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Abstract
ABSTRACT The shaft-loaded blister test (SLBT) was used to investigate the adhesion between a model epoxy coating and a silicon oxide surface as a function of relative humidity. Critical and subcritical strain energy release rates were measured using specimens that incorporate reinforcing layers of Kapton® film. A simplified procedure that eliminates the need for video imaging to measure the blister radius and fracture energy was developed. A critical relative humidity level for adhesion loss was observed, in agreement with measurements that have been made previously in a number of polymeric systems. The SLBT was confirmed to be particularly attractive for fracture energy measurements on thin, strongly adhered coatings and films which otherwise tend to be problematic.
Published Version
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