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Nano-structured self-cleaning coated glasses: modelling and laboratory tests for fundamental knowledge on thin film coatings, EC normalisation and customer benefits

Objectif

Superhydrophobic or hydrophobia coatings have been used in the recent years for several applications, such as easy-to-clean surfaces. Since 2001, photocatalytic self-cleaning glazing have been launched on the European market. These latter products are base d on the photocatalytic property of a thin layer of TiU2 deposited at the surface of the glass. When exposed to UVA radiations, TÌ02 reacts with the oxygen and water molecules present in the atmosphere to produce free radicals leading to oxidative species. These species are able to degrade organic stains adsorbed on the surface into volatile molecules. Both technologies gather products designated by the general term of "self-cleaning". At the moment, self-cleaning glazing are only tested according to existi ng appropriate national or international standards to qualify optical and energetic properties. In building applications for example, these new glazing must pass the EN-1096 standard. But there are no certified nor normalized tests to evaluate the self-cle aning performances of these products. hi order to define appropriate tests for the self-cleaning properties of nano-structured surfaces, the project will be based on three main achievements. - The acquisition of a thorough understanding of the real soiling mechanisms at microscale level on glass and self cleaning coated glass. - The enhancement of fundamental knowledge on the interactions between self cleaning coating ability and pollutants, occurring at a nano scale level. The development of measurement me thods for self cleaning ability and the carrying out of a prenormative study on glass soiling and self cleaning glass. A certification test definition for self-cleaning properties, based on the benefits they bring to customers will be provided.

Appel à propositions

FP6-2002-NMP-1
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Coordinateur

SAINT-GOBAIN RECHERCHE SA
Adresse
39 Quai Lucien Lefranc
Aubervilliers
France

Participants (11)

SAINT-GOBAIN GLASS DEUTSCHLAND GMBH
Allemagne
Adresse
3-5 Viktoriaallee
Aachen
PILKINGTON GROUP LIMITED
United Kingdom
Adresse
Prescot Road
St Helens
UNIVERSITE CLAUDE BERNARD LYON 1
France
Adresse
43, Boulevard Du 11 Novembre 1918
Villeurbanne
UNIVERSITE DE LIEGE
Belgique
Adresse
Place Du 20 Aout, 7
Liege
STAZIONE SPERIMENTALE DEL VETRO
Italie
Adresse
Via Briati 10
Murano-venezia
FACULTES UNIVERSITAIRES NOTRE-DAME DE LA PAIX DE NAMUR
Belgique
Adresse
Rue De Bruxelles 61
Namur / Namen
UNIVERSITE PARIS XII - VAL DE MARNE
France
Adresse
61 Avenue Du General De Gaulle
Creteil
COMMISSARIAT A L'ENERGIE ATOMIQUE
France
Adresse
Bâtiment Le Ponant D - 25 Rue Leblanc
Paris
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
France
Adresse
Rue Michel Ange 3
Paris
DEUTSCHES WOLLFORSCHUNGSINSTITUT AN DER RWTH AACHEN E.V.
Allemagne
Adresse
Veltmanplatz 8
Aachen
ALMA CONSULTING GROUP SAS
France
Adresse
Domaine Des Bois D'houlbec
27120 Houlbec-cocherel