Abstract
AbstractThe determination of residual stresses in thin polymer coatings is important for the prediction of failure due to delamination and cracking. If the internal tensile stresses exceed the cohesive strength of the solid coating, cracking may occur which can result in coating ‐ substrate delamination. This is especially important in the coatings and electronics industries in which coating reliability is central to the performance of a product. There are three primary causes of residual stresses in coatings, 1.) Chemical reactions in which a condensation molecule is evolved and given off during processing, 2.) Evaporation of solvent or carrier solution during drying, and 3.) Mismatch in coefficients of thermal expansion between the substate and the coating.
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