POLYURETHANE ELASTOMER-BASED ACTUATOR

摘要

PROBLEM TO BE SOLVED: To obtain a polyurethane elastomer-based actuator having excellent electrostriction characteristics. SOLUTION: The polyurethane elastomer-based actuator is produced from a polyisocyanate and at least one kind of polyol selected from a polyol having amide group and a polyol containing a polymer having amide group. The water content of the polyurethane elastomer-based actuator is 0.01-50 wt.% and the actuator has a property to amplify the strain caused by the orientation of the polyurethane elastomer in the direction of electric field applied to the elastomer in a water-containing state.