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Novel self-cleaning coatings

: Wanner, Matthias; Aktas, Lukas; Schauer, Thadeus

Fulltext urn:nbn:de:0011-n-1631617 (648 KByte PDF)
MD5 Fingerprint: 72ff1340fa2ba4890075538678ef2091
Created on: 26.5.2011

Hilt, M.:
EC European Coatings Congress 2011. CD-ROM : Nuremberg, Germany, 28-30 March 2011, Congress Proceedings
Hannover: Vincentz Network, 2011
Paper 9.2, 10 pp.
European Coatings Congress <2011, Nürnberg>
European Coatings Show <2011, Nürnberg>
Conference Paper, Electronic Publication
Fraunhofer IPA ()
selbstreinigende Schicht; Selbstreinigung; self-cleaning coatings; UV; Reflexion; Beschichtung; Infrarottechnik

Decorative and functional coatings with self-cleaning or easy-to-clean properties are presently in growing demand. These properties can be achieved according to the concepts of superhydrophobicity, superhydrophilicity or photocatalysis. The self-cleaning or easy-to-clean properties of such coatings are however significantly degraded, when the coated surfaces are exposed to chemical or mechanical loading, as by contact with surfactants or by scratching, which changes the surface tension and topography. The present attempt aimed at the generation of surfaces with self-cleaning properties, which are less prone to scratching or contact with surfactants. The underlying concept bases on the use of UV/IR-reflecting additives in coatings which cause the weakening or degradation of a dirt bonding. The self-cleaning properties of coatings are evaluated by outdoor exposure and a new laboratory short-time test. A further focus is also on the UV protection of coatings.