Essai de résistance au vieillissement d’une
peinture
Test of Materials (Painting)
A test that consists in determining the duration of
a paint film over time relative to the various
forms of aggression it is likely to be subjected.
Test specimens are subjected to a succession of
various atmospheres constituting a cycle of
reference (rain cold wet heat
ultraviolet), usually four to eight cycles, until the
coating deteriorates; basically:
loss of brightness;
peeling (blistering and scaling);
variation of dye;
dusting.
This test is always supplemented by the wrench
strength test to check the adhesion of the coating
on its substrate. This value is then compared with
that of a witness test specimen. The loss of
adhesion is generaly 10 to 15 bar.
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