Axisymmetric peel test for adhesion measurement of polymer coatings

Garret C. Denolf, Larry Haack, Joe Holubka, Ann Straccia, Kay Blohowiak, Chris Broadbent, Kenneth R. Shull*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1706-1712
Number of pages7
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume50
Issue number24
DOIs
StatePublished - 2012

Keywords

  • adhesion
  • coatings
  • membranes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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