| 摘要 |
PURPOSE:To provide a title composition enhancing dimensional stability or the like of a molded product of ceramic powder, metal powder or the like, which composition comprising polystyrene, atactic polypropylene, polyethylene or the like. CONSTITUTION:As a resin composition used for adding and mixing into ceramic powder, such as silicon nitride, alumina, zirconia, silicon carbide, or aluminum nitride, and metal powder, such as silicon, titanium, or zirconium, in the injection molding or extrusion molding, 40-50vol% of a composition obtained by mixing 50-90wt% of polystyrene, 3-30wt% of atactic polypropylene, 3-30wt% of polyethylene and 1-5wt% of a lubricating agent and a plasticizer is used. Thereby, moldability and dimensional stability in the molding are improved and crack generation, expansion and deformation of a molded product can be avoided in removing the resin after molding. |
