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The correlation between residual stresses and delamination behavior of polymer coatings
Author(s) -
Farris RICHARD J.,
Goldfarb JAY,
Maden MICHELE A.
Publication year - 1993
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19930680107
Subject(s) - materials science , delamination (geology) , residual stress , coating , composite material , cracking , polymer , thermal expansion , ultimate tensile strength , substrate (aquarium) , evaporation , condensation , residual , paleontology , oceanography , tectonics , physics , subduction , biology , geology , thermodynamics , algorithm , computer science
The 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.