Effects of Size and Shape of Polymers on Spreading a Fire

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  • TAKASA Kenji
    Membrane Technologies Laboratory, Corporate Research & Development Administration, Asahi KASEI Corporation
  • NAMIKI Hideo
    Kita-Kanto Regional Office, National Institute of Technology and Evaluation
  • KATSUKI Hiroko
    Kita-Kanto Regional Office, National Institute of Technology and Evaluation
  • YUKUMOTO Masao
    DME Project, JFE Holdings, Inc.
  • MIZUNO Kohshiroh
    Nagoya University, Graduate School of Engineering, Department of Materials, Physics and Energy Engineering
  • ISHIKAWA Tomoyuki
    Nagoya University, Graduate School of Engineering, Department of Materials, Physics and Energy Engineering
  • TAKEDA Kunihiko
    Nagoya University, Graduate School of Engineering, Department of Materials, Physics and Energy Engineering Institute for Advanced Research, Nagoya University

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Other Title
  • 高分子材料の形状と延焼による着火危険性
  • コウブンシ ザイリョウ ノ ケイジョウ ト エンショウ ニ ヨル チャッカ キケンセイ

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Abstract

The ignition properties of PP (polypropylene) and HIPS (high impact polystyrene) were studied as examples of plastics for general use. PC (polycarbonate) was studied as an example of engineering plastics and ABS (acrylonitrile-butadiene-styrene polymer) was also studied. Along with the analysis of thermogravimetry and the combustion test, the three-dimensional position of the specimen was controlled between the shape of the specimen and the ignition characteristics and the heat source. The heat sources are in plane view position (position in which the heat source irradiates a plane part of the specimen: PVP) and in side view position (position in which the side part is similarly irradiated: SVP). In the case of PVP, the slopes of the relationships between the inverse ignition time and the heat flux to the thickness of the specimen were constant. They cross at a point in SVP. The critical heat flux (CHF) depends on the kinds of polymer. However, when CHF is corrected by specific heat and specific gravity, it was shown that it is not dependent on the kinds of polymer in PVP. The phenomena of SVP is more complicated than that of PVP, but the heat fluxes to ignition calculated from the cross point were nearly the same for HIPS, ABS and PC, at about 1,200 kJ/m2.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 63 (4), 225-233, 2006

    The Society of Polymer Science, Japan

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