| 摘要 |
PROBLEM TO BE SOLVED: To provide an inorganic fiber product having excellent heat-resistance by using an inorganic fiber easily soluble in living body as a raw material. SOLUTION: The inorganic fiber product is composed of an inorganic fiber composed mainly of SiO2 and CaO, a binder and optionally inorganic powder and has a total content of Na and K of <=4,000 ppm. For example, the inorganic fiber is composed of 58-80 wt.% SiO2 , 1-40 wt.% CaO and 0-15 wt.% MgO, the binder is a colloidal silica and the inorganic powder is silica powder. The total content of Na and K is <=2,000 ppm, the Fe content is <=2,000 ppm and the Ti content is <=1,000 ppm.
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