Outer wall integrated insulation board fixing structure and outer wall construction method

Abstract

The invention discloses an outer wall integrated insulation board fixing structure and an outer wall construction method, and belongs to the field of building energy conservation. The thermal broken bridge anchoring assembly penetrates through the insulation board main body; the elastic pressing mechanism is mechanically meshed with the limiting groove; the fireproof separation layer wraps the anchoring point; and the insulation board main body is bonded and fixed with the concrete base layer through a binder. Mechanical interlocking is achieved through the meshing design of the limiting grooves and the arch-shaped stainless steel pressing pieces, high-reliability connection of the heat preservation plate body and the concrete base layer is achieved in combination with the thermal bridge cutoff anchoring assemblies, and the problem that a traditional heat preservation plate is prone to falling off is solved. The main structure of the insulation board is prepared from the active auxiliary agent, the foamed phenolic resin and other materials, so that the flame retardance, weather resistance and thermal stability of the main structure of the insulation board are improved, and the fireproof performance is remarkably enhanced; meanwhile, a fireproof separation layer formed by pouring specially-made fireproof sealing paste around the anchoring point effectively improves the continuity of the main body structure of the insulation board, and the fireproof performance is improved.

Description

Technical Field

[0001] This invention belongs to the field of building energy conservation technology, specifically relating to an integrated external wall insulation board fixing structure and an external wall construction method. Background Technology

[0002] Exterior wall insulation board is a building material, also known as Horizon Building Exterior Wall Decoration Integrated Board. It is mainly used to improve the thermal insulation function of buildings and to carry out energy-saving renovation of existing buildings. It has a wide range of applications, such as shopping malls, residential buildings, hospitals and other buildings.

[0003] External wall insulation panels are directly related to the safety, durability, and energy efficiency of buildings. Currently, although external wall insulation panels possess certain properties in their structural design, such as moisture resistance, heat insulation, impact resistance, and wear resistance, the following technical problems still exist in practical applications: 1. Fire safety issues; Existing exterior wall insulation materials, such as EPS (expanded polystyrene foam board) and XPS (extruded polystyrene foam board), are inherently flammable and have weak fire resistance. They will burn and release toxic fumes when exposed to open flames. Although flame retardants are usually added during the manufacturing process, the anchoring points can disrupt the continuity of the insulation layer and become channels for flame spread during a fire, escalating the blaze. Furthermore, existing exterior wall insulation materials will age after long-term exposure, and the flame retardants may migrate or become ineffective, thus reducing the material's flame retardancy rating.

[0004] 2. Issues such as hollowness and detachment; Existing exterior wall insulation board materials have poor crack resistance and weather resistance in their finishing mortar, which can lead to cracking of the insulation board. Moisture seeping into the cracks can further erode the adhesive layer and the insulation board, increasing the risk of delamination and detachment. Additionally, moisture can also seep in when the joints of the insulation boards are not properly sealed.

[0005] Technical problems with exterior wall insulation panels are often the result of a combination of factors, including material performance, system design, construction techniques, and quality management. Fire safety and delamination / detachment are the two most prominent risks, directly threatening people's lives and property. Therefore, solving these problems is a major technical challenge that urgently needs to be addressed in the field of exterior wall construction technology. Summary of the Invention

[0006] The purpose of this invention is to provide a fixing structure for an integrated exterior wall insulation board and an exterior wall construction method to solve the problems of weak fire resistance and hollowing and falling off existing exterior wall insulation boards.

[0007] The technical solution adopted by this invention to solve the technical problem is as follows: The present invention provides an integrated external wall insulation board fixing structure, which mainly includes the following components: Insulation board body with limiting groove; Thermal break anchoring components that penetrate the main body of the insulation board; An elastic clamping mechanism that mechanically engages with the limiting groove; Fireproof partition layer covering anchor points; The main body of the insulation board is bonded and fixed to the concrete base layer with an adhesive.

[0008] Furthermore, the preparation method of the insulation board body is as follows: S1: Preparation of active additives; First, heat the layered silicate nanosheets to 180-210℃, and add thiocarboxylic acid while stirring to obtain mixture A; at 90-120℃, mix mixture A, cyclopentamethoxysiloxane, and anhydrous ethanol in a mass ratio of (1.1-2.0):(0.1-0.5):(3-6), and then calcine them at a high temperature of 620-750℃, cool them naturally to room temperature, and pass them through a 90-100 mesh sieve to obtain the active additive; S2: Preparation of foamed phenolic resin; Phenol, formaldehyde, and sodium hydroxide are reacted at a mass ratio of 1:(2.0-3.0):(0.2-0.5) at 100-120℃ for 15-20 min. After cooling to 85-95℃, active additives and epoxy oleate are added, and the mixture is reacted at 65-75℃ for 1.5-2.5 h. After drying, azodicarbonamide is added to foam the mixture to obtain foamed phenolic resin. S3: At 40℃-70℃, ceramic powder, foamed phenolic resin, mesoporous silica, and polyimide are mixed in a mass ratio of (3-5):(1.5-3):(0.1-0.3):(1.0-2.0). After high-speed stirring, the mixture is pressurized under a pressure of 3.5-5.5MPa to obtain the main body of the insulation board.

[0009] Furthermore, the amount of the active additive added is 7.5-10% of the mass of phenol; the amount of the epoxy oleate added is 1.5-3.5% of the mass of phenol.

[0010] Furthermore, the limiting groove is a stepped groove; the depth d of the limiting groove and the total thickness h of the insulation board body satisfy the following relationship: d∶h=(1∶3)-(1∶5).

[0011] Furthermore, the thermal break anchoring assembly includes: a nylon sleeve that is sequentially inserted into the insulation board body, adhesive, and concrete base layer; a stainless steel screw inserted into the nylon sleeve; the front end of the stainless steel screw extends out of the nylon sleeve and continues to be inserted into the concrete base layer; the rear end of the stainless steel screw is locked by a thermoplastic elastomer washer and a nut.

[0012] Furthermore, the outer wall of the front end of the nylon sleeve is provided with spiral ribs.

[0013] Furthermore, the elastic clamping mechanism includes: an arc-shaped stainless steel pressure plate installed in the limiting groove, an elongated hole in the middle of the arc-shaped stainless steel pressure plate, and an elastic buffer layer on the lower surface of the arc-shaped stainless steel pressure plate; the two ends of the arc-shaped stainless steel pressure plate are bent downward to form locking claws.

[0014] Furthermore, the elastic buffer layer is made of silicone rubber foam material with a thickness of 3-5 mm, a compression rebound rate of ≥90%, and a compression set of ≤10%.

[0015] Furthermore, the preparation method of the fire-retardant sealant is as follows: S1: Octadecyl polyhedral oligomeric silsesquioxane, mercaptosuccinic acid, and ethyl 2,4,6-trimethylbenzoylphenylphosphonate were synthesized at room temperature in a mass ratio of (0.35-1.2):(1.6-3.5):(1.5-3.1). S2: The product obtained in step S1, polyacrylamide, nano-hydrotalcite, and mesoporous silica are mixed in a mass ratio of (0.15-3.41):(2.35-5.3):(1.2-3.85):(0.75-2.55) and then pulped. The pulped product is stirred at low speed into a paste and then cooled naturally to obtain a fireproof sealant.

[0016] This invention provides a method for constructing an exterior wall with an integrated insulation board fixing structure, specifically including the following steps: (1) Drilling and cleaning holes in the concrete base and the main body of the insulation board; (2) Apply adhesive to the back of the insulation board and stick it to the concrete base; (3) Insert the nylon sleeve into the corresponding installation holes of the concrete base and the main body of the insulation board, insert the bow-shaped stainless steel pressure plate into the limiting groove, insert the stainless steel screw into the nylon sleeve, and pass through the elongated hole of the bow-shaped stainless steel pressure plate. (4) Fireproof sealant is injected into the space between the inner wall of the bow-shaped stainless steel sheet and the outer wall of the rear end of the stainless steel screw to form a fireproof partition layer, covering the area around the anchor point. (5) Install the thermoplastic elastomer washer and tighten the nut until the elastic buffer layer is compressed by 30-40%.

[0017] The beneficial effects of this invention are: This invention presents an integrated external wall insulation board fixing structure. At the structural level, a mechanical interlocking design is achieved through the interlocking of a limiting groove and an arc-shaped stainless steel pressure plate. Combined with an adjustable-depth thermal break anchoring assembly, this ensures a highly reliable connection between the insulation board and the concrete substrate, solving the problem of easy detachment in traditional insulation boards. At the material level, this invention uses an insulation board structure made from active additives, foamed phenolic resin, and other materials, improving the flame retardancy, weather resistance, and thermal stability of the insulation board structure, significantly enhancing its fire resistance. Simultaneously, a fireproof partition layer formed by injecting a specially formulated fireproof sealant around the anchoring points effectively improves the continuity of the insulation board structure and enhances its fire resistance. Furthermore, the insulation board and the concrete substrate are bonded together using a special insulation board adhesive, further improving the anti-detachment effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an integrated external wall insulation board fixing structure provided by the present invention.

[0019] Figure 2 for Figure 1 A magnified view of the area within the dashed box.

[0020] Figure 3 This is a schematic diagram of the elastic clamping mechanism.

[0021] Figure 4 This is a schematic diagram of the elastic clamping mechanism.

[0022] Figure 5 This is a schematic diagram of the limiting groove on the main body of the insulation board.

[0023] Figure 6 This is a schematic diagram showing the relationship between the depth d of the limiting groove and the total thickness h of the insulation board body.

[0024] In the figure, the main body of the insulation board is 1, the limiting groove is 101, the thermal break anchoring component is 2, the nylon sleeve is 201, the stainless steel screw is 202, the thermoplastic elastomer washer is 203, the nut is 204, the elastic clamping mechanism is 3, the arc-shaped stainless steel pressure plate is 301, the oblong hole is 302, the locking claw is 303, the elastic buffer layer is 304, the fireproof partition layer is 4, the adhesive is 5, and the concrete base is 6. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] In a first aspect, the present invention provides an integrated external wall insulation board fixing structure.

[0027] like Figures 1 to 5As shown, the present invention provides an integrated external wall insulation board fixing structure, which mainly includes the following components: insulation board body 1, thermal break anchoring component 2, elastic clamping mechanism 3, fireproof partition layer 4, and adhesive 5. The back of the insulation board body 1 is bonded to the concrete base layer 6 by adhesive 5, and the insulation board body 1 is fixed to the concrete base layer 6 by the thermal break anchoring component 2. The elastic clamping mechanism 3 is installed in the limiting groove 101 of the insulation board body 1. The inner side wall of the arc-shaped stainless steel pressure plate 301 in the elastic clamping mechanism 3 and the outer rear end wall of the stainless steel screw 202 in the thermal break anchoring component 2 are filled with fireproof sealant to form the fireproof partition layer 4.

[0028] Specifically, the insulation board body 1 is prepared using a chemical method, and its specific preparation process is as follows: S1: Preparation of active additives; First, layered silicate nanosheets are heated to 180℃-210℃, and then thiocarboxylic acid is added while stirring at a speed of 510r / min-650r / min. After the thiocarboxylic acid is added, stirring is continued for 25min-40min to obtain mixture A. Under the condition of 90℃-120℃, mixture A, cyclopentamethoxysiloxane and anhydrous ethanol are mixed evenly in a mass ratio of (1.1-2.0):(0.1-0.5):(3-6). Then, the mixture is calcined at 620℃-750℃, naturally cooled to room temperature and passed through a 90-100 mesh sieve to obtain an active additive, which is used to prepare foamed phenolic resin.

[0029] S2: Preparation of foamed phenolic resin; Phenol, formaldehyde, and sodium hydroxide are reacted directly at a temperature of 100℃-120℃ for 15-20 minutes in a mass ratio of 1:(2.0-3.0):(0.2-0.5). After the temperature is lowered to 85℃-95℃, the active additive prepared in step S1 (the amount of active additive added is 7.5%-10% of the mass of phenol) is added directly. After reacting for 30-45 minutes, epoxy oleate (the amount of epoxy oleate added is 1.5%-3.5% of the mass of phenol) is added and reacted at a temperature of 65℃-75℃ for 1.5-2.5 hours. After drying, a foaming agent (such as azodicarbonamide) is added to foam the resin to obtain foamed phenolic resin.

[0030] S3: Under the condition of 40℃-70℃, ceramic powder, foamed phenolic resin, mesoporous silica and polyimide are mixed in a mass ratio of (3-5):(1.5-3):(0.1-0.3):(1.0-2.0). The mixture is stirred at high speed (stirring speed 750r / min-950r / min) for more than 30 minutes. The mixture is then added to a pressure molding machine and pressurized under a pressure of 3.5MPa-5.5MPa to obtain the main body of the insulation board 1.

[0031] The insulation board body 1 prepared by this invention uses ceramic powder and foamed phenolic resin as base materials. Adding mesoporous silica improves the dispersion of the ceramic powder and foamed phenolic resin, while adding polyimide enhances the flame retardancy and thermal stability of the base materials. Simultaneously, polyimide, as a high-performance adhesive, further strengthens the bond between the ceramic powder and the foamed phenolic resin, improving the mechanical properties of the insulation board body 1. Furthermore, in the preparation of the foamed phenolic resin, this invention specifically adds an active additive prepared from layered silicate nanosheets, thiocarboxylic acid, and cyclopentamethoxysiloxane. During the foaming process with azodicarbonamide, the active additive forms a relatively stable three-dimensional network structure with the phenolic resin molecules. Through the active effect of the active additive, the flame retardancy, weather resistance, and thermal stability of the foamed phenolic resin are effectively improved, thereby enhancing the fire resistance of the insulation board body 1.

[0032] Preferably, multiple evenly distributed limiting grooves 101 are prefabricated around the main body 1 of the insulation board.

[0033] Preferably, the limiting groove 101 is a stepped groove, mainly used for installing the elastic clamping mechanism 3; at the same time, the depth d of the limiting groove 101 and the total thickness h of the insulation board body 1 satisfy the following relationship: d∶h=(1∶3)-(1∶5), as shown. Figure 6 As shown.

[0034] Specifically, the thermal break anchoring assembly 2 mainly includes: a nylon sleeve 201, a stainless steel screw 202, a thermoplastic elastomer washer 203, and a nut 204. The nylon sleeve 201 is inserted sequentially into the insulation board body 1, the adhesive 5, and the concrete base layer 6. Then, the stainless steel screw 202 is inserted into the nylon sleeve 201, with the front end of the stainless steel screw 202 extending out of the nylon sleeve 201 and continuing to be inserted into the concrete base layer 6. The rear end of the stainless steel screw 202 is locked by the thermoplastic elastomer washer 203 and the nut 204.

[0035] Preferably, the outer wall of the front end of the nylon sleeve 201 is provided with spiral ribs to enhance the grip with the concrete base layer 6.

[0036] Preferably, the difference in linear expansion between the thermoplastic elastomer gasket 203 and the insulation board body 1 is ≤0.5×10⁻⁶.-6 / ℃, so that the fixed structure of the integrated external wall insulation board has an excellent coefficient of thermal expansion.

[0037] Specifically, the elastic clamping mechanism 3 mainly includes: an arc-shaped stainless steel pressure plate 301, an elongated hole 302, a locking claw 303, and an elastic buffer layer 304; the arc-shaped stainless steel pressure plate 301 is installed in the limiting groove 101 of the insulation board body 1; the two ends of the arc-shaped stainless steel pressure plate 301 are bent downward to form locking claws 303; an elongated hole 302 is provided in the middle of the arc-shaped stainless steel pressure plate 301 for inserting the nylon sleeve 201 and the stainless steel screw 202, and allows the stainless steel screw 202 to be vertically adjusted by ±3mm; an elastic buffer layer 304 is provided on the lower surface of the arc-shaped stainless steel pressure plate 301.

[0038] Preferably, the elastic buffer layer 304 can be made of silicone rubber foam material with a thickness of 3mm-5mm, a compression resilience of ≥90%, and a compression set of ≤10%.

[0039] Specifically, the fireproof partition layer 4 is an annular seal formed by injecting fireproof sealant around the anchor points, with a coverage radius ≥ 50mm. For example, Figure 2 As shown, fireproof sealant is injected between the inner wall of the arc-shaped stainless steel pressure plate 301 and the outer wall of the rear end of the stainless steel screw 202, thereby forming a fireproof partition layer 4.

[0040] Preferably, the fire-retardant sealant is prepared as follows: S1: Octadecyl polyhedral oligomeric silsesquioxane, mercaptosuccinic acid, and ethyl 2,4,6-trimethylbenzoylphenylphosphonate are synthesized at room temperature, wherein the mass ratio of octavinyl polyhedral oligomeric silsesquioxane, mercaptosuccinic acid, and ethyl 2,4,6-trimethylbenzoylphenylphosphonate is (0.35-1.2):(1.6-3.5):(1.5-3.1). S2: Mix the product obtained in step S1, polyacrylamide, nano-hydrotalcite, and mesoporous silica in a mass ratio of (0.15-3.41):(2.35-5.3):(1.2-3.85):(0.75-2.55), pour the mixture into a high-speed pulper, and start pulping. Stir the obtained product at low speed (120r / min-160r / min) into a paste, and after natural cooling, obtain a fireproof sealant.

[0041] In the preparation of fire-retardant sealant, this invention modifies octavinyl polyhedral oligomeric silsesquioxane using mercaptosuccinic acid and ethyl 2,4,6-trimethylbenzoylphenylphosphonate, resulting in a modified octavinyl polyhedral oligomeric silsesquioxane. The addition of ethyl 2,4,6-trimethylbenzoylphenylphosphonate imparts rapid curing properties to the fire-retardant sealant. The addition of mercaptosuccinic acid as a dispersant effectively improves the dispersibility and thermal stability of the octavinyl polyhedral oligomeric silsesquioxane in ethyl 2,4,6-trimethylbenzoylphenylphosphonate, preventing particle aggregation. Higher thermal stability leads to better dispersibility. The better the fire-retardant properties, the better the fire-retardant sealant. Then, fire-retardant sealant is prepared by reacting modified octavinyl polyhedral oligomeric silsesquioxane with polyacrylamide, nano-hydrotalcite, and mesoporous silica. Using polyacrylamide as a thickener improves the overall viscosity of the fire-retardant sealant, while using nano-hydrotalcite as a dispersant improves the dispersion characteristics of modified octavinyl polyhedral oligomeric silsesquioxane in polyacrylamide. The more uniform the dispersion, the better the thermal stability and fire-retardant performance. Mesoporous silica is used as a dispersant additive; its special pore structure enables inverse crystallization of the skeleton, further improving the dispersion characteristics, thermal stability, and fire-retardant properties of the fire-retardant sealant.

[0042] Preferably, the adhesive 5 uses an existing special adhesive for insulation boards to improve the adhesion between the insulation board body 1 and the concrete base layer 6, thereby improving the thermal stability, weather resistance, impact resistance and crack resistance of the integrated external wall insulation board fixing structure.

[0043] Secondly, the present invention provides an exterior wall construction method for an integrated exterior wall insulation board fixing structure, which is mainly implemented using an integrated exterior wall insulation board fixing structure provided in the first aspect.

[0044] like Figure 2 As shown, this invention provides an exterior wall construction method for an integrated exterior wall insulation board fixing structure, the specific implementation process of which is as follows: (1) First, according to the installation position of the thermal break anchoring component 2, use a drilling machine to drill holes in the concrete base 6 and the insulation board body 1, and then clean the holes; (2) Apply adhesive 5 to the back of the insulation board body 1 and stick it in place; (3) Install the thermal break anchoring component 2 and the elastic clamping mechanism 3 simultaneously: First, insert the nylon sleeve 201 into the corresponding installation holes of the concrete base 6 and the insulation board body 1, then insert the bow-shaped stainless steel pressure plate 301 into the limiting groove 101, insert the stainless steel screw 202 into the nylon sleeve 201, and pass through the elongated hole 302 of the bow-shaped stainless steel pressure plate 301. (4) Fireproof sealant is injected into the inner wall of the bow-shaped stainless steel sheet 301 and the outer wall of the rear end of the stainless steel screw 202 to form a fireproof partition layer 4, covering the area around the anchor point. (5) Finally, install the thermoplastic elastomer washer 203 and nut 204, and tighten the nut 304 until the elastic buffer layer 304 is compressed by 30%-40%.

[0045] This invention innovatively integrates the insulation board body 1, thermal break anchoring component 2, elastic clamping mechanism 3, and fireproof partition layer 4, breaking through the technical bottleneck of traditional fixing methods. It is applicable to various building exterior wall insulation projects, and in particular solves the problems of hollowing and falling off of exterior wall insulation board materials and fire safety.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixing structure for an integrated exterior wall insulation board, characterized in that, include: Insulation board body with limiting groove; Thermal break anchoring components that penetrate the main body of the insulation board; An elastic clamping mechanism that mechanically engages with the limiting groove; Fireproof partition layer covering anchor points; The main body of the insulation board is bonded and fixed to the concrete base layer with an adhesive.

2. The integrated external wall insulation board fixing structure according to claim 1, characterized in that, The method for preparing the main body of the insulation board is as follows: S1: Preparation of active additives; First, heat the layered silicate nanosheets to 180-210℃, and add thiocarboxylic acid while stirring to obtain mixture A; at 90-120℃, mix mixture A, cyclopentamethoxysiloxane, and anhydrous ethanol in a mass ratio of (1.1-2.0):(0.1-0.5):(3-6), and then calcine them at a high temperature of 620-750℃, cool them naturally to room temperature, and pass them through a 90-100 mesh sieve to obtain the active additive; S2: Preparation of foamed phenolic resin; Phenol, formaldehyde, and sodium hydroxide are reacted at a mass ratio of 1:(2.0-3.0):(0.2-0.5) at 100-120℃ for 15-20 min. After cooling to 85-95℃, active additives and epoxy oleate are added, and the mixture is reacted at 65-75℃ for 1.5-2.5 h. After drying, azodicarbonamide is added to foam the mixture to obtain foamed phenolic resin. S3: At 40℃-70℃, ceramic powder, foamed phenolic resin, mesoporous silica, and polyimide are mixed in a mass ratio of (3-5):(1.5-3):(0.1-0.3):(1.0-2.0). After high-speed stirring, the mixture is pressurized under a pressure of 3.5-5.5MPa to obtain the main body of the insulation board.

3. The integrated external wall insulation board fixing structure according to claim 2, characterized in that, The active additive is added at a rate of 7.5-10% of the phenol mass; the epoxy oleate is added at a rate of 1.5-3.5% of the phenol mass.

4. The integrated external wall insulation board fixing structure according to claim 1, characterized in that, The limiting groove is a stepped groove; the depth d of the limiting groove and the total thickness h of the insulation board body satisfy the following relationship: d∶h=(1∶3)-(1∶5).

5. The integrated external wall insulation board fixing structure according to claim 1, characterized in that, The thermal break anchoring assembly includes: a nylon sleeve inserted sequentially into the insulation board body, adhesive, and concrete base layer; a stainless steel screw inserted into the nylon sleeve; the front end of the stainless steel screw extends out of the nylon sleeve and continues to be inserted into the concrete base layer; the rear end of the stainless steel screw is locked by a thermoplastic elastomer washer and a nut.

6. The integrated external wall insulation board fixing structure according to claim 5, characterized in that, The outer wall of the front end of the nylon sleeve is provided with spiral ribs.

7. The integrated external wall insulation board fixing structure according to claim 5, characterized in that, The elastic clamping mechanism includes: an arc-shaped stainless steel pressure plate installed in a limiting groove, an elongated hole in the middle of the arc-shaped stainless steel pressure plate, and an elastic buffer layer on the lower surface of the arc-shaped stainless steel pressure plate; the two ends of the arc-shaped stainless steel pressure plate are bent downward to form locking claws.

8. The integrated external wall insulation board fixing structure according to claim 1, characterized in that, The elastic buffer layer is made of silicone rubber foam material with a thickness of 3-5mm, a compression rebound rate of ≥90%, and a compression permanent deformation of ≤10%.

9. The integrated external wall insulation board fixing structure according to claim 1, characterized in that, The method for preparing the fire-retardant sealant is as follows: S1: Octadecyl polyhedral oligomeric silsesquioxane, mercaptosuccinic acid, and ethyl 2,4,6-trimethylbenzoylphenylphosphonate were synthesized at room temperature in a mass ratio of (0.35-1.2):(1.6-3.5):(1.5-3.1). S2: The product obtained in step S1, polyacrylamide, nano-hydrotalcite, and mesoporous silica are mixed in a mass ratio of (0.15-3.41):(2.35-5.3):(1.2-3.85):(0.75-2.55) and then pulped. The pulped product is stirred at low speed into a paste and then cooled naturally to obtain a fireproof sealant.

10. A method for constructing an exterior wall with an integrated exterior wall insulation board fixing structure as described in any one of claims 1-9, characterized in that, Includes the following steps: (1) Drilling and cleaning holes in the concrete base and the main body of the insulation board; (2) Apply adhesive to the back of the insulation board and stick it to the concrete base; (3) Insert the nylon sleeve into the corresponding installation holes of the concrete base and the main body of the insulation board, insert the bow-shaped stainless steel pressure plate into the limiting groove, insert the stainless steel screw into the nylon sleeve, and pass through the elongated hole of the bow-shaped stainless steel pressure plate. (4) Fireproof sealant is injected into the space between the inner wall of the bow-shaped stainless steel sheet and the outer wall of the rear end of the stainless steel screw to form a fireproof partition layer, covering the area around the anchor point. (5) Install the thermoplastic elastomer washer and tighten the nut until the elastic buffer layer is compressed by 30-40%.

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