高分子の微細・精密加工とキャラクタリゼーション　ＩＩ　大型射出成形品における結晶化予測

DOI Web Site 被引用文献2件 参考文献17件

書誌事項

タイトル別名
  • Characterization of Polymers for Fine Processing. II. Simulation of Crystallization in Injection Molding Process with a Large Mold.
  • オオガタ シャシュツ セイケイヒン ニ オケル ケッショウカ ヨソク

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抄録

We have calculated the crystallization of isopolypropylene (iPP) during injection molding in the case of large molded products. Due to the long filling time, the crystallization started during the filling stage just inside the surface layer of the product. On the other hand, the relative crystallinity at the surface did not reach 100% even at the end of the cooling stage. Since pressure becomes very high during the molding process of large products, the dependence of the linear growth rate of spherulite G not only on temperature but also on pressure is very important in determining the crystallization. At the surface of the product, low temperature and high pressure make G so low that the crystallization does not complete even at the end of the cooling stage.

収録刊行物

  • 高分子論文集

    高分子論文集 53 (6), 333-338, 1996

    公益社団法人 高分子学会

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