L. Klein—contributing editor
Effect of Mechanical and Chemical Wear on Soil Attachment and Cleanability of Sanitary Ware with Additional Coatings
Article first published online: 2 NOV 2010
© 2010 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 3, pages 951–958, March 2011
How to Cite
Piispanen, M., Kronberg, T., Areva, S. and Hupa, L. (2011), Effect of Mechanical and Chemical Wear on Soil Attachment and Cleanability of Sanitary Ware with Additional Coatings. Journal of the American Ceramic Society, 94: 951–958. doi: 10.1111/j.1551-2916.2010.04120.x
This work was financially supported by the Clean Surfaces 2002-2006 Technology Programme run by the Finnish Funding Agency of Technology and Innovation and the Graduate School of Materials Research.
- Issue published online: 11 MAR 2011
- Article first published online: 2 NOV 2010
- Manuscript No. 27569. Received February 15, 2010; approved August 13, 2010.
We studied three different types of additional coatings on sanitary ware glazes for their cleanability and resistance to mechanical and chemical wear. The additional coatings were two commercial fluoropolymer films, one experimental sol–gel-derived titania film, and an outer glassy layer fired on the substrate in two different ways. The surface chemical durability was tested by soaking them up to 7 days in a weakly alkaline detergent solution. In the mechanical testing, the surfaces were subjected to different abrasions, steel wool and a moist microfiber cloth rotated against the surfaces at a constant load. Surface topography was studied with white light confocal and scanning electron microscopy. We determined surface hydrophilicity and hydrophobicity by water contact angle measurements. The surfaces were stained with model dirt; they were then wiped with a moist microfiber cloth. The soil pick-up and removal were measured colorimetrically. The additional coatings did not markedly affect surface topology. Chemical wear by an alkaline detergent solution and mechanical abrasion by steel wool severely damaged the fluoropolymer films. Sol–gel-derived ceramic titania coating and double-glazed surfaces had satisfactory resistance to chemical and mechanical wears. Cleanability clearly increased for surfaces with the fluoropolymer and sol–gel-derived titania coatings. The glassy additional layers decreased the surface roughness, but did not affect attachment of the soil on the surfaces.