High temperature stable continuous filament glass ceramic fibers
First Claim
1. A process for the production of high temperature stable glass fibers, comprising a) melting a ceramic powder feed to form a melt, and b) forming said melt into filaments, wherein said ceramic powder feed consists essentially ofi) about 67.5 to about 85 mole percent SiO2,ii) about 9.5 to about 20 mole percent Al2 O3,iii) about 5 to about 15.5 mole percent MgO,iv) about 0.5 to about 5 mole percent TiOx, wherein 0≦
- ×
≦
2, andv) 0 to about 5 mole percent ZrO2.
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Abstract
Composition and process for the preparation of high temperature stable continuous glass ceramic fibers with an upper temperature use limit of 2300° F. are provided. The compositional formulation, in mole percent, is 62-85% SiO2, 9.5-20% Al2 O3, 5-15.5% MgO, 0.5-5% TiOx, and 0-5% ZrO2. The continuous fibers are prepared by an economical direct melt method, and demonstrate high tensile strength, high Young'"'"'s modulus, and low linear thermal shrinkage characteristics.
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Citations
16 Claims
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1. A process for the production of high temperature stable glass fibers, comprising a) melting a ceramic powder feed to form a melt, and b) forming said melt into filaments, wherein said ceramic powder feed consists essentially of
i) about 67.5 to about 85 mole percent SiO2, ii) about 9.5 to about 20 mole percent Al2 O3, iii) about 5 to about 15.5 mole percent MgO, iv) about 0.5 to about 5 mole percent TiOx, wherein 0≦ - ×
≦
2, andv) 0 to about 5 mole percent ZrO2. - View Dependent Claims (2, 3, 4)
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5. A process for the production of high temperature stable continuous filament glass fibers, comprising a) melting a ceramic powder feed to form a melt, and
b) drawing said melt into continuous filaments, wherein said ceramic powder feed consists essentially of i) about 67.5 to about 85 mole percent SiO2, ii) about 9.5 to about 20 mole percent Al2 O3, iii) about 5 to about 15.5 mole percent MgO, iv) about 0.5 to about 5 mole percent TiOx, wherein 0≦ - ×
≦
2, andv) 0 to about 5 mole percent ZrO2. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification