| 摘要 |
PURPOSE:To obtain the title material improved in moldability and oxidation resistance by incorporating inorganic powder with an organic solvent, organic solvent-soluble binder and sorbitan fatty acid ester or specific esterether. CONSTITUTION:The objective extrusion molding material can be obtained by incorporating 100 pts.wt. of inorganic powder with (1) 1-10 pts.wt. of an organic solvent-soluble binder, (2) 1-20 pts.wt. of a sorbitan fatty acid ester and/or polyoxyethylene sorbitan fatty acid esterether, and (3) 5-100 pts.wt. of an organic solvent >=90 deg.C in boiling point. The size of said inorganic powder to be used is pref. <=10mu as a size so as to be able to make a smooth molding operation without damaging the inner wall of an extruder during extrusion molding. Said binder is pref. methyl cellulose, hydroxypropylmethyl cellulose or polyvinyl acetate each free from chlorine component and/or Na, because the resultant forms are to be calcined into the final products. |
