In this study, high electrical conductivity and flame retardant electrothermal ethylene‐vinyl acetate (EVA) films were fabricated by using carbon nanotubes‐wrapped ammonium polyphosphate (CAPP) and conductive carbon black (CCB). CAPP was used as a synergistic conductive filler and flame retardant to improve the electrical conductivity and fire safety of the electrothermal film at the same time. Besides, the heat release rate (HRR) and the total heat release (THR) of EVA‐5 decreased about 81.5% and 57.3% compared with those of pure EVA film, respectively. Moreover, by incorporating a small amount of CAPP, EVA‐5 can reach up to V‐0 rating with an limiting oxygen index (LOI) value of 31%. EVA film fabricated by CCB and CAPP as conductive material exhibited almost 10 times increment on electrical conductivity than that of same content for CCB alone. And time vs temperature profiles of EVA‐5 showed a stable trend over 3600 seconds without any offset at a given applied voltage of 15 V. Moreover, its excellent cycle heating performance indicated that the electrothermal film can be recycled, which meets the requirements of sustainable development. In a word, this novel strategy provides a simple and effective way to obtain a high conductive and fire safety electrothermal film.

中文翻译：

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乙烯-乙酸乙烯酯电热膜的快速电热响应和出色的阻燃性

在这项研究中，使用碳纳米管包裹的聚磷酸铵（CAPP）和导电炭黑（CCB）制成了高导电率和阻燃电热乙烯-乙酸乙烯酯（EVA）薄膜。CAPP被用作协同导电填料和阻燃剂，以同时提高电热膜的导电性和防火安全性。此外，与纯EVA膜相比，EVA-5的热释放率（HRR）和总热释放（THR）分别降低了约81.5％和57.3％。此外，通过掺入少量的CAPP，EVA-5可以达到V-0等级，极限氧指数（LOI）值为31％。由CCB和CAPP制成的EVA薄膜作为导电材料，其导电率的增量几乎是单独使用CCB的EVA膜的十倍。而且EVA-5的时间与温度曲线在3600秒内显示出稳定的趋势，在给定的15 V施加电压下没有任何偏移。此外，其出色的循环加热性能表明电热膜可以回收利用，满足可持续发展的要求。发展。简而言之，这种新颖的策略提供了一种简单而有效的方法来获得高导电和防火安全的电热膜。