For example, for special purposes, the coating can be applied directly to the face of a test dolly. To avoid distortion of the substrate during the tensile test, it is common to use a sandwich construction. thin metal, plastics and wood, or rigid, e.g. Different procedures are given according to whether the substrate is deformable, e.g. The test can be applied using a wide range of substrates. It is most useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion. These test methods have been found useful in comparing the adhesion behaviour of different coatings.
method C: using dollies, one as a painted substrate. method B: testing from one side only, using a single dolly, suitable for rigid substrates only method A: using two dollies, suitable for testing both rigid and deformable substrates
Figure 1 Extract from ISO 4624 ASTM D 4541 states that the adhesive is for securing the fixture to the coating and that it does not affect any coating properties. The procedures given in this part of ISO 16276 are based on methods used with.
ISO 16276-1:2007 specifies procedures for assessing the fracture strength of a protective paint coating of any thickness on a steel substrate of thickness not less than 10 mm. The relevant section is reproduced as Figure 1 below. PDF: std 2 63: Paper: CHF 63 Buy Convert Swiss francs (CHF) to your currency. This document specifies three methods for determining the adhesion by carrying out a pull-off test on a single coating or a multi-coat system of paint, varnish or related product. ISO 4624 has guidance on the selection of suitable adhesives.
