| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Engineering Ceramics: Microstructure-Property-Performance Relations and Applications
|
| Presentation Title |
Modular Piezoceramic/Polymer Composites with Locally Adjustable Piezoelectric Properties |
| Author(s) |
Patrizia Hoffmann, David Köllner, Tobias Fey |
| On-Site Speaker (Planned) |
Patrizia Hoffmann |
| Abstract Scope |
Piezoceramic polymer composites combine piezoelectric sensitivity of the brittle ceramic with the high dielectric strength of the flexible polymer to gain novel properties. Typical composites for piezoelectric applications possess exclusively the same piezoelectric properties in the entire material. Therefore, we designed modular periodic composites of ceramic building blocks and polymer-matrix with individual piezoelectric properties for each block. The modular arrangement offers variable polarization directions and a new opportunity for local control of piezoelectric properties. Barium titanate building blocks were prepared by injection molding and assembled to 2-2 layer composites and honeycomb structures, which were bonded with ceramic-filled epoxy resin. The piezoelectric response was determined using direct excitation via Berlincourt method and indirectly by P-E-loop measurements. The influence of the different polarization directions of individual building blocks as well as the matrix thickness and filler content was investigated. |