Abstract
The relative permittivity of O-cresol Novolac epoxy resin/(Ba0.9Sr0.1)(Ti0.9Zr0.1)O3 (epoxy/BSTZ) composites with various contents of BSTZ ceramic powder was measured at 10 kHz to 1 MHz. As the content of BSTZ ceramic powder increases from 0 to 70 wt%, the permittivity increases from 5.72 to 25.23. Four different mixing rules are used to predict the variation of permittivity of epoxy/BSTZ composites, and the Lichtenecker equation fits the measured results. The permittivity of epoxy/BSTZ composites slightly increases as the measured temperature increases, and is unchanged when the measured temperatures are higher than the Curie temperature of BSTZ ceramic. This research proves that we can develop the epoxy/BSTZ composites with characteristics of stable temperature and frequency dependence.
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