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首页> 外文会议>Proceedings of the fire and materials 2015 conference >MILLIGRAM-SCALE FLAME CALORIMETER: A NOVEL INSTRUMENT FOR FLAMMABILITY ASSESSMENT USING MG-SIZED SAMPLES
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MILLIGRAM-SCALE FLAME CALORIMETER: A NOVEL INSTRUMENT FOR FLAMMABILITY ASSESSMENT USING MG-SIZED SAMPLES

机译：毫米级火焰量热仪：使用MG尺寸样品进行易燃性评估的新型仪器

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摘要

Brominated flame retardants (BFRs) are widely used in polymers due to their effectiveness atrnrelatively low cost. Recent studies suggest that certain BFRs may present health and environmentalrnhazards, yet obtaining adequate replacements is an ongoing challenge. To develop new additives, it is notrnonly important to better understand the mechanisms governing the action of BFRs, but it’s also critical thatrnscreening BFR replacement candidates can be done in a cost effective, highly repeatable manner whilernreflecting actual performance during realistic fire scenarios.rnTo address this challenge, a novel apparatus, the Milligram-scale Flame Calorimeter (MFC), is proposed.rnIn MFC, the pyrolysis and gas-phase combustion processes are uncoupled. Samples of 305 mg arernpyrolyzed in anaerobic atmosphere and their pyrolysis products are burned in a laminar diffusion flamernunder controlled and customizable conditions in a fully enclosed system. Heat release information isrnobtained through the oxygen consumption calorimetry. The masses of post-combustion char/solid residuernand solid combustion products (e.g. soot) are measured. In this work, a description of the design,rnparametric optimization of test conditions, and overall testing methodology is given. Heat releasernmeasurements are presented for polystyrene with increasing amounts of brominated polystyrene as well asrnpolybutylene terephthalate with increasing concentrations of aluminum diethylphosphinate.
机译：由于溴化阻燃剂（BFR）的有效性以及相对较低的成本，它们被广泛用于聚合物中。最近的研究表明，某些溴化阻燃剂可能对健康和环境构成危害，但是获得足够的替代品仍是一项持续的挑战。要开发新的添加剂，不仅要更好地了解控制BFR作用的机制，这不仅很重要，而且至关重要的是，可以以经济高效，可重复性高的方式筛选BFR替代候选物，同时还要反映现实火灾场景下的实际性能。挑战，提出了一种新颖的设备，即毫克级火焰量热仪（MFC）。在MFC中，热解和气相燃烧过程是不相关的。将30±5 mg的样品在厌氧气氛中进行热解，并将其热解产物在层流扩散火焰中在可控制和可自定义的条件下在完全封闭的系统中燃烧。通过耗氧量热法获得放热信息。测量燃烧后炭/固体残渣和固体燃烧产物（例如烟灰）的质量。在这项工作中，给出了设计，测试条件的参数优化以及总体测试方法的描述。提出了对于具有增加的溴化聚苯乙烯和具有增加的二乙基次膦酸铝浓度的聚对苯二甲酸丁二醇酯的聚苯乙烯的放热测量。

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  • 会议地点 San Francisco CA(US)
  • 作者

    Fernando Raffan; Xi Ding; Stanislav I. Stoliarov; Roland H. Kraemer;

  • 作者单位

    Department of Fire Protection Engineering, University of Maryland, College Park, USA;

    Department of Fire Protection Engineering, University of Maryland, College Park, USA;

    Department of Fire Protection Engineering, University of Maryland, College Park, USA;

    Advanced Materials Systems Research, BASF-SE, Ludwigshafen, Germany;

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  • 正文语种 eng
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