高分子物質の曳糸性について : 高分子レオロジー
スポンサーリンク
概要
- 論文の詳細を見る
In the case of dry spinning or melt spinning, the extruded liquid-thread from the spinneret are coagulated rapidly or slowly by drying or cooling depending on the system. the spinnability of the extruded liquid-thread under such conditions are different as compared with the spinnability of ordinary means, but it has important meaning at the stand point of industrial spinning process. It has been tried to analyse the deformation process extruded liquidthread under simple assumptions, i.e., there is no drying or cooling of liquid-thread during the deformation process. Under such special conditions, the following behavior is recongnized. 1. Keeping the diameter of spinneret hole and the viscosity of spinning liquid constant, a small rate of extrusion brings a small rate of deformation. 2. Keeping the rate of extrusion and the diameter of spinneret hole constant, a large diameter of spinneret hole brings a small rate of deformation. 3. Keeping the rate of extrusion and the diameter of spinneret hole constant, a large viscosity of spinning liquid brings a small rate of deformation. From the behavior mentioned above, some interesting suggestions about the practical spinning process will be obtained. In the case of melt spinning, the extruded liquid-thread is cooled by heat conduction only, and the coagulating speed is rather slow as compared with the dry spinning of volatile spinning solution. Then rather large diameter of spinneret hole is suitable for melt spinning, because a small rate of deformation provides a sufficient time for coagulation. From another view point, the extruded liquid-thread will be drafted enough during the long coagulating time, so a fine denier filament is obtainable by using even a large diameter spinneret hole.
- 社団法人日本材料学会の論文
- 1960-04-15