Torsion Delamination Test, A New Method to Quantify the Adhesion of Coating: Application to Car Coatings

A torsion delamination test was developed to characterize the interfacial cohesion of multilayer organic coatings. It consists in applying an increasing torque on a hexagonal plot directly glued on the coating until delamination occurs. The test is quantitative and allows the calculus of the shear stress that generates delamination. This torsion test was successfully used to test the adhesion of multilayer car coatings. The delaminating interfaces were directly observed via optical and electron microscopy. We have shown that the critical delaminating shear stress and the delaminating interface are dependent of both the primer and of the curing temperatures respectively. Furthermore, an interpretation of the delamination process is proposed.

Explore further

Volume 110, September 2017, Pages 134–139


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.


You have successfully subscribed to the newsletter

There was an error while trying to send your request. Please try again.

Paints and Coatings Expert will use the information you provide on this form to be in touch with you and to provide updates and marketing.
%d bloggers like this: