| 摘要 |
PROBLEM TO BE SOLVED: To enable the forming of even a formed product of a complicated shape in an ultrashort time and obtain the high-strength ceramic formed product excellent in appearance by filling a slurry containing a ceramic powder dispersed in water in a forming mold while adding and mixing a hydraulic substance therewith, making the slurry gel, forming the gelled slurry, drying the formed material in the mold or taking out the formed material from the mold and then drying the taken out formed material. SOLUTION: This ceramic forming material comprises a slurry prepared by dispersing a ceramic powder in water and a hydraulic material or a gelling agent. For example, alumina is used as the ceramic powder and the one having 0.1-20μm particle diameter is used. A substance, reactive with water, convertible into a polymer and/or a three-dimensional substance and producing a hydrous gel is used as the hydraulic substance and, e.g. a monomer, an oligomer, a prepolymer and a polymer, etc., having isocyanato groups are cited. One example of production is described as follows: The slurry comprising water, an alumina powder and a silica powder is placed in a tank, stirred, mixed and defoamed and a water-soluble urethane prepolymer is separately added thereto. Both the slurry and prepolymer are mixed and filled in a forming mold to gel. The gel mixture is then taken out of the mold, predried at 50 deg.C for 5hr and then regularly dried at 100 deg.C for 5hr.
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