Presented by Howells Henry, University of Oxford
This short communication reports on an on-going study of the mechanical properties of PECVD SiOx coatings on PET, primer coated PET and PEN substrates. Preliminary results have found that the internal stress and strain of the coatings are all compressive and relatively low. There was no significant difference in either the stress or strain between the films. The cohesion of the deposited coating on PEN is the strongest and on PET is the weakest. It was also found that the adhesive strength between the coating and primer coated PET is greater than for either plain PET or PEN substrates.
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