Abstract In this work, a novel ternary polydimethylsiloxane (PDMS)-based nanocomposite co-filled by carboxyl-functionalized multi-walled nanotube (cMWCNT) and BaTiO3(BT) nanoparticle were developed. The hybrids cMWCNT-BT was realized via the hydrogen bonding (H-bonding) interaction between –COOH groups of cMWCNT and the -OH groups of BT. Compared with the binary composite of BT/PDMS and cMWCNT/PDMS, the results showed that the kind of three-component nanocomposites had high dielectric permittivity and low dielectric loss. Different from cMWCNT, the hybrids cMWCNT-BT have good dispersion in PDMS matrix, forming many micro-capacitors and interfaces, and thus leading to remarkably high dielectric constant. Meanwhile, BT on the surfaces of cMWCNT reduce the direct contact of cMWCNT, resulting in reduced dielectric loss. More important, the BT and cMWCNT had a synergistic effect on dielectric permittivity of the cMWCNT-BT/PDMS composite. Therefore, the dielectric properties of the novel ternary composite can be improved by optimizing the synergistic effects between the charge storage behavior of the ferroelectric phase and the charge transport behavior of the conductive phase.

中文翻译：

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由羧基官能化多壁纳米管和BaTiO 3 共同填充的具有高介电常数和低介电损耗的新型三组分纳米复合材料

摘要 在这项工作中，开发了一种由羧基官能化多壁纳米管 (cMWCNT) 和 BaTiO3(BT) 纳米颗粒共同填充的新型三元聚二甲基硅氧烷 (PDMS) 基纳米复合材料。杂化 cMWCNT-BT 是通过 cMWCNT 的 -COOH 基团和 BT 的 -OH 基团之间的氢键（H 键）相互作用实现的。与BT/PDMS和cMWCNT/PDMS的二元复合材料相比，结果表明这种三组分纳米复合材料具有高介电常数和低介电损耗。与 cMWCNT 不同的是，混合体 cMWCNT-BT 在 PDMS 基体中具有良好的分散性，形成许多微电容器和界面，从而导致非常高的介电常数。同时，cMWCNT 表面的 BT 减少了 cMWCNT 的直接接触，从而降低了介电损耗。更重要，BT 和 cMWCNT 对 cMWCNT-BT/PDMS 复合材料的介电常数具有协同作用。因此，可以通过优化铁电相的电荷存储行为和导电相的电荷传输行为之间的协同效应来改善新型三元复合材料的介电性能。