ELECTROMECHANICAL TRANSDUCER COMPRISING A POLYURETHANE POLYMER WITH POLYTETRAMETHYLENE GLYCOL ETHER UNITS

摘要

PURPOSE: An electromechanical transformer including a polyurethane polymer with a polytetramethylene glycol ether unit is provided to include a dielectric elastomer with high electrical resistance and high breakdown electric field intensity, thereby realizing higher efficiency. CONSTITUTION: A dielectric elastomer is touched with a first electrode and a second electrode. A polyurethane polymer includes polyisocyanate and/or a polyisocyanate prepolymer. The polyurethane polymer comprises materials generated by the reaction of compounds with at least two isocyanate-reactive groups. The polyisocyanate prepolymer and/or the compounds with at least two isocyanate-reactive groups include a polytetramethylene glycol ether unit.