• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Finite Size Gap Effects on the Modeling of Thermal Contact Conductance at Polymer-Mold Wall Interface in Injection Molding
【24h】

Finite Size Gap Effects on the Modeling of Thermal Contact Conductance at Polymer-Mold Wall Interface in Injection Molding

机译：有限间隙对注塑成型中聚合物-模具壁界面热接触传导建模的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Heat transfer in polymer processing by injection molding is affected by the thermal contact conductance at the interface between the polymer and the metal mold. The modeling of thermal contact conductance at such interfaces is simplified by the assumption of an isothermal condition at the two contacting surfaces. In this study we examine the validity of such an assumption for the cage of an interface involving plastic (a low thermal conductivity materia) and metal (a high thermal conductivity material). The study shows that at such an interface between materials of widely varying thermal conductivity, the conditions at the interface depart from the isothermal assumption, with the heat flux becoming more uniform and the temperature difference varying by a larger magnitude across the contact plane. This effet is more pronounced as the width of the gaps increases for the same area of contact. This suggests that the modeling of the contact conductance should be based on average temperatures for the contacting surfaces.
机译：通过注射成型进行的聚合物加工中的热传递受到聚合物和金属模具之间界面处的热接触电导的影响。通过假定两个接触表面的等温条件，简化了在此类界面处的热接触传导模型。在这项研究中，我们检验了这种假设对于包含塑料（低热导率材料）和金属（高热导率材料）的界面笼的有效性。研究表明，在导热系数大不相同的材料之间的这种界面处，界面处的条件偏离了等温假设，热通量变得更加均匀，并且在整个接触面上的温差变化幅度更大。对于相同的接触面积，随着间隙宽度的增加，这种效果更加明显。这表明接触电导的建模应基于接触表面的平均温度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号