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首页> 外文期刊>Journal of Applied Polymer Science >Thermal and dielectric behavior of flexible polycarbonate/lead zirconate titanate composite system
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Thermal and dielectric behavior of flexible polycarbonate/lead zirconate titanate composite system

机译：柔性聚碳酸酯/锆钛酸铅钛酸盐复合体系的热和介电性能

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摘要

Polycarbonate (PC)/Lead Zirconate Titanate (PZT) composites were prepared using solution mixing method followed by hot pressing. The volume fraction of PZT particles was varied from 0 to 27.5%. SEM showed good dispersion of PZT in the PC matrix. XRD confirmed the perovskite structure of PZT and amorphous structure of polycarbonate. The dielectric constant of the composites measured at 1 kHz, increased ～3.5-fold compared with pure PC. The modified Lichtenecker equation agreed well with the experimental data. There was no dispersion in the dielectric constant of the composites for the frequency range of 1 kHz to 10 MHz. However, at frequencies higher than 10 MHz significant drop in dielectric constant was observed. The dissipation factor of the composites was found below 0.02. However, above 1 MHz, an abrupt increment in the dissipation factor was observed.
机译：聚碳酸酯（PC）/锆钛酸铅（PZT）复合材料的制备是采用溶液混合法，然后进行热压。 PZT颗粒的体积分数在0到27.5％之间变化。 SEM显示PZT在PC基质中的良好分散。 XRD证实了PZT的钙钛矿结构和聚碳酸酯的无定形结构。与纯PC相比，在1 kHz下测得的复合材料的介电常数提高了约3.5倍。改进的Lichtenecker方程与实验数据吻合良好。在1 kHz至10 MHz的频率范围内，复合材料的介电常数没有分散。但是，在高于10 MHz的频率下，观察到介电常数明显下降。发现复合材料的耗散因子低于0.02。但是，在1 MHz以上，观察到损耗因子突然增加。

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