Ultrathin thermal control wall body system for indoor side of building and construction method of ultrathin thermal control wall body system

Abstract

The invention discloses an ultra-thin thermal control wall system for the indoor side of a building and a construction method of the ultra-thin thermal control wall system. The system is arranged on a building main body structure or the indoor side of an existing stable facing layer of the building main body structure; and an indoor side functional structure layer with heat control and structure cooperation capabilities is formed in a centimeter-level thickness range. The system sequentially comprises a base layer interface layer, an interface regulation and control layer, a structural adhesive bonding interface, a light functional core layer and a surface construction layer from the side close to a wall to the indoor side, and the light functional core layer is made of a low-heat-conduction composite material and forms a continuous composite structure with the wall through the structural adhesive bonding interface. The surface construction layer can form a reinforced leveling structure or a waterproof construction structure according to different veneer forms so as to respectively meet the construction requirements of coating type veneers or tiling type veneers. The method is suitable for concrete and cement-based walls and existing facing walls, and is especially suitable for rapid renovation of the indoor side of an existing building.

Description

Technical Field

[0001] This invention relates to the field of building energy conservation and indoor environment control technology, and in particular to an ultra-thin thermal control wall system for the interior of a building and its construction method. Background Technology

[0002] Improving the thermal performance of existing building envelopes mainly relies on external insulation systems or thick-layer internal insulation systems. External insulation systems are difficult to implement in existing buildings due to limitations in facade conditions, construction environment, and cost factors; while thick-layer internal insulation systems generally suffer from problems such as occupying indoor space, causing significant construction disturbance, and having complex structures.

[0003] Traditional internal insulation systems typically involve applying a thick layer of insulation material to the interior side of the wall and fixing it using cement-based mortar bonding or mechanical anchoring. These systems generally suffer from drawbacks such as occupying significant interior space, long construction periods, and extensive on-site wet work. Furthermore, they are prone to thermal bridging at wall corners and beam-column junctions, affecting overall thermal performance. Additionally, in the highly alkaline environment of concrete or cement-based walls and under prolonged humid and hot conditions, some internal insulation systems are susceptible to interface instability, efflorescence, mold growth, and surface layer peeling, making them unsuitable as a long-term stable structural layer for the interior of buildings.

[0004] In actual living environments, many residential buildings are not old or dilapidated; their main structures, water and electricity pipelines, and waterproofing systems are still in normal working order. However, the following problems commonly occur during occupancy: wall paint or finishes crack and mold grow within a short period; condensation occurs on the interior surfaces of walls during the rainy season or in high-humidity conditions; and residents experience significant cold or heat discomfort near exterior walls or areas with low temperatures. These problems are not simply caused by aging decorative materials or waterproofing failure, but rather by the fact that the temperature of the interior surface of the walls is consistently lower than the indoor dew point temperature, causing moisture to condense on the wall surface, leading to mold, material deterioration, and decreased comfort.

[0005] 1) Existing internal insulation or renovation systems mostly aim to reduce the overall heat transfer coefficient, but fail to effectively increase the temperature of the inner surface of the wall on the interior side from the perspective of building physics, making it difficult to fundamentally eliminate the conditions for condensation and mold formation. 2) Traditional internal insulation systems rely on thick materials, mechanical anchoring, or wet mortar construction, resulting in large structural thickness, strong construction disturbance, and easy formation of thermal bridges at corners and joints, affecting thermal continuity. 3) Low-density foam core waterproof board or ceramic tile backing board system has insufficient long-term interface stability in high-alkali and humid environments of concrete or cement-based walls, and is at risk of efflorescence, hollowing and falling off, making it difficult to serve as a long-term structural base layer for the interior of buildings. 4) In the scenario of renovation of existing buildings, it is difficult to achieve substantial improvement in the thermal performance of the interior side of the wall through ultra-thin construction without removing the existing water and electricity pipelines or damaging the original wall structure. 5) Some low thermal conductivity intermediate layer materials are difficult to use directly as putty materials due to limitations in their bonding and water resistance properties. They usually need to be layered with a cover layer, which increases the thickness of the structure and complicates the process.

[0006] Therefore, there is an urgent need for a technical solution that can form an ultra-thin structural layer on the interior side of the wall and improve the thermal performance of the interior side of the wall without setting up a keel, using mechanical anchors, or damaging the main structure of the building.

[0007] Therefore, there is a need to design a complete wall system that can be applied to renovations of old concrete houses, basements, bathrooms, and other scenarios, while also being ultra-thin, condensation resistant, tile-compatible, adaptable to multiple scenarios, and quick to construct. Summary of the Invention

[0008] This invention provides an ultra-thin thermal control wall system for the interior of buildings and its construction method, which can solve the problems of old house renovation, basement, bathroom and other scenarios of concrete housing, while taking into account the technical problems of ultra-thinness, condensation resistance, tileability, versatility and rapid construction.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: An ultra-thin thermal control wall system for the interior of a building. The ultra-thin thermal control wall system is a multi-layer composite structure set on the interior side of the wall, including a base interface layer, an interface control layer, a lightweight functional core layer and a surface structure layer set on the outside of the lightweight functional core layer, which are sequentially set on the interior side of the wall. The lightweight functional core layer comprises a lightweight functional core board, a substrate base coating disposed on the lightweight functional core board, and a structural adhesive layer disposed on the outer side of the substrate base coating; the lightweight functional core board has a thickness of 10–20 mm and a bulk density of not less than 100 kg / m³. 3 The material is a low thermal conductivity composite with a closed-cell or semi-closed-cell structure, enabling the ultra-thin thermal control wall system to form a structurally synergistic composite structure for indoor thermal control within a centimeter-level thickness. The surface construction layer includes one of the following two structural forms: First structural form: The surface construction layer is a reinforced leveling layer, which is directly connected to the lightweight functional core layer and is used to support coating-type or non-tile-type finishes; wherein, the reinforced leveling layer includes a first cement-based epoxy mortar layer, a basalt mesh fabric layer embedded in the first cement-based epoxy mortar layer, and a second cement-based epoxy mortar layer covering the basalt mesh fabric layer. Second structural form: The surface construction layer is a waterproof coating layer disposed on the outside of the lightweight functional core layer, and the tile finishing layer is bonded to the waterproof coating layer by a modified silane structural adhesive.

[0010] Furthermore, when the wall is a concrete or cement-based wall, the base interface layer is set on the surface of the treated cement-based base layer, and an interface control layer is set on the outside of the base interface layer. When the wall is an existing and structurally stable ceramic tile wall, the interface control layer is directly applied to the cleaned ceramic tile surface.

[0011] Furthermore, the lightweight functional core layer is a flame-retardant expanded polyethylene terephthalate (PET) sheet; the bulk density of the lightweight functional core sheet is 100-200 kg / m³.

[0012] Furthermore, the lightweight functional core layer is fixed to the outside of the interface control layer through the bonding interface of the structural adhesive layer. The bonding interface of the structural adhesive layer is formed by modified silane structural adhesive, and a circumferentially continuous closed adhesive application is formed around the back of the lightweight functional core layer, and an intermittent adhesive application structure is formed in the internal region of the board.

[0013] Furthermore, the lightweight functional core layer is spliced ​​within the wall area, and the joints are filled with filler putty compatible with the lightweight functional core layer; After curing, the filler putty forms a continuous structural interface with the lightweight functional core layer, and maintains a coordinated deformation structure with the lightweight functional core layer under the action of wall thermal deformation, humidity changes and interface micro-displacement.

[0014] Furthermore, a waterproof coating layer is disposed on the outside of the lightweight functional core layer, and a tile-laying surface layer is bonded to the waterproof coating layer by a modified silane structural adhesive. The tile-laying surface layer is ceramic tile, terracotta tile, or stone.

[0015] Furthermore, a heat-reflective, low-thermal-conductivity fine leveling layer is also provided on the outside of the reinforced leveling layer to form the base layer for coating-type finishes.

[0016] Furthermore, the interior side of the wall is also equipped with boxes and / or pipelines. The boxes and pipelines are fixed to the surface of the wall by modified silane structural adhesive. The gap between the boxes and pipelines and the lightweight functional core board is filled with putty, which makes the lightweight functional core layer maintain a continuous surface base structure in the area of ​​the boxes and pipelines.

[0017] Furthermore, the construction method for ultra-thin thermal control wall systems used on the interior sides of buildings includes the following specific steps: Step 1: Base layer interface construction. Treat the base layer on the interior side of the wall and set a base layer interface layer on the concrete or cement-based base layer surface, and set an interface control layer on the outside of the base layer interface layer; or when the base layer is an already formed and structurally stable tile-faced wall, set the interface control layer directly on the cleaned tile-faced surface. Among them, the base interface layer is formed by roller coating of alkali-resistant primer, and the interface control layer is formed by roller coating of coupling primer. Step 2: Core layer pretreatment. The surface of the lightweight functional core board is treated to ensure that it has stable interface conditions with the structural bonding layer and subsequent structural layers. Step 3: Core layer bonding construction. The lightweight functional core layer is fixed to the interface control layer through the bonding interface of the structural bonding layer to form a stable ultrathin core layer structure. Step 4: Form a surface structure layer. A surface structure layer is formed on the outside of the lightweight functional core layer.

[0018] The surface construction layer includes one of the following two structural forms: First structural form: The surface construction layer is a reinforced leveling layer, which is directly connected to the lightweight functional core layer and is used to support coating-type or non-tile-type finishes; wherein, the reinforced leveling layer includes a first cement-based epoxy mortar layer, a basalt mesh fabric layer embedded in the first cement-based epoxy mortar layer, and a second cement-based epoxy mortar layer covering the basalt mesh fabric layer. Second structural form: The surface construction layer is a waterproof coating layer disposed on the outside of the lightweight functional core layer, and the tile finishing layer is bonded to the waterproof coating layer by a modified silane structural adhesive.

[0019] Step 5: Adaptive construction of the finish. Apply a coating-type finish to the outside of the surface structure layer, or apply a tile finish to the outside of the waterproof coating layer, thereby completing the construction of the ultra-thin thermal control wall system.

[0020] Furthermore, an aerogel putty layer or a carbon aerogel putty layer is used as a surface functional layer set on the outside of the reinforced leveling layer. The thickness of the aerogel putty and carbon aerogel putty is preferably no more than 3mm. This is used to provide low thermal conductivity, heat reflection, impermeability and mildew prevention, to form a smooth base layer suitable for finishing construction, and to increase the temperature of the inner surface.

[0021] The beneficial effects of this invention are reflected in: 1) This invention constructs a continuous and stable ultra-thin multi-layer composite structure on the interior side of the building, forming a functional structural layer on the interior side of the wall with thermal resistance and structural synergy. Under operating conditions, it effectively increases the temperature of the inner surface of the interior side of the wall, weakening the condensation conditions of water vapor on the wall surface from the perspective of building physics, thereby reducing the risk of condensation and mold growth.

[0022] 2) This invention defines the lightweight functional core layer as a low thermal conductivity composite material with a closed-cell or semi-closed-cell structure. By rationally setting its structural performance parameters, it can still serve as a stable structural base layer for the interior of buildings for a long time, even within a thickness range of millimeters to centimeters. Through the synergistic construction of the interface between the lightweight functional core layer and the structural adhesive, this invention differs from low-density foam board systems used only for waterproofing or as a backing for brickwork. It avoids the problems of interface instability, hollowing, or surface damage caused by insufficient core material structural strength in existing technologies. Compared with traditional internal insulation methods that rely on thick-layer insulation materials or keel systems, this invention achieves simultaneous improvement in wall thermal performance and structural stability without significantly occupying indoor space.

[0023] 3) This invention forms a circumferentially continuous and spaced structural adhesive bonding interface on the back of the lightweight functional core layer, thereby creating a continuous and stable bonding structure between the structural layer and the wall. This reduces the stress concentration and thermal bridging risks caused by point anchoring, linear bonding, or wet-applied mortar in traditional internal insulation systems, and improves the interface stability of the structural layer during long-term use.

[0024] 4) By setting a base interface layer and an interface control layer, the present invention forms a stable interface transition structure between the concrete or cement-based base layer and the lightweight functional core layer, which inhibits the alkaline migration of the base layer, thereby reducing the probability of efflorescence, whitening and interface bonding performance degradation, and is more suitable for long-term application in concrete structure buildings.

[0025] 5) This invention provides a dual-path construction method based on a surface structure layer to address different finish requirements: Under non-tile finishing conditions, a continuous and integral surface base layer is formed by reinforcing the leveling layer, which is suitable for subsequent coating or micro-cement finishing construction. Under tile finishing conditions, a waterproof structural layer is set on the outside of the lightweight functional core layer and the tiles are pasted with structural adhesive, which avoids the impact of traditional wet mortar on the thermal performance and interface stability of the structural layer, and improves the adaptability of the system in dry and wet conditions.

[0026] 6) During the construction process of this invention, there is no need to remove the existing tile surface, nor is it necessary to cut grooves or set up keel in the base layer. This can effectively reduce the degree of construction disturbance, reduce dust and noise, and shorten the construction cycle. It is especially suitable for the interior renovation of existing buildings in residential condition and the improvement of underground space functions.

[0027] 7) This invention does not rely on the properties of a single material, but through the systematic design of structural layers and interface relationships, it can form a stable structure under different base conditions and different finishing paths, and has good engineering adaptability and promotion and application value.

[0028] Therefore, this application solves the technical problems of old house renovation, basement, and bathroom renovation in concrete housing, while taking into account the characteristics of ultra-thinness, condensation resistance, tileability, versatility, and rapid construction. Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention; the main objectives and other advantages of the invention can be realized and obtained by means of the methods particularly pointed out in the description. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the complete cross-sectional structure of an ultra-thin thermal control wall system for the interior of a building under non-tile finishing conditions; the diagram shows the base interface layer, interface control layer, lightweight functional core layer and surface construction layer arranged sequentially from the wall to the interior side, excluding the putty layer and subsequent decorative coating. Figure 2 This is a schematic diagram of the complete cross-sectional structure of an ultra-thin thermal control wall system for use on the interior side of a building under the condition of tile cladding; the diagram shows the interface control layer, lightweight functional core layer and waterproof structural layer arranged sequentially from the wall to the interior side, excluding the ceramic tile, terracotta tile or stone cladding layer. Figure 3 Schematic diagram of the structure for forming a substrate base coating on the surface of a lightweight functional core layer panel. Figure 4 A schematic diagram of the adhesive application structure for setting a structural adhesive bonding interface on the back of a lightweight functional core layer sheet; Figure 5 A schematic diagram of a structure for forming a reinforced leveling layer on the outside of a lightweight functional core layer under non-tiled surface conditions; Figure 6 This is a schematic diagram of a structure for forming a waterproof structural layer on the outside of a lightweight functional core layer under the condition of tile cladding.

[0030] Attached reference numerals: 1-Wall, 2-Base layer, 3-Interface control layer, 4-Box, 5-Pipeline, 6-Lightweight functional core layer, 61-Lightweight functional core board, 62-Board primer, 63-Structural bonding layer, 7-Filling putty, 8-First cement-based epoxy mortar layer, 9-Basalt mesh layer, 10-Second cement-based epoxy mortar layer, 11-Waterproof coating layer. Detailed Implementation

[0031] The technical solutions of the present invention will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solutions of the present invention, and should not be construed as limiting the technical solutions of the present invention.

[0032] like Figures 1 to 6As shown, the ultra-thin thermal control wall system for the interior of a building includes a base interface layer 2, an interface control layer 3, a lightweight functional core layer 6 outside the interface control layer 3, and a reinforcing leveling layer or waterproof coating layer 11 outside the lightweight functional core layer 6, wherein the total thickness of the lightweight functional core layer 6 is no more than 20 mm. In other embodiments, the thickness of the lightweight functional core layer 6 can be adjusted according to the interior structural requirements, while still maintaining the structural coordination characteristics under conditions without mechanical anchoring. In this example, the wall 1 is a concrete wall 1, a cement mortar wall 1, or an existing ceramic tile surface layer that has been formed on its surface and has a stable structure in the main building structure. The waterproof coating layer 11 is a polyurethane waterproof coating layer.

[0033] In this embodiment, the base interface layer 2 is formed by applying an alkali-resistant primer to the interior surface of the wall 1. The alkali-resistant primer is used to penetrate or react with the concrete or cement-based base layer to inhibit the migration of alkaline substances in the base layer and improve the long-term adhesion stability of subsequent structural layers. An interface control layer 3 is provided on the outside of the base interface layer 2; in this embodiment, the interface control layer 3 is formed by applying a coupling primer to the interior surface of the base interface layer 2, and is used to form a stable interface system that can bond and react between the base layer and the subsequent lightweight functional core layer 6, so that the interface between different material systems can maintain synergistic stability under long-term use conditions.

[0034] In this embodiment, the lightweight functional core layer 6 is bonded to the interior side of the wall 1 through the structural adhesive layer 63. The lightweight functional core layer 6 is a low thermal conductivity composite material with a closed-cell or semi-closed-cell structure, which has both thermal resistance forming ability and structural load-bearing capacity under ultra-thin thickness conditions.

[0035] In this embodiment, the lightweight functional core layer 6 is a foamed polyethylene terephthalate (PET) sheet that meets the requirements for flame retardant performance of buildings, with a density set in the range of 100kg to 200kg / m³, and is used as a heat insulation layer and structural load-bearing base layer.

[0036] In this embodiment, a PET substrate is pre-coated on both sides of the foamed PET sheet using a substrate primer 62 to improve the interfacial bonding stability between the sheet and the structural adhesive and subsequent structural layers. In this embodiment, the substrate primer is a modified polyurethane primer; the substrate primer is pre-coated on the outer surface of the foamed PET sheet to improve interfacial adhesion and durability.

[0037] In this embodiment, the structural adhesive layer 63 is a modified silane structural adhesive layer. The structural adhesive layer 63 is applied on top of the substrate base coating 62 and is continuously laid in a dotted, striped, meshed, or full-coverage manner to form a continuous adhesive interface layer without anchors or keel structures. In this embodiment, when setting the structural adhesive layer 63, MS structural adhesive with excellent tensile and shear properties is selected and applied in a combination of serpentine strips and transverse supplementary strips. The strip width is about 10-20 mm, the thickness is about 8-10 mm, and the spacing between adjacent strips is controlled at 150-250 mm to form an approximately full-surface adhesive layer; or a striped + zoned reinforcement method is used to make the overall adhesive layer continuously cover the surface.

[0038] In this embodiment, the foamed PET boards are spliced ​​together within the wall 1 to be installed, with a 2-4mm gap reserved at the splice joint. The gap is filled with ultra-light putty or other lightweight sealant to form a continuous surface with uniform thermal resistance, thereby reducing thermal bridges between the boards.

[0039] In this embodiment, as Figure 5 As shown, when the finish is not tiled, a reinforced leveling layer is formed on the outside of the lightweight functional core layer 6 to construct a stable base layer for subsequent finish construction. In this embodiment, the reinforced leveling layer includes: a first cement-based epoxy mortar layer 8; a basalt mesh fabric layer 9 embedded in the first cement-based epoxy mortar layer 8; and a second cement-based epoxy mortar layer 10 covering the basalt mesh fabric layer 9.

[0040] In this embodiment, an aerogel putty layer or a carbon aerogel putty layer is used as a surface functional layer set on the outside of the reinforced leveling layer. The thickness of the aerogel putty and carbon aerogel putty is preferably no more than 3mm. It is used to have low thermal conductivity, heat reflection, impermeability and mildew prevention, to form a smooth base layer suitable for finishing construction and to increase the temperature of the inner surface. It is also used to further regulate the heat exchange state of the inner surface of the wall 1 while meeting the requirements of finishing construction. The material selection does not affect the basic structural relationship of the ultra-thin thermal control wall system of the present invention.

[0041] In this embodiment, such as Figure 2 , Figure 6 As shown, when the finish is a tile finish, after cleaning the existing tile finish, the interface control layer 3 is directly rolled onto the tile finish surface on the interior side of the wall 1. Then, referring to the aforementioned embodiment, the lightweight functional core layer 6 is pasted onto the interface control layer 3. A waterproof coating layer 11 is formed on the outside of the lightweight functional core layer 6 to construct a waterproof structural interface suitable for the pasting of ceramic tiles, terracotta tiles, or stone.

[0042] In this embodiment, a box body 4 and a pipeline 5 are also provided. The box body 4 and the pipeline 5 are bonded and fixed to the wall 1 with modified silane structural adhesive according to the design requirements. The gaps between the box body 4 and the pipeline 5 and the foamed PET board are filled with ultra-light putty layer.

[0043] Combination Figures 1 to 6 As shown, the construction method for the ultra-thin thermal control wall system used on the interior side of a building is further explained, and the specific steps are as follows: Step 1: Base interface construction. The base layer on the interior side of wall 1 is treated, and a base interface layer 2 is set on the surface of concrete or cement-based base layer, and an interface control layer 3 is set on the outside of the base interface layer 2; or when the base layer is an already formed and structurally stable tile-faced wall 1, the interface control layer 3 is directly set on the cleaned tile-faced surface. Among them, the base interface layer 2 is formed by roller coating of alkali-resistant primer, and the interface control layer 3 is formed by roller coating of coupling primer.

[0044] Step 2: Core layer pretreatment. The lightweight functional core board 61 is surface treated to ensure that it has stable interface conditions with the structural bonding layer 63 and subsequent structural layers.

[0045] Step 3: Core layer bonding construction. The lightweight functional core layer 6 is fixed to the interface control layer 3 through the structural bonding layer 63, forming a stable ultrathin core layer structure.

[0046] Step 4: Form a surface structure layer. A surface structure layer is formed on the outside of the lightweight functional core layer 6.

[0047] The surface construction layer includes one of the following two structural forms: First structural form: The surface construction layer is a reinforced leveling layer, which is directly connected to the lightweight functional core layer 6 and is used to support coating-type or non-tile-type finishes; wherein, the reinforced leveling layer includes a first cement-based epoxy mortar layer 8, a basalt mesh fabric layer 9 embedded in the first cement-based epoxy mortar layer 8, and a second cement-based epoxy mortar layer 10 covering the basalt mesh fabric layer 9. The second structural form is as follows: the surface construction layer is a waterproof coating layer 11 set on the outside of the lightweight functional core layer 6, and the tile finishing layer is bonded to the waterproof coating layer 11 by a modified silane structural adhesive.

[0048] Step 5: Adaptive construction of the finish. Apply a coating-type finish to the outside of the surface structure layer, or apply a tile finish to the outside of the waterproof coating layer 11, thereby completing the construction of the ultra-thin thermal control wall system.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An ultra-thin thermal control wall system for the interior of a building, characterized in that, The ultrathin thermal control wall system is a multi-layer composite structure set on the interior side of the wall (1), including a base interface layer (2), an interface control layer (3), a lightweight functional core layer (6) set on the interior side of the wall (1) in sequence, and a surface structure layer set on the exterior side of the lightweight functional core layer (6). The lightweight functional core layer (6) includes a lightweight functional core board (61), a substrate base coating (62) disposed on the lightweight functional core board (61), and a structural adhesive layer (63) disposed on the outside of the substrate base coating (62); the lightweight functional core board (61) has a thickness of 10-20 mm and a bulk density of not less than 100 kg / m³. 3 The material is a low thermal conductivity composite with a closed-cell or semi-closed-cell structure, enabling the ultra-thin thermal control wall system to form a structurally synergistic composite structure for indoor thermal control within a centimeter-level thickness. The surface construction layer includes one of the following two structural forms: First structural form: The surface construction layer is a reinforced leveling layer, which is directly connected to the lightweight functional core layer (6) and is used to support coating-type or non-tile-type finishes; wherein, the reinforced leveling layer includes a first cement-based epoxy mortar layer (8), a basalt mesh fabric layer (9) embedded in the first cement-based epoxy mortar layer (8), and a second cement-based epoxy mortar layer (10) covering the basalt mesh fabric layer (9). Second structural form: The surface construction layer is a waterproof coating layer (11) disposed on the outside of the lightweight functional core layer (6), and the tile finishing layer is bonded to the waterproof coating layer (11) by a modified silane structural adhesive.

2. The ultra-thin thermal control wall system for the interior of a building as described in claim 1, characterized in that, When the wall (1) is a concrete or cement-based wall, the base interface layer (2) is set on the surface of the treated cement-based base layer, and an interface control layer (3) is set on the outside of the base interface layer (2). When the wall (1) is a pre-formed and structurally stable ceramic tile wall, the interface control layer (3) is directly applied to the cleaned ceramic tile surface.

3. The ultra-thin thermal control wall system for the interior of a building as described in claim 1, characterized in that, The lightweight functional core layer (6) is a flame-retardant expanded polyethylene terephthalate board; the bulk density of the lightweight functional core board (61) is 100-200 kg / m³.

4. The ultra-thin thermal control wall system for the interior of a building as described in claim 1, characterized in that, The lightweight functional core layer (6) is fixed to the outside of the interface control layer (3) through the bonding interface of the structural adhesive layer (63). The bonding interface of the structural adhesive layer (63) is formed by modified silane structural adhesive, and a circumferential continuous closed adhesive is formed around the back of the lightweight functional core layer (6), and an intermittent adhesive structure is formed in the internal area of ​​the board.

5. The ultra-thin thermal control wall system for the interior of a building as described in claim 1, characterized in that, The lightweight functional core layer (6) is spliced ​​within the wall (1) and the joints are filled with filler putty (7) that is compatible with the lightweight functional core layer (6). After curing, the filler putty (7) forms a continuous structural interface with the lightweight functional core layer (6) and maintains a coordinated deformation structure with the lightweight functional core layer (6) under the action of thermal deformation, humidity change and interface micro-displacement of the wall (1).

6. The ultra-thin thermal control wall system for the interior of a building as described in claim 1, characterized in that, A waterproof coating layer (11) is disposed on the outside of a lightweight functional core layer (6), and a tile finishing layer is bonded to the waterproof coating layer (11) by a modified silane structural adhesive. The tile finishing layer is a ceramic tile, terracotta tile, or stone.

7. The ultra-thin thermal control wall system for the interior of a building as described in claim 1, characterized in that, A heat-reflective, low-thermal-conductivity fine leveling layer is also installed on the outside of the reinforced leveling layer to form the base layer for coating-type finishes.

8. The ultra-thin thermal control wall system for the interior of a building as described in claim 1, characterized in that, The interior side of the wall (1) is also provided with a box (4) and a pipeline (5). The box (4) and the pipeline (5) are fixed to the surface of the wall (1) by modified silane structural adhesive. The gap between the box (4) and the pipeline (5) and the lightweight functional core board (61) is filled with putty (7). The putty (7) makes the lightweight functional core layer (6) maintain a continuous surface base structure in the area of ​​the box (4) and the pipeline (5).

9. A construction method for an ultra-thin thermal control wall system for the interior side of a building as described in claim 8, characterized in that, The specific steps are as follows: Step 1: Base interface construction. The base layer on the interior side of the wall (1) is treated, and a base interface layer (2) is set on the surface of the concrete or cement-based base layer, and an interface control layer (3) is set on the outside of the base interface layer (2); or when the base layer is a tile-faced wall (1) that has been formed and has a stable structure, an interface control layer (3) is set directly on the cleaned tile-faced surface. Among them, the base interface layer (2) is formed by roller coating of alkali-resistant primer, and the interface control layer (3) is formed by roller coating of coupling primer. Step 2: Core layer pretreatment. The lightweight functional core board (61) is surface treated to ensure that it has stable interface conditions with the structural bonding layer (63) and subsequent structural layers. Step 3: Core layer bonding construction. The lightweight functional core layer (6) is fixed to the interface control layer (3) through the bonding interface of the structural bonding layer (63) to form a stable ultrathin core layer structure. Step 4: Form a surface structure layer. A surface structure layer is formed on the outside of the lightweight functional core layer (6). The surface construction layer includes one of the following two structural forms: First structural form: The surface construction layer is a reinforced leveling layer, which is directly connected to the lightweight functional core layer (6) and is used to support coating-type or non-tile-type finishes; wherein, the reinforced leveling layer includes a first cement-based epoxy mortar layer (8), a basalt mesh fabric layer (9) embedded in the first cement-based epoxy mortar layer (8), and a second cement-based epoxy mortar layer (10) covering the basalt mesh fabric layer (9). Second structural form: The surface construction layer is a waterproof coating layer (11) set on the outside of the lightweight functional core layer (6), and the tile finishing layer is bonded to the waterproof coating layer (11) by modified silane structural adhesive. Step 5: Adaptive construction of the finish. A coating-type finish is set on the outside of the surface structure layer, or a brick-laying finish is set on the outside of the waterproof coating layer (11), thereby completing the construction of the ultra-thin thermal control wall system.

10. The construction method of the ultra-thin thermal control wall system for the interior side of a building as described in claim 9, characterized in that, Aerogel putty or carbon aerogel putty is used as a surface functional layer on the outside of the reinforced leveling layer. The thickness of aerogel putty and carbon aerogel putty is preferably no more than 3mm. It is used to have low thermal conductivity, heat reflection, impermeability and mildew prevention, to form a smooth base layer suitable for finishing construction and to increase the temperature of the inner surface.

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