Axisymmetric peel test for adhesion measurement of polymer coatings |
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| Authors: | Garret C. DeNolf Larry Haack Joe Holubka Ann Straccia Kay Blohowiak Chris Broadbent Kenneth R. Shull |
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| Affiliation: | 1. Department of Materials Science and Engineering, Northwestern University, Evanston, Ilinois;2. Ford Research and Advanced Engineering, Ford Motor Company, Dearborn, Michigan;3. Boeing Research and Technology, Boeing Company, Seattle, Washington |
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| Abstract: | A novel axisymmetric peel test for measuring the adherence of coatings has been developed. The method utilizes a thin elastomeric membrane as a support for an uncured coating. Application of a pressure differential across this membrane brings the coating into contact with the substrate of interest, allowing it to cure while in contact with the substrate. The peel energy of the fully cured coating is determined by the measured peel force and by the geometry at the peeling front. Use of the test is illustrated with a model glassy polyurethane coating on an aluminum substrate. We show that the test is ideally suited for testing the effects of substrate preparation and cure conditions on the resultant coating adhesion. The upper limit on the adhesion strength that we were able to measure was about 50 J/m2, a limit that is determined by the tensile strength of the coating. © 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012 |
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| Keywords: | adhesion coatings membranes |
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