Glass compositions having high ki values and fibers therefrom

Details Glass compositions having high ki values and fibers therefrom Glass compositions having high ki values and fibers therefrom

C - Chemistry, Metallurgy

03

C

C03C 13/00 (2006.01) C03C 3/091 (2006.01)

Patent

CA 2251294

A fiberizable glass composition which has a KI value 40, while possessing acceptable processing properties such as viscosity and liquidus temperatures is provided. The glass composition processes well in the furnace with acceptably low levels of foaming and is readily fiberizable. The glass has a high boron content, a high soda content, and contains only small amounts of alumina. Further, the glass contains small amounts of barium sulfate which improves the durability of the glass fibers in use.

Compositions en verre défibrable ayant des valeurs KI supérieures à 40 et dont des propriétés de mise en oeuvre telles que la viscosité et la température dite "Liquidus" restent dans des limites acceptables. La composition en verre supporte bien le traitement au four, présente des niveaux suffisamment bas de moussage et est immédiatement défibrable. Le verre a une teneur élevée en bore et en soude et ne contient que peu d'alumine. De plus, la durabilité des fibres de verre lors de l'utilisation se trouve améliorée grâce à une faible teneur en sulfate de baryum.

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