GLASS FABRIC AND GLASS FIBER SHEET MATERIAL USING SAME
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United States of America Patent
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Dec 4, 2014
app pub date -
Dec 4, 2012
filing date -
Dec 6, 2011
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Abstract
The present invention provides a glass fabric excellent in strength and modulus of elasticity, and a glass fiber sheet material using the same. The glass fabric is obtained by weaving glass yarns produced by bundling the glass fibers of 3 to 6 pm in fiber diameter, spun from a molten glass prepared by melting a glass composition as a raw material for the glass fibers. The glass fibers have a composition wherein the content of SiO2 is 57.0 to 63.0% by mass, the content of Al2O3 is 19.0 to 23.0% by mass, the content of MgO is 10.0 to 15.0% by mass and the content of CaO is 5.5 to 11.0% by mass, based on the total amount of the glass fibers, and the ratio of the content of MgO to the content of CaO, MgO/CaO falls within a range from 0.8 to 2.0.
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