分子動力学法によるポリプロピレンの熱粘弾性挙動の数値シミュレーション Numerical Simulation of Thermo-Viscoelastic Behavior of Polypropylene by Molecular Dynamics

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著者

    • 影山 友哉 KAGEYAMA Tomoya
    • 東京理科大学理工学研究科機械工学専攻 Department of Mechanical Engineering, Graduate School of Science and Technology, Tokyo University of Science
    • 小柳 潤 KOYANAGI Jun
    • 東京理科大学基礎工学部材料工学科 Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science
    • 喜多村 竜太 KITAMURA Ryuta
    • 東京理科大学理工学部機械工学科 Department of Mechanical Engineering, Faculty of Science and Technology, Tokyo University of Science
    • 荻原 慎二 OGIHARA Shinji
    • 東京理科大学理工学部機械工学科 Department of Mechanical Engineering, Faculty of Science and Technology, Tokyo University of Science

抄録

Generally, polymer materials such as polypropylene shows a strong time and temperature dependence (viscoelastic behavior). It is reported that deformation could be predict by applying time–temperature superposition principle to long-term viscoelastic behavior. In this study, whether time–temperature superposition principle completed in deformation was checked using a molecular dynamics. Therefore, stress-relaxation test and constant strain rate tensile test were employed for amorphous polypropylene by molecular dynamics. Stress-relaxation tests were performed in 5 temperature standards, and relaxation moduli were gotten. Using the results, master curve was drawn, and shift factor were gotten. Next, the constant strain rate tensile tests were performed in 4 strain speed and 5 temperature standards. The results agree well with the theory curve that demanded from the parameter mentioned above, and Arrhenius equation was applied between temperature–time. Furthermore, the temperature dependence of the volume was checked, and a flexural point was occurred in shift factor. This flexure point almost accorded with a glass transition point (307[K]). It was suggested that time–temperature superposition principle completed in the small transformation of polymer materials.

収録刊行物

  • 日本複合材料学会誌

    日本複合材料学会誌 42(2), 82-87, 2016

    日本複合材料学会

各種コード

  • NII論文ID(NAID)
    130005549338
  • NII書誌ID(NCID)
    AN00196748
  • 本文言語コード
    JPN
  • ISSN
    0385-2563
  • NDL 記事登録ID
    027237947
  • NDL 請求記号
    Z14-655
  • データ提供元
    NDL  J-STAGE 
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