Hu Yeyuan, Liao Yang, Zheng Yanyan, Ikeda Kosuke, Okabe Ryoji, Wu Ruifen, Ozaki Ryota, Xu Jun, Xu Qingyan
Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Advanced Materials Laboratory of Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Polymers (Basel). 2022 Sep 2;14(17):3646. doi: 10.3390/polym14173646.
As crystallization behavior has a great effect on the injection molding process, the flash differential scanning calorimetry (FSC) method was employed to study the influence of cooling rate on the crystallization behavior of a semi-crystalline polypropylene (PP). As the experimental results show, crystallization temperatures (onset crystallization temperature and maximum crystallization temperature) and crystallinity decrease as the cooling rate increases. In addition, the corresponding mathematical models were established to describe the relationship between the crystallization temperatures/crystallinity and the cooling rate. A revised Tait equation was also carried out based on the mathematical models.
由于结晶行为对注塑成型过程有很大影响，因此采用闪速差示扫描量热法（FSC）研究冷却速率对半结晶聚丙烯（PP）结晶行为的影响。实验结果表明，随着冷却速率的增加，结晶温度（起始结晶温度和最大结晶温度）和结晶度降低。此外，还建立了相应的数学模型来描述结晶温度/结晶度与冷却速率之间的关系。基于这些数学模型还进行了修正的泰特方程研究。
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