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Polgmeric Foaming and its Process Development

Research Project

Project/Area Number 09650826
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 化学工学一般
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

OHSHIMA Masahiro  Chem.Eng.Dept.KYOTO UNIVERSITY Associate Prof., 工学研究科, 助教授 (60185254)

Co-Investigator(Kenkyū-buntansha) KURAMADA Ken-ichi  Chem.Eng.Dept.KYOTO UNIVERSITY Instructor, 工学研究科, 助手 (80273473)
TANIGAKI Masataka  Chem.Eng.Dept.KYOTO UNIVERSITY Professor, 工学研究科, 教授 (30027148)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1998: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1997: ¥2,700,000 (Direct Cost: ¥2,700,000)
KeywordsPolymericfoam / physical foaming / polymer / polypropylene / CAD / 成形加工 / 気泡成長シミュレーション / 高分子 / 発泡現象
Research Abstract

The effect of processing variables such as concentration of dissolved gas, release rate of pressure and operation temperature on bubble growth dynamics, nucleation rate and final bubble size was examined by both simulation and fundamental experiments. In the polyolefin foaming process, fundamental experiments showed that bubble size increased when the release rate of pressure decreased, whereas bubble size decreased when the operating temperature decreased. Furthermore, a higher concentration of dissolved gas resulted in smaller bubble size. These results were confirmed by numerical simulation that was newly developed in this project. The simulator was developed based on Shafs nucleation and bubble growth models. Both simulation and experimental results elucidated that release rate of pressure, concentration of dissolved gas and operating temperature are the principal factors which control bubble size and foaming density in the polymeric foaming process. Optimal design of die remained as one of the unsolved problems.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 稲森 康次郎 他: "高分子発泡成形における気泡形成シミュレーション(1)" 成形加工. 11・3. 194-201 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 稲森 康次郎 他: "高分子発泡成形における気泡形成シミュレーション(2)" 成形加工. 11・5 印刷中. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] INAMORI,K.: "Numerical Simulation for Polymeric Foaming (1)" J of Japan Sociely of Polymer Processing (JSPP). Vol.11 No.3. 194-201 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] INAMORI,K.: "Numerical Simulation for Polymeric Foaming (2)" JSPP. Vol.11 No.5 (in press). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 稲森康次郎他: "高分子発泡成形における気泡形成シミュレーション(1)" プラスチック成形加工. 11-3(印刷中). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 稲森康次郎他: "高分子発泡成形における気泡形成シミュレーション(2)" プラスチック成形加工. 11・5(印刷中). (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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