2539 Study on bending creep behavior of Shape Memory Polymer (DiARY) of Polyurethane Series
Details
Shape Memory polymer (SMP) is known to have visco-elastic behavior. Shape recovery is considered to occur due to this visco-elastic behavior. On the other hand, creep and creep recovery may also occur that is known as one of visco-elastic behavior. It is important to understand creep and creep recovery behavior, because it effects on material's shape memory and shape recovery characteristics. This research examined the creep and creep recovery behavior by three point bending creep test. As a result, time and temperature dependence was confirmed, and also master curve can be drawn by superposing the creep compliance curves. Moreover, estimation of creep and creep recovery can be possible by master curve, shift factor and Boltzmann's superposition principle.
