Computer Aided Design/Computer Aided Manufacturing of Dies for High Strength and Profile Polymer Extrusion

该建议是为了提高聚合物挤出物的质量并表征其机械性能，特别是用于高强度和型材应用的那些。为了实现这一目标的原则，流线型模具设计开发的固态挤压金属将被探索和应用到聚合物。有限元技术将被用来分析流动的材料和模具变形。将进行用于常规挤出和熔融转化共挤出的聚合物的表征，通过在设计用于容纳雕刻表面插入物的侧视模头中观察来确认或改变结果。这项工作应导致这些类型的聚合物材料的模具设计方法。这项研究应导致改进的聚合物挤出工艺和熔融转化共挤出工艺的科学理解。这些材料的应用预计在航空航天、医疗、汽车和其他需要高强度重量特性的应用中。

This proposal is to improve the quality of polymeric extrudates and to characterize their mechanical properties, particularly those intended for high strength and profile applications. To achieve this goal the principles of streamlined die design as developed for solid state extrusion of metals will be explored and applied to polymers. Finite element techniques will be used to analyze both the flowing material and the die deformation. Characterization of polymers for conventional extrusion and melt transformation coextrusion will be conducted, with the results confirmed or altered by observation in a side viewing die designed to accommodate sculptured surface inserts. This work should lead to a die design methodology for these types of polymeric materials. This research should result in an improved extrusion process for polymers and a scientific understanding of the melt transformation coextrusion process. Application of these materials is expected in aerospace, medical, automotive, and other applications requiring high strength to weight characteristics.