Fireproof color steel plate

Abstract

The utility model discloses a kind of fireproof color steel plates, belong to building board technical field.The color steel plate includes upper color steel panel, lower color steel panel and intermediate core material, and its key is: the core material is double-layer structure, including a layer of rock wool board and a layer of planar ceramic fiber blanket;Rock wool board and upper and lower color steel panel between are all provided with the ceramic fiber blanket;The inner surface of the upper and lower color steel panel is coated with intumescent fire retardant coating layer.The utility model constructs multiple fire barriers by the composite core material structure of "ceramic fiber blanket+rock wool+ceramic fiber blanket", and is supplemented with the fire retardant coating of panel inner surface, constructs multiple fire barriers, greatly improves the fire resistance limit of color steel plate whole, effectively prevents the spread of fire and high temperature when fire, solves the safety problem that traditional polystyrene or polyurethane core material color steel plate is flammable and can produce toxic smoke.

Description

Technical Field

[0001] This application relates to the field of building materials, and in particular to a fireproof color steel plate. Background Technology

[0002] Color-coated steel sheets are widely used in industrial plants, warehouses, and temporary buildings due to their advantages such as light weight, high strength, and quick construction. However, traditional color-coated steel sheets mostly use polystyrene (EPS) or polyurethane (PU) as core materials. These materials are highly flammable and can spread rapidly in a fire, releasing large amounts of toxic fumes, posing a significant fire hazard. Although rock wool color-coated steel sheets have good fire resistance, the bonding between them and the metal panel may fail under extreme temperatures, and high-temperature heat radiation can still ignite combustibles on the unexposed side, indicating that there is still room for improvement in their fire resistance limit. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a fireproof color steel plate that combines structural fire resistance and material fire resistance, has a high fire resistance limit, and excellent safety performance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A fireproof color steel plate includes an upper color steel panel, a lower color steel panel, and a core material filling the space between them. The key features are: the core material is a composite core material, including a layer of rock wool board and a single-sided ceramic fiber felt; the ceramic fiber felt is provided between the rock wool board and both the upper and lower color steel panels; and the inner surfaces of the upper and lower color steel panels are coated with an intumescent fireproof coating layer.

[0005] The design constructs multiple lines of fire protection: The first line of defense (inside the panel): The intumescent fire-retardant coating layer expands and foams rapidly when exposed to fire, forming a dense carbonized layer dozens of times thicker, which isolates oxygen and heat, protects the metal panel, and slows down its temperature rise.

[0006] The second line of defense (contact surface): Ceramic fiber felt has extremely high temperature resistance (>1000℃). As a heat insulation layer, it can effectively block heat from being transferred to the core layer. Due to its flexibility, it can maintain its adhesion to the panel at high temperatures, preventing the overall structure from peeling off and failing prematurely.

[0007] The third line of defense (core insulation): Rock wool itself is a Class A non-combustible material, forming the main thermal insulation barrier.

[0008] These three lines of defense work together to significantly slow down the temperature rise on the unexposed side, thereby greatly improving the fire resistance limit of the color steel plate and meeting higher requirements of building fire protection codes.

[0009] Furthermore, the density of the rock wool board is not less than 100 kg / m³.3 This ensures that it has sufficient structural strength and thermal insulation performance.

[0010] Furthermore, the thickness of the ceramic fiber felt is 3-10mm, achieving a balance between ensuring heat insulation effect and controlling cost.

[0011] Furthermore, the upper and lower color steel panels are bonded together with ceramic fiber felt using fire-retardant adhesive to ensure bonding strength and stability at high temperatures.

[0012] Furthermore, the dry film thickness of the intumescent fire-retardant coating layer is 0.2-0.5 mm to ensure effective fire protection.

[0013] Compared with the prior art, the present invention has the following significant advantages: Extremely high fire resistance limit: Multiple fire-resistant designs make the fire resistance limit of this color steel plate far exceed that of ordinary rock wool color steel plates, reaching more than 1.5 hours.

[0014] Good structural stability: The transition layer of ceramic fiber felt effectively prevents the core material from delaminating from the panel at high temperatures, maintaining the integrity of the board.

[0015] Safe and environmentally friendly: All materials are non-combustible or flame-retardant, and no toxic fumes are released in the event of a fire.

[0016] Wide range of applications: It is especially suitable for places with extremely high fire protection requirements, such as chemical warehouses and the maintenance structure of high-rise buildings. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a fireproof color steel plate. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0020] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent 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. Therefore, they should not be construed as limitations on this patent.

[0021] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0022] Example 1 like Figure 1 As shown, the fireproof color steel plate consists of the following layers from top to bottom: an upper color steel panel 1 (such as a 0.5mm thick aluminized zinc plate), the inner surface of which is coated with a 0.3mm thick intumescent fireproof coating layer 5; a 5mm thick ceramic fiber felt 4 is bonded together with a fireproof adhesive 6; and then a layer with a density of 120kg / m³ is bonded together. 3 The process involves bonding a rock wool board 3, followed by another layer of ceramic fiber felt 4, and finally bonding it to a lower color steel panel 2, whose inner surface is also coated with a fire-retardant coating layer 5. The process is achieved through continuous roller pressing or high-pressure composite technology.

[0023] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A fireproof color steel plate, comprising an upper color steel panel (1), a lower color steel panel (2), and a core material filled between the two, characterized in that: The core material is a composite core material, including a layer of rock wool board (3) and a single-sided ceramic fiber felt (4); the ceramic fiber felt (4) is provided between the rock wool board (3) and the upper color steel panel (1) and the lower color steel panel (2); the inner surfaces of the upper color steel panel (1) and the lower color steel panel (2) are coated with an intumescent fireproof coating layer (5).

2. The fireproof color steel plate according to claim 1, characterized in that: The density of the rock wool board (3) is not less than 100 kg / m³. 3 .

3. The fireproof color steel plate according to claim 1, characterized in that: The thickness of the ceramic fiber felt (4) is 3-10 mm.

4. The fireproof color steel plate according to claim 1, characterized in that: The upper color steel panel (1) and the lower color steel panel (2) are bonded and composited with the ceramic fiber felt (4) by fireproof adhesive (6).

5. A fireproof color steel plate according to claim 1, characterized in that: The dry film thickness of the intumescent fire-retardant coating layer (5) is 0.2-0.5 mm.

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