Polymer/piezoelectric ceramic composites: Polystyrene and poly(methyl methacrylate) with PZT

✍ Scribed by J. Runt; E. C. Galgoci

• Publisher: John Wiley and Sons
• Year: 1984
• Tongue: English
• Weight: 413 KB
• Volume: 29
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1984.070290216

✦ Synopsis

Lead zirconate-titanate (PZT)/polymer composites have been prepared by in situ polymerization of styrene and methyl methacrylate around aligned, thin PZT rods. Hydrostatic piezoelectric coefficients (& and g h ) measured by a dynamic technique yielded figures of merit (&&) roughly four times that of homogeneous PZT for as-polymerized composites. When these composites were annealed at a temperature slightly below the glass transition temperature of the matrix polymer and repoled, ;ihgh increased nearly twofold due primarily to a reduction of the composite dielectric constant. The piezoelectric response was found to be essentially independent of frequency from 30 to 160 Hz.