Dispersions of High-Quality Carbon Nanotubes with Narrow Aggregate Size Distributions by Viscous Liquid for Conducting Polymer Composites,ACS Applied Nano Materials

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Dispersions of High-Quality Carbon Nanotubes with Narrow Aggregate Size Distributions by Viscous Liquid for Conducting Polymer Composites
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-01-28 , DOI: 10.1021/acsanm.9b02252
Kazufumi Kobashi ₁ , Atsuko Sekiguchi ₁ , Takeo Yamada ₁ , Shun Muroga ₁ , Toshiya Okazaki ₁

Affiliation

Preserving the quality of carbon nanotubes (CNTs) is essential to fully utilize the characteristics in dispersions and other forms. To fabricate CNT dispersions retaining the quality, we propose to reduce CNT aggregate size distributions by viscous liquids at the initial stage from as-grown CNT powders originally possessing a wide aggregate size distribution. Higher viscosity solvents were found to highly disentangle the CNT powder and give a narrower CNT aggregate size distribution without impairing the quality. To show the advantages of these CNT dispersions, we demonstrated a 10⁴-fold increased electrical conductivity of CNT rubber composite based on the predispersion step of CNT powder in the rubber base compound with high viscosity. Our method can afford a high quality of CNT and avoid a long, heavy dispersion, which was conventionally carried out to decrease entangled, large size CNT aggregates, furthermore, applicable for fabrication of conducting polymer composites.

中文翻译：

粘性液体分散高分子尺寸分布的高质量碳纳米管对聚合物复合材料的分散

保持碳纳米管（CNT）的质量对于充分利用分散体和其他形式的特性至关重要。为了制造保持质量的CNT分散体，我们建议在初始阶段通过从最初具有较宽的聚集体尺寸分布的CNT粉末中减少粘性液体来减少CNT聚集体尺寸分布。发现较高粘度的溶剂可高度分解CNT粉末，并提供较窄的CNT聚集体尺寸分布，而不会影响质量。为了展示这些CNT分散液的优势，我们展示了10 ⁴基于CNT粉在高粘度橡胶基础胶料中的预分散步骤，CNT橡胶复合材料的电导率提高了两倍。我们的方法可以提供高质量的CNT并避免长而重的分散，这通常是为了减少缠结的大尺寸CNT聚集体而进行的，此外，还可用于制造导电聚合物复合材料。

更新日期：2020-01-29

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