Abstract Annealing and functionalization of carbon nanotube yarns (CNYs) is a prospective way of increasing the electrical conductivity of this material. We show a novel way, the simultaneous annealing and instant coating of the CNY by its resistance-heating in atmospheres of hydrocarbons. This method is capable to preserve the lightweight properties of CNYs and increase the electrical conductivity. It could be raised by a factor of 2 through carbon deposition onto the yarns and the carbon nanotubes (CNTs) inside the yarn structure. By resistance-heating over a multistep process the conductivity could be even increased by a factor of 2.2. Comparison of annealing under atmosphere of different hydrocarbons and at different temperatures reveals the influence of resistance-heating on the structure of CNY.

中文翻译：

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碳纳米管纱线在不同气氛下的电阻加热

摘要 碳纳米管纱线 (CNY) 的退火和功能化是提高该材料导电性的一种有前景的方法。我们展示了一种新颖的方法，即通过在碳氢化合物气氛中电阻加热对 CNY 进行同步退火和即时涂层。这种方法能够保持 CNY 的轻质特性并增加导电性。通过碳沉积到纱线和纱线结构内的碳纳米管 (CNT) 上，它可以提高 2 倍。通过多步骤过程中的电阻加热，电导率甚至可以增加 2.2 倍。不同碳氢化合物气氛和不同温度下退火的比较揭示了电阻加热对CNY结构的影响。