| 摘要 |
A composition of a binder for enameling a porous volcanic rock to decorate the appearance of the volcanic rock with various colors is provided. The binder is comprised of oxides of silica, alumina, ferrous, titanium, calcium, magnesium dispersed in alkaline medium. The binder is impregnated into the porous surface of the volcanic rock followed by air drying on room temperature. After 24 hrs, enamel solution is pasted on the dried surface of the binder layer. The binder protects the porous structure of the volcanic rock from destroying by heat wave when baking the enamel layer up to 1,350° C. within 6 hours.
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