GLASS FIBER AND MANUFACTURING METHOD THEREFOR

• Main Authors: FUKUCHI HIDETOSHI, NAKAMURA FUMI, OJITANI MASANORI
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• Subjects: BRAIDING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; NON-WOVEN FABRICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TEXTILES; TRIMMINGS; WADDING

To provide a glass fiber preventing filament cut during drawing and suitable for being manufactured for a long time stably.SOLUTION: There is provided a glass having a composition containing, by mass%, SiOof 45 to 80%, AlOof 0 to 40%, BOof 0 to 30%, MgO, CaO and SrO of each 0 to 30%, LiO of 0 to 4.5%, NaO and KO of each 0 to 5%, further SOsupplied to a glass raw material as sulfate of alkali metals or alkali earth metals of over 0 ppm and 70 ppm or less based on mass, and having β-OH of 0.02 mmor more and less than 0.55 mm. The glass for fiber preferably contains practically no As nor Sb.SELECTED DRAWING: None 【課題】引き出し時のフィラメント切れを防止し、長期間安定して製造することに適した、ガラス繊維の提供。【解決手段】質量％で、ＳｉＯ２を４５〜８０％、Ａｌ２Ｏ３を０〜４０％、Ｂ２Ｏ３を０〜３０％、ＭｇＯ、ＣａＯ、ＳｒＯをそれぞれ０〜３０％、Ｌｉ２Ｏを０〜４．５％、Ｎａ２Ｏ、Ｋ２Ｏをそれぞれ０〜５％含み、さらにアルカリ金属又はアルカリ土類金属の硫酸塩等としてガラス原料に供給されたＳＯ3を質量基準で０ｐｐｍを超え７０ｐｐｍ以下含む組成のガラスであり、そのβ−ＯＨを０．０２ｍｍ-1以上０．５５ｍｍ-1未満とする。繊維用ガラスはＡｓ及びＳｂを実質的に含有しないことが好ましい。【選択図】なし