Extrudability, printability, and strain rate sensitivity metrics of lightweight thermoplastic polyimide (PI) in material extrusion (MEX) additive manufacturing
Nectarios Vidakis, Nikolaos Michailidis, Nikolaos Mountakis, Maria Spyridaki, Apostolos Argyros, Vasileios Stratiotou Efstratiadis, Emmanuel Stratakis, Markos Petousis
Abstract
. The strain rate sensitivity index and various other rate-dependent interactions were determined and comprehensively discussed. The inclusive findings herein provide critical insights into the overall performance of thermoplastic polyimide in additive manufacturing, aiming to support its broader exploitation in advanced engineering applications.
Topics & Concepts
Materials sciencePolyimideComposite materialStrain rateExtrusionUltimate tensile strengthThermoplasticThermogravimetric analysisDifferential scanning calorimetryScanning electron microscopeMelt flow indexPolymerIndentation hardnessDynamic mechanical analysisThermal stabilitySensitivity (control systems)ToughnessTensile testingExtrusion mouldingThermoplastic polyurethaneVolumetric flow rateRheologyThermomechanical analysisElongationRaman spectroscopyAdditive Manufacturing and 3D Printing TechnologiesPolymer Foaming and CompositesPolymer crystallization and properties