Building curtain wall surface materials such as aluminum veneer, aluminum composite panel, honeycomb panel, etc., should be determined according to the design life. 1 The use of aluminum-plastic composite panels within ten years is due to the fact that the current aluminum-plastic composite panels are not uniform, the fish are mixed with beads, and the on-site processing is required when considering construction. The aluminum foil on the inner and outer surfaces is only 0.5mm. Many manufacturers of aluminum-plastic composite panels are processed by roll coating. Surface treatment, the surface has a certain texture, so the designer should pay attention to the optimization of material utilization rate, the surface of the board should not be placed horizontally and vertically, the effect of the effect should be strengthened according to the specifications, the edge of the aluminum-plastic board should be strengthened, and the aluminum square tube can be used. Or fixed angle aluminum, etc., the adhesive glue should be made of neutral silicone structural adhesive. When the aluminum-plastic composite panel is installed in the fire-proof section of the building or close to the area, the fire-resistant aluminum-plastic composite panel should be used. When the rib structure is calculated to determine the rib size and distribution spacing, the aluminum plate and the keel are fixed with angle aluminum. The length of the angle aluminum should not be less than 50mm. The angle aluminum should be open on the side of the keel. Ensure the thermal expansion and contraction of the board surface. Designers should also be careful not to use aluminum-plastic panels in vulnerable areas, otherwise they need to be reinforced on the back. 2 Aluminum veneers should be used when the service life is more than ten years. The aluminum veneer has good strength and strong corrosion resistance, and can be guaranteed in the factory. Since the aluminum veneer required for the construction site is processed into a finished product at the factory, it can be directly installed. Therefore, the designer must indicate the material, thickness, fixed ear plate specification, processing size and distribution of the aluminum veneer when making the aluminum veneer processing drawing. Spacing, machining error requirements, rib specifications and distribution spacing. It should be noted that the processing size of the fixing hole on the side of the ear plate near the keel should be considered for thermal expansion and contraction. Generally, the round hole is opened on the ear plate. When fixing the screw, the screw should be fixed in the middle of the long hole, so that it is convenient to install. It can also be flexible. At the same time, it should be noted that the ear plates around the board should be misaligned. Otherwise, the surface of the aluminum veneer may be “fighted” during installation. Fluorocarbon coating should be used. (The performance of fluorocarbon resin is superior to other treatment methods) , try to avoid the use of roller coating method (some of the roller products of the processing plant have directionality, affecting the appearance of the effect). Many buildings now use perforated aluminum veneers to enrich the effect. If there is no waterproof isolation layer behind the perforated aluminum veneer, then it can be waterproofed on the outer surface of the solid wall or double-layer curtain wall or directly waterproof on the back of the perforated aluminum veneer. Separate the layer and then design the perforated aluminum veneer. The hole size of the aluminum veneer must be greater than the plate thickness (process requirements). The hole spacing and size should be based on the strength requirements of the material (the pure aluminum veneer is lower than the alloy aluminum veneer), and the installation of the ribs is considered to avoid affecting the external view. effect. A reasonable design is to first make a sample, and determine the hole size and spacing by far and near view.
