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A Durable, Flexible, Large‐Area, Flame‐Retardant, Early Fire Warning Sensor with Built‐In Patterned Electrodes
Small Methods ( IF 10.7 ) Pub Date : 2021-01-18 , DOI: 10.1002/smtd.202001040
Fawad Khan 1 , Shanchi Wang 1 , Zhewen Ma 2 , Adnan Ahmed 1 , Pingan Song 3 , Zhiguang Xu 4 , Riping Liu 1 , Huanjie Chi 1 , Jiayi Gu 1 , Long-Cheng Tang 5 , Yan Zhao 1
Affiliation  

Fire has been giving rise to enormous loss of life and property worldwide annually. Early fire warning represents an active and effective means to avoid potential fire hazards before huge losses occur. Despite encouraging advances in early fire warning systems, to date there remains an urgent lack of the design of a durable, flexible, and universal early fire warning sensor for large‐area practical applications. Herein, facile fabrication of a durable, flexible, large‐scale early fire‐warning sensor is demonstrated through constructing a hierarchical flame retardant nanocoating, composed of graphene oxide, poly(dimethylaminoethyl methacrylate), and hexagonal boron nitride, on cotton fabric in combination with the parallelly patterned conductive ink as built‐in electrodes. As‐designed large‐scale sensor (>33 cm and extendable) exhibits a short alarming time of <3 s in response to external abnormal high temperature, heat, or fire. In addition to high washability, flexibility, resistance to abrasion and wear, this hierarchical nanocoating can self‐extinguish, thus enabling the sensor to continue warning during fire. This work offers an inventive concept to develop a universal and large‐scale very early fire‐monitoring platform, which opens up new opportunities for their practical applications in effectively reducing fire‐related casualties and economic losses.

中文翻译:

具有内置图案电极的耐用、灵活、大面积、阻燃、早期火灾预警传感器

火灾每年都在全球范围内造成巨大的生命和财产损失。火灾预警是在重大损失发生前规避火灾隐患的积极有效手段。尽管在早期火灾预警系统方面取得了令人鼓舞的进展,但迄今为止,仍然迫切缺乏用于大面积实际应用的耐用、灵活和通用的早期火灾预警传感器的设计。在此,通过在棉织物上构建由氧化石墨烯、聚(甲基丙烯酸二甲氨基乙酯)和六方氮化硼组成的分级阻燃纳米涂层,并结合平行图案的导电油墨作为内置电极。按照设计的大型传感器(> 33 cm 和可扩展)对外部异常高温、热或火灾的响应时间较短,小于 3 s。除了高耐洗性、柔韧性、耐磨性和耐磨性外,这种分层纳米涂层还可以自熄,从而使传感器能够在火灾期间继续发出警告。这项工作为开发一个通用的、大规模的早期火灾监测平台提供了一个创造性的概念,这为其在有效减少火灾相关人员伤亡和经济损失方面的实际应用开辟了新的机会。
更新日期:2021-01-18
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