A fireproof composite aluminum panel for building
By combining a passive flame-retardant core layer and active fire-resistant components into the aluminum plate, the problem of insufficient fire resistance of traditional aluminum plates is solved, achieving both high-efficiency flame retardancy and aesthetically pleasing installation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU CAIFA ALUMINUM
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional aluminum plates have poor fire resistance, are easily melted, and spread fire rapidly. In high-rise buildings and densely populated areas, they can easily form combustion channels along the cross-section, leading to fire resistance failure.
It adopts a combination design of passive flame-retardant core layer and active fire protection component. The flame-retardant core layer contains ammonium polyphosphate, magnesium hydroxide and rock wool fiber. The active fire protection component is filled with perfluorohexanone fire extinguishing agent. The gas is released through the sealing sheet to form a gaseous barrier. The edge connection structure uses expansion sealing strip to block the spread of flame.
It achieves high-efficiency fire resistance of aluminum plates, blocks the spread of flames along the joints, improves the aesthetics of installation and connection reliability, and extends service life.
Smart Images
Figure CN224578952U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building materials technology, specifically to a fireproof composite aluminum plate for buildings. Background Technology
[0002] In the construction industry, aluminum sheets are widely used due to their advantages such as lightweight, high strength, and corrosion resistance. However, traditional aluminum sheets have poor fire resistance, are prone to melting when exposed to fire, and can cause fires to spread, posing serious safety hazards. Especially in high-rise buildings and densely populated areas, traditional aluminum sheets cannot effectively block the fire source in the event of a fire, leading to rapid fire spread and greatly hindering evacuation and firefighting efforts. Currently, while some fire-resistant aluminum sheets possess a certain degree of fire resistance, they often use a single flame-retardant layer (such as ammonium polyphosphate or rock wool) and lack an active fire protection mechanism. When fire spreads to the edges or joints of the sheet, it can easily form combustion channels along the cross-section, causing overall fire resistance to fail. Summary of the Invention
[0003] In order to solve the problems of the prior art, this utility model provides a fireproof composite aluminum plate for buildings.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a fireproof composite aluminum plate for buildings, comprising a surface layer, a flame-retardant core layer, a bottom layer, an upper adhesive layer, a lower adhesive layer, an active fireproof component, and an edge connection structure; The surface layer is fixedly connected to the flame-retardant core layer through an upper adhesive layer, the flame-retardant core layer is fixedly connected to the bottom layer through a lower adhesive layer, the active fireproof component is embedded inside the flame-retardant core layer, and the edge connection structure is provided on both sides of the aluminum plate. The active fire protection component includes a storage box and a sealing sheet sealed at the opening of the storage box. The storage box contains perfluorohexanone extinguishing agent. The sealing sheet is made of hot-melt material. Multiple active fire protection components are provided and are evenly embedded inside the flame-retardant core layer.
[0005] Furthermore, the edge connection structure includes a first connection part and a second connection part; The left end of the top layer is bent vertically downwards in sequence to form bending part 1, bending vertically to the left to form bending part 2, bending downwards at 180° to form bending part 3, bending vertically downwards to form bending part 4, bending vertically to the left to form bending part 5, bending vertically downwards to form bending part 6, and bending to the right to form bending part 7. The angle between bending part 6 and bending part 7 is greater than 90°. The left end of the bottom layer is bent vertically upwards in sequence to form bending part 8 and bending vertically to the left to form bending part 9. A gap is left between bending part 2 and bending part 3 to match bending part 9. Bending part 9 is inserted into the gap and fixedly connected to the top layer with glue. The connecting part 1 includes bending part 2, bending part 3, bending part 4, bending part 5, bending part 6, bending part 7, bending part 8, and bending part 9. The right end of the surface layer is bent vertically downwards to form bending section 10, bending vertically to the right to form bending section 11, bending vertically downwards to form bending section 12, bending vertically to the left to form bending section 13, bending vertically downwards to form bending section 14, bending vertically to the right to form bending section 15, bending vertically upwards to form bending section 16, bending vertically to the right to form bending section 17, bending vertically downwards to form bending section 18, bending vertically to the right to form bending section 19, bending vertically upwards to form bending section 20, bending vertically to the right to form bending section 21, and bending vertically downwards to form bending section 22. The connecting section 2 includes bending section 10, bending section 11, bending section 12, bending section 13, bending section 14, bending section 15, bending section 16, bending section 17, bending section 18, bending section 19, bending section 20, bending section 21, and bending section 22.
[0006] Furthermore, the surface layer is a 6063 aluminum alloy plate with a thickness of 0.8-1.2 mm, and the surface is coated with a fluorocarbon resin coating with a thickness of 50-80 μm; The bottom layer is a 5052 aluminum alloy plate with a thickness of 0.5-0.8mm, and the inner surface is covered with a polyurethane anti-corrosion coating with a thickness of 30-50μm; Both the upper and lower adhesive layers are epoxy resin films with a thickness of 0.08-0.12 mm; The flame-retardant core layer has a thickness of 3-5 mm.
[0007] Furthermore, the bending portion three, bending portion four, and bending portion five cooperate to form a slot, and an expansion sealing strip one is provided inside the slot; The bending parts fourteen, fifteen, and sixteen cooperate to form a retaining groove, and an expansion sealing strip two is provided in the retaining groove; Both the expansion sealing strip one and the expansion sealing strip two are made of chloroprene rubber-based composite material, which can expand to 5 times its original volume when exposed to fire.
[0008] Furthermore, the heat-melting temperature of the sealing sheet is 250±10℃.
[0009] Furthermore, the active fire-resistant components are distributed in an array, with a density of 20-30 units / m². 2 .
[0010] The advantages of this utility model compared with the prior art are as follows: 1. The synergistic effect of passive flame retardancy (flame retardant core layer) and active fire suppression (active fire protection components) greatly enhances fire resistance performance; 2. The edge connection structure and sealing strip prevent flames from spreading through the seams, solving the problem of ignition at the cross-section of traditional aluminum plates; 3. When adjacent aluminum plates are connected by an edge connection structure, the connectors between the aluminum plates and the keel can be covered, and no connectors are needed to connect adjacent aluminum plates. This greatly improves the aesthetics after installation, makes installation quick, ensures reliable connection, and prevents the plates from falling off. 4. The outer fluorocarbon resin and the inner polyurethane form a double protection, making it less prone to damage and with a long service life. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of a fireproof composite aluminum plate for building according to this utility model. Figure 1 .
[0012] Figure 2 This is a schematic diagram of the structure of a fireproof composite aluminum plate for building according to this utility model. Figure 2 .
[0013] Figure 3 yes Figure 1 A magnified structural diagram at point A.
[0014] Figure 4 yes Figure 2 A magnified structural diagram at point B.
[0015] Figure 5 This is a structural schematic diagram of the flame-retardant core layer and active fireproof component of a fireproof composite building aluminum plate according to this utility model.
[0016] Figure 6 This is a structural schematic diagram of an active fireproof component for a fireproof composite aluminum plate used in building according to this utility model.
[0017] Figure 7 This is a schematic diagram of the structure of adjacent aluminum plates splicing together in a fireproof composite building aluminum plate according to this utility model. Figure 1 .
[0018] Figure 8 This is a schematic diagram of the structure of adjacent aluminum plates splicing together in a fireproof composite building aluminum plate according to this utility model. Figure 2 .
[0019] Figure 9 yes Figure 7A magnified structural diagram at point C.
[0020] As shown in the figure: 1. Surface layer; 101. Bending section one; 102. Bending section two; 103. Bending section three; 104. Bending section four; 105. Bending section five; 106. Bending section six; 107. Bending section seven; 108. Bending section ten; 109. Bending section eleven; 110. Bending section twelve; 111. Bending section thirteen; 112. Bending section fourteen; 113. Bending section fifteen; 114. Bending section sixteen; 115. Bending section 17; 116. Bending section 18; 117. Bending section 19; 118. Bending section 20; 119. Bending section 21; 120. Bending section 22; 2. Flame-retardant core layer; 3. Bottom layer; 301. Bending section 8; 302. Bending section 9; 4. Upper adhesive layer; 5. Lower adhesive layer; 6. Active fireproof component; 601. Storage box; 602. Sealing sheet; 7. Expanding sealing strip 1; 8. Expanding sealing strip 2. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Example 1, in conjunction with Appendix Figure 1-9 A fire-resistant composite aluminum panel for building, comprising a surface layer 1, a flame-retardant core layer 2, a bottom layer 3, an upper adhesive layer 4, a lower adhesive layer 5, an active fire-resistant component 6, and an edge connection structure; The surface layer 1 is fixedly connected to the flame-retardant core layer 2 through the upper adhesive layer 4, the flame-retardant core layer 2 is fixedly connected to the bottom layer 3 through the lower adhesive layer 5, the active fireproof component 6 is embedded inside the flame-retardant core layer 2, and the edge connection structure is set on both sides of the aluminum plate. The active fire protection component 6 includes a storage box 601 and a sealing sheet 602 sealed at the opening of the storage box 601. The storage box 601 contains perfluorohexanone fire extinguishing agent. The sealing sheet 602 is made of hot-melt material. Multiple active fire protection components 6 are provided, and multiple active fire protection components are evenly embedded inside the flame-retardant core layer 2.
[0023] In this specific embodiment, the surface layer 1 is a 6063 aluminum alloy plate with a thickness of 0.8-1.2mm, and the surface is coated with a fluorocarbon resin coating with a thickness of 50-80μm; The bottom layer 3 is a 5052 aluminum alloy plate with a thickness of 0.5-0.8mm, and the inner surface is provided with a polyurethane anti-corrosion coating with a thickness of 30-50μm; Both the upper adhesive layer 4 and the lower adhesive layer 5 are epoxy resin films with a thickness of 0.08-0.12 mm. A silane coupling agent is added to the epoxy resin film, with a silane coupling agent content of 1-3 wt%. The flame-retardant core layer 2 is composed of the following raw materials in parts by weight: 10-20 parts of polyethylene matrix, 50-70 parts of ammonium polyphosphate flame retardant, 20-30 parts of magnesium hydroxide, 8-12 parts of rock wool fiber, and 1-2 parts of aluminate coupling agent, with a thickness of 3-5 mm.
[0024] Work process: The aluminum plate's fire protection process involves both passive flame retardancy and active fire prevention mechanisms. Initial temperature of fire <200℃: The ammonium polyphosphate in the flame-retardant core layer 2 decomposes upon heating to generate polyphosphoric acid, which promotes the dehydration and carbonization of the material surface, forming a carbonized layer that isolates oxygen. The endothermic decomposition reaction of magnesium hydroxide is: Mg(OH)2 → MgO + H2O - This process is endothermic and lowers the surface temperature of the material. Fire spread temperature > 300℃: Heat is conducted through the aluminum plate to the active fireproof component 6, the sealing sheet 602 melts, the perfluorohexanone ruptures and releases gas, forming a gaseous barrier to isolate the flame from oxygen; Under sustained high temperatures: The rock wool fibers in the flame-retardant core layer 2 maintain structural integrity and prevent collapse.
[0025] In this specific embodiment, the edge connection structure includes a first connection part and a second connection part; The left end of the top layer 1 is bent vertically downwards in sequence to form a first bend 101, a second bend 102 to the left, a third bend 103 to the bottom layer 180° to the top layer 180° to the top layer 180° to the top layer 103, a fourth bend 104 to the bottom layer 104 to the top layer 105 to the left, a fifth bend 105 to the top layer 106 to the bottom layer 106 to the top layer 107 to the right. The angle between the sixth bend 106 and the seventh bend 107 is greater than 90°. The left end of the bottom layer 3 is bent vertically upwards in sequence. The first connecting part includes a second bending part 102, a third bending part 103, a fourth bending part 104, a fifth bending part 105, a sixth bending part 106, a seventh bending part 107, a seventh bending part 107, a eighth bending part 301, and a ninth bending part 302. The second bending part 1 is bent to form a bending part 8 301 and a ninth bending part 302. The right end of the surface layer 1 is bent vertically downwards to form a bent section 108, bent vertically to the right to form a bent section 119, bent vertically downwards to form a bent section 120, bent vertically to the left to form a bent section 1311, bent vertically downwards to form a bent section 1412, bent vertically to the right to form a bent section 1513, bent vertically upwards to form a bent section 1614, bent vertically to the right to form a bent section 1715, bent vertically downwards to form a bent section 1816, and bent vertically to the right to form a bent section 1917. The connecting part 2 includes bends 10, 11, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 119, and 120, which are formed by bending upwards vertically, bending to the right vertically, and bending downwards vertically. The lower side of bend 15 113 is also connected to the upper side of the bottom layer 3 through a lower adhesive layer 5.
[0026] In use, place an aluminum plate in the desired position, aligning the bent portion 18 116 with the keel. Secure the bent portion 18 116 to the keel using rivets or screws. Take another aluminum plate and connect adjacent aluminum plates using connecting portions 1 and 2. Specifically, for ease of explanation, the fixed aluminum plate is defined as aluminum plate A, and the aluminum plate to be installed is positioned as aluminum plate B. Insert the bent portion 6 106 of aluminum plate B into the gap between the bent portions 13 111 and 17 115 of aluminum plate A. The bending portion six 106 of plate B fits into the bending portion fourteen 112 of aluminum plate A, and the end of the bending portion seven 107 abuts against the upper end of the bending portion sixteen 114 to achieve a snap-fit. At this time, the bending portions eleven 109, twelve 110, and thirteen 111 are inserted into the gap between the bending portions three 103 and six 106. The end of the bending portion two 102 abuts against the bending portion ten 108. The bending portion two 102 covers the connector on one hand and serves as a decorative strip between the aluminum plates on the other hand, thus improving the aesthetics.
[0027] In this specific embodiment, the bending portion three 103, bending portion four 104, and bending portion five 105 cooperate to form a slot, and an expansion sealing strip 7 is provided in the slot; The bending portions 14 112, 15 113, and 16 114 cooperate to form a retaining groove, and an expansion sealing strip 2 8 is provided in the retaining groove; Both the expansion sealing strip 7 and the expansion sealing strip 8 are made of chloroprene rubber-based composite material, which can expand to 5 times its original volume when exposed to fire.
[0028] Under sustained high temperatures, expansion sealing strips 7 and 8 expand and fill the joints, preventing the fire from spreading laterally.
[0029] In this specific embodiment, carbon nanotube reinforcing ribs with a diameter of 50-80nm, a length of 200-500μm, and an addition amount of 0.5-1.5wt% are uniformly distributed in the flame-retardant core layer 2.
[0030] In this specific embodiment, the sealing sheet 602 is made of ethylene-vinyl acetate copolymer (EVA) hot melt adhesive film (melt index 25g / 10min) with a melting point of 250±10℃.
[0031] In this specific embodiment, the active fire protection components 6 are distributed in an array with a density of 20-30 units / m². 2 .
[0032] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0033] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0034] In the description of the embodiments of this utility model, "a plurality of" means at least two.
[0035] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A fire-resistant composite aluminum panel for building applications, characterized in that: It includes a top layer (1), a flame-retardant core layer (2), a bottom layer (3), an upper adhesive layer (4), a lower adhesive layer (5), an active fire-retardant component (6), and an edge connection structure; The surface layer (1) is fixedly connected to the flame-retardant core layer (2) through the upper adhesive layer (4), the flame-retardant core layer (2) is fixedly connected to the bottom layer (3) through the lower adhesive layer (5), the active fireproof component (6) is embedded inside the flame-retardant core layer (2), and the edge connection structure is set on both sides of the aluminum plate; The active fire protection component (6) includes a storage box (601) and a sealing sheet (602) sealed at the opening of the storage box (601). The storage box (601) contains perfluorohexanone fire extinguishing agent. The sealing sheet (602) is made of hot melt material. The active fire protection component (6) is provided in multiple ways. Multiple active fire protection components are evenly embedded inside the flame-retardant core layer (2).
2. The fire-resistant composite aluminum panel for buildings according to claim 1, characterized in that: The edge connection structure includes a first connection part and a second connection part; The left end of the surface layer (1) is bent vertically downwards in sequence to form a bend 1 (101), then bent vertically to the left to form a bend 2 (102), then bent downwards at 180° to form a bend 3 (103), then bent vertically downwards to form a bend 4 (104), then bent vertically to the left to form a bend 5 (105), then bent vertically downwards to form a bend 6 (106), and finally bent to the right to form a bend 7 (107). The angle between bend 6 (106) and bend 7 (107) is greater than 90°. The left end of the bottom layer (3) is bent vertically upwards in sequence to form a bend. The eighth fold (301) is bent vertically to the left to form the ninth fold (302). A gap is left between the second fold (102) and the third fold (103) to match the ninth fold (302). The ninth fold (302) is inserted into the gap and fixedly connected to the surface layer (1) with glue. The first connecting part includes the second fold (102), the third fold (103), the fourth fold (104), the fifth fold (105), the sixth fold (106), the seventh fold (107), the eighth fold (301), and the ninth fold (302). The right end of the surface layer (1) is bent vertically downwards to form bending section ten (108), bent vertically to the right to form bending section eleven (109), bent vertically downwards to form bending section twelve (110), bent vertically to the left to form bending section thirteen (111), bent vertically downwards to form bending section fourteen (112), bent vertically to the right to form bending section fifteen (113), bent vertically upwards to form bending section sixteen (114), bent vertically to the right to form bending section seventeen (115), bent vertically downwards to form bending section eighteen (116), bent vertically to the right to form bending section nineteen (117), bent vertically upwards to form bending section nineteen (117), and bent vertically upwards to form bending section nineteen (118). The connecting part 2 includes bending part 20 (118), bending part 21 (119) to the right vertically, and bending part 22 (120) to the bottom vertically. The connecting part 2 includes bending part 10 (108), bending part 11 (109), bending part 12 (110), bending part 13 (111), bending part 14 (112), bending part 15 (113), bending part 16 (114), bending part 17 (115), bending part 18 (116), bending part 19 (117), bending part 20 (118), bending part 21 (119), and bending part 22 (120).
3. The fire-resistant composite aluminum panel for buildings according to claim 1, characterized in that: The surface layer (1) is a 6063 aluminum alloy plate with a thickness of 0.8-1.2mm and a fluorocarbon resin coating with a thickness of 50-80μm. The bottom layer (3) is a 5052 aluminum alloy plate with a thickness of 0.5-0.8mm and a polyurethane anti-corrosion coating with a thickness of 30-50μm on the inner surface; The upper adhesive layer (4) and the lower adhesive layer (5) are both epoxy resin films with a thickness of 0.08-0.12 mm; The flame-retardant core layer (2) has a thickness of 3-5 mm.
4. The fire-resistant composite aluminum panel for buildings according to claim 2, characterized in that: The bending part three (103), bending part four (104), and bending part five (105) cooperate to form a slot, and an expansion sealing strip one (7) is provided in the slot. The bending part fourteen (112), bending part fifteen (113), and bending part sixteen (114) cooperate to form a retaining groove, and an expansion sealing strip two (8) is provided in the retaining groove. Both the expansion sealing strip one (7) and the expansion sealing strip two (8) are made of chloroprene rubber-based composite material, which can expand to 5 times its original volume when exposed to fire.
5. The fire-resistant composite aluminum panel for buildings according to claim 1, characterized in that: The sealing sheet (602) has a heat-melting temperature of 250±10℃.
6. The fire-resistant composite aluminum panel for buildings according to claim 1, characterized in that: The active fireproof component (6) is distributed in an array, with a density of 20-30 / m 2 .