| 摘要 |
Mineral fibre compsn. comprises (in wt.%): 40-60 SiO2, 0.5-6 Al2O3, 20-45 CaO, 5-15 MgO, 3-12 Na2O, 0-10 K2O, 3-15 Na2O+K2O, 0-5 P2O5, and 0-5 TiO2, Fe2O3, BaO, MnO. Pref. the compsn. comprises (in wt.%): 40-58 SiO2, 2-5 Al2O3, 25-40 CaO, 8-15 MgO, 3-8 Na2O, 2-10 K2O, 5-10 Na2O+K2O, 0-1 P2O5, and 0-3 TiO2, Fe2O3, BaO, MnO. The amt. of SiO2 is esp. 40-55 wt.%. The amt. of alkali oxide is esp. 5-8 wt.%. The amt. of Al2O3 is esp. 3-5 wt.%. |
