| 摘要 |
An inorganic fiber having the following composition: 71 wt% to 80 wt% of SiO 2 , 18 wt% to 27 wt% of CaO, 0 to 3 wt% of MgO, and 1.1 wt% to 3.4 wt% of Al 2 O 3 , wherein the amount of each of ZrO 2 and R 2 O 3 (R is selected from Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or mixtures thereof) is 0.1 wt% or less, the amount of each alkaline metal oxide is 0.2 wt% or less and the total amount of SiO 2 , CaO, MgO and Al 2 O 3 is 99 wt% or more. |
