As technology grows, new materials that have not existed before have come into the field, one of the most commonly used are combinations of aluminum and excellent materials and minerals. These are called composite panels. One of the prominent features in the composite facade is its lightness for the building. Reducing the weight of the building reduces the cutting force of the base and thus reduces the earthquake force in structural calculations. As a result, structural design elements are more economical and optimal, which, in addition to reducing the damage caused by the earthquake, makes the structural sections lighter.
Also, for the construction of aluminum composite sheets, a metal skeleton is installed to the building, which cannot be ignored by the desired effect as between the frame. Between the frames are the outer and inner walls of the building that play the role of separators in the steel and concrete structures. They can be effective in increasing the stiffness of the structure. Since the perimeter of the aluminum composite sheet weighs only about 5 kilograms this material is considered to be a constructional material. The composite is 90% lighter than cement, 70% lighter than glass and 50% lighter than conventional aluminum sheet.
It also protects against climate change, ultraviolet radiation and strong acidic and alkaline conditions, pollution, corrosion and dullness, and for many years maintain it’s apparent and technical properties unchanged. Its flexibility is excellent and the possibility deformation to any shape. It is sound insulation, heat, humidity and electromagnetic waves, and if needed, it can easily be changed. The pace of implementation, color variation and great use is some of the benefits of this product.
For the reasons mentioned in recent years, the most suitable and most accessible solution for the modernization of old buildings and the introduction of a new appearance to it, is the use of composite panel sheets.
Compounds Aluminum composite sheet is a material made of aluminum double layer and a plastic layer of polyethylene or polystyrene. These three layers are bonded together by polymer glue. The thickness of the two-layer aluminum alloy is not even greater, and is less than 3, 0 to 5, 0 millimeter. The dimensions of this product can be very variable, but the most common size is 3200 x 12500 mm square. In this type of facade, a layer of composite sheet is planted on the surface. It accepts various colors and designs and, depending on the type of interior or exterior appearance, they perform different resins on it. On the back layer, a polyester paint layer is also used. Aluminum composite sheets can be made in the form of a variety of stones and wood.
Types of Aluminum Composite
Polyester
PDF (PDF)
Nano PDF (Nano-PDF)
Polyester: The easiest way to paint on an aluminum layer. In this method, the paint runs without any protective layer on the aluminum layer. This type of sheet is vulnerable to atmospheric conditions and sunlight, so it is better to use this sheet in the environment Packages such as interior decoration and interior facades.
PVDF: a kind of coating that protects the surface of the sheet due to its polymer and lacquer coating and is resistant to atmospheric conditions, the sunlight is acidic. Before the PVDF resin is applied on the surface of the aluminum sheet, a layer of polyurethane primer painted on the sheet is then added to the paint layer.
Nano PDF: In this cover, in addition to the layer used in PDF, a third layer is also applied to the PVDF resin, which differs from the molecular structure with ordinary golden ones. The molecular gap in this coating is reduced by Nano technology as a result; the sheet does not absorb environmental contaminants such as dust and dust particles in space.
