Farcas Catalina, Galao Oscar, Vertuccio Luigi, Guadagno Liberata, Romero-Sánchez M Dolores, Rodríguez-Pastor Iluminada, Garcés Pedro
Civil Engineering Department, University of Alicante, Ctra. San Vicente s/n, 03690 San Vicente del Raspeig, Spain.
Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 84084 Fisciano, Italy.
Nanomaterials (Basel). 2021 Sep 17;11(9):2427. doi: 10.3390/nano11092427.
In this study, CNTs and graphite have been incorporated to provide electrical conductivity and self-heating capacity by Joule effect to an epoxy matrix. Additionally, both types of fillers, with different morphology, surface area and aspect ratio, were simultaneously incorporated (hybrid CNTs and graphite addition) into the same epoxy matrix to evaluate the effect of the self-heating capacity of carbon materials-based resins on de-icing and ice-prevention capacity. The self-heating capacity by Joule effect and the thermal conductivity of the differently filled epoxy resin were evaluated for heating applications at room temperature and at low temperatures for de-icing and ice-prevention applications. The results show that the higher aspect ratio of the CNTs determined the higher electrical conductivity of the epoxy resin compared to that of the epoxy resin filled with graphite, but the 2D morphology of graphite produced the higher thermal conductivity of the filled epoxy resin. The presence of graphite enhanced the thermal stability of the filled epoxy resin, helping avoid its deformation produced by the softening of the epoxy resin (the higher the thermal conductivity, the higher the heat dissipation), but did not contribute to the self-heating by Joule effect. On the other hand, the feasibility of electrically conductive epoxy resins for de-icing and ice-prevention applications by Joule effect was demonstrated.
在本研究中，已将碳纳米管（CNTs）和石墨加入到环氧树脂基体中，以通过焦耳效应赋予其导电性和自热能力。此外，将两种具有不同形态、表面积和长径比的填料同时加入（混合添加碳纳米管和石墨）到同一环氧树脂基体中，以评估碳材料基树脂的自热能力对除冰和防冰能力的影响。针对室温及低温下的加热应用（用于除冰和防冰），评估了不同填料填充的环氧树脂的焦耳效应自热能力和热导率。结果表明，与填充石墨的环氧树脂相比，碳纳米管的较高长径比决定了环氧树脂具有更高的电导率，但石墨的二维形态使填充环氧树脂具有更高的热导率。石墨的存在增强了填充环氧树脂的热稳定性，有助于避免因环氧树脂软化而产生的变形（热导率越高，散热越快），但对焦耳效应自热没有贡献。另一方面，证明了通过焦耳效应实现导电环氧树脂用于除冰和防冰应用的可行性。
