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

本建议是为了提高聚合物挤出物的质量，并描述其机械性能，特别是那些用于高强度和型材应用的机械性能。为了实现这一目标，流线型模具设计的原则，已开发的固体金属挤压将探索和应用于聚合物。有限元技术将用于分析流动材料和模具变形。将对传统挤压和熔融转化共挤压的聚合物进行表征，并通过在设计用于容纳雕刻表面插入的侧面观察模具中观察来确认或改变结果。这项工作应该导致这些类型的聚合物材料的模具设计方法。这项研究将有助于改进聚合物的挤出工艺，并对熔体相变共挤出工艺有一个科学的认识。这些材料有望应用于航空航天、医疗、汽车和其他需要高强度和高重量特性的应用。

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.