Pull-off adhesion testing is used to gage adhesive strength of the coating once applied and cured as per manufacturer’s guidelines. This test method is commonly used on the coatings after accelerated exposure testing and in the field. The mode of failure and the pull-off pressure obtained can be crucial in confirming proper surface preparation and coating application as well as understanding the performance of a coating. Additionally, evaluating pull-off adhesion before and after different lengths of exposure can go a long way in estimating adhesion retention and can be a crucial factor in product development. One challenge to this test method is the potential variability in results which can come from multiple factors. This paper will attempt at evaluating the extent of variability introduced into this test from different factors.

Subject
Abrasive blasting, Test methods, Coating application, Coatings, Materials, Industries, Pull off adhesion test, Variability, Mechanical failure, Equipment, Dry film thickness, Adhesion, Samples
Keywords:
test methods, coatings performance, coating testing, coating failures
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2023
Association for Materials Protection and Performance (AMPP)
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