成形加工
Online ISSN : 1883-7417
Print ISSN : 0915-4027
ISSN-L : 0915-4027
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32 巻, 6 号
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目次
巻頭言
解説：特集　電池の最新動向
講座：射出成型金型の機構と制作法
技術報告
会議・見本市だより
論文
  • パルプ繊維と熱可塑性発泡剤を用いた吸音材料の開発
    ―パルプ繊維濃度が発泡構造と吸音特性に及ぼす影響―
    筧 瑞恵, 赤木 寛人, 植松 英之, 田上 秀一
    原稿種別: 研究論文
    2020 年 32 巻 6 号 p. 220-224
    発行日: 2020/05/20
    公開日: 2020/06/20
    DOIhttps://doi.org/10.4325/seikeikakou.32.220
    ジャーナル フリー
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     In recent years, flexible acoustic absorption materials that can absorb noise with extensive frequencies in various usage environments are required in industry. Conventionally, glass wool laminated glass fiber and urethane foam based on polyurethane resin have been used as sound absorption materials. However, the recyclability of glass wool and urethane foam is poor because of mineral resin and thermosetting resin. Additionally, it is necessary to combine other acoustic absorption materials for glass wool in order to absorb noises with extensive frequency bands.
      Therefore, the purpose of our study is to develop a novel eco-friendly absorption material which has wider range on the acoustic absorption band without including another sound adsorption material. We suggest the new porous sound absorption material consisting of pulp fiber and thermally expandable foaming agent composed of acrylic polymer and liquid hydrocarbon.
     In this study, to clarify the relationship between the concentration and foaming behavior of pulpfiber in aqueous solution, the rheological properties and the internal structure of the foam bodywere investigated.

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