The Poling Field and Draw Dependence of the Piezoelectric and Pyroelectric Response of Pressure Quenched Phase I Poly(Vinylidene Fluoride) Films.
Abstract
Recent investigations have shown that unoriented phase I poly(vinylidene fluoride (PVF2) films can be produced by pressure quenching. The poling field dependence of the pyroelectric coefficient, P sub y, the piezoelectric coefficients d sub p, d sub 31 and e sub 31 and the dielectric response is investigated for poling fields up to E sub p = 2.75 million V/cm. These quantities exhibit a plateau region where the initial rapid increase with increasing E sub p decreases. This behavior is similar to that observed for oriented phase II PVF2 films. The effect of draw ratio on d sub p and P sub y for draw ratios up to 6:1 is also examined. D sub p increases from 6.5 pC/N to 19 pC/N as the draw ratio goes from 1:1 to 6:1 (at constant E sub p). P sub y increases from 1 x 10 to the minus ninth power C/sq cm K to 5 x 10 to the minus ninth power C/sq cm K. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 15, 1981
- Accession Number
- ADA101776
Entities
People
- J. I. Scheinbeim
- K. T. Chung
Organizations
- Rutgers University–New Brunswick