Monitoring of the injection and holding phases by using a modular injection mold
Monitoring of the injection and holding phases by using a modular injection mold
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DOI：
10.1515/polyeng-2016-0321
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发表时间：
2018-01-01
影响因子：
2
通讯作者：
Bielinski, Marek
中科院分区：
文献类型：
--
作者：
Sykutera, Dariusz;Czyzewski, Piotr;Bielinski, Marek
在模腔中引入压力和温度传感器使我们能够确定正在加工的聚合物材料的流变特性。此外，模腔内传感器记录的信号使我们能够监控注射和保持阶段以及聚合物熔体的后续固化。这项研究工作的目的是验证带有压力和温度传感器的实验室注塑模具的操作能力，并且是为研究目的而设计的。通过使用实验室注塑模具获得了用于研究聚合物材料机械性能的标准化测试件。本文介绍了聚酰胺微孔发泡对注塑模具型腔内部条件影响的研究结果。还研究了后续加工周期中聚合物熔体的表观粘度波动。此外，还研究了聚丙烯熔体注射速度的变化对其流变参数的影响。
Introducing pressure and temperature sensors into the mold cavity allows us to determine the rheological properties of the polymeric materials being processed. Furthermore, signals registered by sensors inside the mold cavity allow us to monitor the injection and holding phases as well as the subsequent solidification of the polymer melt. The aim of this research work was to verify the operational abilities of a laboratory injection mold with pressure and temperature sensors and was designed for research purposes. Standardized test pieces to investigate the mechanical properties of polymeric materials were obtained by using a laboratory injection mold. This article presents the investigation results of the influence of microcellular foaming of polyamide on the conditions inside an injection mold cavity. Apparent viscosity fluctuations of polymer melt in subsequent processing cycles were investigated as well. Additionally, the effect of changes in the injection speed of the polypropylene melt on its rheological parameters were investigated.