Sol-gel process for the manufacture of moulds for...

Details Sol-gel process for the manufacture of moulds for... Sol-gel process for the manufacture of moulds for...

B - Operations, Transporting

29

C

B29C 33/38 (2006.01)

Patent

CA 2632529

The invention relates to a sol-gel process for the manufacture of moulds (2) for use in photocatalysis. The invention also relates to industrial pultrusion, extrusion and moulding processes in which use of moulds (2) manufactured using the sol-gel process according to the invention is envisaged. The process provides for the provision of a sol which is gelled, drying of the gel with solvent extraction and then densification/sintering of the gel by heating with the formation of a transparent mould (2) having a glassy consistency which is capable of permitting the passage of UV rays.

L'invention concerne un procédé sol-gel pour la fabrication de moules (2) à utiliser en photocatalyse. L~invention concerne également les procédé industriels d~extrusion, d~extrusion par étirage et de moulage pour lesquels on envisage l~utilisation de moules (2) fabriqués par les procédé sol-gel selon l~invention. Le procédé permet d~obtenir d~un sol qui est gélifié, de sécher le gel avec extraction de solvant puis densification/frittage du gel en chauffant et de former d~un moule transparent (2) présentant une consistance vitreuse qui est capable de permettre le passage des UV.

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