Ferroelectric and piezoelectric properties of nylon 11/poly(vinylidene fluoride) bilaminate films

摘要: The ferroelectric and piezoelectric properties of a new class polymer materials, nylon 11/polyvinylidene fluoride (PVF2) bilaminate films, prepared by co-melt-pressing method, is presented. films exhibit typical D-E hysteresis behavior with remanent polarization, Pr, about 75 mC/m2, which higher than the value 52 mC/m2 observed for PVF2 or 11 measured under same conditions. coercive field, Ec, ∼ 78 MV/m, that either films. Measurements temperature dependence strain coefficient, d31, stress e31, were also carried out. 41 pC/N at room temperature, significantly (25 pC/N) (3.1 pC/N). When increased to 110°C, d31 reaches maximum 63 pC/N, more five times (11 four (14 temperature. shows 109 almost twice (59 mC/m2) 18 (6.2 mC/m2). Measurement hydrostatic dh, an enhancement respect individual components, 11. ©1995 John Wiley & Sons, Inc.