Test Methods

Peel Adhesion

An essential aspect of protective coatings is how well they adhere to the substrate to which they are applied.

The determination of adhesive strength of a coating to its substrate can be conducted by the peel resistance test using a constant rate of force provided by a tensile machine or a hanging mass test set up. Peel adhesion testing by a constant rate gives a quantitative value for the peel force required to peel the coating sleeve. An important factor in this test is assessment of the mode of failure, which helps determine the weakest adhesion point within the coating system.

Peel Adhesion testing in progressPeel Adhesion testing in progress
Peel Adhesion testing in progress

Sample Requirements:

Pipe ring approximately 6” (150 mm) long and < 8” (200 mm) diameter
Panel maximum 6” (150 mm) x 6” (150 mm) x pipe wall thickness flat

Test Capabilities:

Ambient test temperature
Applied mass: 0.3 kg, 2.0 kg, or 15.3 kg
Speed: from 0 mm / min to at least 200 mm / min

Test Methods:

CSA Z245.21 Section 12.4 and 12.5
ISO 813
ISO 21809-1 Annex C
ISO 21809-3 Annex H

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