pay attention while spray powder coating

The significant difference between powder coating and solvent based coating is that the 

dispersion medium is different. In solvent based coating, organic solvents are used as 

dispersion medium, while in the coating, the compressed air is used as a dispersion medium. 

The coating is dispersed in the coating, and the particle size of the coating can not be 

adjusted. Therefore, it is important to be suitable for electrostatic spraying of powder 

particle size. The powder particle size of more than 90 microns, in electrostatic spraying, 

particles with charge to mass ratio is small, large particle gravity will soon exceed the 

air dynamic and static electricity, therefore, large granular powder has larger adsorption 

kinetic energy, is not easy to work.

In the process of using powder coating, there are many 

matters need to pay attention to, for example, for powder bucket, spraying room and 

recovery system should avoid different color powder pollution, so every time the color 

change must be clean and purge. In addition, in order to make the characteristics of powder 

coating can fully exert and prolong the service life of the coating film, the surface of 

the broken coating is first strictly carried out before the surface treatment. Also, check 

immediately after spraying, if found defects should be timely treatment, if after curing 

defects are found, the only local small range without affecting, the coated surface 

decoration, can use the same color powder and acetone diluted to repair, if the scope is 

large and affects the surface quality, use sandpaper, or again. Use paint remover to remove 

the coating, re Suo powder.

The application of the powder coating can be done right 

guarantee for the safety of construction, in the construction process, we should pay 

attention to avoid storage in susceptible to water, organic solvent, oil and other 

materials contaminated sites; secondly, to stay away from the fire, avoid direct sunlight, 

should be in a well ventilated place in the temperature below 35 DEG C; spraying chamber 

the concentration of floating dust, try to control the safe concentration, avoid dust 

explosion danger; powder coating after use do not exposed to the air, should be stamped or 

turn tightly to prevent debris mixed.