吸音材料として利用可能なアクリルポリマー／液状炭化水素系発泡剤を用いたパルプ繊維発泡体の開発

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  • The Development of the Foam Containing Pulp and Foaming Agent Composed of Acrylic Polymer/Liquid Hydrocarbon for Acoustic Absorption Materials
  • キュウオン ザイリョウ ト シテ リヨウ カノウ ナ アクリルポリマー/エキジョウ タンカスイソケイ ハッポウザイ オ モチイタ パルプ センイ ハッポウタイ ノ カイハツ

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<p>Flexible acoustic absorption materials that can be absorbed some noises with extensive frequencies in various usage environments are required in the recent industry. Previously, the glass wool laminated glass fibers and the urethane foam based on the polyurethane resin have been used as sound absorption materials. However, the recyclability of glass wool and urethane foam are poor because of mineral and thermosetting resin, respectively. Additionally, it is necessary to combine an another acoustic absorption materials for the glass wool in order to absorb noises with extensive frequencies bands. Therefore, the purpose of our study is to development a novel eco-friendly absorption material which has wider range on acoustic absorption band without including an another sound adsorption materials. We suggest the new porous sound absorption material consist of the pulp fiber and the thermally expandable foaming agent which is composed of the acrylic polymer and liquid hydrocarbon. It is reported that the manufacturing process for pulp foaming based on the papermaking and the relationship between the internal structure and absorption behavior depending on the foaming time.</p>

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