Composite fireproof plate

Abstract

The utility model discloses a composite fireproof plate, which relates to the technical field of building boards and comprises a calcium silicate fireproof plate layer, a nano-porous silicon plate layer and a bonding layer, the bonding layer is arranged between the calcium silicate fireproof plate layer and the nano-porous silicon plate layer, and the calcium silicate fireproof plate layer and the nano-porous silicon plate layer are bonded through the bonding layer. According to the composite fireproof plate, the safety of a system can be improved; the construction and installation period can be shortened, and the strength of a main structure is guaranteed; the processing is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of building boards, in particular to a composite fireproof board. Background Art

[0002] People usually think that the concrete structures of tunnels and underground projects are non-combustible and that fire prevention issues do not need to be considered. However, when a fire occurs in a concrete structure and the ambient temperature rises to around 600°C, the strength of the concrete structure will drop by about 50%. As the fire continues, the concrete will dehydrate, causing the concrete structure to peel off and spall off from the steel bars, which can easily cause explosions and endanger the service life of the tunnel.

[0003] Currently, two common fire protection solutions for the roofs and side walls of tunnels and underground projects are used. The first involves using a double layer of 12mm calcium silicate fireproofing board, which is installed separately in two separate steps and mechanically anchored to the concrete structure with staggered joints. The second involves using a single layer of 24mm or 25mm thick calcium silicate fireproofing board, which is mechanically anchored to the concrete structure. Existing fire protection solutions present several challenges. Both solutions utilize calcium silicate fireproofing board, which weighs approximately 25kg per square meter and is inherently heavy. Consequently, the mechanically anchored expansion pins are prone to loosening and falling out over time. When used in underground tunnels, high-speed traffic creates negative wind pressure, which in turn exerts a certain amount of tension on the roof and side wall fireproofing board, further increasing the likelihood of falling out and posing a significant safety hazard. On the other hand, the first solution uses a processing method of anchoring two layers of calcium silicate fireproof boards separately. It has more installation steps and a long cycle. The amount of expansion nails used for mechanical anchoring is large, which will bring certain risks to the strength of the concrete structure layer. The second solution uses a single layer of calcium silicate fireproof board. In order to ensure the fireproof effect, the single layer of calcium silicate fireproof board needs to be thicker, which makes on-site cutting, opening holes and processing into special shapes difficult. Utility Model Content

[0004] The purpose of the utility model is to provide a composite fireproof board to solve the problems existing in the prior art, improve the safety of the system; shorten the construction and installation period, ensure the strength of the main structure in the event of fire; and facilitate processing.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a composite fireproof board, comprising a calcium silicate fireproof board layer, a nanoporous silicon board layer and an adhesive layer, wherein the adhesive layer is arranged between the calcium silicate fireproof board layer and the nanoporous silicon board layer, and the calcium silicate fireproof board layer and the nanoporous silicon board layer are bonded to each other through the adhesive layer.

[0007] Preferably, the adhesive layer is a high-temperature resistant glue layer.

[0008] Preferably, the high-temperature resistant temperature of the high-temperature resistant glue layer is greater than or equal to 350 °C.

[0009] Preferably, the high-temperature resistant temperature of the nano-porous silicon plate layer is greater than or equal to 650 °C.

[0010] Preferably, the high-temperature resistant temperature of the calcium silicate fireproof board layer is greater than or equal to 1000 °C.

[0011] Preferably, the thickness of the nano-porous silicon plate layer is 5 mm to 10 mm.

[0012] Preferably, the thickness of the calcium silicate fireproof board layer is 8 mm to 15 mm.

[0013] Preferably, the high-temperature resistant temperature of the high-temperature resistant glue layer is 350 °C.

[0014] Preferably, the high-temperature resistant temperature of the nano-porous silicon plate layer is 650 °C.

[0015] Preferably, the high-temperature resistant temperature of the calcium silicate fireproof board layer is 1000 °C.

[0016] The present utility model has achieved the following technical effects compared with the prior art:

[0017] The present utility model provides a composite fireproof board, comprising a calcium silicate fireproof board layer, a nano-porous silicon plate layer and an adhesive layer. The adhesive layer is disposed between the calcium silicate fireproof board layer and the nano-porous silicon plate layer, and the calcium silicate fireproof board layer and the nano-porous silicon plate layer are adhered through the adhesive layer. The nano-porous silicon plate layer has the characteristics of light weight and high temperature resistance. The nano-porous silicon plate layer adopted by the present utility model is compounded with the calcium silicate fireproof board layer, reducing the weight per square meter of the composite fireproof board, thereby reducing the risk of the fireproof board falling off and improving the safety of application. The calcium silicate fireproof board layer and the nano-porous silicon plate layer of the present utility model are connected by an adhesive method. Compared with the method of separately anchoring the double-layer calcium silicate fireproof boards, it is convenient for processing, has a high production efficiency, and reduces the usage amount of expansion nails, which is beneficial to ensuring the strength of the main structure (such as a concrete structure) in the case of a fire. Since the present utility model adopts a double-layer structure, compared with a single-layer fireproof structure, the thickness of each layer structure of the present utility model can be set smaller, so as to facilitate cutting and punching of the single-layer fireproof structure (calcium silicate fireproof board layer or nano-porous silicon plate layer), facilitate the special-shaped processing of the single-layer fireproof structure, and reduce the processing difficulty. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the composite fireproof board provided by the present invention;

[0020] In the figure: 100, composite fireproof board; 1, calcium silicate fireproof board layer; 2, nano-porous silicon board layer; 3, bonding layer. Specific implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide a composite fireproof board to solve the problems existing in the prior art, which can improve the safety of the system; can shorten the construction and installation period and ensure the strength of the main structure in case of fire; and is convenient for processing.

[0023] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0024] Such as Figure 1As shown in the figure, the present utility model provides a composite fireproof board 100, which includes a calcium silicate fireproof board layer 1, a nano-porous silicon board layer 2, and an adhesive layer 3. The adhesive layer 3 is disposed between the calcium silicate fireproof board layer 1 and the nano-porous silicon board layer 2, and the calcium silicate fireproof board layer 1 and the nano-porous silicon board layer 2 are bonded through the adhesive layer 3. The nano-porous silicon board layer 2 has the characteristics of being lightweight and high-temperature resistant. The nano-porous silicon board layer 2 adopted in the present utility model is compounded with the calcium silicate fireproof board layer 1, reducing the weight per square meter of the composite fireproof board 100, thereby reducing the risk of the fireproof board falling off and improving the safety of the system. The calcium silicate fireproof board layer 1 and the nano-porous silicon board layer 2 of the present utility model are pre-connected by bonding. During installation, the composite fireproof board 100 is integrally installed on the main structure (such as a concrete structure). Compared with the method of separately anchoring double-layer calcium silicate fireproof boards, only one installation process is required to complete the installation, greatly shortening the construction installation period and reducing the usage of expansion nails, which is beneficial to ensuring the strength of the main structure in case of a fire; the bonding method is convenient for processing and is beneficial to improving production efficiency. Since the present utility model adopts a double-layer structure, compared with a single-layer fireproof structure, the thickness of each layer structure of the present utility model can be set smaller, so as to facilitate cutting and punching of the single-layer fireproof structure (the calcium silicate fireproof board layer 1 or the nano-porous silicon board layer 2), facilitating the special-shaped processing of the single-layer fireproof structure and reducing the processing difficulty.

[0025] When the composite fireproof board 100 of the present utility model is installed, the nano-porous silicon board layer 2 is used on the side facing the main structure.

[0026] In the present utility model, the adhesive layer 3 is a high-temperature resistant glue layer to ensure the connection strength between the calcium silicate fireproof board layer 1 and the nano-porous silicon board layer 2.

[0027] In the present utility model, the temperature resistance of the high-temperature resistant glue layer is greater than or equal to 350 °C.

[0028] In the present utility model, the temperature resistance of the nano-porous silicon board layer 2 is greater than or equal to 650 °C.

[0029] In the present utility model, the temperature resistance of the calcium silicate fireproof board layer 1 is greater than or equal to 1000 °C.

[0030] In the present utility model, the thickness of the nano-porous silicon board layer 2 is 5 mm to 10 mm.

[0031] In the present utility model, the thickness of the calcium silicate fireproof board layer 1 is 8 mm to 15 mm.

[0032] As a preferred embodiment, the thickness of the nano-porous silicon plate layer 2 is 10 mm, and the thickness of the calcium silicate fireproof board layer 1 is 10 mm. The composite fireproof board 100 is obtained by compounding the nano-porous silicon plate layer 2 and the calcium silicate fireproof board layer 1, and the thickness of the composite fireproof board 100 can be reduced to 20 mm, further achieving the technical effect of weight reduction.

[0033] As a preferred embodiment, the heat-resistant temperature of the heat-resistant glue layer is 350 °C.

[0034] As a preferred embodiment, the heat-resistant temperature of the nano-porous silicon plate layer 2 is 650 °C.

[0035] As a preferred embodiment, the heat-resistant temperature of the calcium silicate fireproof board layer 1 is 1000 °C.

[0036] The main production process of the composite fireproof board 100 of the present utility model is as follows:

[0037] Step 1: Clean the calcium silicate fireproof board layer 1 to make its surface dust-free;

[0038] Step 2: Use a large-scale roller coater to evenly coat the heat-resistant glue layer on the surfaces of the calcium silicate fireproof board layer 1 and the nano-porous silicon plate layer 2 respectively, and bond the two;

[0039] Step 3: Press the compounded composite fireproof board 100 with a press of more than 500 KG for 72 hours to enable the two materials to be fully bonded together;

[0040] Step 4: Conduct quality inspection and packaging.

[0041] The composite fireproof board 100 of the present utility model is preferably used for fire protection of the top and side walls of tunnels and underground projects. During application, the 10-mm-thick nano-porous silicon plate layer 2 (heat-resistant at 650 °C) and the 10-mm-thick calcium silicate fireproof board layer 1 (heat-resistant at 1000 °C) can be compounded using glue with a heat-resistant temperature of 350 °C. The specific product parameters of the compounded fireproof board are as follows: 1. Fire protection grade: Class A non-combustible; 2. Thermal conductivity ≤ 0.023 W(m.k); 3. Weight per square meter ≤ 18 KG; 4. Average flexural strength ≥ 6 Mpa.

[0042] Compared with the fireproof boards in the prior art, the composite fireproof board 100 of the present utility model can reduce the thickness, lower the weight per square meter, and improve work efficiency. The specific comparison table is as follows:

[0043]

[0044] Specific examples are used in this utility model to elaborate on the principle and implementation manner of this utility model. The description of the above embodiments is only used to help understand the method and its core idea of this utility model; at the same time, for those of ordinary skill in the art, according to the idea of this utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on this utility model.

Claims

1. A composite fireproof board, characterized in that: It includes a calcium silicate fireproof board layer, a nano-porous silicon board layer and an adhesive layer. The adhesive layer is disposed between the calcium silicate fireproof board layer and the nano-porous silicon board layer, and the calcium silicate fireproof board layer and the nano-porous silicon board layer are adhered through the adhesive layer.

2. The composite fireproof board according to claim 1, characterized in that: The adhesive layer is a high-temperature resistant glue layer.

3. The composite fireproof board according to claim 2, characterized in that: The temperature resistance of the high-temperature resistant glue layer is greater than or equal to 350 °C.

4. The composite fireproof board according to claim 1, characterized in that: The temperature resistance of the nano-porous silicon board layer is greater than or equal to 650 °C.

5. The composite fireproof board according to claim 1, wherein: The temperature resistance of the calcium silicate fireproof board layer is greater than or equal to 1000 °C.

6. The composite fireproof board according to any one of claims 1-5, characterized in that: The thickness of the nano-porous silicon board layer is 5 mm to 10 mm.

7. The composite fireproof board according to any one of claims 1-5, characterized in that: The thickness of the calcium silicate fireproof board layer is 8 mm to 15 mm.

8. The composite fireproof board according to claim 3, characterized in that: The temperature resistance of the high-temperature resistant glue layer is 350 °C.

9. The composite fireproof board according to claim 4, characterized in that: The temperature resistance of the nano-porous silicon board layer is 650 °C.

10. The composite fireproof board according to claim 5, wherein: The temperature resistance of the calcium silicate fireproof board layer is 1000 °C.

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