Polyurethane powders have excellent flow characteristics with excellent chemical and mechanical properties. Outstanding corrosion resistance and excellent external exposure properties make them suitable alternative to polyester powders.
Polyurethane powder contains polyurethanic resins cured with curing agents. The powder forms protective and decorative film along with enhanced outdoor resistance. The protective film have good resistance to mechanical damage, detergents, fuels and oils.
The surface to be coated must be cleaned from oils, grease or flash rust.
The curing schedule is 10-15 minutes @180- 200ºC metal temperature.
Store in a cool and dry place at a temperature lower than 30°C. Higher temperature may damage the chemical and mechanical properties of the powder
Because of its special content, these powders are suggested specially for exterior coating.
It is always recommended to use a top coat with transparent powders on the top of the metallic powders. The top coat prevents oxidation of the metallic pigments of the base coat thus enhancing the life of the coating.
