Axisymmetric peel test for adhesion measurement of polymer coatings

作者：DeNolf Garret C; Haack Larry; Holubka Joe; Straccia Ann; Blohowiak Kay; Broadbent Chris; Shull Kenneth R^*

来源：Journal of Polymer Science Part B: Polymer Physics , 2012, 50(24): 1706-1712.

DOI：10.1002/polb.23195

• adhesion
• coatings
• membranes

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.

• 出版日期2012-12-1
• 单位西北大学