Abstract The crystallization behavior of polymers is usually investigated by the Differential Scanning Calorimetry (DSC) under isothermal or non-isothermal conditions, the latter one at constant cooling rates. The results of such experiments are used to calculate the crystallization during the dynamic cooling of processing, for instance with the Nakamura crystallization model. In contrast, in this article the crystallization of Polybutylene Terephthalate (PBT) was measured directly calorimetrically at dynamic cooling. For this purpose, the Fast Scanning Calorimetry (FSC) was used in particular, which can perform fast changes in scan rates. With this new approach, for example, the crystallinity can be determined across the part thickness, without calculating it with a crystallization model. At the same time, the subsequent melting behavior of structures formed during dynamic cooling was investigated. Thus a better interpretation of the first heating run of processed samples is possible.

中文翻译：

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考虑实际加工动态冷却条件的PBT结晶量热分析

摘要 聚合物的结晶行为通常通过差示扫描量热法 (DSC) 在等温或非等温条件下进行研究，后者在恒定冷却速率下。此类实验的结果用于计算加工动态冷却过程中的结晶，例如使用 Nakamura 结晶模型。相比之下，在本文中，聚对苯二甲酸丁二醇酯 (PBT) 的结晶是在动态冷却下直接量热测量的。为此，特别使用了快速扫描量热法 (FSC)，它可以快速改变扫描速率。例如，通过这种新方法，可以确定整个零件厚度的结晶度，而无需使用结晶模型进行计算。同时，研究了动态冷却过程中形成的结构的后续熔化行为。因此，可以更好地解释已处理样品的第一次加热运行。