Blending Recycled Nylon 6,6 and Polyphthalamide for High Temperature Applications

Paper #:
  • 2017-01-0483

Published:
  • 2017-03-28
Abstract:
Ryan Vadori,1,2,3 Alper Kiziltas1, Deborah Mielewski1, Manju Misra2,3, Amar K. Mohanty2,3 1 Materials Research and Advanced Engineering, Ford Motor Company, 2101 Village Road, Dearborn, Michigan 48124 2 College of Physical and Engineering Science, School of Engineering, University of Guelph, Guelph, Ontario, Canada N1G 2W1 3 Bioproducts Discovery and Development Centre, Department of Plant Agriculture, Recent environmental concerns have caused manufacturers to consider the entire life cycle of their products. Recycling materials from end-of-life products is very beneficial for producers and the environment. It has been found that Nylon 6,6 (PA6,6) can be recycled from different sources such as carpet. At the same time, automotive manufacturers are attempting to use lightweight materials for various applications. This has led to replacement of metallic parts with high performance plastics. In this work, recycled Nylon 6,6 is melt blended with polyphthalamide (PPA) to create high performance materials with a balance of cost and sustainability for the automotive industry. Specifically, the materials are intended for exterior and high temperature automotive environments. Miscibility studies were done via differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) to determine windows of thermodynamically favorable mixing between the two polymers. Mechanical properties were measured through tensile, flexural, and impact tests. The crystallinity of the neat polymers was determined and compared to the blends. Finally, scanning electron microscopy (SEM) was used on selected blends to determine the microstructure and phase structure. These studies indicate the effectiveness of these blends for the aforementioned automotive applications.
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