聚合物在气体辅助注射成型中结晶形态的控制

The Control of Crystalline Morphology in Polymer Part Prepared by Gas-assisted Injection Molding

在气体辅助注射成型(GAIM)中,该文通过外场(温度场和剪切场)调控来控制聚丙烯/聚碳酸酯微纤制品内部的形态结构,并采用2D-SXAS和SEM对制品的结晶形态及取向行为进行分析,同时测试样品的机械性能建立了外场-形态结构-力学性能的关系,通过上述实验建立理论到实践的综合性实验课程。实践表明,该课程不仅容易操作且实用性强,能够强化学生的理论知识,更重要的是能够将理论与实践相结合,培养学生的专业素养和创新能力。

The morphological structures in polypropylene/poly^carbonate microfibril parts, which prepared by gas-assisted injec-tion molding （ GAIM） , were controlled by adjusting the external field （temperature and shear field） . SEM and 2D-SAXS were used to display the morphological structure and orientation behavior of polymer components and to test their mechanical properties. At the same time, the mechanical properties of the samples were established to establish the relationship between the field-morphology and mechanical properties, and a comprehensive experimental course was put into practice. Practice shows that this course is helpful to in-tensify student？s professional knowledge and foster innovation abilities, strengthen their theoretical knowledge.