Selection of high quality powder coatings manufacturers - Thermosetting powder coatings

The particle size distribution is closely related to the coating texture, smoothness, glossiness, particle size, charged effect, powder fluidization effect, storage stability and powder recovery. Generally speaking, the smaller the particle size of the powder, the better the smoothness of the coating when curing; at the same spray thickness, the smaller the particle size of the powder is more difficult to appear particles; the smoother the appearance of the coating.

The powder charging rate of powder coatings will be increased by increasing the charged capacity of powder particles. The main adsorption force of electrostatic spraying is electrostatic force, and the powder loading rate mainly depends on the charged powder particles. The charged amount of powder is directly proportional to the square of the particle size of the powder. With increasing particle size, the powder charge is increased and the rate of powder addition is increased. But the particle size can not be too large, the particle size is too large, the gravity of large particles exceeds the aerodynamic and electrostatic forces, powder coatings in flight, because the gravity effect does not reach the surface of the workpiece has fallen, but reduces the powder rate. If the powder is too fine and charged, the coating efficiency will be reduced. Ultrafine powder is basically not charged. At the same time, the powder is too fine also increases the difficulty of powder production.

Choose the method of high quality powder coating manufacturer - Thermosetting powder coating.