C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
C03B 37/014 (2006.01) C03B 19/10 (2006.01) C03B 19/14 (2006.01)
Patent
CA 2295808
The present invention is directed to a method for making silica. A liquid siloxane-containing feedstock capable of being converted by thermal oxidative decomposition to SiO2 is provied and introduced directly into the flame of a combustion burner, which converts the compound to silica, thereby forming finely divided amorphous soot. The soot is vaporized at the conversion and/or deposition site where the liquid is converted into silica by atomizing the liquid with a stream of oxygen gas, or a mixture of oxygen gas and other gas, such as nitrogen. The amorphous soot is deposited on a receptor surface where, either substantially simultaneously with or subsequently to its deposition, the soot is consolidated into a body of fused silica glass, such as an optical fiber preform.
L'invention porte sur un procédé d'obtention de silice consistant à convertir un apport liquide contenant de la siloxane susceptible d'être converti en SiO¿2? par décomposition oxydative thermique en l'introduisant directement dans la flamme d'un brûleur à combustion qui convertit le composé en silice et forme de la suie amorphe finement divisée. La suie est vaporisée dans le site de conversion et/ou d'oxydation où le liquide est converti en silice par atomisation du liquide dans un courant d'oxygène gazeux ou un mélange d'oxygène gazeux et d'un autre gaz tel que l'azote. La suie amorphe est déposée sur une surface réceptrice sur laquelle soit pendant, soit après le dépôt, la suie se consolide en un corps de verre de silice fondu tel qu'une préforme de fibre optique.
Blackwell Jeffery L.
Fu Xiaodong
Hawtof Daniel W.
Powers Dale R.
Corning Incorporated
Gowling Lafleur Henderson Llp
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