Modular thermal-bridge-free insulation and decoration composite board

Abstract

The utility model provides a kind of modularization heat-bridge-free thermal insulation decorative composite board, it is related to composite board technical field, including heat bridge partition layer, the heat bridge partition layer one end is fixedly connected with decorative layer, the inside of decorative layer is provided with the maintenance indicating column for heat preservation detection.The utility model has the advantages that: the maintenance indicating column is inserted in the heat bridge partition layer inside in the decorative layer inside of modularization heat-bridge-free thermal insulation decorative composite board, when thermal insulation layer is damaged, the heat absorption of heat bridge partition layer transmission is passed through maintenance indicating column, the end of maintenance indicating column is deformed under the action of gas thermal expansion, drives protective indicating layer to generate the size change, the normality of composite board internal thermal insulation layer is conveniently and quickly identified by the size change of protective indicating layer, the influence of outside temperature on maintenance indicating column is avoided by the heat insulation protective structure formed by maintenance indicating column and protective indicating layer, guarantee the stability of maintenance indicating column work.

Description

Technical Field

[0001] This utility model relates to the field of composite panel technology, and in particular to a modular thermal bridge-free thermal insulation and decorative composite panel. Background Technology

[0002] With the increasing demand for environmental protection, energy conservation, low carbon emissions, and the establishment of a resource-saving society, various building wall insulation technologies are emerging, among which insulated decorative composite panels are one. These panels are used for both insulation and decoration of building walls, achieving insulation while maintaining aesthetics, thus helping to maintain indoor temperature in winter and summer and significantly saving energy. As the construction industry continues to demand higher standards for energy conservation, environmental protection, and building quality, modular, thermal bridge-free insulated decorative composite panels, through their modular design for rapid installation and their thermal bridge-free structure for reducing heat loss, are widely used in residential and commercial building exterior renovation and new construction projects.

[0003] However, existing modular thermal bridge-free thermal insulation decorative composite panels are usually inconvenient to test their internal insulation performance due to their closed structure, and it is also inconvenient to troubleshoot when the internal insulation layer is damaged, making them relatively inconvenient to use. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a modular thermal bridge-free thermal insulation and decorative composite panel to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a modular thermal bridge-free thermal insulation and decorative composite panel, comprising a connecting base layer for support and fixation, an insulation layer made of thermal insulation material fixedly installed inside the connecting base layer, a thermal bridge insulation layer made of heat insulation material fixedly connected to one end of the insulation layer, a decorative layer made of waterproof material fixedly connected to one end of the thermal bridge insulation layer, a maintenance indicator column for thermal insulation detection provided inside the decorative layer, a protective indicator layer fixedly connected to one end of the maintenance indicator column and the decorative layer, and a sealing connecting strip made of elastic waterproof material fixedly connected around the thermal bridge insulation layer, with a fastening block made of elastic material provided inside the sealing connecting strip.

[0006] Preferably, in any of the above solutions, the dimensions of the connecting base layer and the insulation layer are the same, the thickness of the insulation layer is greater than the thickness of the connecting base layer, and the insulation layer has an insulation stabilizing groove for fixing the thermal bridge insulation layer inside.

[0007] The above technical solution employs a base layer (fiber cement board) as the foundation support for the composite board, perfectly matching the dimensions of the insulation layer (extruded polystyrene board). An insulation stabilizing groove is created within the insulation layer to securely fix the thermal bridge partition layer. The fiber cement board base layer is rigid enough to withstand external forces during composite board installation and use without deformation, and is suitable for modular dry-hanging installation (such as keel fixing). The extruded polystyrene board insulation layer has a low thermal conductivity, effectively blocking heat transfer between indoors and outdoors. Its thickness compared to the base layer ensures the dominant role of insulation. The insulation stabilizing groove precisely positions the thermal bridge partition layer, preventing displacement and the associated thermal bridge risk, while simultaneously enhancing the connection strength between the insulation layer and the thermal bridge partition layer.

[0008] Preferably, in any of the above embodiments, the thermal bridge insulation layer includes a partition frame for support and fixation and staggered isolation pads. The partition frame is fixedly connected to the surface of the insulation layer, and the isolation pads inserted into the insulation layer are fixedly connected inside the partition frame. The partition frame is fixedly connected to the connecting base layer.

[0009] The above technical solution is adopted as follows: the partition frame (fiberglass reinforced plastic) of the thermal bridge insulation layer is embedded in the stabilizing groove of the insulation layer and fixed to the connecting base layer by self-tapping screws (with nylon heat insulation sleeves). The isolation gaskets (ceramic material) are staggered and fixed inside the partition frame, with one end inserted into the reserved hole of the insulation layer and the other end in contact with the decorative layer. The thermal conductivity of the FRP partition frame is much lower than that of metal, which can block the thermal bridge path of traditional metal connectors. At the same time, its high rigidity can support the weight of the decorative layer. The staggered distribution of ceramic isolation gaskets further divides the heat transfer path (avoiding heat transfer along a straight line). Its low thermal conductivity ensures that heat is difficult to penetrate. The partition frame is fixed to the connecting base layer, forming a thermal bridge-free heat transfer chain of "base layer-partition frame-gasket-decorative layer", which is suitable for load transfer during modular installation.

[0010] Preferably, in any of the above embodiments, the size of the decorative layer is the same as the size of the partition frame, and a connecting groove for fixing the maintenance indicator column is provided in the middle of the decorative layer.

[0011] The above technical solution is adopted: the decorative layer (fluorocarbon coated aluminum alloy plate) is perfectly matched with the size of the FRP partition frame, and the surface can be made with decorative textures such as imitation stone and wood grain. A connecting groove is opened in the middle for fixing the maintenance indicator column. The groove wall is covered with nitrile rubber sealing gasket. The fluorocarbon coated aluminum alloy plate decorative layer has both decorative and weather resistance. The fluorocarbon coating is resistant to ultraviolet aging and meets the aesthetic requirements of building exterior walls. Matching the size with the partition frame ensures the flatness of the composite board surface and avoids the decorative layer from protruding or denting. The connecting groove accurately positions the maintenance indicator column, and the rubber sealing gasket can buffer the deformation of the maintenance indicator column and prevent rainwater from seeping in, thus preventing internal components from getting damp.

[0012] Preferably, in any of the above embodiments, the inspection indicator column includes a detection section made of thermally conductive material and a bladder section made of elastic thermal insulation material. The detection end is fixedly connected to the interior of the partition frame through the decorative layer. One end of the detection end is fixedly connected to the bladder section located inside the decorative layer. The detection section and the bladder section form a cavity that stores inert gas. The protective indicator layer is fitted onto the surface of the bladder section and is fixedly connected to the surface of the decorative layer.

[0013] The above technical solution is adopted: the inspection end of the maintenance indicator column absorbs heat from the direction of the thermal bridge insulation layer, causing the internal inert gas to expand and drive the expansion and deformation of the bladder section. The bladder section does not absorb heat from the direction of the decorative layer, ensuring that the maintenance indicator column only absorbs heat and deforms from one direction, guaranteeing the stable operation of the maintenance indicator column. The detection section (made of copper) of the maintenance indicator column penetrates the connecting groove of the decorative layer, with one end welded to the FRP partition frame and the other end thermally fused to the bladder section (made of butyl rubber). The detection section and the bladder section form a sealed cavity filled with argon gas. The protective indicator layer (transparent polycarbonate material) is fitted onto the outside of the capsule segment and fixed to the surface of the decorative layer with double-sided tape. The scale is aligned with the middle of the capsule segment. The copper detection segment has strong thermal conductivity and can quickly conduct temperature changes of the thermal bridge insulation layer (such as temperature rise at the thermal bridge location due to insulation layer damage). The butyl rubber capsule segment has good sealing performance. When the inert gas expands due to heat, it can produce obvious deformation, and the elastic material ensures that the deformation is reversible. The scale of the transparent protective indicator layer can intuitively display the deformation of the capsule segment, making it easy for maintenance personnel to judge whether the insulation layer is intact, while protecting the capsule segment from external scratches.

[0014] Preferably, in any of the above embodiments, the sealing connecting strip includes a sealing gasket for compression protection and a sealing groove for insertion. The sealing gasket is fixedly installed on the circumference of the partition frame, and the sealing grooves are staggered inside the sealing gasket.

[0015] The above technical solution involves fixing the sealing gasket (EPDM rubber) of the sealing connector strip to the four edges of the FRP partition frame using butyl tape, protruding from the surface of the partition frame. The gasket has staggered sealing grooves inside, forming a "maze-like" sealing structure. The EPDM rubber gasket has strong weather resistance, is resistant to high and low temperatures, and has a high elastic recovery rate, allowing it to adapt to the splicing gaps during modular installation of composite panels. Sealing is achieved through compression deformation. The staggered sealing grooves extend the rainwater penetration path, creating a "maze effect" and improving waterproofing. Simultaneously, the sealing grooves can accommodate sealant (such as silicone sealant), further enhancing the sealing performance. The gasket is fixed around the partition frame, adapting to the splicing between composite panels, preventing rainwater from seeping in through the joints.

[0016] Preferably, in any of the above embodiments, the fastening block is fixedly installed inside the sealing gasket, the fastening block is located inside the sealing groove, and the fastening block is located on one side of the partition frame.

[0017] The above technical solution is adopted: the fastening block (closed-cell foam rubber) is fixed inside the sealing gasket with hot melt adhesive. Each sealing groove corresponds to one block, located on the side of the sealing groove near the FRP partition frame, forming an integral structure with the sealing gasket. The closed-cell foam rubber block has moderate compressive strength and can provide uniform reaction force when the sealing gasket is squeezed, ensuring uniform compression deformation of the sealing gasket and avoiding local overpressure leading to sealing gasket damage or local underpressure leading to sealing failure. Located between the sealing groove and the partition frame, it can enhance the rigidity of the sealing gasket near the partition frame (preventing the edge of the sealing gasket from warping). At the same time, it helps to position the sealing gasket when splicing composite panels. The closed-cell structure prevents the block from absorbing water, ensuring long-term elasticity and adapting to outdoor humid environments.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. A maintenance indicator column is installed inside the decorative layer of the modular thermal bridge-free thermal insulation and decorative composite panel, which is inserted into the thermal bridge insulation layer. When the insulation layer is damaged, the maintenance indicator column absorbs the heat transferred by the thermal bridge insulation layer, causing one end of the maintenance indicator column to deform under the action of gas thermal expansion. This causes the protective indicator layer to change size. The change in size of the protective indicator layer makes it easy to quickly identify whether the insulation layer inside the composite panel is normal. At the same time, the thermal insulation and protection structure formed by the maintenance indicator column and the protective indicator layer avoids the influence of external temperature on the maintenance indicator column, ensuring the stability of the maintenance indicator column's operation.

[0019] 2. A sealing strip is installed around the thermal bridge partition layer, and a fastening block is installed inside the sealing strip to increase the tightness of the connection. The sealing strip and the fastening block further enhance the tightness of the composite panel installation and improve the waterproofness and stability of the composite panel installation.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram according to an embodiment of the present utility model. Figure 2 This is a schematic diagram of the thermal bridge insulation layer according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the fracture structure of the sealing connecting strip according to an embodiment of the present utility model. Figure 4 This is a cross-sectional structural diagram of the insulation layer according to an embodiment of the present utility model. Among them: 1-connecting base layer, 2-insulation layer, 3-thermal bridge isolation layer, 31-isolation frame, 32-isolation gasket, 4-decorative layer, 5-inspection indicator column, 51-inspection section, 52-bladder section, 6-protective indicator layer, 7-sealing connecting strip, 71-sealing gasket, 72-sealing groove, 8-fastening block, 9-connecting groove. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] like Figure 1-4 As shown, a modular thermal bridge-free thermal insulation and decorative composite panel of this utility model includes a connecting base layer 1 for support and fixation. A thermal insulation layer 2 made of thermal insulation material is fixedly installed inside the connecting base layer 1. A thermal bridge insulation layer 3 made of heat insulation material is fixedly connected to one end of the thermal insulation layer 2. A decorative layer 4 made of waterproof material is fixedly connected to one end of the thermal bridge insulation layer 3. An inspection indicator column 5 for thermal insulation detection is provided inside the decorative layer 4. A protective indicator layer 6 is fixedly connected to one end of the inspection indicator column 5 and the decorative layer 4. A sealing connecting strip 7 made of elastic waterproof material is fixedly connected around the thermal bridge insulation layer 3. A fastening block 8 made of elastic material is provided inside the sealing connecting strip 7.

[0024] Preferably, in any of the above schemes, the dimensions of the connecting base layer 1 and the insulation layer 2 are the same, the thickness of the insulation layer 2 is greater than the thickness of the connecting base layer 1, and the insulation layer 2 has an insulation stabilizing groove for fixing the thermal bridge insulation layer 3 inside.

[0025] The above technical solution is adopted as follows: the connecting base layer 1 (fiber cement board material) serves as the basic support for the composite board, and its size is perfectly matched with that of the insulation layer 2 (extruded polystyrene board). The insulation layer has an insulation stabilizing groove inside, which is used to fit and fix the thermal bridge partition layer 3. The fiber cement board connecting base layer has strong rigidity and can withstand external forces during the installation and use of the composite board without deformation. It is suitable for modular dry-hanging installation (such as keel fixing). The extruded polystyrene board insulation layer has a low thermal conductivity, which can effectively block the transfer of heat between indoors and outdoors. The design of being thicker than the connecting base layer ensures the dominance of insulation. The insulation stabilizing groove accurately positions the thermal bridge partition layer 3 to avoid its displacement and the risk of thermal bridge, while enhancing the connection strength between the insulation layer and the thermal bridge partition layer.

[0026] Based on the principle of material composite, the connecting base layer provides structural support, while the insulation layer provides the core insulation function. The matching dimensions of the two ensure the overall flatness of the composite board. The insulation stabilizing groove, based on the principle of shape fitting, restricts its three-dimensional displacement through close cooperation with the thermal bridge partition layer 3, while increasing the contact area and improving the thermal barrier effect. The closed-cell structure of the extruded polystyrene board reduces air convection heat loss, achieving efficient insulation. During production, the fiber cement board and the extruded polystyrene board are first cut to ensure that their edges are aligned. The insulation stabilizing groove is processed on the surface of the insulation layer 2 using a milling machine. Then, the connecting base layer 1 and the insulation layer 2 are composited with polyurethane adhesive. The thickness of the adhesive is controlled to ensure no voids. When installing the thermal bridge partition layer 3, it is embedded in the insulation stabilizing groove and fixed with self-tapping screws. The screw tails are heat-insulated (with nylon heat-insulating sleeves). During use, the connecting base layer bears the installation load, the insulation layer blocks heat transfer, and the stabilizing groove ensures the stability of the thermal bridge partition layer. The dimensional consistency between the connecting base layer and the insulation layer is detected by a laser rangefinder.

[0027] Preferably, in any of the above embodiments, the thermal bridge insulation layer 3 includes a partition frame 31 for support and fixation and staggered isolation pads 32. The partition frame 31 is fixedly connected to the surface of the insulation layer 2, and the isolation pads 32 inserted into the insulation layer 2 are fixedly connected inside the partition frame 31. The partition frame 31 and the connecting base layer 1 are fixedly connected.

[0028] The above technical solution is adopted: the partition frame 31 (glass fiber reinforced plastic) of the thermal bridge partition layer 3 is embedded in the stabilizing groove of the insulation layer 2 and fixed to the connecting base layer 1 by self-tapping screws (with nylon heat insulation sleeves). The isolation gaskets 32 (ceramic material) are staggered and fixed inside the partition frame, with one end inserted into the reserved hole of the insulation layer and the other end in contact with the decorative layer 4. The thermal conductivity of the FRP partition frame is much lower than that of metal, which can block the thermal bridge path of traditional metal connectors. At the same time, its high rigidity can support the weight of the decorative layer. The staggered distribution of the ceramic isolation gaskets further divides the heat transfer path (avoiding heat transfer along a straight line). Its low thermal conductivity ensures that heat is difficult to penetrate. The partition frame is fixed to the connecting base layer, forming a thermal bridge-free heat transfer chain of "base layer-partition frame-gasket-decorative layer", which is suitable for load transfer during modular installation.

[0029] Based on the principle of thermal barrier, low thermal conductivity materials (FRP, ceramic) are selected to replace high thermal conductivity materials (such as metal) to reduce heat conduction. The frame structure of the partition frame surrounds the core area of ​​the insulation layer to prevent the frame from becoming a thermal bridge. The staggered distribution of the insulation gaskets is based on the principle of "path extension," which bends and lengthens the heat transfer path, increasing thermal resistance. The interference fit between the pre-drilled holes and the gaskets ensures that the gaskets are fixed and prevents loosening that could lead to thermal bridges. When producing the thermal bridge partition layer 3, the FRP partition frame 31 is first molded according to the dimensions to ensure the straightness of the frame. Holes are drilled in a quincunx pattern inside the partition frame to fix the insulation gaskets 32. The ceramic gaskets are then bonded to the insulation layer using epoxy resin. The adhesive is used to fix the partition frame at the drilled holes, ensuring the verticality of the gaskets. During installation, the partition frame is embedded into the stabilizing groove of the insulation layer and fixed to the connecting base layer 1 with self-tapping screws with nylon thermal insulation sleeves. The screws must not penetrate the insulation layer (to avoid forming metal thermal bridges). The isolation gaskets 32 are inserted into the pre-drilled holes in the insulation layer. When the decorative layer 4 is installed, it contacts the isolation gaskets to form a thermal bridge-free support. The thermal conductivity of FRP and ceramic is tested using a thermal conductivity tester to ensure that it meets the design requirements. The straightness of the partition frame is tested using a dial indicator. If it exceeds the tolerance, it is corrected by cold pressing. The misalignment distribution of the isolation gaskets is tested using a coordinate measuring machine to ensure installation accuracy.

[0030] Preferably, the decorative layer 4 has the same dimensions as the partition frame 31, and a connecting groove 9 for fixing the maintenance indicator post 5 is provided in the middle of the decorative layer 4.

[0031] The above technical solution is adopted: the decorative layer 4 (fluorocarbon coated aluminum alloy plate) is perfectly matched with the FRP partition frame 31 in size. The surface can be decorated with stone, wood grain and other decorative textures. A connecting groove 9 is opened in the middle to fix the maintenance indicator post 5. The groove wall is covered with nitrile rubber sealing gasket. The fluorocarbon coated aluminum alloy plate decorative layer has both decorative and weather resistance. The fluorocarbon coating is resistant to ultraviolet aging and meets the aesthetic requirements of building exterior walls. Matching the size with the partition frame ensures the flatness of the composite board surface and avoids the decorative layer from protruding or denting. The connecting groove 9 accurately positions the maintenance indicator post 5. The rubber sealing gasket can buffer the deformation of the maintenance indicator post and prevent rainwater from seeping in and prevent internal components from getting damp.

[0032] Based on the principle of functional layering, the decorative layer undertakes the functions of decoration and outer protection, while the partition frame undertakes the functions of thermal insulation and support. Size matching ensures that the two work together. The connecting groove is based on the principle of positioning and sealing. Through the elastic deformation of the rubber sealing gasket, the maintenance indicator column and the decorative layer are dynamically sealed, while limiting the radial displacement of the maintenance indicator column. The dense structure of the fluorocarbon coating prevents moisture and pollutants from entering, protecting the internal insulation and thermal bridge partition structure. When producing the decorative layer 4, aluminum alloy plates are cut to the required size, and the fluorocarbon coating is processed by spraying equipment. The coating thickness is detected by a film thickness gauge. The connecting groove 9 is processed in the middle of the decorative layer by a CNC machine tool to ensure the accuracy of the groove position. Then, nitrile rubber sealing gaskets are pasted on the groove wall and fixed with instant adhesive to ensure no lifting. During installation, the decorative layer 4 is fixed to the FRP partition frame 31 with self-tapping screws. The screw heads are treated with decorative caps (matching the texture of the decorative layer). The screws penetrate the partition frame but do not contact the connecting base layer (to avoid metal thermal bridge). When installing the maintenance indicator column 5, it is inserted from the connecting groove, and the sealing gasket fits tightly against the column to form a waterproof seal.

[0033] Preferably, in any of the above embodiments, the inspection indicator column 5 includes a detection section 51 made of thermally conductive material and a bladder section 52 made of elastic thermal insulation material. The detection end 51 penetrates the decorative layer 4 and is fixedly connected to the interior of the partition frame 31. One end of the detection end 51 is fixedly connected to the bladder section 52 located inside the decorative layer 4. The detection section 51 and the bladder section 52 form a cavity that stores inert gas. The protective indicator layer 6 is fitted onto the surface of the bladder section 52 and is fixedly connected to the surface of the decorative layer 4.

[0034] The above technical solution is adopted: the inspection end 51 of the inspection indicator column 5 absorbs heat from the direction of the thermal bridge isolation layer 3, causing the internal inert gas to expand due to heat, driving the expansion and deformation of the bladder section 52. The bladder section 52 does not absorb heat from the direction of the decorative layer 4, ensuring that the inspection indicator column 5 only absorbs heat and deforms from one direction, thus guaranteeing the stable operation of the inspection indicator column 5. The detection section 51 (made of copper) of the inspection indicator column 5 penetrates the connecting groove 9 of the decorative layer 4, with one end welded to the FRP partition frame 31 and the other end thermally fused to the bladder section 52 (made of butyl rubber). The detection section and the bladder section form a sealed cavity. The interior is filled with argon gas. The protective indicator layer 6 (made of transparent polycarbonate) is fitted onto the outside of the capsule section and fixed to the surface of the decorative layer 4 with double-sided tape. The scale is aligned with the middle of the capsule section. The copper detection section has strong thermal conductivity and can quickly conduct temperature changes of the thermal bridge isolation layer 3 (such as the temperature rise of the thermal bridge part due to the damage of the insulation layer 2). The butyl rubber capsule section has good sealing performance. When the inert gas is heated and expands, it can produce obvious deformation. The elastic material ensures that the deformation is reversible. The scale of the transparent protective indicator layer 6 can intuitively display the deformation of the capsule section, which makes it easy for maintenance personnel to judge whether the insulation layer is intact, while protecting the capsule section from external scratches.

[0035] Based on the principle of thermal expansion and contraction of gases, when the insulation layer 2 is damaged (such as by cracks or bulges), the outdoor low or high temperature will be transferred to the thermal bridge insulation layer 3 through the damaged area, causing a temperature change in the detection section 51. This, in turn, heats the internal argon gas, and the gas expansion pushes the capsule section 52 outward. The scale of the protective indicator layer is based on the principle of linear measurement. The amount of capsule bulging is used to infer the temperature anomaly at the thermal bridge location, indirectly judging the integrity of the insulation layer. The high thermal conductivity of copper ensures that temperature transfer is not delayed, and the low permeability of butyl rubber ensures long-term gas sealing. When manufacturing and maintaining the indicator column 5, one end of the copper detection section 51 is first processed into a welded bevel. Welding is performed on the pre-embedded metal parts (copper material) of the FRP partition frame 31, and the weld is tested for air tightness. Then, the capsule section 52 is heat-fused to the other end of the test section to form a sealed cavity. Argon gas is filled into the cavity through the needle valve. After closing the needle valve, leak testing is performed again. The protective indicator layer 6 is fitted with the capsule section to ensure that the zero point of the scale is aligned with the initial diameter of the capsule. During use, if the insulation layer is intact, the diameter of the capsule section is stable. If the insulation layer is damaged, the temperature change at the thermal bridge will cause the argon gas to expand, the capsule will bulge out, and the scale of the protective indicator layer will show an increase in diameter, indicating that maintenance is required. After maintenance, the temperature returns to normal, the capsule shrinks, and the scale returns to the initial value.

[0036] Preferably, the sealing strip 7 includes a sealing gasket 71 for compression protection and a sealing groove 72 for insertion. The sealing gasket 71 is fixedly installed on the circumference of the partition frame 31, and the sealing groove 72 is staggered inside the sealing gasket 71.

[0037] The above technical solution is adopted: the sealing gasket 71 (EPDM rubber) of the sealing connecting strip 7 is fixed to the four edges of the FRP partition frame 31 by butyl tape, protruding from the surface of the partition frame. The sealing gasket has staggered sealing grooves 72 inside, forming a "maze-like" sealing structure. The EPDM rubber sealing gasket has strong weather resistance, high and low temperature resistance, and high elastic recovery rate, which can adapt to the splicing gaps when the composite board is installed in a modular manner. It achieves sealing through compression deformation. The staggered sealing grooves 72 extend the rainwater penetration path, forming a "maze effect" and improving the waterproof effect. At the same time, the sealing grooves can accommodate sealant (such as silicone sealant) to further enhance the sealing performance. The sealing gasket is fixed around the partition frame and adapts to the splicing between composite boards to prevent rainwater from seeping in from the splicing seams.

[0038] Based on the principle of elastic sealing, the sealing gasket 71 fills the splicing gap through compression deformation. Its elastic recovery force ensures long-term sealing. Even if the composite board undergoes slight displacement due to temperature changes, it can still maintain a close fit. The staggered sealing groove is based on the principle of labyrinth sealing. By repeatedly changing the direction of rainwater penetration, it increases flow resistance. At the same time, the air in the sealing groove can form an air pressure difference, preventing rainwater from further penetrating. The chemical stability of EPDM rubber (ozone resistance, UV resistance) ensures long-term stable sealing performance. During production, EPDM rubber strips are cut according to the perimeter of the partition frame 31. The staggered sealing groove 72 is processed on the surface of the sealing gasket 71 using a CNC grooving machine. The sealing gasket is fixed to the perimeter of the partition frame with butyl tape, ensuring that the sealing gasket is aligned with the edge of the partition frame and protrudes from the surface of the partition frame. When the composite board is installed, the sealing gaskets of adjacent boards are squeezed against each other, and the air in the sealing groove 72 is compressed to form an air pressure barrier. At the same time, silicone sealant is injected into the sealing groove. After the sealant layer cures, it forms a double seal. During use, the sealing gasket prevents rainwater and dust from entering, and the sealing groove enhances the reliability of waterproofing.

[0039] Preferably, in any of the above solutions, the fastening block 8 is fixedly installed inside the sealing gasket 71, the fastening block 8 is located inside the sealing groove 72, and the fastening block 8 is located on one side of the partition frame 31.

[0040] The above technical solution is adopted: the fastening block 8 (closed-cell foam rubber) is fixed inside the sealing gasket 71 by hot melt adhesive. Each sealing groove 72 corresponds to one block, which is located on the side of the sealing groove near the FRP partition frame 31. It forms an integral structure with the sealing gasket. The closed-cell foam rubber block has moderate compression strength and can provide uniform reaction force when the sealing gasket 71 is squeezed, ensuring uniform compression deformation of the sealing gasket and avoiding local overpressure leading to damage to the sealing gasket or local underpressure leading to sealing failure. Located between the sealing groove and the partition frame, it can enhance the rigidity of the part of the sealing gasket near the partition frame (avoiding warping of the sealing gasket edge). At the same time, it helps to position the sealing gasket when splicing composite panels. The closed-cell structure prevents the block from absorbing water, ensuring long-term elasticity and adapting to outdoor humid environments.

[0041] Based on the principle of elastic support, the fastening block 8 undergoes elastic deformation when the sealing gasket is compressed. Its reaction force ensures that the sealing gasket and the decorative layer 4 of the adjacent composite board are tightly bonded, while limiting excessive compression of the sealing gasket. The design located next to the sealing groove prevents the sealing groove from collapsing during compression, ensuring the integrity of the labyrinth seal structure. The low thermal conductivity of the closed-cell foam rubber prevents the block from becoming a local thermal bridge. During production, the closed-cell foam rubber block is first cut according to requirements, and a groove is made inside the sealing gasket 71 at the position corresponding to the sealing groove 72. The block is then embedded in the groove and fixed with hot melt adhesive, ensuring that the block is flush with the surface of the sealing gasket. When the composite board is spliced, the sealing gaskets of adjacent boards are compressed against each other, and the block is compressed synchronously with the sealing gasket, providing a uniform reaction force to ensure that the sealing gasket and the decorative layer are tightly bonded. The sealing groove 72 maintains structural integrity under the support of the block. After the sealant is injected, the block can prevent the sealant from excessively seeping into the gap between the partition frame and the sealing gasket. During use, the block continuously provides elastic support to ensure that the sealing gasket is bonded for a long time.

[0042] The working principle of this modular, non-thermal bridge thermal insulation and decorative composite panel is as follows: First, the connecting base layer 1 and the insulation layer 2 are bonded together with polyurethane adhesive. The insulation stabilizing groove inside the insulation layer 2 provides a fitting reference for the thermal bridge isolation layer 3, ensuring precise positioning of both. After the isolation frame 31 of the thermal bridge isolation layer 3 is embedded in the stabilizing groove, it is fixed to the connecting base layer 1 with self-tapping screws with nylon heat insulation sleeves. The staggered isolation gaskets 32 are inserted into the reserved holes of the insulation layer to form a thermal bridge-free support frame, blocking the heat transfer path along the metal connector. Then, the decorative layer 4 is fixed to the isolation frame 31 with self-tapping screws. The central connecting groove 9 is embedded with the maintenance indicator post 5. The rubber sealing gasket on the groove wall achieves waterproof sealing. The detection section 51 of the maintenance indicator post 5 is welded to the isolation frame 31, which can conduct the temperature of the thermal bridge part in real time. The inert gas in the cavity expands or contracts with temperature changes, causing the capsule section 52 to deform. The protective indicator layer 6 displays the deformation visually through the scale, helping to determine whether the insulation layer 2 is intact. Finally, sealing strips 7 are fixed around the partition frame 31, sealing gaskets 71 protrude from the frame, and internal interlaced sealing grooves 72 form a labyrinthine waterproof structure. Fastening blocks 8 provide uniform reaction force to ensure that the sealing gaskets are uniformly compressed when the composite panels are spliced. When adjacent composite panels are installed, the sealing gaskets are squeezed against each other, forming a double seal with the sealant. All structures work together to achieve modular installation, thermal bridge-free insulation and long-term waterproofing. At the same time, the insulation performance is monitored in real time through the maintenance indicator column.

[0043] Compared with the prior art, the present invention has the following advantages: 1. A maintenance indicator post 5 is installed inside the decorative layer 4 of the modular thermal bridge-free insulation and decorative composite panel and inserted into the thermal bridge isolation layer 3. When the insulation layer 2 is damaged, the maintenance indicator post 5 absorbs the heat transferred by the thermal bridge isolation layer 3, causing one end of the maintenance indicator post 5 to deform under the action of gas thermal expansion, which causes the protective indicator layer 6 to change in size. The change in size of the protective indicator layer 6 makes it easy to quickly identify whether the insulation layer 2 inside the composite panel is normal. At the same time, the heat insulation and protection structure formed by the maintenance indicator post 5 and the protective indicator layer 6 avoids the influence of the external temperature on the maintenance indicator post 5 and ensures the stability of the operation of the maintenance indicator post 5.

[0044] 2. A sealing strip 7 is installed around the thermal bridge partition layer 3, and a fastening block 8 is installed inside the sealing strip 7 to increase the tightness of the connection. The sealing strip 7 and the fastening block 8 further enhance the tightness of the composite panel installation and improve the waterproofness and stability of the composite panel installation.

Claims

1. A modular thermal bridge-free thermal insulation decorative composite panel, comprising a connecting base layer (1) for support and fixation, wherein an insulation layer (2) made of thermal insulation material is fixedly installed inside the connecting base layer (1), characterized in that: One end of the insulation layer (2) is fixedly connected to a thermal bridge partition layer (3) made of thermal insulation material, and one end of the thermal bridge partition layer (3) is fixedly connected to a decorative layer (4) made of waterproof material. The interior of the decorative layer (4) is provided with a maintenance indicator column (5) for thermal insulation testing. One end of the maintenance indicator column (5) is provided with a protective indicator layer (6) fixedly connected to the decorative layer (4). The thermal bridge partition layer (3) is fixedly connected to a sealing strip (7) made of elastic waterproof material around its perimeter. The interior of the sealing strip (7) is provided with a fastening block (8) made of elastic material.

2. The modular thermal bridge-free thermal insulation and decorative composite panel as described in claim 1, characterized in that: The dimensions of the connecting base layer (1) and the insulation layer (2) are the same. The thickness of the insulation layer (2) is greater than the thickness of the connecting base layer (1). The insulation layer (2) has an insulation stabilizing groove for fixing the thermal bridge insulation layer (3) inside.

3. The modular thermal bridge-free thermal insulation and decorative composite panel as described in claim 2, characterized in that: The thermal bridge insulation layer (3) includes a partition frame (31) for support and fixation and staggered isolation pads (32). The partition frame (31) is fixedly connected to the surface of the insulation layer (2). The isolation pads (32) inserted into the insulation layer (2) are fixedly connected inside the partition frame (31). The partition frame (31) and the connecting base layer (1) are fixedly connected.

4. The modular thermal bridge-free thermal insulation and decorative composite panel as described in claim 3, characterized in that: The decorative layer (4) has the same dimensions as the partition frame (31), and a connecting groove (9) for fixing the maintenance indicator column (5) is provided in the middle of the decorative layer (4).

5. The modular thermal bridge-free thermal insulation and decorative composite panel as described in claim 4, characterized in that: The inspection indicator column (5) includes a detection section (51) made of thermally conductive material and a capsule section (52) made of elastic thermal insulation material. The detection section (51) penetrates the decorative layer (4) and is fixedly connected to the interior of the partition frame (31). One end of the detection section (51) is fixedly connected to the capsule section (52) located inside the decorative layer (4). The detection section (51) and the capsule section (52) form a cavity that stores inert gas. The protective indicator layer (6) is fitted onto the surface of the capsule section (52) and is fixedly connected to the surface of the decorative layer (4).

6. The modular thermal bridge-free thermal insulation and decorative composite panel as described in claim 5, characterized in that: The sealing connecting strip (7) includes a sealing gasket (71) for compression protection and a sealing groove (72) for insertion. The sealing gasket (71) is fixedly installed on the circumference of the partition frame (31), and the sealing gasket (71) has staggered sealing grooves (72) inside.

7. A modular thermal bridge-free thermal insulation and decorative composite panel as described in claim 6, characterized in that: The fastening block (8) is fixedly installed inside the sealing gasket (71), the fastening block (8) is located inside the sealing groove (72), and the fastening block (8) is located on one side of the partition frame (31).

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