SUPER NON-WETTING, ANTI-FINGERPRINT COATINGS FOR GLASS

Glass articles with surfaces that are both super-hydrophobic and super-oleophobic, and methods for making such articles are described. The article surfaces having contact angles of sessile drops of water and oil greater than 150° and low wetting angle hysteresis leading to low sliding angle of liqui...

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Bibliographische Detailangaben
Hauptverfasser:	CARRE, ALAIN R, LACARRIERE, VALERIE C
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY CLEANING CLEANING IN GENERAL GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PREVENTION OF FOULING IN GENERAL PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TRANSPORTING
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Beschreibung
Zusammenfassung:	Glass articles with surfaces that are both super-hydrophobic and super-oleophobic, and methods for making such articles are described. The article surfaces having contact angles of sessile drops of water and oil greater than 150° and low wetting angle hysteresis leading to low sliding angle of liquid water or oil drops. In some embodiments the water and oil contact angles are greater than 170°. Said glass article comprises a glass substrate having a surface with micro- roughness of >300 nm (rms) silica nanostructure particles deposited on the roughened surface and a selected perfluoroalkyl-Si coating on the micro-rough surface and nanostructure particles deposited thereon. L'invention concerne des articles en verre qui sont super-hydrophobes et superoléophobes, et des procédés de fabrication de tels articles. Les surfaces des articles ont des angles de contact de gouttes sessiles d'eau et d'huile supérieurs à 150° et une hystérésis de l'angle de mouillage faible qui conduit à un faible angle de glissement de gouttes d'eau ou d'huile liquides. Selon certains modes de réalisation, les angles de contact de l'eau et de l'huile sont supérieurs à 170°. Ledit article en verre comprend un substrat en verre présentant une surface à micro-rugosité > 300 nm (rms), des particules de nanostructure de silice déposées sur la surface rugueuse,et un revêtement de perfluoroalkyl-Si sélectionné sur la surface micro-rugueuse et les particules de nanostructure déposées sur ladite surface.