Powder coating is a completely solvent-free, 100% solid […]
Powder coating is a completely solvent-free, 100% solids thermosetting powder coating. Powder coatings, also known as dry paints, are environmentally friendly products that offer a wide range of powder coatings. In recent years, more and more industries and more and more fields have begun to use powder coatings. With the rapid development of the aluminum profile industry, powder coatings applied to aluminum profiles have become a highlight, and gradually replaced the paint. With the development of transfer technology, the variety of powder coatings for aluminum profiles is more colorful.
The production of powder coatings is to add solid materials such as resins, curing agents, pigments, fillers and auxiliaries to the mixer according to the formulation ratio without using solvents or water. After thorough mixing and dispersion, it is quantitatively added to the extruder for melt mixing. Then, it is pressed into a thin sheet on the cooling of the tablet, cooled and broken into a flake shape, and then subjected to air classification and pulverization, and then vortex separated, and the separated coarse powder is sieved by vibration to obtain a finished product, and the fine powder is recovered through a bag filter, and the whole is recovered. The production process is a physical process in which there is essentially no chemical reaction.
Powder coating is very strict, but there are some problems that will inevitably occur when using electrostatic spray powder. As long as the strict operation is not sloppy, the problem will be reduced. When using the powder spraying equipment, follow the standard operation. The correct use of equipment is also a way to improve the quality. Powder electrostatic spraying to improve the quality is not only a good electrostatic spray powder, but also the correct use of electrostatic spraying equipment. The operating standard of powder electrostatic spraying, look at some of the spray powder caused by improper operation, there are three main defects after finishing, one is that it looks thin and uneven, the color is not uniform, the surface is rough, then there is coating It is too thick, so that the inner layer is not easy to dry, and there will be crusts. The last point is that after the electrostatic powder is finished, it is too thin to reach the required thickness.