在可控气氛锥量热计中,在降低氧浓度下,聚甲基丙烯酸甲酯和聚氯乙烯与火的反应

IF 1.9 4区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY
S. Chatenet, O. Authier, S. Bourbigot, G. Fontaine
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引用次数: 2

摘要

电缆护套是核电站中最丰富的火灾负荷,主要发生在承受轻微压力的房间中。这种配置会导致火灾在通风和污浊的条件下蔓延。评估火灾威胁包括表征释放的热量,这些热量是火灾发展的原因,以及产生的烟雾,这些烟雾可能与该地区的敏感成分相互作用。为此,设计、设置了一个重新访问的受控大气锥形量热计,并将其连接到傅立叶变换红外光谱仪和电低压冲击器,以分别同时测量释放的气体和气溶胶。这种台式仪器首次通过了聚甲基丙烯酸甲酯的鉴定。它已被第二次用于表征聚氯乙烯电缆护套在通风和污浊条件下对火灾的代表性材料反应。通风不足的火灾中的腐败现象似乎降低了热量释放率和燃料质量损失率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reaction to fire of polymethylmethacrylate and polyvinylchloride under reduced oxygen concentrations in a controlled-atmospherecone calorimeter
Electrical cable sheaths are the most abundant fire load in nuclear power plants, mainly in rooms that are kept in under slight pressure. This configuration leads fires to grow in under-ventilated and vitiated conditions. Assessing fire threat involves characterizing the heat released, responsible for fire growth, and the smoke evolved, which may interact with sensitive components in the area. For that purpose, a revisited controlled-atmosphere cone calorimeter has been designed, set up, and coupled to a Fourier transformed infrared spectrometer and an electrical low-pressure impactor to measure simultaneously the evolved gases and aerosols, respectively. This bench-scale apparatus has been first qualified with polymethylmethacrylate. It has second been used to characterize polyvinylchloride cable sheath representative material reaction to fire in under-ventilated and vitiated conditions. It appeared that vitiation in under-ventilated fires lowers the heat release rate and the fuel mass loss rate.
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来源期刊
Journal of Fire Sciences
Journal of Fire Sciences 工程技术-材料科学:综合
CiteScore
4.00
自引率
0.00%
发文量
14
审稿时长
2.5 months
期刊介绍: The Journal of Fire Sciences is a leading journal for the reporting of significant fundamental and applied research that brings understanding of fire chemistry and fire physics to fire safety. Its content is aimed toward the prevention and mitigation of the adverse effects of fires involving combustible materials, as well as development of new tools to better address fire safety needs. The Journal of Fire Sciences covers experimental or theoretical studies of fire initiation and growth, flame retardant chemistry, fire physics relative to material behavior, fire containment, fire threat to people and the environment and fire safety engineering. This journal is a member of the Committee on Publication Ethics (COPE).
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