Abstract
The interfacial adhesive shear strengths of epoxy and acrylate coatings on glass substrates were measured by the indentation and lap shear tests. The lap shear strengths were about an order of magnitude less and exhibited considerably more variability than those measured by indentation. It is believed that the lap shear strength is controlled by large processing flaws (pores in this study); whereas, the indentation test measures the “intrinsic” strength of the coating.
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Ritter, J.E., Rosenfeld, L., Lin, M.R. et al. Interfacial Shear Strength of Thin Polymeric Coatings on Glass. MRS Online Proceedings Library 130, 237–242 (1988). https://doi.org/10.1557/PROC-130-237
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DOI: https://doi.org/10.1557/PROC-130-237