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Comparison of different test methods for determining the mar resistance of clearcoats

✍ Scribed by G. Wagner; M. Osterhold

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 180 KB
Volume: 30
Category: Article
ISSN: 0933-5137
DOI: 10.1002/(sici)1521-4052(199910)30:10<617::aid-mawe617>3.0.co;2-j

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✦ Synopsis

This paper presents a number of different methods for determining the mar resistance of automotive clearcoats. The various methods are compared on the basis of measurements on different clearcoat systems and the results discussed with other physical parameters (microhardness, crosslinking density). Micro-scratching tests (individual scratches) were also carried out in addition to more practical tests (simulated car washes).

In diesem Artikel werden verschiedene Verfahren zur Bestimmung der Kratzfestigkeit von Klarlacken fu Èr die Automobillackierung vorgestellt. Die Methoden werden auf Basis von Messungen an unterschiedlichen Klarlacksystemen untereinander verglichen und die Ergebnisse mit anderen physikalischen Parametern (Mikroha Èrte, Vernetzungsdichte) diskutiert. Neben mehr praxisorientierten Pru Èfungen (Waschstraûen-Simulation) wurden auch Micro-Scratch-Untersuchungen (Einzel-Kratzer) durchgefu Èhrt.

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