Dielectric Response of Ceramic-Polymer Composite with High Permittivity
- PDF / 1,359,421 Bytes
- 6 Pages / 612 x 792 pts (letter) Page_size
- 49 Downloads / 271 Views
1134-BB08-10
Dielectric Response of Ceramic-Polymer Composite with High Permittivity Xiaobing Shan, Lin Zhang, Peixuan Wu, Canran Xu and Z.-Y Cheng Materials Research and Education Center, Auburn University, Auburn, AL 36849 ABSTRACT Based on solution casting method, a ceramic [CaCu3Ti4O12 (CCTO)]-Polymer [P(VDFTrFE)] composite with flexibility has been synthesized and its dielectric response has been studied. The CCTO ceramic powders were prepared by traditional sintering method and were milled with a relative uniform size. The dielectric properties of these films with micro-size and nano-size CCTO particle, as well as different polymer matrixes were determined. The process was optimized by hot pressing and surface modification to achieve high dielectric constant. A dielectric constant about 175 for one layer composite with high flexibility using silane coupling agent was obtained at 1 kHz at room temperature. INTRODUCTION In general, inorganic ceramics have high dielectric constants of up to 104. However, they are brittle and heavy, and have low electric breakdown strengths. In contrast, polymers are flexible and easy to process and exhibit high breakdown strengths (up to 500 MV/m), but their dielectric constants are much smaller (
Data Loading...
