Shape Memory Effect and Actuation Property of Shape Memory Polymer Based Nanocomposites

摘要

In this paper,carbon nanotube and fullerenol nanocomposites with the matrix of shape memory polymer (SMP) were developed and their shape memory properties,EMI SE and electric-field response at different electrical voltages were examined. The strain recovery ratio after the second cycle is more than 90% and tended to be constant 95% after more cycle numbers. This phenomenon is found and called as a training effect. It is clear that the recovery stress of CNT/SMP or fullerenol/SMP nanocomposites were much larger than that of SMP bulk,especially for the nanocomposites of 3.3wt% CNT and 0.3% fullerenol weight fraction. The electrical-field response under different DC voltages was also investigated and their actuation property was partly made clear. This will be helpful for the development of innovative actuators of polymer composites.