Analysis of common quality problems in aluminum composite material panel curtain wall engineering
1. Discoloration and decolorization of aluminum composite material panel
Discoloration and decolorization of the aluminum composite material panels are mainly caused by the improper selection of aluminum alloy. The aluminum composite material panel can be divided into the indoor panel and outdoor panel. The surface coating of the two panels is different, which determines the application of the two panels on different occasions. The surface of the panel used in the room is generally coated with resin coating, which can not adapt to the harsh outdoor natural environment. If it is used outdoors, it will naturally accelerate its aging process and cause discoloration. The surface coating of the outdoor aluminum composite material panel is made of fluorocarbon resin coating with strong anti-aging and ultraviolet resistance, which is expensive. Some construction units deceive the owners and use indoor panels as an anti-aging and corrosion-resistant fluorocarbon panel to extract unreasonable profits, resulting in serious discoloration and decolorization of aluminum composite material panel used in engineering.
2. Gluing and falling off of the aluminum composite material panel
The main reason for the opening and falling off of aluminum composite material panel is the improper selection of adhesive. As an ideal adhesive for outdoor aluminum composite material panel engineering, silicone adhesive has unique advantages. In the past, China's silicone rubber mainly depended on imports, and many people were deterred by its value. Only those expensive curtain wall projects on high-rise buildings dare to take part. Now, China has put into production different brands of silicone rubber, resulting in a sharp drop in prices. Now, when buying an aluminum composite material panel, the seller will recommend the special quick-drying adhesive. This kind of glue can be used indoors. When it is used outdoors with a changeable climate, the phenomenon of glue opening and degumming will appear.
Different Finishes and Colors of Aluminum Composite Material Panel
3. Deformation and bulging of the aluminum composite material panel surface
There are many reasons for the surface deformation and bulge of the aluminum composite material panel. In the past, this kind of quality problem occurred in the construction, which we once thought was the quality reason of the plate itself; later, after everyone's concentrated analysis, we found that the main problem was the base plate pasted with the aluminum composite material panel, and then the quality problem of the aluminum composite material panel itself. Dealers often provide us with the construction technology of aluminum composite material panel, and the recommended base materials are mainly high-density board, wood board and so on. In fact, when this kind of material is used outdoors, its service life is very fragile. After wind, sun, and rain, it will inevitably produce deformation. Since the base material has been deformed, the aluminum composite material panel as the surface layer has the principle of no deformation. It can be seen that the ideal outdoor base material should be treated with rust prevention before the angle steel and square steel pipe form a skeleton. If conditions permit, it is more ideal to use aluminum profile as the skeleton. The cost of the skeleton made of this kind of metal material is not much higher than that of the wood keel high-density panel, which can ensure the engineering quality.
4. The glue joints of the aluminum composite material panel shall be neat
When the aluminum composite material panel is used to decorate the building surface, there is usually a gap with a fixed width between the panels. For the sake of beauty, the black sealant should be filled in the gap. In order to save time, some construction workers do not need paper glue to ensure the neat and rules of gluing but use the protective film on the surface of aluminum composite material panel as a substitute. As the protective film will tear in different degrees when cutting the aluminum composite material panel, it is impossible to clean up the glue seam neatly when it is used as the substitute of protective tape.
