| 摘要 |
PURPOSE:To obtain easily a carbonaceous material having improved oxidation resistace by mixing a liq. silicon compound with a liq. org. compound forming carbon by heating, curing the mixture by polymn. or cross-linking, and carbonizing the resulting precursor. CONSTITUTION:The liq. silicon compound such as ethyl silicate is mixed with a liq. org. compound having functional groups and forming carbon by heating such as resol type phenol resin, and the liq. mixture is cured by polymerizing or cross-linking at least one of the compounds in the presence of a catalyst such as an acid to obtain a resinous solid. This solid is precursor contg. Si, O and C mixed uniformly in a molecular state. The precursor is carbonized by thermal decomposition in a nonoxidizing atmosphere of nitrogen or the like, and the excess org. residue is removed to obtain a carbonaceous material contg. Si. Since the carbonaceous material has superior oxidation resitance, it can be used as a heat resistant structural material, a flame resistant material or a starting material for various kinds of ceramics. |
