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首页> 外文会议>Proceedings of the fire and materials 2015 conference >USING THE CONE CALORIMETER TO DEVELOP A DETAILED MODEL OF CARPET FOR FLAMMABILITY STUDIES
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USING THE CONE CALORIMETER TO DEVELOP A DETAILED MODEL OF CARPET FOR FLAMMABILITY STUDIES

机译：使用圆锥量热仪开发地毯的详细模型以进行易燃性研究

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A fundamental mathematical model of carpet is needed for studying the impact of componentrnmaterials and thicknesses on tests that measure flammability. Of particular interest is the ASTM E648rnradiant panel test, which is used to qualify floor coverings for commercial installations. Thernflammability characteristics of carpet in the cone calorimeter are expected to relate closely to carpetrnbehavior in the ASTM E648 test. Accordingly, the combination of materials and their properties werernsought that produces a match between cone calorimeter modeling and experiment. Carefulrnmeasurements were taken from cone tests performed on broadloom style carpet composites for threerntypes of fiber, on fiber plus primary backing alone, and on samples with adhesive plus one or bothrnbackings. Steps were taken to overcome the challenge of securing thin materials that curl and shrinkrnduring testing. This combination of tests enabled the determination of mass fraction, char yield, andrnheat of combustion for each individual component as well as capturing critical information such asrntime to ignition and effective heat of combustion for whole samples. These values can be used asrninput parameters for a cone calorimeter model to compare with experimental results.rnA simple transformation was found that collapses plots of heat release rate (HRR) for cone heat fluxesrnbetween 15 kW/m~2 and 35 kW/m~2 into a single curve for each carpet type. Broadloom style carpet isrnneither thermally thick nor thermally thin. As with many materials, however, both peak heat releasernrate (PHRR) and inverse time to ignition are linear functions of cone heat flux. The recognition thatrnthe inverse time to PHRR is also a linear function of cone heat flux results in the universal curve. Thisrnbehavior may permit a more simplified approach to modeling more complex problems.
机译：需要地毯的基本数学模型来研究部件材料和厚度对可燃性测试的影响。特别令人感兴趣的是ASTM E648辐射板测试，该测试用于鉴定商用安装的地板覆盖物。在ASTM E648测试中，锥形量热仪中地毯的可燃性特性与地毯的性能密切相关。因此，寻求材料的组合及其性能，以使锥形量热仪的建模与实验相匹配。从对三种类型的纤维的宽幅地毯式地毯复合材料，仅在纤维加上主要底衬的情况下以及在带有粘合剂和一种或两种底衬的样品上进行的锥形测试中进行了仔细的测量。采取了一些措施来克服确保在测试过程中卷曲和收缩的薄材料的挑战。通过这些测试组合，可以确定每个单独成分的质量分数，炭产率和燃烧热，并可以获取关键信息，例如整个样品的着火时间和有效燃烧热。这些值可以用作锥量热仪模型的输入参数以与实验结果进行比较。rn发现一个简单的变换，即锥热通量介于15 kW / m〜2和35 kW / m〜2之间的放热率（HRR）的塌陷图每种地毯类型变成一条曲线。宽幅地毯式地毯既不热也不热。但是，与许多材料一样，峰值放热率（PHRR）和起燃时间都与锥体热通量呈线性关系。认识到PHRR的逆时间也是锥体热通量的线性函数，这导致了通用曲线。这种行为可能允许采用更为简化的方法来对更复杂的问题进行建模。

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