Dielectric composites with a high and temperature-independent dielectric constant

Abstract

Dielectric composites made using P(VDF-CTFE) 88/12 mol% as polymer matrix and both micro-sized and nano-sized CaCu3Ti4O12 (CCTO) particles as filler are developed. These composites exhibit high dielectric constant with a small dielectric loss. More importantly, it is found that the dielectric constant of these composites is almost independent of temperature from 25 °C to 125 °C. Comparing the composites made using micro-sized CCTO particles, the composites made using nano-sized CCTO particles exhibit a smaller dielectric loss. The dielectric properties of these composites indicate that the nano-sized CCTO particles have a smaller dielectric constant than the micro-sized CCTO particles.

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Correspondence to Z. -Y. Cheng.

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Shan, X., Zhang, L., Yang, X. et al. Dielectric composites with a high and temperature-independent dielectric constant. J Adv Ceram 1, 310–316 (2012). https://doi.org/10.1007/s40145-012-0031-z

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Key words

  • dielectric constant
  • composite
  • CCTO
  • P(VDF-CTFE)
  • temperature dependence