Enhanced Dielectric Properties of Three-Phase-Percolative Composites Based on Thermoplastic-Ceramic Matrix (BaTiO3 + PVDF) and ZnO Radial Nanostructures
Enhanced Dielectric Properties of Three-Phase-Percolative Composites Based on Thermoplastic-Ceramic Matrix (BaTiO3 + PVDF) and ZnO Radial Nanostructures
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DOI：
10.1021/am100296u
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发表时间：
2010-05-01
影响因子：
9.5
通讯作者：
Wang, Guangsheng
中科院分区：
文献类型：
--
作者：
Wang, Guangsheng
采用简单的共混和热压成型工艺制备了ZnO径向纳米团簇（R-ZnO）和BaTiO 3（BT）纳米粒子嵌入聚偏氟乙烯（PVDF）的三相复合材料。BT + PVDF复合材料的体积分数为30体积%的BT颗粒被用作热塑性陶瓷基体。与R-ZnO/PVDF两相复合材料相比，R-ZnO/（BT + PVDF）三相复合材料的介电常数提高，介电损耗降低。用逾渗理论解释了实验结果。详细研究了提高的逾渗阈值，并考察了其热稳定性。
Three-phase-percolative composites with ZnO radial nanoclusters (R-ZnO) and BaTiO3 (BT) nanoparticles embedded into polyvinylidene fluoride (PVDF) were prepared by using a simple blending and hot-molding technique. The BT + PVDF composite with a volume fraction of 30 vol % BT particles were employed as a thermoplastic-ceramic matrix. Compared with the two-phase-percolative composites of R-ZnO/PVDF, the three-phase-percolative (R-ZnO/(BT + PVDF)) composites showed enhanced dielectric constant and decreased dielectric loss. The percolation theory was used to explain the experimental results. The increased percolation threshold was studied in detail, and the thermal stability was also investigated.