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

这项建议是为了提高聚合物挤出物的质量，并表征其机械性能，特别是那些旨在用于高强度和型材应用的产品。为了实现这一目标，将探索为金属固态挤压开发的流线型模具设计原则，并将其应用于聚合物。将使用有限元技术来分析流动的材料和模具的变形。将对用于常规挤出和熔体转变共挤出的聚合物进行表征，通过在侧视模具中的观察来证实或改变结果，该侧视模具设计用于容纳雕刻的表面嵌件。这项工作应该导致针对这些类型的聚合物材料的模具设计方法。这项研究应该会改进聚合物的挤出工艺，并对熔体转化共挤出过程有一个科学的理解。这些材料有望在航空航天、医疗、汽车和其他需要高强度和重量特性的应用中得到应用。

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.