辰航新材料品牌画册（2023版）

● Surface treatment of fluorocarbon aluminum veneer curtain wall The surface coating of aluminum veneer is divided into fluorocarbon spraying, powder spraying, polyester paint spraying and wood grain. The surface coating of fluorocarbon spraying is divided into two coatings and one baking, three coatings and one baking according to the processing technology, and the surface coating of powder spraying is one coating and one baking. The surface coat - ing properties of aluminum plate are strictly in accordance with customer requirements, and the color can be provid - ed by the company with standard color cards for custom - ers to choose, or according to the color plates provided by customers. ● Fluorocarbon spraying process: (1) Primer: As a coating for sealing the substrate, its function is to improve the anti-penetration ability of the coating, enhance the protection of the substrate, stabilize the metal surface layer, strengthen the adhesion between the topcoat and the metal surface, and ensure the color uniformity of the topcoat coating. The thick - ness of the paint layer is generally 5-10um; (2) Top coat: The key layer of spraying coating is to provide the decorative color required by the substrate, make the appearance of the substrate meet the design requirements, and protect the metal surface from the erosion of the external environment atmosphere, acid rain and pollution, and prevent ultraviolet rays from pen - etrating. Greatly enhance the anti-aging ability, the top coat is the thickest paint layer in spraying, and the thickness of the paint layer is generally 23-30um; (3) Finishing paint: Finishing paint coating is also called varnish coating. Its main purpose is to more effectively enhance the anti-external erosion ability of paint layer, protect topcoat coating, increase the metal - lic luster of topcoat color, and make the appearance more bright and dazzling. The coating thickness is gen - erally 5-10um. (4) Curing treatment: Three spraying coatings gen - erally need secondary curing, and aluminum materials enter the curing furnace for treatment. The curing tem - perature is generally between 180 ℃ and 250 ℃, and the curing time is 15-25 minutes. Different fluorocarbon coating manufacturers will provide the best temperature and time according to their own coatings. Some fluoro - carbon spraying factories (curium oil factories) also change the two curing of three spraying to one curing according to their own experience. > Spraying technology and coating structure 35 智造饰面·让城市更美丽 © ChenHang New Material 铝合金面板 Aluminum veneer 铝铬化膜 Aluminum-chromium coating 初漆（底漆） Primary coat (undercoat) 面漆（底漆或花纹） Finishing coat undercoat or decorative pattern) 清漆或保护层 Varnish or protective layer 保护膜 Protective film 铝单板涂层次结构图 Structural diagram of aluminum veneer coating