Abstract Epoxy coatings doped with graphene nanoplatelets (GNP) with average thickness close to 200 μm have been manufactured on glass fibre laminate substrate. Their electrical conductivity was close to 0.001–0.01 S/m because the GNP percentages added (8–12 wt% GNP) were higher than the electrical percolation threshold of this GNP/epoxy system. The electrical current increases exponentially with the applied voltage due to the self-heating of the samples. Therefore, these materials don't follow the Ohm's law. Interestingly, the electrical resistance remains constant, or even decreases, at cryogenic temperatures. Self-heating of GNP/epoxy coatings due to Joule's effect was also studied, analysing the effect of the applied voltage. The coating doped with the highest GNP content presented more efficient heating due to its higher electrical conductivity and therefore higher transported electrical current. The application of a relatively high voltage, 750–800 V, induced the self-heating of materials, which was used for anti-icing and de-icing applications. Different thermoelectrical tests at low temperatures, between −10 and −30 °C, have been designed and carried out, confirming the high efficiency of these materials as an anti-icing and de-icing system (ADIS) which required low electrical power, close to 2.5 W, showing a short time to melt the ice and high reproducibility.

中文翻译：

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基于焦耳加热石墨烯纳米片的防冰和除冰涂层

摘要 在玻璃纤维层压基板上制造了平均厚度接近 200 μm 的掺杂石墨烯纳米片 (GNP) 的环氧树脂涂层。它们的电导率接近 0.001–0.01 S/m，因为添加的 GNP 百分比（8–12 wt% GNP）高于该 GNP/环氧树脂系统的电渗透阈值。由于样品的自热，电流随着施加的电压呈指数增加。因此，这些材料不遵循欧姆定律。有趣的是，电阻在低温下保持不变，甚至降低。还研究了由于焦耳效应引起的 GNP/环氧树脂涂层的自热，分析了施加电压的影响。掺杂了最高 GNP 含量的涂层由于其更高的导电性和更高的传输电流而呈现出更有效的加热。施加相对较高的 750-800 V 电压会引起材料的自热，用于防冰和除冰应用。在 -10 至 -30 °C 的低温下设计并执行了不同的热电测试，证实了这些材料作为防冰除冰系统 (ADIS) 的高效率，需要低电力，关闭到 2.5 W，显示出融化冰的时间短和重现性高。用于防冰和除冰应用。在 -10 至 -30 °C 的低温下设计并执行了不同的热电测试，证实这些材料作为防冰和除冰系统 (ADIS) 的高效率，需要低电力，关闭到 2.5 W，显示出融化冰的时间短和重现性高。用于防冰和除冰应用。在 -10 至 -30 °C 的低温下设计并执行了不同的热电测试，证实了这些材料作为防冰除冰系统 (ADIS) 的高效率，需要低电力，关闭到 2.5 W，显示出融化冰的时间短和重现性高。