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首页> 外文期刊>Nanotechnology >Dramatic property enhancement in polyetherimide using low-cost commercially functionalized multi-walled carbon nanotubes via a facile solution processing method
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Dramatic property enhancement in polyetherimide using low-cost commercially functionalized multi-walled carbon nanotubes via a facile solution processing method

机译：使用低成本的商业功能化多壁碳纳米管，通过简便的溶液处理方法显着提高聚醚酰亚胺的性能

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摘要

Polyetherimide (PEI) has excellent mechanical and thermal properties, and exceptional fire resistance. Developing even broader multi-functionality in PEI/carbon nanotube (CNT) composites for industrial applications is an alluring but challenging goal, due to processing difficulties related to the high pressure and temperature needed to achieve effective flow for this polymer, and costly and complex treatments of the CNTs. Here we report the fabrication of PEI nanocomposite films using low-cost commercially functionalized multi-walled carbon nanotubes (MWNTs), and a simple and innovative process, achieving exceptional properties with only 0.5 wt% of MWNTs, including an increase in electrical conductivity of 12 orders of magnitude, accompanied by an unprecedented increase of 86 degrees C in thermal decomposition temperature (higher service temperature). Field emission scanning electron microscopy revealed a high degree of uniform dispersion among the MWNTs, superb polymer-MWNT interaction and formation of a spatially homogeneous nanotube network within the matrix. The enhancement in these properties suggests great potential use for this developed processing approach and the resulting nanocomposites for multi-functional coating or interfacing materials in aerospace and electronic industries.
机译：聚醚酰亚胺（PEI）具有出色的机械性能和热性能，以及出色的耐火性。在工业应用的PEI /碳纳米管（CNT）复合材料中开发甚至更广泛的多功能性是一个诱人但具有挑战性的目标，因为与实现该聚合物有效流动所需的高压和高温相关的加工困难以及昂贵而复杂的处理的碳纳米管。在这里，我们报道了使用低成本的商业功能化多壁碳纳米管（MWNT）和简单创新的工艺制造的PEI纳米复合膜，仅用0.5 wt％的MWNT即可实现优异的性能，包括电导率提高12数量级，伴随着热分解温度空前提高86摄氏度（更高的使用温度）。场发射扫描电子显微镜揭示了MWNT之间的高度均匀分散，出色的聚合物-MWNT相互作用以及在基质内形成了空间均匀的纳米管网络。这些性能的提高表明，这种发达的加工方法及其所产生的纳米复合材料在航空航天和电子工业中用于多功能涂料或界面材料具有巨大的潜力。

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