Title: Implications of Thermal History on the Melt Processability of Polyphenylene Sulfide

Authors: Lina Ghanbari, Chris Croshaw, Dr. Olivia McNair, and Dr. Jeffrey Wiggins

DOI: 10.33599/nasampe/s.22.0794

Abstract: The realization of Urban Air Mobility (UAM) vehicles is dependent on low-cost high-rate composite manufacturing where viable solutions materialize at the intersection of new materials and innovative processes. Polyphenylene sulfide (PPS) is a high-performance thermoplastic polymer with desirable crystallization times, low melt viscosity, and high degree of crystallinity, however, thermal aging of PPS increases the zero-shear viscosity, retarding melt processing. PPS laminates are readily joined by induction welding processing wherein joining rates are proportional to material melt temperatures and crystallization profiles. For all the positives of PPS, the impacts of thermal aging of the matrix on induction welding efficiency and bond strength are not understood. This work examines the interdependencies of degree of thermal ageing of PPS, crystallization behavior as a function of processing temperature/time, and melt viscoelastic properties of PPS. Differential scanning calorimetry and frequency-dependent rheology were applied to correlate melt-state anneal time to degree of crystallinity and complex viscosity.

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Conference: SAMPE 2022

Publication Date: 2022/05/23

SKU: TP22-0000000794

Pages: 7

Price: $14.00