| 摘要 |
2232Embodiments of the present invention relate to glass compositions glass fibers formed from such compositions and related products. In one embodiment a glass composition comprises 58 62 weight percent SiO 14 17 weight percent AlO 14 17.5 weight percent CaO and 6 9 weight percent MgO wherein the amount of NaO is 0.09 weight percent or less. |
