Reversible Bending Motion of Unimorph Composites Driven by Combining LaNis Alloy Powders Dispersed Polyurethane and Thin Supporting Copper Sheet under Partial Hydrogen Gas Pressure

摘要

The polyurethane composites dispersed with powders mixture of LaNi_5 hydrogen storage alloy (35 vol% of LaNi_5) and Pd-Al_2O_3 catalyst powders were prepared by solution cast method, which easily controlled the shape and mixed ratio of the composites. In order to generate the bending strain of reversible up motions at vertical and horizontal directions, the unimorph (PU+LaNi_5/Cu) sheet constructed with the driving polyurethane composite and supporting copper thin sheet of 10 urn thickness with high specific stiffness (apparent hardening modulus per specific weight) was prepared.