Development of a Non-Isothermal, Non-Newtonian Flow Simulation for Mixing Polymer Blends

DMI-9634701奥斯瓦尔德在大多数聚合物加工过程中，最终部件的质量在很大程度上要归因于聚合物混合物的混合和加工过程中发生的粘性加热。混合的质量对材料性能和成型零件的成形性都有很大影响。优化混合过程既耗时又昂贵。通常需要建造复杂的可视化设备，即带有透明桶的模型挤出机，以对混合过程进行鉴定。本研究项目将研究一个模拟程序，并模拟聚合物共混物在复杂的三维混合设备中的混合现象，如单螺杆挤出机和螺杆挤出机。该项目是美国国家科学基金会的目标项目，将与3M工艺开发-聚合物加工实验室合作。流动可视化实验将在威斯康星大学进行，双螺杆挤出实验将在3M进行。这一研究项目的结果可以为优化现有加工设备和通过混合现有聚合物、填料和溶液开发新的工程材料提供有价值的发现。

DMI-9634701 Osswald In most polymer processes the quality of the final part stems back in great part to the mixing of the polymer blends and the viscous heating that occurs during the process. Both the material properties and the formability of the component into shaped parts are highly influenced by the quality of the mixing. Optimizing mixing processes is time consuming and expensive. It is often necessary to build complex visualization equipment, i.e. model extruders with transparent barrels, to qualify the mixing processes. This research project will investigate a simulation program and to model the mixing phenomena of polymer blends inside complex three dimensional mixing devices, such as single and screw extruders. This project is a NSF GOALI project and will be in partnership with 3M Process Development-Polymer Processing Laboratory. The flow visualization experiments will be performed at the University of Wisconsin and the twin screw extrusion experiments will be carried out at 3M. Results of this research project could provide valuable findings in the optimization of existing processing equipment and development of new engineering materials through blending of existing polymers, fillers, and solutions.