摘要:
Cement-based photocatalytic composition, which comprises: (a) at least one cement binder; (b) at least one photocatalyst; (c) at least one cellulose ether; (d) at least one fluidizing agent; (e) at least one first calcareous filler in the form of particles of which at least 95% by weight has a size not greater than 100 μm; (f) at least one second calcareous filler in the form of particles of which at least 95% by weight has a size not greater than 30 μm; (g) at least one silane supported on an inorganic support in the form of powder. Such composition can be employed as a water paint for obtaining wall coatings with very low thickness, in particular the outdoor applications, which ensure a high and stable photocatalytic effect over time even with relatively low quantities of photocatalyst, generally lower than 10% by weight, with optimal results in terms of uniformity of the coating and resistance of the same to weathering agents.
摘要:
New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, recovering the product in particular conditions, drying it and calcining it. By operating in presence of sodium, a composite is obtained substantially free from titanium dioxide, containing limestone and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.
摘要:
A building product is described which is molded from a cementitious material mix, the building product including a bulk portion of cementitious material mix and a top stratum that includes a surface of the building product, the top stratum including cementitious material mix into which a cementitious material enhancing agent has been migrated. Also described are methods and apparatus for making such a building product.
摘要:
The present disclosure relates to a method of applying a NOx degrading composition on a concrete element(1), comprising providing a concrete element(1) having a surface(4), and applying a composition comprising photocatalytic titanium dioxide particles dispersed in a continuous phase on the surface (4) of said concrete element(1). The disclosure also relates to a concrete element(1) having NO x degrading properties.
摘要:
Bei zementgebunden, planebenen Dachplatten, die als Betondachstein oder als Faserzementplatte ausgebildet sind und eine hydrophile, dem Wettereinfluß ausgesetzte Oberseite aufweisen, wird eine Beeinträchtigung des optischen Erscheinungsbildes durch eingetrocknete Rückstände von aus den Dachplatten bei Beregnung ausgewaschenen Stoffen vermieden, indem die Unterseite der Dachplatte eine hydrophobe Beschichtung aufweist.
摘要:
Disclosed is a sanitary ware including a photocatalyst layer that has a high level of water resistance and abrasion resistance while maintaining a good photocatalytic activity. The sanitary ware includes a glaze layer and a photocatalyst layer provided on the glaze layer. The photocatalyst layer is an oxide film that is a co-fired product of a precursor of titanium oxide and a precursor of zirconium oxide and contains 65 to 90% by mass of titanium oxide and 10 to 35% by mass of zirconium oxide.