A passive building exterior wall insulation system

Abstract

This invention provides a passive building exterior wall insulation system, relating to the field of building insulation system technology. It includes a base layer, an insulation layer, and a finishing layer arranged sequentially from the inside out. The insulation layer covers the outside of the base layer, and the finishing layer is located on the side of the insulation layer furthest from the base layer. The insulation layer is a porous material layer, filled or sandwiched with a moisture-absorbing material. The insulation layer is formed by stacking at least two layers of insulation materials with different pore structures, and the pore size of the insulation material layer closer to the base layer is larger than that of the insulation material layer closer to the finishing layer. The beneficial effects of this invention are: it solves the problems of moisture retention within the insulation layer in existing exterior wall insulation systems, leading to decreased insulation performance, and stress concentration caused by excessively strong interfacial adhesion, resulting in cracking and detachment. It improves the moisture migration path and alleviates interfacial stress.

Description

Technical Field

[0001] This invention relates to the field of building insulation system technology, and in particular to a passive building exterior wall insulation system. Background Technology

[0002] With increasingly stringent building energy conservation requirements and the promotion of passive building concepts, the thermal insulation performance of exterior wall envelopes has become a crucial factor influencing the overall energy consumption of buildings. Current exterior wall insulation systems are typically installed on the outer side of the wall, adding an insulation layer to the base layer to reduce heat transfer and achieve both winter insulation and summer heat insulation. Common exterior wall insulation methods include thin-plaster exterior insulation systems, integrated insulation and decoration panel systems, and prefabricated exterior wall insulation systems. Their basic structure generally consists of a base layer, an insulation layer, and a finishing layer. The base layer serves as the load-bearing structure, the insulation layer provides thermal resistance, and the finishing layer provides protection and decoration. To meet different climatic conditions and construction needs, existing technologies widely use materials such as polystyrene foam boards, extruded polystyrene boards, rock wool boards, and polyurethane foam as insulation layers, combined with bonding mortar, anchors, or mechanical connections to achieve structural connections. Meanwhile, with the extension of building service life and the increasing complexity of environmental conditions, exterior wall systems not only need to have good thermal insulation performance, but also need to take into account durability, waterproofing and crack resistance. Therefore, multi-layer composite structures and interface optimization have gradually become the development direction in this field.

[0003] However, existing external wall insulation systems still have many shortcomings during long-term use. First, most insulation materials have a porous structure, making them susceptible to moisture intrusion in actual service environments. When moisture remains inside the insulation layer, it increases the material's thermal conductivity, thus reducing insulation performance. Second, moisture condenses under temperature changes, which can lead to material deterioration and interface damage. Third, existing technologies typically address these issues by improving the waterproof performance of the outer layer or enhancing the bonding strength between layers. However, simply blocking moisture can prevent the effective release of internal moisture, while excessively high bonding strength can generate significant interfacial stress under temperature or humidity changes, leading to cracking, delamination, and even the peeling of the finishing layer. Furthermore, in traditional insulation systems, the structural layers are mostly in continuous contact, lacking buffer space for microscopic deformation at the interface. Under repeated thermal expansion and contraction, as well as wet expansion and dry contraction, significant cumulative interface damage occurs. Fourth, most existing technologies focus on optimizing a single performance, such as only paying attention to thermal insulation or waterproofing, but lack a systematic consideration of the coupling relationship between water vapor migration, heat transfer and structural stress, making it difficult to simultaneously achieve thermal insulation effect and structural stability under complex environmental conditions.

[0004] Therefore, how to achieve synergistic improvement of water vapor behavior and interfacial stress without significantly increasing system complexity, thereby improving the long-term performance and reliability of external wall insulation systems, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] To address the problems in existing exterior wall insulation systems, such as moisture retention within the insulation layer leading to decreased insulation performance, and excessive interfacial adhesion causing stress concentration, cracking, and detachment, this invention provides a passive building exterior wall insulation system that improves the moisture migration path and alleviates interfacial stress.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: This invention provides a passive building exterior wall insulation system, comprising a base layer, an insulation layer, and a finishing layer arranged sequentially from the inside out. The insulation layer covers the outside of the base layer, and the finishing layer is disposed on the side of the insulation layer away from the base layer. The base layer serves as the main load-bearing structure, providing overall support and stability. The insulation layer is disposed on the outside of the base layer to reduce heat transfer from the inside out. The finishing layer protects the insulation layer and provides aesthetic appeal, thus meeting building energy-saving requirements while also considering durability and decoration. During installation, the base surface can be cleaned and leveled first, followed by the sequential laying of the insulation layer and the finishing layer to ensure the bonding stability between layers and overall flatness.

[0007] The insulation layer is a porous material layer, and its interior is filled with or sandwiched with moisture-absorbing material. Molecular sieve interlayers can be used as a form of moisture-absorbing material, forming a multi-position distributed moisture-absorbing structure together with the moisture-absorbing particles filled in the pores. By introducing a porous structure inside the insulation layer, channels for water vapor migration can be provided while ensuring insulation performance. The moisture-absorbing material can adsorb water vapor entering the insulation layer, thereby reducing the accumulation of water vapor in local areas, reducing the possibility of condensation, and improving the stability of the system under different environmental conditions.

[0008] The insulation layer is formed by stacking at least two layers of insulation materials with different pore structures, and the pore size of the insulation material layer closer to the base layer is larger than that of the insulation material layer closer to the finishing layer. Through this structural arrangement, a structural feature of transition from large pores to small pores can be formed in the thickness direction of the insulation layer, which is conducive to the migration of water vapor from the base layer to the outside, while reducing the infiltration of external moisture into the inside, thereby improving the humidity distribution inside the insulation layer to a certain extent and improving the overall performance.

[0009] An interface layer is provided between the base layer and the insulation layer and / or between the insulation layer and the finishing layer. The interface layer is one or more of an adhesive material layer, an elastic material layer, or a spacer contact structure layer. By providing the interface layer, the connection and stress transfer between the structural layers can be achieved. Different types of interface layers can provide different mechanical response characteristics, thereby reducing stress concentration at the interface and improving structural stability under conditions of temperature or humidity changes. The base layer is a concrete wall, masonry wall, or prefabricated wall panel structure.

[0010] The insulation layer is made of one or more of the following materials: polystyrene foam board, extruded polystyrene board, polyurethane foam material, rock wool board, or foamed concrete. All of the above materials have low thermal conductivity and good thermal insulation performance, and can be selected or combined according to actual engineering needs to balance fire resistance, strength performance, and ease of construction.

[0011] The moisture-absorbing material is one or more of silica gel, molecular sieve, bentonite, or porous mineral materials, which has good adsorption capacity and can physically adsorb water vapor, thereby reducing humidity fluctuations inside the insulation layer and improving the stability and durability of the system.

[0012] The moisture-absorbing material is dispersed in the pores of the insulation layer in a granular filling manner, or it is sandwiched between adjacent insulation material layers. Through different arrangement methods, the distribution of the moisture-absorbing material can be adjusted according to structural requirements to improve its matching degree with the insulation layer structure, while ensuring the integrity of the overall structure.

[0013] The insulation layer has a pore structure that is either interconnected or semi-interconnected, with a porosity of 30% to 90% and a pore size range of 0.1 μm to 5 mm. This pore structure can provide necessary thermal resistance while also providing a certain channel for gas or water vapor, thus ensuring the insulation effect while taking into account the water vapor migration performance, thereby improving the overall performance of the system.

[0014] The insulation layer has a hydrophilic treatment layer on the side near the base layer and a hydrophobic treatment layer on the side near the finishing layer. By setting surface layers with different properties at different locations, the distribution of moisture in the structure can be guided, making it easier for water vapor to migrate to the outside and reducing the possibility of external moisture penetrating inward, thereby improving the overall moisture-proof performance.

[0015] The hydrophilic treatment layer is a hydrophilic coating or hydrophilic material layer formed by coating or material modification, and the hydrophobic treatment layer is a hydrophobic coating or hydrophobic material layer formed by coating or material modification. It can be achieved through conventional surface treatment processes and has the characteristics of simple construction and strong adaptability.

[0016] When the interface layer is an adhesive material layer, the adhesive material layer is an adhesive mortar layer or a modified polymer mortar layer. This type of material can realize the connection between the base layer and the insulation layer or the insulation layer and the finishing layer, and has a certain ability to adapt to deformation while ensuring the connection strength.

[0017] When the interface layer is an elastic material layer, the elastic material layer is a rubber-based material layer, a foamed polymer layer, or an elastic resin layer; by introducing an elastic material layer, a certain buffer space can be provided when the structure deforms, thereby reducing stress concentration.

[0018] When the interface layer is an intermittent contact structure layer, the intermittent contact structure layer is composed of local contact areas formed by adhesive material and / or spaced support parts. The support parts are protruding structures formed by mortar material or polymer material. The local contact areas are distributed in a dotted, striped, or grid-like manner. Through this structural form, the interface forms a discontinuous contact state, which provides a certain deformation space for the interface while ensuring structural connection, thereby helping to alleviate stress concentration caused by temperature or humidity changes.

[0019] When the interface layer is an adhesive material layer, the adhesive strength of the adhesive material layer is 0.05MPa to 0.5MPa. This strength range can ensure the stability of the structural connection and allow for a certain degree of small displacement of the interface, thereby reducing the risk of cracking.

[0020] The finishing layer is a paint layer, a cement-based plaster layer, a tile layer, or a decorative panel layer, and is connected to the outside of the insulation layer by adhesive or mechanical fixing.

[0021] The beneficial effects of this invention are as follows: By optimizing the overall structure of the external wall insulation system, this invention achieves a synergistic improvement in the moisture migration path and interface stress state while ensuring the feasibility of conventional construction. First, by filling or sandwiching moisture-absorbing materials inside the porous insulation layer, and combining multiple layers of insulation materials with different pore sizes, moisture has a more orderly distribution space inside the structure, thereby reducing the adverse effects of local moisture retention and condensation on insulation performance and improving the stability of the system during long-term use. At the same time, a hydrophilic treatment layer is set on the side near the base layer and a hydrophobic treatment layer is set on the side near the finishing layer, so that the distribution of moisture in the structure is directional, which helps to reduce the infiltration of external moisture and promote the release of internal moisture, thereby further improving the overall moisture-proof performance.

[0022] Structurally, this invention transforms the interface connection from a traditional continuous rigid connection to a composite connection with a certain buffering capacity by setting an adhesive material layer, an elastic material layer, or a spacer contact structure layer between the base layer and the insulation layer, or between the insulation layer and the finishing layer. The elastic material layer and the spacer contact structure can provide a small deformation space under temperature or humidity changes, thereby reducing interface stress concentration and lowering the risk of cracking, delamination, and finishing layer detachment. At the same time, the bonding strength is limited within a certain range, so that the structure can meet the connection stability requirements while having a certain stress release capability.

[0023] This invention achieves a comprehensive improvement in thermal insulation performance, durability, and structural stability without increasing construction complexity, and has good prospects for engineering applications. Attached Figure Description

[0024] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0025] The attached diagram is labeled as follows: 1. Base layer; 2. Insulation layer; 3. Moisture-absorbing material; 4. Hydrophilic treatment layer; 5. Hydrophobic treatment layer; 6. Interface layer; 7. Finishing layer. Detailed Implementation

[0026] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0027] Example 1 See Figure 1 As shown, this embodiment is a passive building exterior wall insulation system, which is suitable for exterior wall energy-saving projects in extremely cold and cold regions. In this embodiment, the base layer 1 is a cast-in-place reinforced concrete wall with a thickness of 200mm. Before construction, the surface of the base layer 1 is ground with an angle grinder and the floating dust is removed by a high-pressure air blowing device to ensure that the interface is clean and flat.

[0028] In this embodiment, the insulation layer 2 adopts a double-layer composite structure. The side closer to the base layer 1 is an expanded polystyrene board (EPS board, density 18kg / m³, thickness 60mm, average pore size 1.5mm), and the side closer to the finishing layer 7 is an extruded polystyrene board (XPS board, density 32kg / m³, thickness 40mm, average pore size 0.2mm). The two layers of boards are laid together on site to form the overall insulation layer 2. Both the EPS board and XPS board are cut to size using a Haitian HT-200 hot wire cutter.

[0029] The internal pores of EPS are filled with silica gel particles with a particle size of 2-3mm, accounting for 40% of the pore volume. The particles are evenly distributed by using a ZD-1 type vibrating table filling method. A molecular sieve interlayer with a thickness of 5mm is set between the EPS board and the XPS board and fixed by laying a mesh support cloth.

[0030] The overall porosity of the insulation layer 2 is controlled at 65%, with a pore size range of 0.1μm to 5mm. The EPS layer has a connected pore structure, while the XPS layer has a semi-connected pore structure.

[0031] On the side of the EPS board closest to the substrate, a hydrophilic treatment layer 4 is formed by spraying. The coating is made of acrylic hydrophilic paint AkzoNobel Hydrophilic-01 and the spraying equipment is an airless sprayer, model Graco Ultra 395. The coating thickness is about 0.2mm. On the outside of the XPS board, a silane hydrophobic coating Wacker BS-290 is sprayed, with a thickness of about 0.15mm.

[0032] A layer of bonding mortar with dots applied between the base layer 1 and the insulation layer 2 is used as the interface layer 6, with a dot-matrix spacing of 150mm and a single dot diameter of 50mm, forming an intermittent contact structure; a layer of polyurethane foam is set between the insulation layer 2 and the finishing layer 7 as the interface layer 6, with a thickness of 5mm, and is applied using Gusmer H-20 / 35 on-site spraying equipment.

[0033] The bond strength of the bonding material layer was controlled at 0.2 MPa by pull-out test.

[0034] Finishing layer 7 uses a cement-based plastering layer and exterior wall paint system. The plastering layer is 5mm thick and is applied in two coats using a steel trowel. Finally, fluorocarbon paint is sprayed on.

[0035] Example 2 The difference between this embodiment and Embodiment 1 is that: Base layer 1 is an autoclaved aerated concrete block wall with a thickness of 240mm, and the surface is treated with interface agent YuhongYH-100 by roller coating.

[0036] Insulation layer 2 is a combination structure of rock wool board with a density of 120 kg / m³ and a polyurethane foam layer. The rock wool board is placed on the base layer side, with a thickness of 80 mm and a pore size of 1 mm. The polyurethane foam layer is placed on the outer side, with a thickness of 30 mm and a closed-cell structure. Bentonite particles with a particle size of 1-2 mm are filled into the rock wool board, and the distribution is achieved by manual filling combined with light pressure.

[0037] The hydrophilic treatment layer 4 is formed by roller coating with an aqueous silicate coating, and the hydrophobic treatment layer 5 is formed by spraying with an organosilicon emulsion.

[0038] Interface layer 6 is an elastic resin layer: an acrylic elastic coating with a thickness of 3mm, applied by roller coating.

[0039] Finishing layer 7 is a tile layer, installed using the thin-set method. The tile size is 300×600mm, and the adhesive is C2 grade tile adhesive Mapei Keraflex.

[0040] Example 3 The difference between this embodiment and Embodiment 1 is that: Base layer 1 is a precast concrete wall panel with a rough precast surface.

[0041] Insulation layer 2 uses double-layer XPS boards with thicknesses of 50mm and 30mm respectively. The inner layer has a pore diameter of approximately 0.5mm, and the outer layer has a pore diameter of 0.1mm.

[0042] Moisture-absorbing material 3 is made of molecular sieve particles and is placed between the two layers to form a sandwich layer with a thickness of 3mm.

[0043] The interface layer 6 adopts a mortar bump structure with intervals, the bump height is 5mm and the spacing is 120mm, and it is formed by plastering.

[0044] The 7th decorative layer uses an aluminum-plastic composite panel, which is fixed by mechanical anchors with expansion bolts of type M8×80.

[0045] Example 4 The difference between this embodiment and Embodiment 1 is that: The base layer 1 is a regular brick masonry wall with a thickness of 240mm. The insulation layer 2 is made of foamed concrete board with a density of 300kg / m³ and a thickness of 100mm. The interior is formed with interconnected pores through a foaming process. Silica powder (5% by mass) is added and evenly distributed during the foaming process.

[0046] The hydrophilic treatment layer 4 is achieved during the material preparation stage by adding hydrophilic additives, while the hydrophobic treatment layer 5 is achieved by external spraying of fluorosilane coating.

[0047] The interface layer 6 is coated with modified polymer mortar on the entire surface, with a thickness of 6mm.

[0048] Finishing layer 7 is a thick coating layer with a thickness of 2mm.

[0049] Example 5 The difference between this embodiment and Embodiment 1 is that: 1. The base layer is a reinforced concrete shear wall structure, and the insulation layer 2 is a combination structure of 80mm thick EPS board and 40mm thick rock wool board.

[0050] The moisture-absorbing material 3 is a porous mineral particle that is laid between two layers in a layered manner.

[0051] Interface layer 6 adopts a strip-shaped bonding structure with a strip width of 40mm and a spacing of 200mm.

[0052] Finishing layer 7 is a cement-based plastering layer and a real stone paint system.

[0053] Example 6 The difference between this embodiment and Embodiment 1 is that: The base layer 1 is a prefabricated assembled wall panel, and the insulation layer 2 adopts a polyurethane foam integral molding structure. During the foaming process, the temperature is controlled at 45℃, and the amount of foaming agent is controlled to form areas with different pore sizes.

[0054] The moisture-absorbing material is made of molecular sieve powder, which is embedded into the surface of the foam layer by spraying.

[0055] Interface layer 6 adopts a mesh-like contact structure and is formed by a toothed scraper Trowel 10×10.

[0056] The 7th cladding layer uses decorative panels and a dry-hanging system.

[0057] Comparative Example 1 This comparative example is basically the same as Example 1, except that: The insulation layer is not filled or sandwiched with moisture-absorbing material. That is, the insulation layer is only composed of EPS board and XPS board stacked together. The rest of the structure, materials and construction method are the same as in Example 1.

[0058] During construction, EPS boards and XPS boards were directly stacked and installed without the addition of silicone granule filling and molecular sieve interlayer structure.

[0059] Comparative Example 2 This comparative example is basically the same as Example 1, except that: The insulation layer adopts a single pore size structure, that is, the EPS board and XPS board use materials with the same pore size specification (the average pore size is 0.5mm), and there is no difference in pore size from the base layer side to the finish side, and the rest of the structure is consistent.

[0060] The moisture-absorbing material still uses a sandwich structure of silica gel particles and molecular sieves.

[0061] Comparative Example 3 This comparative example is basically the same as Example 1, except that: The base layer and the insulation layer, as well as the insulation layer and the finishing layer, are connected by a continuous layer of adhesive mortar, without any elastic material layer or intermittent contact structure layer.

[0062] The bonding mortar uses the same type of material, but is applied in a full-coverage manner with a thickness of approximately 5mm.

[0063] Comparative Example 4 This comparative example is basically the same as Example 1, except that: The insulation layer has no hydrophilic or hydrophobic treatment layer, and both sides of the insulation layer are untreated surfaces, while the rest of the structure remains the same.

[0064] The structures described in Examples 1-6 and Comparative Examples 1-4 were selected to prepare wall specimens with dimensions of 500mm × 500mm × complete thickness. Three sets of parallel samples were made for each scheme. After being numbered, they were cured for 7 days in a constant temperature environment of 23±2℃ and 60% relative humidity. Water vapor adsorption and migration tests, thermal conductivity change tests and interface durability tests were conducted on them.

[0065] A humidity cycling chamber (model: ESPEC SH-642) was used, with the following settings: High humidity stage: temperature 35℃, humidity 90%, lasting 12 hours; Low humidity stage: temperature 20℃, humidity 50%, lasting 12 hours; Number of cycles: 10. Test parameters: moisture absorption rate (%), condensation time (h), peak internal humidity (%RH); The data in Table 1 is obtained: Table 1. Test results of water vapor regulation performance

[0066] The initial thermal conductivity (W / m·K) and the thermal conductivity after damp heat cycling were measured using a Netzsch HFM 446 thermal conductivity meter, and the performance degradation rate was calculated. The data are shown in Table 2. Table 2 Changes in thermal conductivity

[0067] The following tests were conducted using a pull-out testing machine (Instron 5967): initial bond strength (MPa), bond strength after 50 temperature and humidity cycles (MPa), and the interface failure mode, i.e., cracking and delamination, was observed; the data are shown in Table 3. Table 3. Interface durability test results

[0068] The experimental data above show that Example 1 performed best in all indicators. It exhibited a moderate moisture absorption rate without condensation and maintained a low internal humidity level, demonstrating a significant advantage in moisture control. Furthermore, its thermal conductivity changed little, indicating stable insulation performance under humid heat cycling conditions. In addition, its high interfacial strength retention rate and lack of significant structural damage indicate good durability of the interfacial structure.

[0069] In contrast, the other embodiments showed a slight decline in individual performance indicators due to differences in material combination or structural configuration, but still maintained a relatively good overall level. In contrast, the comparative examples showed poor performance in terms of water vapor control, thermal insulation stability and interface durability due to the lack of key technical features such as moisture-absorbing materials, differences in pore size structure or interface structure optimization. In particular, the performance of comparative examples 1 and 3 was more significantly reduced.

[0070] The experimental results show that the present invention, through porous structure design, introduction of moisture-absorbing materials and optimization of interface structure, achieves synergistic improvement of water vapor migration, heat conduction and structural stress, and can significantly improve the overall performance of the external wall insulation system.

[0071] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A passive building exterior wall insulation system, characterized in that, It includes a base layer (1), an insulation layer (2) and a finishing layer (7) arranged sequentially from the inside to the outside. The insulation layer (2) is covered on the outside of the base layer (1), and the finishing layer (7) is arranged on the side of the insulation layer (2) away from the base layer (1). The insulation layer (2) is a porous material layer, and its interior is filled with or sandwiched with moisture-absorbing material (3). The insulation layer (2) is formed by stacking at least two layers of insulation materials with different pore structures, and the pore size of the insulation material layer closer to the base layer (1) is larger than the pore size of the insulation material layer closer to the finishing layer (7). An interface layer (6) is provided between the base layer (1) and the insulation layer (2) and / or between the insulation layer (2) and the finishing layer (7), wherein the interface layer (6) is one or more of an adhesive material layer, an elastic material layer or an intermittent contact structure layer.

2. The passive building exterior wall insulation system according to claim 1, characterized in that, The base layer (1) is a concrete wall, masonry wall or prefabricated wall panel structure.

3. The passive building exterior wall insulation system according to claim 1, characterized in that, The insulation layer (2) is made of one or more of the following materials: polystyrene foam board, extruded polystyrene board, polyurethane foam material, rock wool board, or foamed concrete.

4. The passive building exterior wall insulation system according to claim 1, characterized in that, The moisture-absorbing material (3) is one or more of silica gel, molecular sieve, bentonite or porous mineral materials.

5. The passive building exterior wall insulation system according to claim 1, characterized in that, The moisture-absorbing material (3) is dispersed in the pores of the insulation layer (2) in a granular filling manner, or is sandwiched between adjacent insulation material layers.

6. The passive building exterior wall insulation system according to claim 1, characterized in that, The insulation layer (2) has a pore structure that is either a continuous pore structure or a semi-continuous pore structure, with a porosity of 30% to 90% and a pore diameter range of 0.1 μm to 5 mm.

7. The passive building exterior wall insulation system according to claim 1, characterized in that, The insulation layer (2) has a hydrophilic treatment layer (4) on the side close to the base layer (1) and a hydrophobic treatment layer (5) on the side close to the finishing layer (7). The hydrophilic treatment layer (4) is a hydrophilic coating or hydrophilic material layer formed by coating or material modification, and the hydrophobic treatment layer (5) is a hydrophobic coating or hydrophobic material layer formed by coating or material modification.

8. The passive building exterior wall insulation system according to claim 1, characterized in that, When the interface layer (6) is a bonding material layer, the bonding material layer is a bonding mortar layer or a modified polymer mortar layer; When the interface layer (6) is an elastic material layer, the elastic material layer is a rubber-based material layer, a foamed polymer layer or an elastic resin layer; When the interface layer (6) is an intermittent contact structure layer, the intermittent contact structure layer is composed of local contact areas formed by adhesive material and / or spaced support parts, the support parts are protruding structures formed by mortar material or polymer material, and the local contact areas are distributed in a dotted, striped or grid-like manner.

9. The passive building exterior wall insulation system according to claim 8, characterized in that, When the interface layer (6) is an adhesive material layer, the adhesive strength of the adhesive material layer is 0.05MPa to 0.5MPa.

10. The passive building exterior wall insulation system according to claim 1, characterized in that, The finishing layer (7) is a paint layer, a cement-based plaster layer, a tile layer or a decorative panel layer, and is connected to the outside of the insulation layer (2) by bonding or mechanical fixing.

Images