Enhancement of thermal and electrical properties of carbon nanotube polymer composites by magnetic field processing
Enhancement of thermal and electrical properties of carbon nanotube polymer composites by magnetic field processing
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DOI：
10.1063/1.1616638
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发表时间：
2003-11-01
影响因子：
3.2
通讯作者：
Dahmen, K
中科院分区：
文献类型：
--
作者：
Choi, ES;Brooks, JS;Dahmen, K
我们表明，单壁碳纳米管（CNT）-聚合物复合材料的热性能和电性能通过加工过程中的磁排列得到显着增强。复合材料的电传输特性主要由跳跃传导控制，其局部长度与束直径相当。复合材料加工过程中纳米管的成束是影响电性能，特别是热传输性能的一个重要因素。需要更好的 CNT 隔离才能达到 CNT 复合材料的理论导热率极限。 (C) 2003 年美国物理研究所。
We show that the thermal and electrical properties of single wall carbon nanotube (CNT)-polymer composites are significantly enhanced by magnetic alignment during processing. The electrical transport properties of the composites are mainly governed by the hopping conduction with localization lengths comparable to bundle diameters. The bundling of nanotubes during the composite processing is an important factor for electrical, and in particular, for thermal transport properties. Better CNT isolation will be needed to reach the theoretical thermal conductivity limit for CNT composites. (C) 2003 American Institute of Physics.