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Study and modeling of heat transfer during the solidification of semi-crystalline polymers

机译:半结晶聚合物凝固过程中传热的研究与建模

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摘要

Semi-crystalline polymers are materials whose behavior during their cooling is difficult to model because of the strong coupling between the crystallization, heat transfer, pressure and shear. Thanks to two original apparatus we study solidification of such a polymer without shear. Firstly the comparison between experimental results and a numerical model will permit to validate crystallization kinetic for cooling rate reachable by DSC. The second experiment makes it possible to analyze solidification for high cooling rate, corresponding to some manufacturing processes. It appears that crystallization has an influence on the thermal contact resistance.
机译:由于结晶,传热,压力和剪切力之间的强耦合,半结晶聚合物是一种材料,其冷却过程中的行为很难建模。由于有两个原始设备,我们研究了这种聚合物在没有剪切力的情况下的固化。首先,将实验结果与数值模型进行比较,可以验证DSC可达到的冷却速率的结晶动力学。第二个实验使分析某些冷却过程的高冷却速率成为可能。似乎结晶对热接触电阻有影响。

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