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Effects of hygrothermal aging on the physicochemical and mechanical properties of 3D-printed PA6

Article dans une revue avec comité de lecture
Author
ccSHIRINBAYAN, Mohammadali
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccBENFRIHA, Khaled
127758 Laboratoire Conception de Produits et Innovation [LCPI]
ccAHMADIFAR, Mohammad
127758 Laboratoire Conception de Produits et Innovation [LCPI]
ccPENAVAYRE, Clara
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccNOUIRA, Samia
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccFITOUSSI, Joseph
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/25464
DOI
10.1007/s00170-024-13323-2
Date
2024-02
Journal
The International Journal of Advanced Manufacturing Technology

Abstract

This paper investigates the effects of hygrothermal aging on PA6 filaments used as raw material in fused filament fabrication (FFF). The filaments were subjected to various aging conditions to evaluate their physicochemical and thermomechanical properties. The results show that water was uniformly absorbed at all aging temperatures, although the kinetics of absorption varied. The introduction of water caused an increase in chain mobility, resulting in a decrease in the glass transition temperature, crystallinity, Young’s modulus, tensile strength, and yield strength. These changes in properties followed a consistent trend, with an initial rapid decrease followed by stabilization at a minimum value common to all temperatures. Notably, elongation at break increased sevenfold at the highest temperature. Compared to samples printed with unaged filaments, those produced with aged filaments exhibited a decrease in mechanical properties.

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