Fabrication and Dielectric Properties of Lead-Free Inorganic Particles–Epoxy Resin Composites

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概要

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• Inorganic–organic composites with a 0–3 connectivity are fabricated from inorganic particles with a high relative permittivity ($\varepsilon_{\text{r}}$) and a low dielectric loss ($\tan\delta$), and epoxy resin. The compacted powder obtained by pulverizing BaZrO3–BaTiO3–Ba(Fe1/2Ta1/2)O3 (BZTFT) ceramics has 1/12th the $\varepsilon_{\text{r}}$ and 72 times the $\tan\delta$ of the ceramics. On the basis of the relationship between $\varepsilon_{\text{r}}$ and BZTFT filler content, the experimental values of the composites are determined to be in good agreement with theoretical values calculated by following Nielsen's complex rule in the filler content range of 50–80 vol %. The temperature dependence of the dielectric properties of BZTFT powder/epoxy resin (90/10, v/v) composites measured at different frequencies suggests that the temperature characteristics of the present materials correspond to the Z8T characteristics [Z8T; Electronic Industries Association (EIA) standard: $\Delta C/C_{\text{25\,{\degC}}}$ is expressed as a rate of change within $+22$ and $-33$% in the temperature range from 10 to 150 °C] when represented by the temperature characteristics of surface-mounted capacitors. It is shown that the effect of the vacuum drying of the filler on the dielectric properties of the composites is larger than that of the silane coupling treatment and that the dielectric properties can be improved synergistically by performing both treatments.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2006-09-30

著者

• Yazawa Tetsuo

  Graduate School Of Engineering University Of Hyogo

• Kobune Masafumi

  Graduate School Of Engineering Himeji Institute Of Technology

• Yazawa Tetsuo

  Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan

• Takasaki Keiko

  Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan

関連論文

• Fabrication and Luminescent Characteristics of Y_2O_3:Eu^ Nanotubes by Hydrothermal Treatment
• Physical Properties of 0.24Pb(Zn_Nb_)O_3・0.384PbZrO_3・0.376PbTiO_3 Thin Films Crystallized by Hot Isostatic Pressing
• Effects of Microwave and Hot-Press Hybrid Sintering on Microstructure and Piezoelectric Properties of 0.24Pb(Zn_3Nb_)O_3・0.384PbZrO_3・0.376PbTiO_3 Ceramics
• Physical Properties of 0.24Pb(Zn1/3Nb2/3)O3$\cdot$0.384PbZrO3$\cdot$0.376PbTiO3 Thin Films Crystallized by Hot Isostatic Pressing
• Fabrication and Dielectric Properties of Lead-Free Inorganic Particles–Epoxy Resin Composites

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