| 摘要 |
PURPOSE:To provide a peroxide compsn. for a casting mold which is inexpensive, stable and is highly safe and has excellent functionability by using an acetone peroxide compsn. to be added and kneaded together with an acid curable resin to granular refractory aggregate with a specific solvent as a dilution stabilizer. CONSTITUTION:For example, methanol, gamma-butyrolactone, acetyl acetone, are used as the above-mentioned dilution stabilizer. The casting mold is manufactured by introducing gaseous or aerosol SO2 into a sand mold molded by adding 0.5-3pts.wt. acid curable resin and 0.1-2pts.wt. peroxide compsn. to 100pts.wt. granular refractory aggregate and kneading and molding the mixture. The acetone peroxide compsn. diluted by the above-mentioned dilution stabilizer is used for the peroxide compsn. in this case. The compsn. contg. 5-25wt% water and 20-60wt% dilution stabilizer is preferable for such compsn. A furan resin, phenolic resin, etc. or the compolymer thereof and the resin mixture composed thereof are usable as the acid curable resin. |
