POLYMER ACTUATOR

摘要

The present invention provides a polymer actuator which has excellent flexibility, excellent tensibility and high dielectric breakdown strength, while having low temperature dependence of characteristics such as elastic modulus, and which can be driven even by low electric field. The present invention relates to a polymer actuator which is characterized in that: the storage modulus (E'(20°C)) as determined by dynamic viscoelasticity measurement at a frequency of 1 Hz at a temperature of 20°C is 0.5 MPa or less; the ratio of the storage modulus (E'(-20°C)) as determined by dynamic viscoelasticity measurement at a frequency of 1 Hz at a temperature of -20°C relative to the storage modulus (E'(20°C)), namely E'(-20°C)/E'(20°C) is 5.0 or less; and the ratio of the storage modulus (E'(40°C)) as determined by dynamic viscoelasticity measurement at a frequency of 1 Hz at a temperature of 40°C relative to the storage modulus (E'(20°C)), namely E'(40°C)/E'(20°C) is 0.5 or more.