Flame-retardant heat-insulation waterproof plate for tunnel

Abstract

The utility model discloses a flame-retardant heat-insulating waterproof plate for a tunnel, which comprises a first isolation sand flame-retardant protective layer, a first embedded heat-insulating plate layer, an embedded waterproof plate layer, a second isolation sand flame-retardant protective layer and a second embedded heat-insulating plate layer, a first embedded type heat preservation and insulation plate layer is embedded in the upper surface of the embedded type waterproof plate layer, a first isolation sand flame-retardant protection layer is arranged on the upper surface of the first embedded type heat preservation and insulation plate layer, and a second embedded type heat preservation and insulation plate layer is embedded in the lower surface of the embedded type waterproof plate layer; and a second isolation sand flame-retardant protection layer is arranged on the lower surface of the second embedded heat preservation and insulation plate layer. The flame-retardant heat-insulation waterproof plate for the tunnel is simple in structure, ingenious in design and practical in function, and effectively solves the problems that a conventional waterproof material for the tunnel is poor in flame-retardant effect, fire spreading is likely to be caused, and the safety of passing personnel is threatened.

Description

Technical Field

[0001] This utility model relates to the field of waterproof boards, and in particular to a flame-retardant and heat-insulating waterproof board for tunnels. Background Technology

[0002] Conventional waterproofing materials for tunnels are primarily made of polymers such as polyethylene. Polyethylene has a low ignition point, continues to burn after the flame is removed, and produces a large amount of dripping material. Furthermore, it has rapid heat conduction and flame propagation, posing a significant safety risk in the semi-enclosed environment of a tunnel, easily causing fire to spread and threatening the safety of personnel. Existing conventional waterproofing materials for tunnels do not meet flame-retardant requirements. Therefore, developing a new type of flame-retardant, heat-insulating, and waterproof membrane for tunnels has become an urgent problem for those skilled in the art. Utility Model Content

[0003] The purpose of this invention is to provide a flame-retardant, heat-insulating, and waterproof membrane for tunnels, which solves the problem that conventional waterproof materials for tunnels have poor flame-retardant effects and are prone to causing fire to spread and threaten the safety of passersby.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a flame-retardant, heat-insulating, and waterproof membrane for tunnels, comprising a first flame-retardant protective layer of insulating sand, a first embedded heat-insulating board layer, an embedded waterproof membrane layer, a second flame-retardant protective layer of insulating sand, and a second embedded heat-insulating board layer. The first embedded heat-insulating board layer is embedded on the upper surface of the embedded waterproof membrane layer, and the first flame-retardant protective layer of insulating sand is disposed on the upper surface of the first embedded heat-insulating board layer. The second embedded heat-insulating board layer is embedded on the lower surface of the embedded waterproof membrane layer, and the second flame-retardant protective layer of insulating sand is disposed on the lower surface of the second embedded heat-insulating board layer.

[0006] Furthermore, the upper surface of the inlaid waterproof board layer is provided with a raised ridge, and the lower surface of the first inlaid thermal insulation board layer is provided with a groove that matches the raised ridge; the lower surface of the inlaid waterproof board layer is provided with a raised ridge, and the upper surface of the second inlaid thermal insulation board layer is provided with a groove that matches the raised ridge.

[0007] Furthermore, a first hot melt adhesive layer is provided between the upper surface of the first embedded thermal insulation board layer and the first isolation sand flame retardant protective layer; a second hot melt adhesive layer is provided between the lower surface of the second embedded thermal insulation board layer and the second isolation sand flame retardant protective layer.

[0008] Furthermore, the first and second isolation sand flame-retardant protective layers use washed sand with a mesh size of 40 to 70.

[0009] Furthermore, the thickness of the first and second isolation sand flame-retardant protective layers is 0.4 to 0.6 mm.

[0010] Furthermore, the first and second hot melt adhesive layers are made of hot melt adhesive and have a thickness of 0.3 to 0.5 mm.

[0011] Furthermore, the first and second embedded thermal insulation board layers are made of perlite thermal insulation board with a thickness of 1.5 to 2 mm.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] The first and second flame-retardant protective layers of this utility model's flame-retardant, heat-insulating, and waterproof tunnel membrane are made of 40-70 mesh washed sand, which has excellent heat insulation and flame-retardant properties. The washed sand effectively prevents the spread of flames on its surface and isolates the flames from burning. When the flames continue to burn, the hot melt adhesive of this utility model's flame-retardant, heat-insulating, and waterproof tunnel membrane will lose its bonding effect with the embedded heat insulation layer, causing the flames to detach from the waterproof membrane and preventing further combustion. The embedded heat insulation layer of this utility model's flame-retardant, heat-insulating, and waterproof tunnel membrane hinders the continued transfer of heat. It uses expanded perlite heat insulation board, which integrates heat insulation, heat insulation, and waterproof functions. Its inorganic material itself has good fire resistance, with a fire resistance temperature of up to 1100 degrees Celsius. Its high density porosity reduces convective heat transfer, slows down the temperature transfer of the intermediate embedded waterproof membrane layer, and prevents its combustion. In summary, this utility model of flame-retardant, heat-insulating, and waterproof tunnel membrane has a simple structure, ingenious design, and practical function. It effectively solves the problem that conventional waterproof tunnel materials have poor flame-retardant properties, which can easily cause fire to spread and threaten the safety of passersby. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] Figure 1 This is a cross-sectional view of the flame-retardant, heat-insulating, and waterproof membrane for tunnels according to this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. First insulating sand flame-retardant protective layer; 2. First hot melt adhesive bonding layer; 3. First embedded thermal insulation board layer; 4. Embedded waterproof board layer; 5. Second embedded thermal insulation board layer; 6. Second hot melt adhesive bonding layer; 7. Second insulating sand flame-retardant protective layer. Detailed Implementation

[0017] like Figure 1As shown, a flame-retardant, heat-insulating, and waterproof membrane for tunnels includes a first flame-retardant protective layer 1 made of insulating sand, a first embedded heat-insulating board layer 3, an embedded waterproof membrane layer 4, a second flame-retardant protective layer 7 made of insulating sand, and a second embedded heat-insulating board layer 5. The first embedded heat-insulating board layer 3 is embedded on the upper surface of the embedded waterproof membrane layer 4. The first flame-retardant protective layer 1 made of insulating sand is disposed on the upper surface of the first embedded heat-insulating board layer 3. A first hot melt adhesive layer 2 is disposed between the upper surface of the first embedded heat-insulating board layer 3 and the first flame-retardant protective layer 1 made of insulating sand.

[0018] The lower surface of the embedded waterproof board layer 4 is inlaid with a second embedded thermal insulation board layer 5, and the lower surface of the second embedded thermal insulation board layer 5 is provided with a second insulating sand flame-retardant protective layer 7. A second hot melt adhesive layer 6 is provided between the lower surface of the second embedded thermal insulation board layer 5 and the second insulating sand flame-retardant protective layer 7.

[0019] The upper surface of the inlaid waterproof board layer 4 is provided with a raised ridge, and the lower surface of the first inlaid thermal insulation board layer 3 is provided with a groove that matches the raised ridge; the lower surface of the inlaid waterproof board layer 4 is provided with a raised ridge, and the upper surface of the second inlaid thermal insulation board layer 5 is provided with a groove that matches the raised ridge.

[0020] The first and second flame-retardant protective layers 1 and 7 are made of washed sand with a mesh size of 40 to 70. The thickness of the first and second flame-retardant protective layers 1 and 7 is 0.4 to 0.6 mm.

[0021] The first hot melt adhesive layer 2 and the second hot melt adhesive layer 6 are made of hot melt adhesive and have a thickness of 0.3 to 0.5 mm.

[0022] The first embedded thermal insulation board layer 3 and the second embedded thermal insulation board layer 5 are made of perlite thermal insulation board with a thickness of 1.5 to 2 mm.

[0023] The working principle of this utility model is as follows:

[0024] The flame-retardant, heat-insulating, and waterproof tunnel insulation board of this utility model consists of, from top to bottom, a first isolation sand flame-retardant protective layer 1, a first hot melt adhesive bonding layer 2, a first embedded heat insulation board layer 3, an embedded waterproof board layer 4, a second embedded heat insulation board layer 5, a second hot melt adhesive bonding layer 6, and a second isolation sand flame-retardant protective layer 7.

[0025] The flame-retardant protective layer uses washed sand of 40-70 mesh, which has excellent heat insulation and flame-retardant properties. The washed sand effectively prevents the spread of flames on its surface and isolates the flames from combustion.

[0026] If the flame continues to burn, the hot melt adhesive will lose its bonding effect with the embedded thermal insulation board, causing the flame to detach from the waterproof membrane and preventing it from continuing to burn.

[0027] Meanwhile, the use of the lower layer of embedded thermal insulation board hinders further heat transfer. It utilizes expanded perlite thermal insulation board, integrating insulation, heat insulation, and waterproofing functions. Its inorganic material itself has excellent fire resistance, with a fire resistance temperature exceeding 1100 degrees Celsius. Its high density-to-porosity reduces convective heat transfer, slowing down temperature transfer in the middle embedded waterproof board layer and preventing combustion. Simultaneously, it possesses good compressive and flexural strength, with a thickness between 1.5-2mm, exhibiting a certain degree of bending resistance while being resistant to cracking.

[0028] Due to the material differences between the embedded waterproof layer 4 and the embedded thermal insulation layer, the bonding is not strong. Therefore, a physical embedding method is adopted, in which the groove of the embedded thermal insulation layer and the protrusion of the embedded waterproof layer are combined and embedded securely.

[0029] The embedded waterproof layer 4 is made from ethylene-vinyl acetate polymer (EVA) resin, linear low-density polyethylene (LLDPE) resin, metal hydroxide intumescent flame retardant, and antioxidant (pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]) through extrusion. If the flame burns through the embedded thermal insulation layer, the intumescent flame retardant in the embedded waterproof layer 4 will form a regular and dense intumescent carbon layer, which has excellent thermal stability and good flame retardant properties, further preventing the flame from continuing to burn. At the same time, its ethylene-vinyl acetate polymer (EVA) resin and linear low-density polyethylene (LLDPE) resin have good waterproof performance and excellent tensile strength and elongation, ensuring the physical and mechanical properties of the waterproof product.

[0030] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A flame-retardant, heat-insulating, and waterproof membrane for tunnels, characterized in that: It includes a first insulating sand flame-retardant protective layer (1), a first embedded thermal insulation board layer (3), an embedded waterproof board layer (4), a second insulating sand flame-retardant protective layer (7), and a second embedded thermal insulation board layer (5). The first embedded thermal insulation board layer (3) is embedded on the upper surface of the embedded waterproof board layer (4). The first insulating sand flame-retardant protective layer (1) is provided on the upper surface of the first embedded thermal insulation board layer (3). The second embedded thermal insulation board layer (5) is embedded on the lower surface of the embedded waterproof board layer (4). The second insulating sand flame-retardant protective layer (7) is provided on the lower surface of the second embedded thermal insulation board layer (5).

2. The flame-retardant, heat-insulating, and waterproof membrane for tunnels according to claim 1, characterized in that: The upper surface of the inlaid waterproof board layer (4) is provided with a protruding ridge, and the lower surface of the first inlaid thermal insulation board layer (3) is provided with a groove that matches the protruding ridge; the lower surface of the inlaid waterproof board layer (4) is provided with a protruding ridge, and the upper surface of the second inlaid thermal insulation board layer (5) is provided with a groove that matches the protruding ridge.

3. The flame-retardant, heat-insulating, and waterproof membrane for tunnels according to claim 1, characterized in that: A first hot melt adhesive layer (2) is provided between the upper surface of the first embedded heat insulation board layer (3) and the first isolation sand flame retardant protective layer (1); a second hot melt adhesive layer (6) is provided between the lower surface of the second embedded heat insulation board layer (5) and the second isolation sand flame retardant protective layer (7).

4. The flame-retardant, heat-insulating, and waterproof membrane for tunnels according to claim 1, characterized in that: The first isolation sand flame retardant protective layer (1) and the second isolation sand flame retardant protective layer (7) use water-washed sand with a mesh size of 40 to 70.

5. The flame-retardant, heat-insulating, and waterproof membrane for tunnels according to claim 4, characterized in that: The thickness of the first isolation sand flame retardant protective layer (1) and the second isolation sand flame retardant protective layer (7) is 0.4 to 0.6 mm.

6. The flame-retardant, heat-insulating, and waterproof membrane for tunnels according to claim 3, characterized in that: The first hot melt adhesive layer (2) and the second hot melt adhesive layer (6) are made of hot melt adhesive and have a thickness of 0.3 to 0.5 mm.

7. The flame-retardant, heat-insulating, and waterproof membrane for tunnels according to claim 1, characterized in that: The first embedded thermal insulation board layer (3) and the second embedded thermal insulation board layer (5) are made of perlite thermal insulation board with a thickness of 1.5 to 2 mm.

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