The demand for smart textiles in wearable technology has significantly increased in the last decade. However, the inherent flammability of most textiles poses a big challenge, especially when exposed to elevated surface temperatures induced by electrical or optical stimuli, increasing the risk of fire. The process of synthesizing flame retardants involves the use of organic solvents, which is not in line with the requirements of sustainable development. This research focuses on establishing an eco-friendly and stable coating for polyamide 6 (PA6) fabric through a solvent-free synthesis and innovative alternating deposition method. It has been demonstrated that the treated PA6 fabric exhibits rapid self-extinguishing properties, eliminating melt dripping and achieving a remarkable limiting oxygen index of 25.5%. Furthermore, the peak heat release rate and total heat release rate of the treated PA6 fabric decrease by 32.9% and 22.7%, respectively, compared to that of the control PA6. Under simulated sunlight exposure at an intensity of 150 mW·cm, the treated PA6 fabric rapidly reaches a surface temperature of 78.6 °C within 300 s. Additionally, the treated PA6 fabric demonstrates an electromagnetic interference (EMI) shielding efficiency of 24.0 dB in the X-band, highlighting the efficacy of the innovative coating. This result is attributed to the conductive network formed by the alternating deposition of MXene and polyphosphamide. This work not only improves the fire safety in wearable textiles but also presents a promising and green strategy for developing multifunctional wearable textiles with enhanced safety features.

中文翻译：

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通过环保涂层增强耐磨聚酰胺织物的防火安全、电磁干扰屏蔽和光热转换性能

过去十年，可穿戴技术对智能纺织品的需求显着增加。然而，大多数纺织品固有的易燃性构成了巨大的挑战，特别是当暴露于电或光刺激引起的表面温度升高时，增加了火灾风险。阻燃剂的合成过程涉及有机溶剂的使用，不符合可持续发展的要求。这项研究的重点是通过无溶剂合成和创新的交替沉积方法为聚酰胺 6 (PA6) 织物建立环保且稳定的涂层。事实证明，经过处理的 PA6 织物具有快速自熄性能，消除了熔滴，并实现了 25.5% 的显着极限氧指数。此外，与对照PA6相比，处理后的PA6织物的峰值放热率和总放热率分别降低了32.9%和22.7%。在150 mW·cm强度的模拟阳光照射下，处理后的PA6织物在300 s内迅速达到78.6 °C的表面温度。此外，经过处理的 PA6 织物在 X 波段的电磁干扰 (EMI) 屏蔽效率为 24.0 dB，凸显了创新涂层的功效。这一结果归因于 MXene 和聚磷酰胺交替沉积形成的导电网络。这项工作不仅提高了可穿戴纺织品的防火安全性，而且为开发具有增强安全功能的多功能可穿戴纺织品提供了一种有前景的绿色策略。