Fireproof insulation board for outer wall

Abstract

The embodiment of the utility model provides a fireproof insulation board for an outer wall. The fireproof insulation board comprises a base board; the fireproof layer is arranged on the outer side of the base plate; the heat preservation layer is arranged on the inner side of the base plate; the elastic gaskets are arranged around the fixing screw holes in the base plate; the expansion type fixing screws penetrate through the elastic gaskets and the fixing screw holes in the base plate and are used for fixing the fireproof heat preservation plate to a wall body; wherein a distance is arranged between the elastic gasket and the fixing screw hole, a plurality of reinforcing ribs are arranged around the fixing screw hole, and the reinforcing ribs are uniformly distributed around the screw hole; a plurality of radial tiny notches are formed in the elastic gasket; and an anti-skid coating is arranged between the elastic gasket and the base plate. Through the scheme of the embodiment of the invention, the problem that the overall fireproof performance is reduced due to the fact that a fixing screw hole used in the installation process of the fireproof insulation board is easy to become a stress concentration point and the board is likely to crack when the temperature changes or the wall body deforms can be solved.

Description

Technical Field

[0001] This application relates to the field of fireproof and thermal insulation technology of building materials, specifically to a fireproof and thermal insulation board for exterior walls. Background Technology

[0002] Fire-resistant insulation boards for exterior walls are functional panels specifically designed for building exteriors, combining thermal insulation and fire resistance. These boards typically combine high-efficiency insulation materials with flame-retardant components, effectively reducing building energy consumption while improving building safety. However, these fire-resistant insulation boards face some challenges in practical applications. For example, the fixing screw holes used during installation can easily become stress concentration points. This can lead to uneven stress distribution within the board when the exterior wall changes with ambient temperature or deforms, resulting in cracks at these weak points. Once the board cracks, it not only compromises the stability of the overall structure but also significantly reduces the board's fire resistance, thus affecting the fire safety of the entire building. Summary of the Invention

[0003] In view of this, the present disclosure provides a fireproof and heat-insulating board for exterior walls, which at least partially solves the problems existing in the prior art.

[0004] This application discloses a fireproof and heat-insulating board for exterior walls, comprising:

[0005] substrate;

[0006] A fireproof layer is installed on the outside of the substrate;

[0007] The insulation layer is located on the inner side of the substrate;

[0008] Elastic washers are placed around the fixing screw holes on the substrate;

[0009] Expansion-type fixing screws, passing through elastic washers and fixing screw holes on the base plate, are used to fix the fireproof insulation board to the wall; wherein...

[0010] A distance is provided between the elastic washer and the fixing screw hole, and a number of reinforcing ribs are provided around the fixing screw hole, which are evenly distributed around the screw hole.

[0011] The elastic pad has multiple radially arranged micro-grooves; and

[0012] An anti-slip coating is provided between the elastic pad and the substrate.

[0013] According to one embodiment, a raised structure is provided on one side of the substrate, the raised structure matching a groove on the wall.

[0014] According to one embodiment, the fireproof layer includes an expanded graphite layer and a ceramic fiber layer.

[0015] According to one embodiment, the insulation layer has a microporous structure inside.

[0016] According to one embodiment, the distance between the elastic washer and the fixing screw hole is not less than 2mm.

[0017] According to one embodiment, the thickness of the substrate is more than five times the total thickness of the fireproof layer and the insulation layer.

[0018] According to one embodiment, the head of the expansion-type fixing screw is provided with a reinforcing rib, and the part of the reinforcing rib that contacts the elastic washer has a rough surface.

[0019] According to one embodiment, a heat-insulating adhesive layer is provided between the substrate and the fireproof layer.

[0020] According to one embodiment, the elastic pad has an embedded metal mesh support structure.

[0021] This disclosure provides a fireproof and heat-insulating board for exterior walls, comprising: a base plate; a fireproof layer disposed on the outer side of the base plate; a heat-insulating layer disposed on the inner side of the base plate; an elastic gasket disposed around a fixing screw hole on the base plate; and an expansion-type fixing screw passing through the elastic gasket and the fixing screw hole on the base plate for fixing the fireproof and heat-insulating board to the wall. A distance is provided between the elastic gasket and the fixing screw hole, and several reinforcing ribs are provided around the fixing screw hole, these reinforcing ribs being evenly distributed around the screw hole. The elastic gasket has multiple radial micro-grooves, and an anti-slip coating is provided between the elastic gasket and the base plate. The solution of this disclosure can solve the problem that the fixing screw holes used during the installation of the fireproof and heat-insulating board easily become stress concentration points, which may cause the board to crack under temperature changes or wall deformation, thereby reducing the overall fire resistance performance. Attached Figure Description

[0022] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0023] Figure 1 This is a fireproof and heat-insulating board of this utility model. Axial view of the structure;

[0024] Figure 2 This utility model Figure 1 Explosion-proof structural diagram of fireproof insulation board;

[0025] Figure 3 This utility model Figure 2 Enlarged view of a medium-elasticity gasket;

[0026] Figure 4 This utility model Figure 2 Enlarged view of the expansion screw.

[0027] In the diagram: 1. Substrate; 2. Fireproof layer; 3. Thermal insulation layer; 4. Elastic gasket; 5. Expansion-type fixing screw; 6. Raised structure; 7. Ceramic fiber layer; 8. Microporous structure; 9. Micro-grooves; 10. Anti-slip coating; 11. Reinforcing rib; 12. Strengthening rib; 13. Thermal insulation adhesive layer; 14. Metal mesh support structure Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings. The illustrative implementation methods and descriptions of the embodiments of this disclosure are only used to explain the embodiments of this disclosure and are not intended to limit the embodiments of this disclosure.

[0029] like Figure 1 and Figure 2 As shown, a fireproof and heat-insulating board for exterior walls according to this application includes a base plate 1, a fireproof layer 2, a heat-insulating layer 3, an elastic gasket 4, and expansion bolts 5. The components work together through specific installation positions and connection methods to achieve their functions.

[0030] Substrate 1 is the core component of the fireproof insulation board for exterior walls, located at the center of the entire board. It mainly provides structural support and initial fire resistance. Substrate 1 not only has sufficient strength but also maintains its physical properties and integrity under high-temperature environments, ensuring stability in the event of a fire.

[0031] The fire-resistant layer 2 is located on the outer side of the substrate 1. This layer covers the entire outer surface of the substrate 1, further enhancing its fire resistance. The fire-resistant layer 2 is made of highly fire-resistant materials, which can extend the material's resistance time under extreme conditions and improve the overall safety factor of the building. This layer is tightly bonded to the surface of the substrate 1, ensuring that there are no gaps or weak points.

[0032] An insulation layer 3 is provided on the inner side of the substrate 1. The main purpose of this layer is to reduce heat transfer, maintain a stable indoor temperature, and save energy. The insulation layer 3 is in direct contact with the substrate 1, and its thickness is designed to take into account thermal resistance performance requirements and cost control. It is also made of environmentally friendly materials with good thermal insulation properties.

[0033] Elastic washers 4 are provided around the screw holes on the substrate 1. These washers are used to disperse and alleviate the stress caused by the screws, reducing the risk of damage to the substrate caused by concentrated forces generated during installation. The washers are at least 1 mm thick and are made of rubber or elastic plastic material that can withstand high temperatures and deformation, maintaining stable elasticity in any environment and effectively resisting stress accumulation caused by temperature differences or wall displacement.

[0034] The expansion-type fixing screw 5 passes through the pre-set screw holes on the elastic washer 4 and the base plate 1 to firmly install the entire fireproof insulation board onto the wall structure. This type of screw allows for a certain range of adjustment, so that the board can remain secure even with slight deformation. During installation, it is necessary to ensure that the expansion part is fully extended and fully fits against the wall to ensure stability and sealing.

[0035] This fireproof insulation board addresses a problem inherent in traditional construction methods: stress concentration caused by the use of fixing screws during installation can easily lead to cracking of the board. By introducing a specially designed elastic gasket 4 and its specific material selection, the board's ability to withstand localized high stress is significantly improved. Furthermore, the elastic gasket 4 continuously protects the substrate 1 from excessive pressure even with minor deformations caused by changes in ambient temperature, and to some extent compensates for potential cracking caused by the slow deformation of the wall itself. Therefore, this improvement not only enhances system stability but also indirectly improves the overall quality and effectiveness of the fire barrier.

[0036] In one embodiment, see specific reference. Figure 1 The fireproof and heat-insulating board for exterior walls of this application has a raised structure 6 on one side of its base plate 1, which can match the grooves on the wall. The raised structure 6 effectively reduces stress concentration at the fixing point of the fixing screw by increasing the contact area between the base plate 1 and the wall. The presence of the raised structure 6 not only helps to improve the overall stability of the connection between the base plate 1 and the wall, but also significantly reduces various adverse conditions caused by stress concentration after screw installation.

[0037] Specifically, this special protruding structure can be formed by treating the edges or surface of the substrate 1 during the manufacturing process. Its shape can be a series of spaced-apart small protrusions or a continuous and evenly distributed series of ridges, ensuring good alignment with the pre-set grooves in the wall while maintaining overall flatness and aesthetics. For example, the protruding structure 6 can be manufactured using die stamping, casting, or other precision forming processes, ensuring that the protruding portion accurately embeds into the corresponding groove in the wall during installation. This method structurally solves the problems that may arise from relying solely on screw fixing, providing a new technical approach for the stability and durability of building exterior walls.

[0038] In one embodiment, the fireproof layer 2 of the fireproof insulation board for exterior walls of this application adopts a multi-layer composite material structure. Specifically, the fireproof layer 2 includes two core components: a layer of expanded graphite and a layer of ceramic fiber 7 (see...). Figure 2 These two layers of material are firmly bonded together using a special processing technique, forming a barrier with highly efficient fireproofing. Expanded graphite exhibits excellent high-temperature stability, rapidly expanding to form a sealing gasket when the temperature rises sharply; while the ceramic fiber layer 7 further enhances the overall heat resistance and mechanical strength with its unique thermal insulation properties. This design automatically compensates for any minor gaps that may appear when the wall experiences temperature changes or is affected by external physical deformation, thus preventing damage caused by stress imbalances within the board.

[0039] Specifically, pre-cut ceramic fibers and expanded graphite materials can be prepared first, and then stacked alternately in a specific order to achieve the required thickness. Next, a high-temperature curing adhesive or a pressing method is used to tightly bond the two together into a robust, integral unit. This unit is then adhered to the outer surface of substrate 1 using a special process, forming a continuous, uninterrupted fire-resistant protective layer. Furthermore, during installation, it is essential to ensure that the bonding surface between the composite material and substrate 1 is sufficiently smooth and free of air bubbles to guarantee a good bond.

[0040] In one embodiment, the insulation layer 3 of the fireproof insulation board for exterior walls of this application has a microporous structure 8 inside, which can automatically adjust its density according to temperature changes. This characteristic is achieved through the thermal response properties of the microporous material itself. At low temperatures, the microporous structure 8 is relatively closed and its volume decreases; when the temperature rises, the air or other fillers in the microporous structure 8 expand, causing the micropores to enlarge, thereby reducing its density. This method effectively reduces internal stress caused by external temperature fluctuations, thereby further enhancing the insulation effect and preventing the board from being damaged by thermal expansion and contraction in environments with large temperature differences. The insulation layer 3 is disposed on the inner side of the substrate 1, directly contacting the side of the object requiring insulation, which can ensure the effective transfer of insulation performance.

[0041] In one specific embodiment, the microporous structure 8 is composed of materials with high elasticity and temperature responsiveness, which are uniformly distributed within the insulation layer 3 to form a stable three-dimensional network structure. For example, novel phase change materials such as polyurethane foam can be used. These materials undergo phase changes at different temperatures, thereby adjusting the openness and size of the micropores. Furthermore, by optimizing the material formulation and foaming process parameters, such as controlling the number, distribution density, and size of pores, the physicochemical properties of the micropores can be precisely adjusted during production to meet actual needs. This microporous structure 8 design does not require additional equipment for automatic density adjustment; instead, it relies on the physical properties of the selected material itself. The mounting position remains in close contact with the inner side of the substrate 1, allowing the insulation and stress adjustment functions to be fully effective.

[0042] In one embodiment, the distance between the elastic washer 4 and the fixing screw hole of the fireproof insulation board for exterior walls in this application is set to be no less than 2 mm. This design ensures that during the fixing process, the elastic washer 4 can evenly distribute the force from the fixing screw on the board surface, avoiding localized deformation or damage to the board due to stress concentration. This specific distance range not only helps the elastic washer 4 to perform optimally but also ensures the safety and reliability of the fixing process. Specifically, when the fixing screw passes through the hole in the substrate 1 and connects to the wall, it does not exert excessive local pressure on nearby materials, thus keeping the board flat and stable.

[0043] The elastic gasket 4 is made of high-temperature resistant rubber or elastic plastic and is installed around the fixing screw holes of the substrate 1. In actual operation, the position and size of the elastic gasket 4 can be precisely controlled by adjusting the mold to ensure a distance of at least 2 mm between them. This arrangement allows the fixing components and the elastic gasket 4 to function in harmony, ensuring both secure fixing and preventing damage to the board. Furthermore, this configuration is also applicable to fireproof insulation boards of different sizes and types, demonstrating good versatility. For example, during installation, the operator should first accurately attach the elastic gasket 4 with appropriate spacing markings to the designated area of ​​the substrate 1, and then use the expansion-type fixing screw 5 to pierce through the pre-drilled through holes to securely fix the fireproof insulation board. The specific implementation method can be selected based on the most suitable tools and methods according to the on-site construction conditions.

[0044] In one embodiment, such as Figure 3 As shown, the elastic gaskets 4 of a fireproof insulation board for exterior walls according to this application are disposed around the fixing screw holes on the substrate 1. These elastic gaskets 4 have multiple radially distributed micro-grooves 9 on their surfaces. The design of these micro-grooves 9 allows for slight deformation of the elastic gaskets 4 during screw tightening. The purpose of this design is to better distribute the screw pressure, thereby further reducing the risk of board strain.

[0045] Specifically, the micro-grooves 9 are arranged radially outward from the center of the elastic gasket 4. Their presence allows the gasket to deform within a certain range without losing its functional integrity when subjected to external pressure. This design effectively disperses the localized pressure applied to the fixing screws, distributing the force originally concentrated at one point to a larger area and reducing the localized stress that may occur in the substrate 1 and other structural layers. Therefore, during actual construction and subsequent use, the entire fireproof insulation board for the exterior wall can more evenly bear the pressure transmitted by the fixing screws, ensuring its stability and safety.

[0046] For example, the elastic gasket 4 can be made of a flexible and malleable material during the production process, ensuring that it can be easily opened and maintain the stability of the aforementioned grooves. During assembly or installation, the operator only needs to tighten the expansion-type fixing screw 5 normally to naturally trigger the radial grooves on the elastic gasket 4 to produce appropriate deformation. In this way, pressure is effectively distributed while the screw is tightened.

[0047] Continue to refer to Figure 3 In one embodiment, one of the design features of the fireproof insulation board for exterior walls of this application is the addition of an anti-slip coating 10 located between the substrate 1 and the elastic pad 4. This anti-slip coating 10 can significantly increase the friction between the substrate 1 and the elastic pad 4, thereby preventing the elastic pad 4 from sliding or misaligning due to external stress, further ensuring the overall stability of the structure. This anti-slip coating 10 design is not only suitable for fireproof insulation boards for building exterior walls, but also effectively improves the problems of easy sliding and detachment during the use of traditional products.

[0048] The application of the anti-slip coating 10 is specifically reflected in two key areas: First, the anti-slip coating 10 is directly laid on the surface of the substrate 1, adjacent to the elastic pad 4. Second, during installation, the elastic pad 4 ensures its position is fixed by tightly adhering to the anti-slip coating 10. To achieve the best results, the anti-slip coating 10 is made of materials with good adhesion and durability, such as specially formulated wear-resistant rubber coatings or epoxy resin materials. These materials not only enhance the connection strength between the substrate 1 and the elastic pad 4, but also withstand the impact of complex outdoor weather conditions.

[0049] Specifically, the surface of substrate 1 can first be properly cleaned and leveled to ensure no impurities or dust residue remain, thereby improving the adhesion of the anti-slip coating 10. Then, a layer of the selected anti-slip material is evenly applied, and after drying and curing, the elastic pad 4 can be installed. This not only avoids deviations during construction but also provides more reliable connection performance during subsequent use.

[0050] In one embodiment, the thickness of the substrate 1 of the fireproof insulation board for exterior walls in this application is more than five times the total thickness of the fireproof layer 2 and the insulation layer 3. This feature ensures that the substrate 1 can withstand greater mechanical stress during installation and fixation, and maintain structural integrity and stability under changes in the external environment. By setting the substrate 1 to have a higher relative thickness, this design can not only effectively enhance the overall rigidity and strength of the board, but also ensure that even if external forces or temperature changes cause a certain degree of deformation, the internal layers will not be damaged, allowing the insulation layer 3 and the fireproof layer 2 to maintain excellent physical properties for a long time.

[0051] In one embodiment, such as Figure 4 As shown, the head of the expansion-type fixing screw 5 of the fireproof insulation board for exterior walls of this application is provided with a reinforcing rib 11. The part of the reinforcing rib 11 that contacts the elastic washer 4 has a rough surface, thereby effectively improving the bonding force between the two and preventing displacement or loosening under long-term stress.

[0052] The design of the reinforcing rib 11 significantly enhances the bonding stability between the expansion bolt and the elastic washer 4. The roughened reinforcing rib 11 ensures a more stable installation, thus maintaining the integrity of the overall system during practical use. Furthermore, this design allows the fixing system to maintain high bonding strength and resistance to displacement under various environmental conditions.

[0053] The reinforcing rib 11 is located on the outer periphery of the head of the fixing screw, and the entire structure is directly nested in the corresponding hole on the base plate 1, so that the reinforcing rib 11 can fit tightly against the elastic washer 4. The reinforcing rib 11 and the fixing screw are an integral structure, ensuring that they are not easy to fall off and providing better mechanical properties.

[0054] For example, a wear-resistant material with a good coefficient of friction and adhesion can be selected first to make the surface of the reinforcing rib 11. For instance, surface treatment processes such as sandblasting or etching can be used to create sufficient roughness to increase contact friction. Secondly, during assembly, it is essential to ensure that the fixing screws can smoothly pass through the center of the elastic washer 4 and that the reinforcing rib 11 is fully engaged with the elastic washer 4 to achieve the desired effect. Specifically, the fixing screws can be screwed into the wall to a certain depth before tightening again to ensure that the reinforcing rib 11 is tightly fitted to the elastic washer 4 and does not slip.

[0055] In one embodiment, continue to refer to Figure 4One of the design features of the fireproof insulation board for exterior walls in this application is the reinforcing ribs 12 distributed around the screw holes. These reinforcing ribs 12 are located around the screw holes and are evenly distributed to enhance the structural strength of the area around the holes. This arrangement helps to disperse stress and avoid stress concentration around the screws, thereby effectively improving the reliability of the entire fixing system. The reinforcing ribs 12 are not separate additional components, but are integrally formed with the substrate 1 through a molding process, and are tightly integrated with the substrate 1 during the manufacturing process, ensuring the overall consistency and stability of the structure. Therefore, when the expansion screw 5 penetrates the elastic washer 4 and the screw hole on the substrate 1, the surrounding reinforcing ribs 12 can effectively share the applied pressure, ensuring safety and stability during the fixing process.

[0056] Specifically, in one embodiment, this feature can be achieved by optimizing the mold design. Specifically, multiple sets of micro-protrusions can be added to corresponding positions in the mold. When the substrate 1 material is injected into the mold and during the curing process, these protrusions naturally integrate into the structure of the substrate 1 to form reinforcing ribs 12, without the need for additional installation or fixing processes. This manufacturing method not only ensures the bonding strength between the reinforcing ribs 12 and the substrate 1, but also ensures the consistency and symmetry of the distribution of each reinforcing rib 12. For example, by adjusting the number, size, and distribution pattern of the protrusions, the optimal stress distribution effect can be achieved while maintaining a simple and efficient production process. Furthermore, the material of the reinforcing ribs 12 is the same as or similar to that of the substrate 1, ensuring that no material mismatch problem occurs under long-term use conditions, thus enhancing the overall structural durability and performance.

[0057] In one embodiment, a heat-insulating adhesive layer 13 is provided between the substrate 1 and the fireproof layer 2 of a fireproof insulation board for exterior walls according to this application (see [link]). Figure 2 After curing, this adhesive layer can form a strong and reliable connection between the two materials, with a certain degree of elasticity and buffering capacity, thereby effectively coping with the thermal expansion and contraction effect caused by temperature changes, preventing the substrate 1 and the fireproof layer 2 from peeling off under the influence of the external environment, and enhancing the stability of the overall structure.

[0058] The thermal insulation adhesive layer 13 is designed to fully consider the impact of changes in the external environment on the building panels. The cured adhesive not only firmly bonds the substrate 1 to the fireproof layer 2, but its unique physical properties also absorb and mitigate stress caused by thermal deformation. For example, the adhesive exhibits good fluidity and bonding strength at room temperature, ensuring a tight bond between layers, and maintains sufficient toughness without losing its effectiveness even at high temperatures. By selecting appropriate component ratios, this thermal insulation adhesive layer 13 ensures stable and reliable performance under various operating conditions.

[0059] Specifically, this property can be achieved through specific types of polymer-modified adhesives. These adhesives can form a solid interface with the required performance indicators through appropriate curing processes during construction, such as room temperature drying or heating to promote cross-linking reactions. After curing, they provide the aforementioned technical characteristics to fireproof insulation boards for exterior walls, namely, strong bonding and adaptability to thermal expansion and contraction, thereby improving the overall reliability of the product.

[0060] In one embodiment, the elastic gasket 4 of a fireproof insulation board for exterior walls of this application has a metal mesh support structure 14 embedded inside (see...). Figure 3 This improvement significantly enhances mechanical strength and shape stability while maintaining the functionality of the elastic gasket 4. Specifically, the elastic gasket 4 is typically positioned around the fixing screw holes on the substrate 1 to distribute and buffer the pressure and stress from the fixing screws, preventing stress concentration that could lead to deformation or breakage of the plate. The embedded metal mesh support structure 14 is evenly distributed within the elastic gasket 4, tightly bonded to the elastic material, but without adversely affecting its elasticity and deformation capacity.

[0061] The elastic gasket 4 has a thickness of not less than 1mm and is made of high-temperature resistant rubber or elastic plastic, materials that maintain stable performance even under high-temperature conditions. By embedding a metal mesh support structure 14 within the elastic gasket 4, the component's resistance to high stress is enhanced, ensuring it can return to its original shape even under strong external forces. Therefore, the entire system maintains stability and functionality even under strong external pressure, providing a more durable and reliable fixing effect and better protecting the fireproof insulation board from damage.

[0062] To avoid affecting the original dispersion and cushioning functions of the elastic gasket 4, the metal mesh support structure 14 is embedded in the form of a fine metal mesh. For example, this pre-formed metal mesh can be directly embedded into the elastic gasket 4 material through a molding process, ensuring its uniform distribution within the material. The installation position and method ensure that the metal mesh is located in the center of the elastic gasket 4, which enhances mechanical properties without altering its outer diameter or surface smoothness, while also ensuring a stable connection between it and the substrate 1 and other components, without affecting the overall assembly accuracy.

[0063] In actual operation, when this device is used, the expansion bolts can be passed through the screw holes on the elastic washer 4 and the base plate 1, and then screwed into the wall to firmly fix the fireproof insulation board to the wall. Because the elastic washer 4 is at least 1mm thick and made of high-temperature resistant rubber or elastic plastic, it can maintain its elasticity and deformation capacity under temperature changes or wall deformation, effectively dispersing and buffering the stress from the fixing bolts, preventing the board from cracking due to stress concentration. After installation, the fireproof layer 2 is located on the outside of the base plate 1, enhancing the fire resistance of the entire structure, while the insulation layer 3 is located on the inside of the base plate 1, providing good insulation. The overall design ensures that the fireproof insulation board for exterior walls not only effectively fixes to the wall but also provides reliable fireproof and insulation functions.

[0064] The exemplary systems and methods of the present invention have been specifically shown and described with reference to the above embodiments, which are merely examples of the best mode for implementing the systems and methods. Those skilled in the art will understand that various changes can be made to the embodiments of the systems and methods described herein without departing from the spirit and scope of the invention as defined in the appended claims when implementing the systems and / or methods.

Claims

1. A fireproof and heat-insulating board for exterior walls, characterized in that, include: base(1); Fireproof layer (2) is disposed on the outside of substrate (1); The insulation layer (3) is disposed on the inner side of the substrate (1); An elastic washer (4) is provided around the screw holes on the substrate (1); An expansion-type fixing screw (5) passes through the fixing screw hole on the elastic washer (4) and the base plate (1) to fix the fireproof insulation board to the wall; wherein There is a distance between the elastic pad (4) and the fixing screw hole, and a number of reinforcing ribs (12) are provided around the fixing screw hole. These reinforcing ribs (12) are evenly distributed around the screw hole. The elastic pad (4) is provided with a plurality of radially arranged micro-grooves (9); and An anti-slip coating (10) is provided between the elastic pad (4) and the substrate (1).

2. The fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: The substrate (1) has a raised structure (6) on one side, which matches the groove on the wall.

3. The fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: The fireproof layer (2) includes an expanded graphite layer and a ceramic fiber layer (7).

4. The fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: The insulation layer (3) has a microporous structure (8) inside.

5. A fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: The distance between the elastic gasket (4) and the fixing screw hole is not less than 2mm.

6. The fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: The thickness of the substrate (1) is more than 5 times the total thickness of the fireproof layer (2) and the heat insulation layer (3).

7. The fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: The head of the expansion-type fixing screw (5) is provided with a reinforcing rib (11), and the part of the reinforcing rib (11) that contacts the elastic washer (4) has a rough surface.

8. A fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: A heat-insulating adhesive layer (13) is provided between the substrate (1) and the fireproof layer (2).

9. A fireproof and heat-insulating board for exterior walls according to claim 1, characterized in that: The elastic pad (4) has a metal mesh support structure (14) embedded inside.

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