公开(公告)号：US20230312394A1

公开(公告)日：2023-10-05

申请号：US18020292

申请日：2021-12-23

申请人： NITTO BOSEKI CO., LTD.

发明人： Takashi NONAKA ,  Jun ITO ,  Takahiro UTSUGI ,  Koichi NAKAMURA ,  Norio HIRAYAMA ,  Hidero UNUMA

IPC分类号： C03C3/091 ,  C03C13/00

CPC分类号： C03C3/091 ,  C03C13/00 ,  C03C2213/00

摘要： To provide a glass composition for glass fiber that includes biosolubility and can achieve long fiber formation. The glass composition for glass fiber of the present invention includes SiO2 in the range of 35.0 to 55.0% by mass, B2O3 in the range of 10.0 to 30.0% by mass, Al2O3 in the range of 14.5 to 30.0% by mass, and CaO and MgO in the range of 8.7 to 25.0% by mass in total, with respect to the total amount, and the content S of SiO2, the content B of B2O3, the content A of Al2O3, the content C of CaO, and the content M of MgO satisfy the following formula (1):







11.3
≤
S
×




C
+
M



/



A
+
B




≤
20.7




­­­(1)