Yan Guoli, Li Tingting, Wang Dan, Jiao Yunhong, Xu Jianzhong, Ma Haiyun
College of Chemistry and Materials Science, Hebei University, Baoding 071002, China; The Flame Retardant Material and Processing Technology Engineering Research Center of Hebei Province, Baoding 071002, China.
College of Chemistry and Materials Science, Hebei University, Baoding 071002, China; Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China; The Flame Retardant Material and Processing Technology Engineering Research Center of Hebei Province, Baoding 071002, China.
Int J Biol Macromol. 2025 May;307(Pt 4):142364. doi: 10.1016/j.ijbiomac.2025.142364. Epub 2025 Mar 20.
Early warning materials play a pivotal role in both minimizing property damage and containing the spread of fires. Herein, we report a set of flexible metal-silk fibroin (SF-M) films, which integrates early fire warning capability and excellent flame retardancy in single material. The dissolution of silk fibroin is facilitated by various metal ions (CaCl, MgCl, MnCl, ZnCl, FeCl) and formic acid. A two-stage response to the fire alarm in the present study is firstly reported. The obtained SF-M films can not only achieve super-fast warning responses (only 1-3 s) based on ionic conduction at low temperatures, but also maintain long-lasting alarms after rapid carbonization. Meanwhile, the SF-M films illustrate excellent flame retardant properties, which can easily reach the V-0 rating, and achieve an LOI of as high as 80 % with extremely low heat and smoke release during combustion. The biomass derived SF-M films is expected to show great potential in emerging fields.
早期预警材料在将财产损失降至最低以及控制火灾蔓延方面都起着关键作用。在此，我们报道了一组柔性金属丝素蛋白（SF-M）薄膜，其在单一材料中集成了早期火灾预警能力和出色的阻燃性。丝素蛋白在各种金属离子（氯化钙、氯化镁、氯化锰、氯化锌、氯化铁）和甲酸的作用下得以溶解。本研究首次报道了对火灾警报的两阶段响应。所制备的SF-M薄膜不仅能在低温下基于离子传导实现超快的预警响应（仅1 - 3秒），而且在快速碳化后还能保持持久的警报。同时，SF-M薄膜具有出色的阻燃性能，轻松达到V-0等级，燃烧时热释放和烟雾释放极低，极限氧指数高达80%。源自生物质的SF-M薄膜有望在新兴领域展现出巨大潜力。
