Mun Sun-Yeo, Hwang Cheol-Hong
Department of Fire and Disaster Prevention, Daejeon University, 62 Daehak-ro, Dong-Gu, Daejeon 34520, Korea.
Materials (Basel). 2020 Apr 6;13(7):1712. doi: 10.3390/ma13071712.
Flame retardant cables were investigated using thermo-gravimetric analysis to measure the reference temperature and reference rate required for a fire spread simulation using a Fire Dynamics Simulator (FDS). Sensitivity analysis was also performed to understand the effects of the reference temperature and rate on the pyrolysis reactions. A two-step pyrolysis reaction was typically observed regardless of the cable type, and each pyrolysis reaction could be attributed to single or multiple components depending on the cable type and reaction order. Although the structures, compositions, and insulation performances of the cables differed considerably, the reference temperatures of the two-step pyrolysis reaction were extremely similar regardless of the cable type. Conversely, the reference rates of the different types of cables varied significantly. The sensitivity analysis results indicate that the mean values of the reference temperature and rate are sufficient to simulate the pyrolysis reactions of flame retardant cables. The results obtained herein also suggest that the heat transfer and pyrolysis reaction path associated with the multi-layered cable structure may be more important for accurately determining the ignition and fire spread characteristics, which are attributable to differences in cable structure, composition, and insulation performance.
使用热重分析对阻燃电缆进行了研究，以测量使用火灾动力学模拟器（FDS）进行火灾蔓延模拟所需的参考温度和参考速率。还进行了敏感性分析，以了解参考温度和速率对热解反应的影响。无论电缆类型如何，通常都会观察到两步热解反应，并且根据电缆类型和反应顺序，每个热解反应可能归因于单个或多个组分。尽管电缆的结构、组成和绝缘性能有很大差异，但无论电缆类型如何，两步热解反应的参考温度都极为相似。相反，不同类型电缆的参考速率差异很大。敏感性分析结果表明，参考温度和速率的平均值足以模拟阻燃电缆的热解反应。本文获得的结果还表明，与多层电缆结构相关的传热和热解反应路径对于准确确定着火和火灾蔓延特性可能更为重要，这归因于电缆结构、组成和绝缘性能的差异。
