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Time and Temperature Dependence of Cell Number and Cell Size of Foamed Plastics

Research Project

Project/Area Number 16560082
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionKANAZAWA INSTITUTE OF TECHNOLOGY

Principal Investigator

SHIMBO Minoru  Kanazawa Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (70142552)

Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2005: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2004: ¥2,700,000 (Direct Cost: ¥2,700,000)
KeywordsFoamed plastics / Cell number / Cell size / Foaming time / Decompression time / Foaming temperature / Viscoelastic behavior / Time-temperature eauivalency / 発砲プラスチック / 気泡密度 / 減圧時間
Research Abstract

The equivalency between the foaming temperature and the decompression rate (decompression time) of the cell number in foamed plastics will be discussed. The blowing agent was soaked into the resin as a solid state at high pressure under temperatures higher than the glass transition temperature of the resin. After foaming agent reached its saturation state, cell nucleation and cell growth were accelerated by decompression. Finally, cell growth was halted by cooling. The following results were obtained. (1)The cell density increases when the decompression rate is quick, i.e. the decompression time is shortened under the condition of low foaming temperature, and cell density decreases when the decompression rate is slow, i.e. decompression time is lengthened under the condition of high foaming temperature. (2)Equivalency is maintained between the temperature dependence and time dependence of the cell density of foamed PS, and it can express with one master curve.
Next, the equivalency betw … More een the foaming time and foaming temperature of the cell number in foamed plastics will be discussed. The blowing agent was soaked into the solid resin at high pressure under temperature lower than the glass transition temperature of the resin. After the blowing agent reached its saturation state, cell nucleation and cell growth were induced by heating various foaming temperatures higher than glass transition temperature and various foaming times after decompression. Finally, cell growth was halted by cooling. The following results were obtained. (1)Cell density of foamed PS and PC plastics shows time and temperature dependence as the cell density becomes large when foaming temperature is low and foaming time is short. (2)Equivalency is maintained between the foaming time and foaming temperature dependence of the cell density of PS and PC foamed plastics, and they can be expressed with one master curve respectively. These results seem to become one technique to select the foaming condition of foamed plastics having required cell densities. Less

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (17 results)

All 2005

All Journal Article (17 results)

  • [Journal Article] Equivalency of Foaming Temperature and Time about Cell Density of Foamed Polystyrene2005

    • Author(s)
      K.Muratani, S.Nakanoho, M.Shimbo
    • Journal Title

      Proc. of 21^st Annual Meeting of PPS, No. SL 15.7

      Pages: 1-8

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Simulation and Experiments for Temperature and Pressure Release Rate Superposition Principal in Physical Polymeric Foaming2005

    • Author(s)
      H.Ogawa, K.taki, K.Muratani, M.Shimbo, M.Ohshima
    • Journal Title

      Proc. of 21^st Annual Meeting of PPS, No. SL 15.2

      Pages: 1-18

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 気泡密度に関する減圧時間と発泡温度の相関関係2005

    • Author(s)
      村谷圭市, 新保 寛
    • Journal Title

      成形加工 17・6

      Pages: 401-406

    • NAID

      10016931872

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Estimation of Cell Size and Cell Density of Foamed Plastics based on Time-Temperature Equivalent Law2005

    • Author(s)
      S.Nakano, K.Muratani, M.Shimbo
    • Journal Title

      Proc.5^th International Conference on Mechanics of Time Dependent Materials,SEM

      Pages: 45-48

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 発泡体の気泡径および気泡密度に関する発泡温度と発泡時間の等価性2005

    • Author(s)
      村谷圭市, 中野 晋, 新保 寛
    • Journal Title

      成形加工 17・11

      Pages: 715-720

    • NAID

      10016953892

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Correlation of Decompression Time and Foaming Temperature on the Cell Density of Foamed Polystyrene2005

    • Author(s)
      K.Muratani, M.Shimbo, Y.Miyano
    • Journal Title

      Cellular Polymer Vo1.24, No.1

      Pages: 15-27

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Equivalency of Foaming Temperature and Time about Cell Density of Foamed Polystyrene2005

    • Author(s)
      K.Muratani, S.Nakano, M.Shimbo
    • Journal Title

      Proc.of 21^<st> Annual Meeting of PPS No.SL 15.7

      Pages: 1-8

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Simulation and Experiments for Temperature and Pressure Release Rate Superposition Principal in Physical Polymeric Foaming2005

    • Author(s)
      H.Ogawa, K.Taki, K.Muratani, M.Shimbo, M.Ohshima
    • Journal Title

      Proc.of 21^<st> Annual Meeting of PPS No.SL 15.2

      Pages: 1-8

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Equivalency of Decompression time and Foaming Temperature of Foamed Plastics2005

    • Author(s)
      K.Muratani, M.Shimbo
    • Journal Title

      Seikei Kakou (in Japanese) Vo1.17, No.6

      Pages: 401-406

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Estimation of Cell Size and Cell Density of Foamed Plastics based on Time-Temperature Equivalent Law2005

    • Author(s)
      S.Nakano, K.Muratani, M.Shimbo
    • Journal Title

      Proc.5^<th> International Conference on Mechanics of Time Dependent Materials SEM

      Pages: 45-48

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Equivalency of Foaming Time and Temperature about Cell Size and Density of Foamed Plastics2005

    • Author(s)
      K.Muratni, S.Nakano, M.Shimbo
    • Journal Title

      Seikei kakou (in Japanese) Vol.17, No.11

      Pages: 715-720

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Equivalency of Foaming Temperature and Time about Cell Density of Foamed Polystyrene2005

    • Author(s)
      K.Muratani, S.Nakano, M.shimbo
    • Journal Title

      Proc.of 21^<st> Annual Meeting of PPS, No. SL 15.7

      Pages: 1-8

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Simulation and Experiments for Temperature and Pressure Release Rate Superposition Principal in Physical Polymeric Foaming2005

    • Author(s)
      H.Ogawa, K.taki, K.muratani, M.Shimbo, M.Ohshima
    • Journal Title

      Proc.of 21^<st> Annual Meeting of PPS, No. SL 15.2

      Pages: 1-18

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 気泡密度に関する減圧時間と発砲温度の相関関係2005

    • Author(s)
      村谷圭市, 新保 實
    • Journal Title

      成形加工 17・6

      Pages: 401-406

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Estimation of Cell Size and Cell Density of Foamed Plastics based on Time-Temperature Equivalent Law2005

    • Author(s)
      S.Nakano, K.Muratani, M.Shimbo
    • Journal Title

      Proc. 5^<th> International Conference on Mechanics of Time Dependent Materials, SEM

      Pages: 45-48

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 発砲体の気泡径および気泡密度に関する発泡温と発泡時間の等価性2005

    • Author(s)
      村谷圭市, 中野 晋, 新保 實
    • Journal Title

      成形加工 17・11

      Pages: 715-720

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Correlation of Decompression Time and Foaming Temperature on the Cell Density of Foamed Polystyrene2005

    • Author(s)
      K.Muratani, M.Shimbo, Y.Miyano
    • Journal Title

      Cellular Polymer 24・1

      Pages: 15-27

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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