当前位置:首页>武汉>武汉纺织大学于志财&南昆士兰大学霍思奇《‌‌J. Mater. Sci. Technol.》|PEDOT双模光纤,PSS涂层Te纳米线,火灾早期检测

武汉纺织大学于志财&南昆士兰大学霍思奇《‌‌J. Mater. Sci. Technol.》|PEDOT双模光纤,PSS涂层Te纳米线,火灾早期检测

  • 2026-09-27 14:46:44
武汉纺织大学于志财&南昆士兰大学霍思奇《‌‌J. Mater. Sci. Technol.》|PEDOT双模光纤,PSS涂层Te纳米线,火灾早期检测
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可靠且灵活的早期火灾预警传感器在火灾检测中发挥着关键作用,但仍是重大技术挑战。本研究将聚对苯撑双恶唑(PBO)纳米纤维与热电及热致变色(PTT)纳米功能颗粒相结合,构建出一种双模早期火灾预警传感光纤,通过视觉信号与数字信号的协同传感实现精准温度检测。这种核鞘结构的纳米级PTT传感光纤以 PBO 纳米纤维作为外层鞘层,最外层排列有钙钛矿晶体,核心则由聚(3,4-亚乙二氧基噻吩):聚苯乙烯磺酸酯(PEDOT : PSS)@碲纳米线(Te NWs)/聚氨酯复合热电纳米材料构成。将 PEDOT : PSS @Te NWs嵌入核心可实现毫秒级的火灾响应性能(阈值电压:1.0 mV,响应时间:≤0.9秒)以及宽温范围(50–300°C)的火灾预警能力。这种快速响应性能归功于Te纳米线(Te NWs)纳米界面异质结结构的优化,以及形成了可让纳米线穿过的导电网络,从而协同提升了塞贝克系数和导电性(S = 46.5 μV ·K⁻¹, σ = 2.05 × 10⁴ S·m⁻¹)。此外,该传感光纤通过利用比色监测技术和钙钛矿晶体在100–300°C宽温度范围内的热致变色特性,实现了独立的无电源视觉预警功能。本研究提出了一种创新方案,可开发出可靠的实时监测系统,其温度传感精度高达97.25%,适用于燃烧前阶段的早期火灾预警检测。

图1。(a)神经鞘髓鞘形成的结构示意图。(b) PEDOT : PSS @Te纳米线的制备流程。(c)PTT传感光纤的结构设计与制备方法。(d、e)PTT传感光纤的大规模制备工艺。(f)PTT传感光纤的横截面视图。(g)PTT传感光纤的热致变色特性。

图2。(a和b)PEDOT : PSS @Te纳米线的透射电子显微镜(TEM)图像;(c) PEDOT : PSS @Te纳米线的扫描电子显微镜(SEM)图像;(d)纳米线的分散性;(e)界面组装示意图;(f)酸预处理对 PEDOT : PSS 及 PEDOT : PSS @Te纳米线导电性能的影响;(g) PEDOT : PSS 及 PEDOT : PSS @Te纳米线的 FTIR 图;(h–j)其 XPS 图。

图3. (a)传感光纤芯内纳米线的分布示意图。(b)纳米线涂层对热电材料分散性及导电路径影响的示意图。(c)能量过滤效应示意图。(d)PTT传感光纤的热电性能(S和 σ)。(e)PTT传感光纤的功率因子(PF)。(f)PTT传感光纤的电压输出灵敏度。(g)PTT传感光纤在不同温度下的电压输出。(h)PTT传感光纤的温-压关系曲线。(i–k)传感光纤的循环稳定性、弯曲稳定性和环境稳定性。

图4. (a)钙钛矿晶体掺杂示意图;(b)掺杂钙钛矿晶体的 XRD 图谱;(c)PTT传感光纤的 XPS 图谱;(d)PTT传感光纤颜色变化过程的光学图像(300–500 K);(e)CIE-1931色度图;(f)光纤颜色变化原理示意图;(g)PTT传感光纤的PL光谱;(h)远红外光谱与温度的线性拟合曲线;(i)PTT传感光纤的灵敏度曲线;(j)PTT传感光纤的循环稳定性测试结果(100次循环)。

图5。(a)垂直燃烧试验的光学图像。(b)PTT传感光纤的截面图。(c)PTT传感光纤的导数热重分析(DTG)曲线。(d)PTT传感光纤芯层的TG与 DTG 曲线。(e)传感光纤对湿度干扰的抗性。(f)光纤应力-应变曲线。(g)光纤杨氏模量。(h)光纤最大应力与应变值。(i)光纤拉伸循环稳定性(1000次循环)。

图6。(a)火灾预警与报警示意图;(b)不同传感织物的热电预警时间;(c)PTT传感织物在100℃、200℃、300℃及火灾条件下的热电预警时间;(d)PTT传感织物的热电循环测试曲线;(e)PTT传感织物的热电预警时间;(f)PTT传感纤维热电预警时间与其他研究结果的对比;(g)PTT传感织物的视觉传感结构示意图;(h)PTT传感织物在100℃下的CIE-1931色度值;(i)PTT传感织物在100℃下的可视化传感循环测试结果。

图7。(a)人体多传感器与深度学习CNN模型架构示意图。(b)不同温度下的双模信号响应曲线。(c)双模传感的信号处理及预警逻辑流程图。(d和e)单模(热电式)与双模(热电式及热致变色式)混淆矩阵性能对比。(f)单模与双模受试者的ROC曲线下面积。(g)电子纺织材料在早期火灾预警中的应用。

期刊:Journal of Materials Science &Technology
题目:Dual-mode thermoelectric-thermochromic fiber with manipulated PEDOT:PSS-coated Te nanowires for early fire detection
作者:Jie Xu, Xiaoqian Li, Xingyu He, Yudong Wang, Xiaoke Li, Jianan Jiang, Zhaoyun Liu, Min Hong, Hualing He, Zhicai Yu, Siqi Huo
接受日期:First published: 26 May 2026
原文链接:https://doi.org/10.1016/j.jmst.2026.05.053
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  139. /wwwdata/wwwroot/f.460.net.cn/runtime/temp/310a4debc7c38c2726b0b211618749f5.php ( 11.95 KB )
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  1. CONNECT:[ UseTime:0.001264s ] mysql:host=127.0.0.1;port=3306;dbname=f460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.003562s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000999s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000768s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.002836s ]
  6. SELECT * FROM `set` [ RunTime:0.000687s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.002054s ]
  8. SELECT * FROM `article` WHERE `id` = 576431 LIMIT 1 [ RunTime:0.000530s ]
  9. UPDATE `article` SET `lasttime` = 1790678282 WHERE `id` = 576431 [ RunTime:0.003925s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000531s ]
  11. SELECT * FROM `article` WHERE `id` < 576431 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000630s ]
  12. SELECT * FROM `article` WHERE `id` > 576431 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000541s ]
  13. SELECT * FROM `article` WHERE `id` < 576431 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001189s ]
  14. SELECT * FROM `article` WHERE `id` < 576431 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001240s ]
  15. SELECT * FROM `article` WHERE `id` < 576431 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001005s ]
0.072742s