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1.发明公开
公开(公告)号：EP4299539A1
公开(公告)日：2024-01-03
申请号：EP22759373.8
申请日：2022-02-09
IPC分类号： C03C13/02
摘要： Provided is a glass composition that enables glass fiber having excellent water resistance and dielectric characteristics to be obtained therefrom and has a sufficient working temperature range. The glass composition includes 59.00 to 65.00% by mass of SiO 2 , 16.00 to 26.00% by mass of B 2 O 3 , 7.00 to 14.00% by mass of Al 2 O 3 , 0 to 5.00% by mass of CaO, 0 to 4.00% by mass of MgO, 0 to 6.00% by mass of SrO, 0.10 to 5.00% by mass of TiO 2 , 0 to 2.00% by mass of F 2 and Cl 2 in total, less than 0.20% by mass of P 2 O 5 , and less than 1.00% by mass of Na 2 O, K 2 O and Li 2 O in total, wherein the ratio of TiO 2 to the total content of CaO, MgO, and SrO (TiO 2 /(CaO + MgO + SrO)) is from 0.66 to 4.00, and the content SI of SiO 2 and the content A of Al 2 O 3 satisfy the following formula (1): 1.00 ≤ 1000 × A / SI 2 ≤ 4.65
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2.发明公开
公开(公告)号：EP3617164A1
公开(公告)日：2020-03-04
申请号：EP18853783.1
申请日：2018-07-20
IPC分类号： C03C13/00
摘要： [Problem to be Solved]
To provide a glass composition for glass fiber having a low dielectric constant and a low dielectric loss tangent, suppressing occurrence of phase separation, and reducing viscosity at high temperatures.
[Solution]
The glass composition for glass fiber includes: SiO 2 in the range of 52.0 to 59.5% by mass; B 2 O 3 in the range of 17.5 to 25.5% by mass; Al 2 O 3 in the range of 9.0 to 14.0% by mass; SrO in the range of 0.5 to 6.0% by mass; MgO in the range of 1.0 to 5.0% by mass; and CaO in the range of 1.0 to 5.0% by mass, and includes F 2 and Cl 2 in the range of 0.1 to 2.5% by mass in total, with respect to the total amount.-
3.发明公开
公开(公告)号：EP4438571A1
公开(公告)日：2024-10-02
申请号：EP23811472.2
申请日：2023-04-05
IPC分类号： C03C13/00 , C03C13/02 , C08J5/08 , D03D1/00 , D03D15/267
CPC分类号： D03D1/00 , C03C13/00 , C08J5/08 , D03D15/267
摘要： Provided is a glass composition for glass fibers with a low coefficient of linear thermal expansion, a high elastic modulus, a low liquid phase temperature, a slow crystallization rate, and suppressed phase separation. The glass composition includes 50.0 to 70.0% by mass of SiO2, 10.0 to 30.0% by mass of Al2O3, 8.0 to 25.0% by mass of ZnO, 0.0 to 8.0% by mass of MgO, 0.0 to 5.0% by mass of CaO, 0.0 to 8.0% by mass of P2O5, 0.0 to 2.5% by mass of TiO2, and 0.0% by mass or more and less than 1.0% by mass in total of Li2O, Na2O, and K2O, and when the contents of SiO2, Al2O3, ZnO, MgO, CaO, and P2O5 are defined as S, A, Z, M, C, and P, respectively, (M + C)/Z is 0.46 or less and the S, A, and P satisfy the following formula (1-1): 28.0 ≤ {(S - P) × (A - P)}1/2 ≤ 36.9 ··· (1-1).
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4.发明公开
公开(公告)号：EP4410750A1
公开(公告)日：2024-08-07
申请号：EP22929932.6
申请日：2022-10-31
发明人： ITO, Jun , KURITA, Tadashi , NAKAMURA, Koichi , NONAKA, Takashi , HIRAYAMA, Norio , UNUMA, Hidero
摘要： To provide a glass composition for glass fiber that can obtain glass fiber which includes biosolubility, which can achieve long fiber formation, and which can include a low dielectric tangent. The glass composition for glass fiber of the present invention includes SiO2 in the range of 36.0% by mass or more and less than 48.0% by mass, B2O3 in the range of 18.0% by mass or more and 32.0% by mass or less, Al2O3 in the range of 12.0% by mass or more and 24.0% by mass or less, P2O5 in the range of 2.5% by mass or more and 8.9% by mass or less, and CaO and MgO in the range of 5.0% by mass or more and 13.0% by mass or less in total, with respect to the total amount.
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5.发明公开
公开(公告)号：EP4299540A1
公开(公告)日：2024-01-03
申请号：EP22759379.5
申请日：2022-02-09
IPC分类号： C03C13/02
摘要： Provided is a glass composition for glass fiber that enables glass fiber having excellent water resistance and excellent dielectric characteristics in a high-frequency region to be obtained therefrom and has a lowered 1000 poise temperature. The glass composition for glass fiber includes 50.00 to 61.00% by mass of SiO 2 , 16.00 to 27.00% by mass of B 2 O 3 , 7.00 to 14.00% by mass of Al 2 O 3 , 0.20 to 4.00% by mass of P 2 O 5 , 0.50 to 5.00% by mass of TiO 2 , 0.10 to 5.00% by mass of CaO, 0 to 4.00% by mass of MgO, and 0 to 2.00% by mass of F 2 and Cl 2 in total, with respect to the total amount of the glass composition for glass fiber, and the content S of SiO 2 , the content A of Al 2 O 3 , the content P of P 2 O 5 , the content T of TiO 2 , the content C of CaO, and the content M of MgO satisfy the following formula (1): 3.65 ≤ S / A 2 × P × T 1 / 2 / C + M 3 ≤ 8.25
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公开(公告)号：EP3560987A1
公开(公告)日：2019-10-30
申请号：EP17775631.9
申请日：2017-06-29
IPC分类号： C08J5/08 , C03C13/02 , C08K3/40 , C08L101/00
摘要： Provided is a glass fiber-reinforced resin molded article having high tensile strength and high impact strength in combination with a low dielectric constant and a low dissipation factor. The glass fiber-reinforced resin molded article contains: 10 to 90 mass% of a glass fiber; and 90 to 10 mass% of a resin based on the total amount of the glass fiber-reinforced resin molded article, wherein the glass fiber has composition containing: 52.0 to 57.0 mass% of SiO 2 ; 13.0 to 17.0 mass% of Al 2 O 3 ; 15.0 to 21.5 mass% of B 2 O 3 ; 2.0 to 6.0 mass% of MgO; 2.0 to 6.0 mass% of CaO; 1.0 to 4.0 mass% of TiO 2 ; and less than 1.5 mass% of F 2 , and the total amount of Li 2 O, Na 2 O, and K 2 O is less than 0.6 mass%, based on the total amount of the glass fiber, and the glass fiber has a number-average fiber length of 30 to 5000 µm.
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