7.1 UV LED Curable Resins for Industrial Wood Coatings
(Room 237-239)
10 Apr 18
9:00 AM
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9:30 AM
Tracks:
Session 7: Radiation Curing
UV LED lamps are being used more frequently as replacements for traditional mercury lamps because they have long life, don’t contain mercury and generate no ozone when used. Initially, UV LED was used in the graphic arts market but as lamp manufacturers continue to improve the energy output of their lamps, their use in Industrial Coatings lines is increasing. The use of water borne (WB) UV resins is also growing as low viscosity, sprayable coatings based on these materials can be made without using solvent or large amounts of diluents. This paper will review the cure performance of several commercial UV PUDs under a variety of conditions (photoinitiator, photoinitiator concentration, cure additives, energy density and peak irradiance) and compare them with the corresponding mercury lamp cured coatings. A new UV-PUD will also be included in the evaluation to show how structural elements can improve LED cure.