Static and Dynamic Indentation Measurements on UV Curing Multicoat Systems

摘要

The wood coating and plastic flooring industries commonly use a basecoat (sealer) in conjunction with a topcoat (wear layer). In creating these systems one needs to consider the presence of two or more interfaces and the multiple UV dosing experienced by the basecoat. Performance test such as flex or abrasion resistance seldom give insight to the mode or loci of failure. These typical pass/fail tests do not provide enough information during early coating development for direction. Reported here are dynamic and static indentation studies on single and two coat systems on plastic substrates. These methods provide quantitative information which can be used to understand both chemical and processing dependent variables such as thickness, total incident radiation, adhesion and modulii effects.