GLASS COMPOSITION, GLASS FIBER, GLASS CLOTH, AND METHOD FOR PRODUCING GLASS FIBER

• Main Authors: NAKAMURA, Aya, KURACHI, Junji, HATTORI, Kohji, FUKUCHI, Hidetoshi, SAWAI, Riku, NAWA, Yoshito, MIYAZAKI, Takaharu
• Format: Patent
• Language: English
• Published: 22.12.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; ORGANIC MACROMOLECULAR COMPOUNDS; PRINTED CIRCUITS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present disclosure provides a novel glass composition that has a low permittivity and is suitable for mass production. A glass composition provided satisfies, in wt %, for example, 40≤SiO2≤60, 25≤B2O3≤45, 0<Al2O3≤18, 0<R2O≤5, and 0≤RO≤12, and satisfies at least one of: i) SiO2+B2O3≥80 and SiO2+B2O3+Al2O3≤99.9; and ii) SiO2+B2O3≥78, SiO2+B2O3+Al2O3≤99.9, and 0<RO<10. Another glass composition provided includes SiO2, B2O3, Al2O3, R2O, and 3<RO<8 at the same contents as the above, and satisfies SiO2+B2O3≥75 and SiO2+B2O3+Al2O3<97, where R2O=Li2O+Na2O+K2O and RO=MgO+CaO+SrO.