Aluminum Corrugated Panel Factory Introduces The Characteristics Of Aluminum Composite Panels

Aluminum Corrugated Panel Factory introduced that the aluminum composite panel consists of two layers of 0.5mm thick aluminum plate sandwiched between the 2-5mm thick aluminum plate and the surface is coated with a thin fluorocarbon spray finish paint. This kind of composite board is characterized by uniform color, smooth surface, and convenient production. However, the disadvantage of this kind of composite board is that the middle interlayer of the composite board contains toxic components, and it releases poisonous gas when it burns or reaches high temperatures. It is good for both internal and external walls. The environment is polluted. At the same time, the aluminum plate and the PVC interlayer are glued together, and the composite strength is not high. A strong pull between the two layers can separate the aluminum plate and the interlayer.

In addition, because the aluminum plate is very thin, the composite plate is locally heated, and the middle interlayer is easy to expand, causing the aluminum plate to bulge outward. From the point of view of lightning protection of the curtain wall, because the aluminum composite panel is made of two 0.5mm thick aluminum sheets and polyethylene pressure bonding. Polyethylene is a poor conductor, and the two layers of aluminum thin plates are in an insulated state. Although the aluminum alloy subframe is added to the inner layer during the production of the composite aluminum plate, the rivets and the aluminum composite plate are fixedly connected on the four bent sides; because the riveting surface is too small, it is more important The 0.5mm aluminum sheet is too thin. In the event of lightning, a large flash current will penetrate the 0.5mm aluminum sheet when the building laterally develops and strikes the curtain wall. It is difficult for the strong current to pass through the composite board to ground the building and cause the building to be struck by lightning.

From the perspective of the production and installation of the aluminum composite panel: the aluminum composite panel is first made by slotting on the four sides of the composite panel, cutting off a certain width and leaving only 0.5mm thick outer aluminum plate on one side of the aluminum plate and the plastic layer. The four sides are bent at a 90° angle to form a rectangle. Then use aluminum material to make a rectangular sub-frame of the same size and place it in the rectangular slot of the aluminum-plastic plate. The bottom surface of the sub-frame is glued with the back of the aluminum-plastic plate. The bent four sides of the composite board are fixed on the four sides of the sub-frame with rivets and the middle of the rectangle. Then use structural glue to glue one to several aluminum profile stiffeners. At present, most installation and production units do not manufacture according to the above method, but the upper edge of the aluminum composite board is bent to an angle of 90° after the aluminum composite board is slotted, and only the four folded edges of the composite board are fixed by aluminum. In this way, the self-weight of the board surface and any external force and any load received are borne by the four sides of 0.5mm aluminum plates, which is less safe. Any curtain wall is subject to different positive and negative wind load pressures at any time, and 0.5mm on the four sides of the board is very easy to break. This phenomenon has appeared in most projects. Therefore, aluminum alloy subframes and reinforcing ribs must be added to the production of aluminum-plastic composite panel curtain walls.