Polyurethane epoxy floor coating roughness causes and solutions
polyurethane epoxy floor coating rough behavior occurs for several reasons:
first, the construction environment and floor paint coating drying environment clean, dust, dust is still in the stream on the flat stages of the film, eventually leading to adhesion of dust on the floor paint coating and make the film appear rough.
Second, epoxy floor paint before the paint is not filtered, mixed with impurities, these mechanical impurities and coatings are coating on coated, when drying mechanical impurities like highlighted on the paint coating, finally lead to rough film phenomenon.
third, polyurethane epoxy floor paint is a two-component or multi-component coating, are chemically cured paint, curing agent was added so that when the paint, paint beginning chemistry, floor paint coating viscosity increases slowly, began to gel after a specific time, direct final curing film. When the paint begins to gel continued construction, floor paint coating may appear rough.
four, the construction site is too high, too fast thinner volatile, epoxy floor paint coating the coated has no leveling time begins on curing, so there will be rough.
a rough how to solve it?
construction site cleaning and drying the scene work, to prevent dust pollution of the epoxy floor paint coating. Before the construction, according to the product specification requirements, deployment of a good (according to the proportion of each component with a good paint, construction viscosity diluents adjusts to fit) paint coating, 120 mesh gauze after construction paint filter, to avoid phenomena of mechanical impurities caused by rubbing.
before the epoxy floor paint coating, according to coating construction time to calculate the amount of paint and pigment ratio and dilution and other follow-up, how many distribution, cannot match. If there are any paint coating of the gel cannot be used again. Swap with a suitable caliber gun, adjust the air pressure and proper spraying distance, and so on. Swap with a slow drying higher boiling point diluent.
dealing with the lower, start from the bottom according to the construction requirements to middle managers to eliminate the phenomenon of rough surface construction be sure to clean up the Middle before confirming that no dust after construction, so that you can solve the epoxy floor paint this kind of rough.