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High modulus high temperature glass fibersThe search for a new high-modulus, high-temperature glass fiber involved the preparation of 500 glass compositions lying in 12 glass fields. These systems consisted primarily of low atomic number oxides and rare-earth oxides. Direct optical measurements of the kinetics of crystallization of the cordierite-rare earth system, for example, showed that the addition of rare-earth oxides decreased the rate of formation of cordierite crystals. Glass samples prepared from these systems proved that the rare-earth oxides made large specific contributions to the Young's modulus of the glasses. The best glasses have moduli greater than 21 million psi, the best glass fibers have moduli greater than 18 million psi, and the best glass fiber-epoxy resin composites have tensile strengths of 298,000 psi, compressive strengths of at least 220,000 psi, flexural strengths of 290,000 psi, and short-beam shear strengths of almost 17,000 psi.
Document ID
19740037993
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Bacon, J. F.
(United Aircraft Research Laboratories East Hartford, Conn., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
Thermodynamics And Combustion
Meeting Information
Meeting: Symposium on High-temperature and flame-resistant fibers
Location: New York, NY
Start Date: August 28, 1972
End Date: August 29, 1972
Accession Number
74A20743
Distribution Limits
Public
Copyright
Other

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