| 摘要 |
PROBLEM TO BE SOLVED: To provide a glass fiber composition capable of easily producing a fine glass filament.SOLUTION: There is provided a glass fiber composition which includes, by mass percent expressed in terms of oxide, 50 to 60% of SiO, 10 to 16% of AlO, 0 to 8% of BO, 0 to 5% of MgO, 16 to 30% of CaO, 0.1 to 2% of SrO, 0.1 to 2% of BaO, 22 to 30% of MgO+CaO+SrO+BaO, 0 to 2% of NaO, 0 to 2% of KO, 0 to 2% of LiO+NaO+KO and 0 to 3% of PO. |
