Powder coated aluminium sheet for curtain walls
The spaying is a common seen coating method of color coated aluminum sheet, while the electrostatic spraying has powder spraying and fluorocarbon spraying two types. The powder coated aluminium sheet is processed by powder spaying which have low cost and applied in curtain walls.
The raw materials of powder coating polyurethane, polyurethane resin, epoxy resin, hydroxy polyester resin and epoxy/polyester resin, which can be prepared in various colors. The characteristics of powder coated aluminum are: the spraying equipment has manual and automatic hanging type, coating thickness is more than 30 microns, the powder coated aluminum sheet coil has impact resistance, abrasion resistance, corrosion resistance, weather resistance, etc., and the coating price is lower than that of fluorocarbon. The powder coated aluminum can not stand the sun’s ultraviolet radiation as the fluorocarbon coating, after long-term exposure, the surface will cause natural fading.
Another kind of electrostatic spraying is liquid spraying, also known as fluorocarbon spraying. It belongs to the high-grade spray, and the price is higher, the fluorocarbon coated aluminum sheet has been widely used in aluminum curtain wall. Due to its excellent characteristics, it has been increasingly valued and favored by the construction industry and users. Fluorocarbon color coated aluminium sheet has excellent resistance to fading, anti-blooming, anti-air pollution (acid rain, etc.), strong UV resistance, strong crack resistance and ability to withstand harsh weather conditions.
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