| 摘要 |
PURPOSE: Provided is a manufacturing method of ceramic sound absorbing materials with continuous porosity by adding a large quantity of foam to clay paste. Also, the sound absorbing materials with exhaust gas purification are manufactured by coating sound absorbing materials with TiO2 powder. CONSTITUTION: The manufacturing method of ceramic sound absorbing materials is as follows: mixing clay paste with solidifying materials such as gypsum, cement, bentonite and limestone; adding a large quantity of foam to be total porosity of 30-90%; drying at 70deg.C for 12hrs and cooling; sintering at 1200deg.C; coating sintered sound absorbing materials with TiO2(anatase) by fixing TiO2 powder, photocatalyst, drying at 110deg.C and thermal treating under 650deg.C. The resultant ceramic sound absorbing materials have the effects of sound absorbance, and exhaust gas purification due to the adsorption of SOx and NOx.
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