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

A glass composition of the present disclosure includes, in wt%, 50 ≤ SiO2≤ 56, 20 ≤ B2O3≤ 30, 10 ≤ Al2O3≤ 20, 3.5 ≤ MgO + CaO ≤ 10, and 0 ≤ R2O ≤ 1.0, further includes Fe2O3, and has a permittivity of less than 5.0 at a frequency of 1 MHz. R is at least one element selected from Li, Na, and K. The g...

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Bibliographische Detailangaben
Hauptverfasser:	INAKA Yoshiyuki, SEKIDA Tomoki, HAYASHI Koji, SAWAI Riku, NISHINAKA Daisuke, MIYAZAKI Takaharu, NAWA Yoshito
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	A glass composition of the present disclosure includes, in wt%, 50 ≤ SiO2≤ 56, 20 ≤ B2O3≤ 30, 10 ≤ Al2O3≤ 20, 3.5 ≤ MgO + CaO ≤ 10, and 0 ≤ R2O ≤ 1.0, further includes Fe2O3, and has a permittivity of less than 5.0 at a frequency of 1 MHz. R is at least one element selected from Li, Na, and K. The glass composition of the present disclosure is a low-permittivity glass composition with which the occurrence of fiber breakage during fiber forming can be reduced even when glass fibers to be formed have a small fiber diameter, and the occurrence of defects such as fiber breakage and fluffing during processing of the glass fibers can be reduced.