| 摘要 |
PURPOSE: To easily produce an inorg. expanded body almost free from broken foam on the surface and excellent in appearance without reducing productivity or requiring further equipment investment. CONSTITUTION: When a compsn. prepd. by mixing reactive inorg. powder such as fly ash with an alkali metallic silicate, water and a blowing agent made of metal powder or hydrogen peroxide is filled into a molding tool and hardened by heating to produce an inorg. expanded body, the compsn. is filled into the molding tool immediately after preparation and the molding tool is put in a heater previously set at a prescribed hardening temp. before the beginning of expansion or before expansion proceeds. |
