Working principle of spray powder
Time:
2024-12-02 12:00
Author:
Spray powder is a kind of solid particles, mainly composed of resin, additives, pigments and additives. The working principle of spray powder mainly includes two links: electrostatic adsorption and thermal curing.
The first is electrostatic adsorption. In the spraying process, the spray powder is released to the surface of the workpiece to be coated by a special spray gun, and then under the action of a high-voltage electrostatic field, the spray powder is charged with electrostatic charge to form a charged powder cloud. The workpiece is connected to ground with an opposite charge, which causes the charged powder cloud to be adsorbed on the surface of the workpiece, achieving electrostatic adsorption.
This is followed by thermal curing. After electrostatic adsorption, the spray powder on the workpiece forms a uniform powder coating. The workpiece is then sent to an oven for heat curing. In a high temperature environment, the spray powder will melt and level, and finally form a strong paint film. During the thermal curing process, the resin cures and forms a dense coating that protects the surface of the workpiece.
In general, as an environmentally friendly and efficient coating material, the working principle of spray powder mainly depends on electrostatic adsorption and thermal curing. Through these two steps, the effects of color coating, anti-corrosion, anti-scratch and the like in the coating process can be realized, and are widely used in the fields of automobiles, furniture, machinery and the like.
The first is electrostatic adsorption. In the spraying process, the spray powder is released to the surface of the workpiece to be coated by a special spray gun, and then under the action of a high-voltage electrostatic field, the spray powder is charged with electrostatic charge to form a charged powder cloud. The workpiece is connected to ground with an opposite charge, which causes the charged powder cloud to be adsorbed on the surface of the workpiece, achieving electrostatic adsorption.
This is followed by thermal curing. After electrostatic adsorption, the spray powder on the workpiece forms a uniform powder coating. The workpiece is then sent to an oven for heat curing. In a high temperature environment, the spray powder will melt and level, and finally form a strong paint film. During the thermal curing process, the resin cures and forms a dense coating that protects the surface of the workpiece.
In general, as an environmentally friendly and efficient coating material, the working principle of spray powder mainly depends on electrostatic adsorption and thermal curing. Through these two steps, the effects of color coating, anti-corrosion, anti-scratch and the like in the coating process can be realized, and are widely used in the fields of automobiles, furniture, machinery and the like.
Key words:
喷塑粉