变热流条件下XPS板辐射引燃特性试验研究
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住房和城乡建设部科学技术项目(2011 K1 53)


Experiment Study on Ignition of XPS Board Exposed to Linear Heat Flux
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    摘要:

    为研究XPS保温板在变化热流作用下的引燃特性,对10组变热流条件下2.2,4.5cm厚XPS保温板辐射引燃特性进行了试验.测量了XPS保温板表面接受到的热辐射强度、引燃时间、表面温度以及质量损失速率.结果表明:0.0194kW/(m2·s)热流变化率不足以引燃XPS保温板试样;当热流变化率大于0.0373kW/(m2·s)时,在热流的作用下XPS保温板表面温度逐渐升高;当温度达到临界着火点时,XPS保温板瞬间燃烧,发出耀眼火焰和黑色浓烟,同时温度闪升至970.5℃左右;当有焰燃烧结束时,表面温度突降,燃烧过程结束;在有焰燃烧阶段,XPS板质量呈线性递减;临界着火点温度为336.0~387.0℃,且XPS保温板引燃时间与热流变化率具有乘幂关系,幂指数约为-0.765.

    Abstract:

    The thermal radiation intensity on the XPS board, the ignition time, the mass loss rate and the surface temperature were measured in 10 sets of ignition experiments of 2.2cm and 4.5cm thick XPS boards. The ignition characteristics of XPS boards in different linear heat flux were studied. The experiment results show that the 0.0194kW/(m2·s) heat flux is not high enough to ignite the samples. Under the heat flux exceeding 0.0373kW/(m2·s), XPS board was heated to the critical ignition temperature and then the sample was suddenly burnt with the glaring flame and black smoke. After combustion of XPS board, the temperature decreased rapidly from 970.5℃ of maximum temperature. And the experiments also show that the mass of XPS boards decreases linearly with time during the rapid burning stage, the critical ignition temperature is 346.0398.0℃, the ignition time has power relation to the heat flux rate with power exponent of -0.765.

    参考文献
    [1]WALTER D C,ANTENIEN R A.Smolder ignition of polyurethane foam:Effect of oxygen concentration[J].Fire Safety Journal,2000,34(4):343 359.
    [2]林龙沅,周建军,路长.聚氨酯泡沫材料引燃发展过程的特性分析[J].火灾科学,2007,16(1):43 47.
    LIN Long yuan,ZHOU Jian jun,LU Chang.Characteristic analysis for smoldering process of polyurethane foam[J].Fire Safety Science,2007,16(1):43 47.(in Chinese)
    [3]汪磊,季经纬,程远平.常见可燃物燃烧特性实验与数值模拟研究[J].中国矿业大学学报,2006,35(6):732 736.
    WANG Lei,JI Jing wei,CHENG Yuan ping.Experimental and numerical simulation research on burning characteristics of common combustible material[J].Journal of China University of Mining and Technology,2006,35(6):732 736.(in Chinese)
    [4]COLLIER P C R,BAKER G B.The influence of construction detailing on the fire performance of polystyrene insulated panels[J].Fire Technology,2013,49(2):195 211.
    [5]徐亮,张和平,万玉田.热塑性装饰材料大尺度火灾实验研究[J].中国科学技术大学学报,2008,38(5):563 568.
    XU Liang,ZHANG He ping,FANG Yu tian.Large scale fire test on thermoplastic linings[J].Journal of University of Science and Technology of China,2008,38(5):563 568.(in Chinese)
    [6]PUTZEYS,O M,FERNANDEZ PELLO A C,URBAN D L.Ignition of combustion modified polyurethane foam[J].Journal of ASTM International,2006,3(3):1 14.
    [7]BILBAO R,MASTRAL J,LANA J A,et al.A model for the prediction of tile thermal degradation and ignition of wood under constant and variable heat flux[J].Journal of Analytical and Applied Pyrosis,2002,62(1):63 82.
    [8]季经纬,程远平,范维澄.变热流条件下木材点燃的实验研究[J].燃烧科学与技术,2005,11(5):448 453.
    JI Jing wei,CHENG Yuan ping,FAN Wei cheng.Experiment study on wood ignition at variable heat flux[J].Journal of Combustion Science and Technology,2005,11(5):448 453.(in Chinese)
    [9]季经纬,杨立中,范维澄.外部热辐射对材料燃烧性能影响的实验研究[J].燃烧科学与技术,2003,9(2):139 142.
    JI Jing wei,YANG Li zhong,FAN Wei cheng.Experimental study on effects of burning behaviours of materials caused by external heat radiation[J].Journal of Combustion Science and Technology,2003,9(2):139 142.(in Chinese)
    [10]路长,彭磊,周建军,等.聚氨酯泡沫材料阴燃的点燃过程[J].燃烧科学与技术,2005,11(6):487 492.
    LU Chang,PENG Lei,ZHOU Jian jun,et al.Smolder ignition of polyurethane foam[J].Journal of Combustion Science and Technology,2005,11(6):487 492.(in Chinese)
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张国维,朱国庆,黄丽丽,韩如适.变热流条件下XPS板辐射引燃特性试验研究[J].建筑材料学报,2013,(5):840-845

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  • 收稿日期:2012-05-03
  • 最后修改日期:2012-06-15
  • 在线发布日期: 2013-10-30
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