex anchoring coating system, the inverted Y-shaped composite support structure, and the sealing design, not only solves the core defects of existing technologies such as easy coating peeling and severe thermal bridging at joints, but also achieves a comprehensive improvement in thermal insulation, sound insulation, seismic resistance, and lightweight performance. It integrates mechanical interlocking, thermal bridge blocking, and acoustic control into a single panel, thereby effectively solving the problems of existing building thermal insulation panels being prone to peeling and flaking due to environmental factors after being coated with nano-thermal insulation coatings, and the difficulty in uniformly filling splicing gaps during subsequent treatment. These factors all lead to a decrease in thermal insulation performance.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nano-coating based building thermal insulation PC board structure, characterized in that: The thermal insulation board is sequentially divided into a first thermal insulation layer, a sandwich layer and a third thermal insulation layer from top to bottom. The surface of the first thermal insulation layer exposed to the outside and the surface of the third thermal insulation layer exposed to the inside are provided with a plurality of protrusions (3) in a matrix manner, the first thermal insulation layer and the third thermal insulation layer are coated with a related coating through the protrusions (3), a protective plate (5) is arranged above the protrusions (3) on the first thermal insulation layer, and a plurality of mesh holes (6) matched with the top of the protrusions (3) are arranged in the protective plate (5) in a matrix manner. The first thermal insulation layer and the third thermal insulation layer are provided with a butt joint (13) on the same side, and the first thermal insulation layer and the third thermal insulation layer are provided with a butt block (14) matched with the butt joint (13) on the other side, the first thermal insulation layer is provided with a caulking plate (12) at the splicing joint, part of the caulking plate (12) extends to the outside of the first thermal insulation layer, and a third support (11) is arranged at the bottom of the caulking plate (12), the third support (11) is in an inverted Y-shaped structure, and the inner walls of the bottom of the inverted Y-shaped structure of the third support (11) are coated with a corresponding coating. The sandwich layer comprises a plurality of adjacent first supports (8) arranged between the first thermal insulation layer and the second thermal insulation layer, and a second support (9) is arranged between two adjacent first supports (8), and the first support (8) and the second support (9) are filled with a thermal insulation material. The first support (8) and the second support (9) are both in an inverted Y-shaped structure. The inner walls of the inverted Y-shaped structures of the first support (8), the second support (9) and the third support (11) are coated with aerogel coating, and the first support (8), the second support (9) and the third support (11) are made of carbon fiber composite material. The protrusions (3) are arranged on the upper surface of the first plate (1), and a reflective nano coating is arranged on the protrusions (3). The first plate (1) is made of aluminum honeycomb core. The protective plate (5) is made of microporous honeycomb aluminum plate, the mesh hole (6) has a pore size of less than 5 mm, and the surface of the protective plate (5) is treated with fluorocarbon spraying.

2. The nano-coating based building thermal insulation PC board structure according to claim 1, characterized in that: The inner walls of the bottoms of the first support (8) and the second support (9) are coated with a corresponding coating.

3. The nano-coating based building thermal insulation PC board structure according to claim 2, characterized in that: The first support (8) and the second support (9) are filled with a filler (10).

4. The nano-coating based building thermal insulation PC board structure according to claim 3, characterized in that: The filler (10) is a mixture of expanded perlite and foamed polystyrene aggregate.

5. The nano-coating based building thermal insulation PC board structure according to claim 1, wherein: The first thermal insulation layer comprises a first plate (1), a plurality of honeycomb holes (2) are arranged in the first plate (1) in a matrix manner, the honeycomb holes (2) are in a spiral ridge structure, and the honeycomb holes (2) are filled with sound-absorbing cotton.

6. The nano-coating based building thermal insulation PC board structure according to claim 1, wherein: The third thermal insulation layer comprises a third plate (7), the protrusions (3) on the surface of the third plate (7) are made of foamed ceramic thermal insulation plate as base material, and the surface is sintered with a high-reflective glaze layer. The third plate (7) is a three-layer composite structure, which comprises a rock wool layer, a polystyrene layer and a polyurethane foam layer.

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