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首页> 外文期刊>International Journal of Heat and Mass Transfer >Correlation between thermal contact resistance and filling behavior of a polymer melt into multiscale cavities in injection molding
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Correlation between thermal contact resistance and filling behavior of a polymer melt into multiscale cavities in injection molding

机译：注塑成型中聚合物熔体进入多尺度腔体的热接触电阻与填充行为之间的相关性

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摘要

The mechanism through which thermal contact resistance (TCR) is generated and how it changes at the interface between a polymer melt and mold wall during injection molding have not yet been clearly identified. In particular, despite the TCR significantly influencing the surface quality of the resulting part, few studies have reported on the injection molding of a part with microstructural features. In this study, we predict the TCR using a new approach. Through a molding process known as "short shot", we indirectly measured the filling height of patterns as a function of time. In addition, to make these results consistent with filling analysis results, we calculated the TCR through recursive calculations. With this approach, not only changes in the TCR as a function of time but also changes by position were estimated. Furthermore, on the basis of the TCR determined in this manner, the filling behavior of micropatterns according to the change in TCR was examined. Finally, this study shows that artificial control of the roughness of a mold surface leads to control of the TCR, resulting in improved transcription of micropatterns.
机译：尚不清楚形成热接触电阻（TCR）的机理以及在注塑过程中聚合物熔体与模具壁之间的界面如何发生热接触电阻变化。尤其是，尽管TCR显着影响了所得零件的表面质量，但很少有研究报道注塑具有微观结构特征的零件。在这项研究中，我们使用一种新方法来预测TCR。通过称为“短射”的成型工艺，我们间接测量了图案的填充高度随时间的变化。另外，为了使这些结果与填充分析结果一致，我们通过递归计算来计算TCR。通过这种方法，不仅可以估算TCR随时间的变化，而且可以估算出位置变化。此外，基于以此方式确定的TCR，检查了根据TCR变化的微图案的填充行为。最后，这项研究表明，通过人工控制模具表面的粗糙度可以控制TCR，从而改善微图案的转录。

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  • 作者

    Seokkwan Hong; Jeongjin Kang; Kyunghwan Yoon;

  • 作者单位

    Molds & Dies Technology R&BD Group, Korea Institute of Industrial Technology, 397, Seokcheon-ro, Ojeong-gu, Bucheon-si Cyeonggi-do, Republic of Korea,Department of Mechanical Engineering, Dankook University, 152, Jukjeon-ro, Suji-gu, Yongin-si, Gyeonggi-do, Republic of Korea;

    Molds & Dies Technology R&BD Group, Korea Institute of Industrial Technology, 397, Seokcheon-ro, Ojeong-gu, Bucheon-si Cyeonggi-do, Republic of Korea;

    Department of Mechanical Engineering, Dankook University, 152, Jukjeon-ro, Suji-gu, Yongin-si, Gyeonggi-do, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Thermal contact resistance; Micropatterns; Injection molding; Finite element method; Surface roughness;

    机译：热接触电阻;微图案;注塑成型;有限元法;表面粗糙度;

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