| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroacoustic conversion film and electroacoustic converter, capable of suppressing degradation in a conversion efficiency, a voltage resistance and flexibility even under environments where temperatures and humidities are severe.SOLUTION: The electroacoustic conversion film includes: a polymer composite piezoelectric body formed by dispersing piezoelectric material particles into a matrix comprised of polymeric material; a film electrode formed on both surfaces of the polymer composite piezoelectric body; and a protective film formed on a surface of the film electrode. The polymer composite piezoelectric body can solve the above problems by containing a liquid substance having SP value of less than 12.5(cal/cm)at a normal temperature, at a mass ratio of 20 ppm-500 ppm.SELECTED DRAWING: Figure 1 |
