Abstract Carbon nanotubes (CNT) were added to epoxy/polycaprolactone (PCL) blends in order to get electrically conductive blends. As it was expected, an increase of CNT content promotes a higher electrical conductivity due to the creation of more electrical pathways. Furthermore, it was observed that the enhancement is also observed with increasing PCL content, reaching values of around 0.2 S/m for 0.2 wt % CNT and 20 wt % PCL samples, due to its effect on rheological properties of the mixture, which affect positively to the CNT dispersion process, thus leading to more homogeneous and well dispersed nanocomposites, as observed by microstructural analysis. Thermal conductivity also increases with CNT content but decreases with PCL addition due to its insulating properties. A study of the voltage required to reach the above-mentioned self-healing temperature for each material has been performed by thermography monitoring. It has been observed that the samples with the highest amount of both CNT and PCL, have the best resistive heating capabilities due to a higher thermoresistive efficiency of the electrical network, reaching temperatures above 100 °C, at voltages below 150 V.

中文翻译：

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碳纳米管可在环氧树脂/聚己内酯混合物中实现自主和体积自加热

摘要 将碳纳米管 (CNT) 添加到环氧树脂/聚己内酯 (PCL) 混合物中以获得导电混合物。正如预期的那样，由于产生更多的电通路，CNT 含量的增加促进了更高的电导率。此外，观察到随着 PCL 含量的增加也观察到增强，对于 0.2 wt % CNT 和 20 wt % PCL 样品，由于其对混合物的流变特性的影响，达到了约 0.2 S/m 的值，这对混合物的流变性能产生了积极影响CNT分散过程，从而导致更均匀和分散良好的纳米复合材料，如微观结构分析所观察到的那样。热导率也随着 CNT 含量的增加而增加，但由于其绝缘特性而随着 PCL 的加入而降低。通过热成像监测对每种材料达到上述自愈温度所需的电压进行了研究。已经观察到，具有最高 CNT 和 PCL 量的样品具有最好的电阻加热能力，因为电网具有更高的热阻效率，在低于 150 V 的电压下达到 100 °C 以上的温度。