Fabrication of Piezoelectric Polymer Film.
Abstract
High values of pyroelectric and piezoelectric activity in fully electroded films of poly(vinylidene fluoride) were obtained by 'conventional' (non-corona) poling at room temperature with sufficiently high fields. The avoidance of breakdown while obtaining high activity requires an understanding of the time dependence of both breakdown and activity. Time-to-breakdown as a function of field, and room temperature pyroelectric activity (7-14 days after poling at 23-1/2 deg C) as a function of poling time and field were obtained for 25-micrometer biaxially stretched films with evaporated aluminum electrodes. The highest activities were obtained by poling at the highest fields and poling to breakdown. A pyroelectric activity of 36/micro-CK sq m was measured two weeks after poling. The highest activity obtained with no apparent breakdown (31/micro-CK sq m) was measured a week after poling. These values are comparable with the highest that have been reported for this material using any poling temperature or using corona poling.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1978
- Accession Number
- ADA070822
Entities
People
- James M. Kenney
- Martin G. Broadhurst
- Steven C. Roth
Organizations
- National Institute of Standards and Technology