Powder coating and fluorocarbon coating are both commonly used electrostatic spraying methods.
Powder coating involves using a powder coating equipment (electrostatic spraying machine) to apply powder coating material onto the surface of workpieces. Under the influence of static electricity, the powder will uniformly adhere to the surface of the workpiece, forming a powder-like coating. This coating can be formulated in various colors. Spraying equipment includes manual models and automatic hanging models. The coating process is simple, with a coating thickness of over 30 micrometers. It exhibits good impact resistance, wear resistance, corrosion resistance, and weather resistance, and the coating material is cheaper than fluorocarbon. The weakness of powder coating is its susceptibility to ultraviolet radiation from the sun, which can cause natural fading over prolonged exposure. Currently, colored aluminum profiles used in frames, doors, and windows on the market are made by powder coating ordinary aluminum profiles. This surface treatment not only increases the variety of colors of aluminum profiles but also enhances their corrosion resistance.
Fluorocarbon spraying, another type of electrostatic spraying, is a liquid spraying process that belongs to a more advanced spraying technology and is priced higher. It has been widely used abroad and has recently seen significant application in aluminum panel curtain walls in China. Due to its excellent characteristics, it is increasingly valued and favored by the construction industry and a wide range of users. Fluorocarbon spraying exhibits superior resistance to fading, frosting, corrosion from atmospheric pollution (such as acid rain), strong UV resistance, high crack resistance, and can withstand harsh weather conditions, which are unmatched by general coatings.