集成核壳结构双模热响应光电传感光纤，用于准确的温度识别和早期火灾预警

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-08-12 DOI:10.1016/j.cej.2025.167127

Hualing He, Jie Xu, Md Hasib Mia, Zhonghe Yu, Yuhang Wan, Qing Jiang, Xueru Qu, Jinru Liu, Lin Hou, Yueyue Song, Zhicai Yu

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引用次数: 0

摘要

智能火灾报警传感器在火灾发生前的温度感知和火灾报警方面具有重要的应用潜力。然而，它们的循环稳定性，特别是在长时间火焰攻击下的精确火灾识别和预警能力仍然是一个严峻的挑战。在此，我们提出了一种具有热响应式光电协同响应能力的智能芯-护套结构温度信息传输光纤（TTF），用于精确的温度识别和火灾报警。TTF通过同轴湿纺丝、溶胶-凝胶转化、冷冻干燥、纳米涂层等工艺组装而成，由聚（3,4-乙烯二氧噻吩）-聚（苯乙烯磺酸盐）(PEDOT:PSS)/单壁碳纳米管（swcnts - cooh）热电（TE）芯、阻燃聚（对苯并苯二恶唑）纳米纤维(PNFs) /蒙脱土（MMT）保护护套和热致变色/MMT复合材料的外涂层组成。柔性双参数温度传感TTF的塞贝克系数最大可达40.8 μV·K−1，基于TE电压与温差的线性关系，在50-300 °C范围内具有精确的电响应温度监测。此外，将TTF集成到阻燃芳纶织物中，并与彩色比色传感器耦合开发了专用火灾报警传感器，通过混淆矩阵分析验证了2.5 s的色过渡响应和96.80 %的温度识别精度。此外，刚性PBO纳米纤维作为护套骨架，使纤维具有优异的阻燃性（极限氧指数为42.50 %）和力学性能（应力为12.29 MPa）。本研究为提高早期火灾预警传感器的耐久性和温度识别精度提供了新的途径，从而促进其在智能火灾预警材料中的广泛应用。

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Integrated core-shell structured dual-mode thermoresponsive optical-electrical sensing fiber for accurate temperature recognition and early fire warning

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Integrated core-shell structured dual-mode thermoresponsive optical-electrical sensing fiber for accurate temperature recognition and early fire warning

Intelligent fire warning sensors exhibit significant potential for application in temperature perception and fire alarm before fire hazards. However, their cyclic stability, particularly precise fire identification and warning ability under prolonged flame attack, remains a critical challenge. Herein, we proposal an intelligent core–sheath structured temperature message transmission fiber (TTF) with thermoresponsive optical-electrical synergistic response capabilities for accurate temperature identification and fire alarm. The TTF is assembled through coaxial wet spinning, follow by sol–gel transformation, freeze drying process, and nanocoating process, which consists of poly (3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS)/single-walled carbon nanotube (SWCNT-COOH) thermoelectric (TE) core, flame-retardant poly(p-phenylene benzobisoxazole) nanofibers (PNFs) /montmorillonite (MMT) protecting sheath, and an outer coating of thermochromic/MMT composites. The flexible dual-parameter temperature sensing TTF exhibits a maximum Seebeck coefficient of 40.8 μV·K⁻¹ and precise electrical response temperature monitoring at 50–300 °C base on a linear relationship between TE voltage and temperature difference. Moreover, a dedicated fire alarm sensor was developed by integrating TTF into flame-retardant aramid fabric and coupling with a color colorimetric sensor, demonstrating a 2.5 s chromatic transition response with 96.80 % temperature recognition accuracy validated through confusion matrix analysis. Furthermore, the rigid PBO nanofibers act as a sheath backbone, giving the fibers excellent flame retardancy (ultimate oxygen index of 42.50 %), mechanical properties (stress of 12.29 MPa). This study presents a new approach for enhancing the durability and temperature identification accuracy of early fire warning sensors, thereby promoting their broad application in intelligent fire warning materials.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.