GLASS COMPOSITION, GLASS FIBER, GLASS CLOTH, AND GLASS FIBER PRODUCTION METHOD

• Main Authors: KURACHI Junji, HATTORI Kohji, FUKUCHI Hidetoshi, NAKAMURA Aya, SAWAI Riku, MIYAZAKI Takaharu, NAWA Yoshito
• Format: Patent
• Language: English; French; Japanese
• Published: 24.12.2020
• Subjects: 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

The present invention provides a novel glass composition which has low permittivity and which is suitable for mass-production. The glass composition provided by the present invention contains, represented in percentages by weight, for instance, 40 ≤ SiO2 ≤ 60, 25 ≤ B2O3 ≤ 45, 0 < Al2O3 ≤ 18, 0 < R2O ≤ 5, and 0 ≤ RO ≤ 12, while achieving at least one from among: i) SiO2+B2O3 ≥ 80, and SiO2+B2O3+Al2O3 ≤ 99.9, and ii) SiO2+B2O3 ≥ 78, and SiO2+B2O3+Al2O3 ≤ 99.9, 0 < RO < 10. Another glass composition provided by the present invention contains SiO2, B2O3, Al2O3, and R2O, with the respective ratios thereof falling within the same ranges as those given above, and 3 < RO < 8, while achieving SiO2+B2O3 ≥ 75, and SiO2+B2O3+Al2O3 < 97. However, R2O = Li2O+Na2O+K2O, and RO = MgO+CaO+SrO. L'invention fournit une nouvelle composition de verre de faible constante diélectrique, et adaptée à une production de masse. Une composition de verre fournie par l'invention contient , en % en masse, par exemple, ４０≦ＳｉＯ2≦６０, ２５≦Ｂ2Ｏ3≦４５, ０＜Ａｌ2Ｏ3≦１８, ０＜Ｒ2Ｏ≦５ et ０≦ＲＯ≦１２, et est telle que ｉ）ＳｉＯ2＋Ｂ2Ｏ3≧８０ et ＳｉＯ2＋Ｂ2Ｏ3＋Ａｌ2Ｏ3≦９９．９ et/ou ｉｉ）ＳｉＯ2＋Ｂ2Ｏ3≧７８, ＳｉＯ2＋Ｂ2Ｏ3＋Ａｌ2Ｏ3≦９９．９ et０＜ＲＯ＜１０, est réalisé. Une autre composition de verre fournie par l'invention contient, ＳｉＯ2, Ｂ2Ｏ3, Ａｌ2Ｏ3 ainsi que Ｒ2Ｏ dont les teneurs sont identiques à ci-dessus, et ３＜ＲＯ＜８, et est telle que ＳｉＯ2＋Ｂ2Ｏ3≧７５ et ＳｉＯ2＋Ｂ2Ｏ3＋Ａｌ2Ｏ3＜９７, sont réalisés. Cependant, Ｒ2Ｏ＝Ｌｉ2Ｏ＋Ｎａ2Ｏ＋Ｋ2Ｏ et ＲＯ＝ＭｇＯ＋ＣａＯ＋ＳｒＯ, sont satisfaits. 本開示は、誘電率が低く、量産に適した新規なガラス組成物を提供する。提供されるガラス組成物は、重量％で表示して、例えば、４０≦ＳｉＯ2≦６０、２５≦Ｂ2Ｏ3≦４５、０＜Ａｌ2Ｏ3≦１８、０＜Ｒ2Ｏ≦５、０≦ＲＯ≦１２を含み、ｉ）ＳｉＯ2＋Ｂ2Ｏ3≧８０、ＳｉＯ2＋Ｂ2Ｏ3＋Ａｌ2Ｏ3≦９９．９、ｉｉ）ＳｉＯ2＋Ｂ2Ｏ3≧７８、ＳｉＯ2＋Ｂ2Ｏ3＋Ａｌ2Ｏ3≦９９．９、０＜ＲＯ＜１０の少なくとも１つが成立する。提供される別のガラス組成物は、含有率が上記と同じ範囲のＳｉＯ2、Ｂ2Ｏ3、Ａｌ2Ｏ3、Ｒ2Ｏと３＜ＲＯ＜８とを含み、ＳｉＯ2＋Ｂ2Ｏ3≧７５、ＳｉＯ2＋Ｂ2Ｏ3＋Ａｌ2Ｏ3＜９７が成立する。ただし、Ｒ2Ｏ＝Ｌｉ2Ｏ＋Ｎａ2Ｏ＋Ｋ2Ｏ、ＲＯ＝ＭｇＯ＋ＣａＯ＋ＳｒＯである。