A transparent hybrid organic–inorganic waterborne coating was evaluated for the protection of clay bricks. The nanocomposite film was prepared by combining an environmentally friendly process based on UV-curing of water-based acrylic resins and a mild thermal treatment to form nanosilica in situ from alkoxysilane precursors. Coated and uncoated facing bricks were compared by scanning electron microscopy, surface profilometry, water wettability, and capillary rise tests. The hybrid coatings act as a moderate water repellent; interestingly, no appreciable alteration of the aesthetic properties of the brick was observed, in particular no gloss or color change appeared after the treatment.
|Titolo:||Characterization of a hybrid nano-silica waterborne polyurethane coating for clay bricks|
|Data di pubblicazione:||2016|
|Digital Object Identifier (DOI):||10.1007/s11998-015-9758-0|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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|Post print_Journal of Coatings Technology and Research.pdf||Articolo principale||2. Post-print||Non Pubblico - Accesso privato/ristretto||Administrator Richiedi una copia|
|CHARACTERIZATION OF A HYBRID NANO-SILICA WATERBORNE POLYURETHANE COATING FOR CLAY BRICKS_ REVISED MANUSCRIPT.pdf||Revised manuscript||2. Post-print||PUBBLICO - Tutti i diritti riservati||Visibile a tuttiVisualizza/Apri|