Waterborne(WB)UV chemistry has shown significant growth in interior industrial wood markets because the technology provides excellent performance,low solvent emissions and increased production efficiency.UV coatings systems offer the end user the benefits of outstanding chemical and scratch resistance,excellent block resistance,very low VOCs and a small equipment footprint with less storage space required.These systems have properties that compare favorably with two-component urethane systems without the complications of hazardous crosslinkers and pot life concerns.The overall system is cost effective because of increased production speeds and lower energy costs.These same advantages can be beneficial for factory-applied exterior applications including window and door frames,siding and other millwork.These market segments conventionally utilize acrylic emulsions and polyurethane dispersions because they have excellent gloss and color retention,and demonstrate superior durability.In this study,polyurethane-acrylic resins with UV functionality have been evaluated according to industry specifications for both interior and exterior industrial wood applications.
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