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A high-thermopower ionic hydrogel for intelligent fire protection
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-09-14 , DOI: 10.1039/d2ta05737a Changcheng Jiang 1 , Xuejun Lai 1 , Zhengzhong Wu 1 , Hongqiang Li 1 , Xingrong Zeng 1 , Yinan Zhao 1 , Qingtao Zeng 1 , Jiefeng Gao 2 , Yurong Zhu 1
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-09-14 , DOI: 10.1039/d2ta05737a Changcheng Jiang 1 , Xuejun Lai 1 , Zhengzhong Wu 1 , Hongqiang Li 1 , Xingrong Zeng 1 , Yinan Zhao 1 , Qingtao Zeng 1 , Jiefeng Gao 2 , Yurong Zhu 1
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High fire-safety and sensitive temperature-response materials are urgently needed for the development of intelligent fire protection. Herein, a multifunctional flame-retardant ionic hydrogel (HTIG) with high thermopower was fabricated via free-radical polymerization. The HTIG exhibited high thermopower, sensitive fire warning and strain sensing, excellent flame retardancy and self-adhesive performance. The thermopower of the HTIG was as high as 3.04 mV K−1, which was tens of times higher than those of traditional electronic thermoelectric materials, and it showed a good linear relationship between the voltage and temperature difference. When being burned, the HTIG triggered the fire alarm in about 4 s and generated a voltage of more than 100 mV. More importantly, the HTIG showed high fire safety. It was quickly self-extinguished when removed from the fire. It increased the limiting oxygen index (LOI) of wood from 27% to more than 80%. Besides, the HTIG displayed good strain sensing performance, which could be used for motion monitoring. Our work provided new insights for the preparation of the next generation of intelligent multifunctional fireproof materials.
中文翻译：
一种用于智能消防的高热能离子水凝胶
智能消防的发展迫切需要高防火安全性和敏感温度响应材料。在此，通过自由基聚合制备了一种具有高热功率的多功能阻燃离子水凝胶（HTIG） 。HTIG 表现出高热电势、灵敏的火灾报警和应变传感、优异的阻燃性和自粘性能。HTIG的热电势高达3.04 mV K -1，比传统的电子热电材料高出几十倍，并且在电压和温差之间表现出良好的线性关系。当被烧毁时，HTIG 在大约 4 秒内触发了火警，并产生了超过 100 mV 的电压。更重要的是，HTIG表现出很高的防火安全性。从火中取出后，它很快就自行熄灭了。它将木材的极限氧指数 (LOI) 从 27% 提高到 80% 以上。此外，HTIG表现出良好的应变传感性能，可用于运动监测。我们的工作为下一代智能多功能防火材料的制备提供了新的思路。
更新日期：2022-09-14
中文翻译：
一种用于智能消防的高热能离子水凝胶
智能消防的发展迫切需要高防火安全性和敏感温度响应材料。在此，通过自由基聚合制备了一种具有高热功率的多功能阻燃离子水凝胶（HTIG） 。HTIG 表现出高热电势、灵敏的火灾报警和应变传感、优异的阻燃性和自粘性能。HTIG的热电势高达3.04 mV K -1，比传统的电子热电材料高出几十倍，并且在电压和温差之间表现出良好的线性关系。当被烧毁时，HTIG 在大约 4 秒内触发了火警，并产生了超过 100 mV 的电压。更重要的是，HTIG表现出很高的防火安全性。从火中取出后，它很快就自行熄灭了。它将木材的极限氧指数 (LOI) 从 27% 提高到 80% 以上。此外，HTIG表现出良好的应变传感性能，可用于运动监测。我们的工作为下一代智能多功能防火材料的制备提供了新的思路。
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