Acrylic urethane paint failure performance

Acrylic urethane paint pathological manifestations
Seeding: After painting the film surface is not smooth and fine particles generated phenomenon. It occurred lacquer, mainly due to improper use of volatile solvents quickly; spray viscosity is too high, wind pressure, standoff distance is too large; paint mixed with mechanical impurities unfiltered; surface treatment was not the net.
White: after the paint dry or produce matte spots whitening phenomenon. The main reason is the construction process too much humidity, solvent evaporation process, the film surface temperature fell sharply, resulting in water vapor condensation on the film. Usually quick-drying lacquer (such as nitro, vinyl chloride, thermoplastic acrylic paint) contains a lot of bottom-boiling solvents and thinners, easy white. Moisture agent is added and the amount of the high boiling solvent (such as butanol, butyl) adjusting solvent; improving construction environment avoiding high temperature wet under construction; put the net air compressor moisture; try not to use lacquer and humid season construction, such as the need construction available Whitewater (lacquer moisture agent) spraying.
Wrinkle: paint a sharp contraction in the drying process into many wrinkles phenomenon. The main reason is: the film is too thick, the outer dry quit; the first Road paint is dry, spray both the second track paint without hard work; improper use of diluent. Corrective measures: improving construction methods, appropriate to reduce the film thickness; to be the first Road paint dry and then coated with a second channel; currently on the market are mostly shoddy diluent coking benzene, benzene mixed dissolving power, in most reconcile alkyd paint prone to wrinkle, even when serious catch the bottom coating paint off. Recommended regular alkyd thinner or mineral spirits (solvent oil 200 #).