PURPOSE: To obtain the solidified material of silk which holds the intrinsic properties of silk by mixing a vinyl-based monomer with silk powder at a specified rate and using this mixture, heating and compressing the same in a mold, for example, at the specified temperature and pressure.
CONSTITUTION: A vinyl-based monomer is mixed with silk powder and this mixed powder is pressurized and heated. For example, the mixed powder is pressurized and molded at ordinary temperature at ≥100kg/cm2 and thereafter the molded form is heated at ≤200°C in an electric furnace or the like. The blending amount of both the vinyl-based monomer and silk powder is not especially limited. The vinyl-based monomer is preferably used at amount of 5-100 pts.wt. for 100 pts.wt. silk powder. When the blending amount of the vinyl-based monomer exceeds 100 pts.wt., the silky touch of the obtained moldings is decreased. There is a tendency so that water absorption property and moisture release properties of silk are deteriorated. Further there is the tendency so that workability is deteriorated in the amount less than 5 pts.wt. In this method, the solidified material of silk is obtained which is excellent in water resistance, workability and mechanical strength or the like and also holds the intrinsic properties of silk.
MURAYAMA MASAHIKO
HIRABAYASHI KIYOSHI
