MICRO TUBE MANUFACTURING METHOD OF TUBE-SHAPED DILATATION MICROMANIPULATOR MADE OF SHAPE MEMORY POLYMER

摘要

We have proposed and discussed the tube-shape dilatation micromanipulator made of the shape-memory polymer and the new tube manufacturing method to obtain the constant thickness tube. In the results, we have the following conclusions. (1). This study presented a dip molding method as a method of manufacturing shape-memory polymer tubes aiming at microminiaturization and pointed out the problem of their non-uniform wall thickness. (2). Dip molding equipment was experimentally manufactured, while taking account of the pulling-up speed, viscosity of the polymer, temperature and humidity in the manufacturing environment. (3). The relationship of the viscosity of the polymer and pulling-up speed with the wall thickness of tubes in manufacturing polymer tubes 1 mm in internal diameter and 100mm long was explained, and the manufacturing conditions to keep the deviation of the wall thickness below 10% were shown in this study. Under these conditions, the wall thickness was between 30. urn and 120 μm. (4). This study indicated that manufacturing polymer tubes 300μm and 100μm in internal diameter was possible under the same conditions as manufacturing 1- mm-internal diameter-polymer tubes.