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Experimental investigation and numerical modelling of the fire performance for epoxy resin carbon fibre composites of variable thicknesses

机译：变厚度环氧树脂碳纤维复合材料防火性能的实验研究与数值模拟

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摘要

This paper applies a unique integrated approach to determine the flammability properties of a composite material (epoxy with carbon fibre) and compares its fire behaviour at two different thicknesses (2.1 and 4.2 mm) by performing small scale (thermo-gravimetric analysis (TGA)/Fourier transform infrared radiation) and meso-scale tests (cone calorimeter). For small-scale tests, experiments were conducted in nitrogen using TGA coupled to gas analysis by Fourier transform infrared radiation. These results allow the determination of thermal stability, main degradation temperature and main gaseous emissions released during the thermal degradation. For meso-scale tests, experiments were carried out using a cone calorimeter with sample dimensions of 100 x 100 mm at five heat fluxes (30, 40, 50, 60 and 70 kW/m(2)). The results show that the ignition time increases with an increase in the thickness of the material. Relative hazard classification of the fire performance of the current composites has also been compared with other materials using parameters obtained elsewhere. In addition, the effective ignition, thermal and pyrolysis properties obtained from the ignition and mass loss rate experiments for the 4.2-mm thick samples were used in a numerical model for pyrolysis to predict well ignition times, back-surface temperatures and mass pyrolysis rates for all heat fluxes as well as for the 2.1-mm thick samples. Note that the ignition temperature obtained in the cone agrees with the main degradation temperature in the TGA. The flammability properties deduced here can be used to predict the heat release rate for real fire situations using CFD modelling. Copyright (C) 2016 John Wiley & Sons, Ltd.
机译：本文采用独特的集成方法来确定复合材料（环氧树脂和碳纤维）的可燃性，并通过执行小规模（热重分析（TGA）/傅立叶变换红外辐射）和中尺度测试（锥形量热仪）。对于小规模测试，使用TGA在氮气中进行实验，并通过傅立叶变换红外辐射对气体进行分析。这些结果允许确定热稳定性，主要降解温度和在热降解期间释放的主要气体排放。对于中尺度测试，使用锥形量热仪以五个热通量（30、40、50、60和70 kW / m（2））进行测量，样品尺寸为100 x 100 mm。结果表明，点火时间随材料厚度的增加而增加。使用其他地方获得的参数，也已将当前复合材料防火性能的相对危险等级与其他材料进行了比较。此外，将从4.2毫米厚样品的点火和质量损失率实验获得的有效点火，热和热解特性用于热解数值模型，以预测井的点火时间，背面温度和质量热解率。所有热通量以及2.1毫米厚的样品。注意，在锥体中获得的着火温度与TGA中的主要降解温度一致。此处推导的可燃性可用于使用CFD模型预测实际火灾情况下的放热率。版权所有（C）2016 John Wiley＆Sons，Ltd.

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  • 来源
    《Fire and materials》 |2017年第4期|307-322|共16页
  • 作者

    Fateh T.; Zhang J.; Delichatsios M.; Rogaume T.;

  • 作者单位

    Univ Ulster, Inst Built Environm, Sch Built Environm & Res, FireSERT, Newtownabbey BT37 0QB, North Ireland;

    Univ Ulster, Inst Built Environm, Sch Built Environm & Res, FireSERT, Newtownabbey BT37 0QB, North Ireland;

    Univ Ulster, Inst Built Environm, Sch Built Environm & Res, FireSERT, Newtownabbey BT37 0QB, North Ireland;

    Univ Poitiers, ISAE ENSMA, CNRS, Inst Pprime, F-86962 Futuroscope, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cone calorimeter; TGA; epoxy composite; thermal degradation; pyrolysis; gaseous emissions; FTIR;

    机译：锥形量热仪;TGA;环氧复合材料;热降解;热解;气体排放;FTIR;

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