Continuous glass fiber with improved thermal resistance
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United States of America Patent
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Sep 23, 2008
Grant Date -
Jun 16, 2005
app pub date -
Dec 4, 2002
filing date -
Dec 7, 2001
priority date (Note) -
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Abstract
The invention relates to a glass fiber, especially a continuous glass fiber, exhibiting improved thermal behavior. According to the invention, the glass fiber consists of SiO.sub.2 56.0 62.0%, Al.sub.2O.sub.3 11.0-15.0%, CaO 20.0-24.5%, TiO.sub.2 2.0 3.2%, MgO 0.2 0.4%, Na.sub.2O 0.05 0.2%, K.sub.2O 0 0.25%, Fe.sub.2O.sub.3 0.11 0.3%, SO.sub.3 0.01 0.05%. The retraction value of the fiber is less than 20% at 800.degree. C. and/or less than 80% at 850.degree.. The inventive fiber is produced according to a method wherein the difference between the glass melt liquidus temperature and the fiber formation temperature is the same as or great than 95.degree. C. The fiber can be used as filling material in sound absorbers for waste gases, in the production of shaped bodies and in the production of nets, fabrics or knitted fabrics.
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