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首页> 外文期刊>Journal of nanoparticle research: An interdisciplinary forum for nanoscale science and technology >The interaction between unique hyperbranched polyaniline and carbon nanotubes, and its influence on the dielectric behavior of hyperbranched polyaniline/carbon nanotube/ epoxy resin composites
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The interaction between unique hyperbranched polyaniline and carbon nanotubes, and its influence on the dielectric behavior of hyperbranched polyaniline/carbon nanotube/ epoxy resin composites

机译：独特的超支化聚苯胺与碳纳米管之间的相互作用及其对超支化聚苯胺/碳纳米管/环氧树脂复合材料介电性能的影响

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摘要

Novel hybridized multi-walled carbon nanotubes (CNTs), consisting of a unique hyperbranched polyaniline (HSiPA) and CNTs, were prepared. The interaction between HSiPA and CNTs was investigated by many techniques, and results show that there are strong π-π and electrostatic interactions between HSiPA and CNTs, so HSiPA can stack firmly onto the surface of CNTs to form a coating. Based on this, a new kind of ternary composites made up of hybridized CNTs and epoxy (EP) resin was prepared, the influence of the ratio of HSiPA to CNTs on the structure and properties of the HSiPA/CNT/EP composites was intensively studied. The percolation threshold of HSiPA/CNT/EP composites is very low (1.26 wt%); besides, with a suitable ratio of HSiPA to CNTs, the HSiPA/CNT/EP composite has much higher dielectric constant and lower dielectric loss than the CNT/EP composite with the same loading of CNTs. When the ratio ofHSiPAtoCNTs is 0.5:1, the dielectric constant and loss at 100 Hz of the resultant HSiPA/ CNT0.5/EP composite are 711 and 1.53, about 7.1 and 4.3 9 10~(-3) times the corresponding value of CNT0.5/ EP composite, respectively. In addition, compared with traditional CNT/EP composites, the HSiPA/CNT0.5/ EP composites have different equivalent circuitmodels. These attractive results are attributed to unique structure of hybridized CNTs, and thus leading to greatly different structures between the CNT0.5/EP and HSi- PA/CNT0.5/EP composites. This investigation reported herein suggests a new approach to prepare new CNTs and related composites with controllable dielectric properties.
机译：制备了由独特的超支化聚苯胺（HSiPA）和CNT组成的新型杂交多壁碳纳米管（CNT）。通过多种技术研究了HSiPA与CNT之间的相互作用，结果表明HSiPA与CNT之间存在很强的π-π和静电相互作用，因此HSiPA可以牢固地堆叠在CNT的表面上形成涂层。在此基础上，制备了一种由碳纳米管与环氧（EP）树脂混合而成的新型三元复合材料，并深入研究了HSiPA与CNT的比例对HSiPA / CNT / EP复合材料结构和性能的影响。 HSiPA / CNT / EP复合材料的渗透阈值非常低（1.26 wt％）;此外，在具有适当的HSiPA与CNT的比例的情况下，HSiPA / CNT / EP复合材料比相同载量的CNT / EP复合材料具有更高的介电常数和更低的介电损耗。当HSiPA与CNT的比例为0.5：1时，所得HSiPA / CNT0.5 / EP复合材料的介电常数和100 Hz时的损耗为711和1.53，约为CNT0对应值的7.1和4.3 9 10〜（-3）倍。 .5 / EP复合材料。另外，与传统的CNT / EP复合材料相比，HSiPA / CNT0.5 / EP复合材料具有不同的等效电路模型。这些诱人的结果归因于杂化CNT的独特结构，因此导致CNT0.5 / EP与HSi-PA / CNT0.5 / EP复合材料之间的结构大不相同。本文报道的这项研究提出了一种制备具有可控介电性能的新型CNT和相关复合材料的新方法。

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