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首页> 外文期刊>Journal of Applied Polymer Science >Improved dispersion of carbon nanotubes in poly(vinylidene fluoride) composites by hybrids with core-shell structure
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Improved dispersion of carbon nanotubes in poly(vinylidene fluoride) composites by hybrids with core-shell structure

机译：用核 - 壳结构的杂交体改善了碳纳米管在聚（偏二氟乙烯）复合材料中的分散体

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摘要

Core-shell structure hybrids of carbon nanotubes (CNTs)/BaTiO3 (H-CNT-BT) and commercial multi-wall CNTs are respectively incorporated into poly(vinylidene fluoride) (PVDF) for preparing the composites near the percolation thresholds. A comprehensive investigation for CNT's dispersion and composite's conductivity is conducted between H-CNT-BT/PVDF and CNT/PVDF at different depths vertical to the injection's direction. Gradual increases of the conductivity in two composites are observed from the out-layer to the core part which infers an inhomogeneous CNT's dispersion in the interior of composites due to their migration under flow during the injection. However, the use of H-CNT-BT fillers with core-shell structure enables to reduce this inhomogeneous dispersion in the composite. Furthermore, the conductive network of CNTs in H-CNT-BT/PVDF is less sensitive to the thermal treatment than the one in CNT/PVDF composite, which infers the core-shell structure of hybrids can ameliorate the sensitivity of the conductive network. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45693.
机译：碳纳米管（CNT）/钛酸钡（H-CNT-BT）和商用多壁CNT的核 - 壳结构的杂交分别掺入到聚（偏二氟乙烯）（PVDF）制备的附近渗滤极限的复合材料。对于CNT的分散性和复合材料的导电性的全面的调查是在垂直于喷射的方向不同的深度H-CNT-BT / PVDF和CNT / PVDF之间进行。在两种复合材料的导电性的增加逐渐从外层，其推断不均匀的CNT在复合材料的内部分散液中的芯部观察到由于其在注射期间下流动迁移。然而，具有核壳结构中使用H-CNT-BT填料能够减少在复合这个不均匀的分散体。此外，CNT的在H-CNT-BT / PVDF的导电网络是一个比在CNT / PVDF复合材料，其中推断杂种的核 - 壳结构可以改善导电网络的灵敏度热处理较不敏感。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018年，135，45693。

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