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Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers
In outdoor environments, the action of the Sun through its ultraviolet radiation has a degrading effect on most materials, with polymers being among those affected. In the past few years, 3D printing has seen an increased usage in fabricating parts for functional applications, including parts destin...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659210/ https://www.ncbi.nlm.nih.gov/pubmed/34883635 http://dx.doi.org/10.3390/polym13234132 |
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author | Amza, Catalin Gheorghe Zapciu, Aurelian Baciu, Florin Vasile, Mihai Ion Nicoara, Adrian Ionut |
author_facet | Amza, Catalin Gheorghe Zapciu, Aurelian Baciu, Florin Vasile, Mihai Ion Nicoara, Adrian Ionut |
author_sort | Amza, Catalin Gheorghe |
collection | PubMed |
description | In outdoor environments, the action of the Sun through its ultraviolet radiation has a degrading effect on most materials, with polymers being among those affected. In the past few years, 3D printing has seen an increased usage in fabricating parts for functional applications, including parts destined for outdoor use. This paper analyzes the effect of accelerated aging through prolonged exposure to UV-B on the mechanical properties of parts 3D printed from the commonly used polymers polylactic acid (PLA) and polyethylene terephthalate–glycol (PETG). Samples 3D printed from these materials went through a dry 24 h UV-B exposure aging treatment and were then tested against a control group for changes in mechanical properties. Both the tensile and compressive strengths were determined, as well as changes in material creep characteristics. After irradiation, PLA and PETG parts saw significant decreases in both tensile strength (PLA: −5.3%; PETG: −36%) and compression strength (PLA: −6.3%; PETG: −38.3%). Part stiffness did not change significantly following the UV-B exposure and creep behavior was closely connected to the decrease in mechanical properties. A scanning electron microscopy (SEM) fractographic analysis was carried out to better understand the failure mechanism and material structural changes in tensile loaded, accelerated aged parts. |
format | Online Article Text |
id | pubmed-8659210 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-86592102021-12-10 Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers Amza, Catalin Gheorghe Zapciu, Aurelian Baciu, Florin Vasile, Mihai Ion Nicoara, Adrian Ionut Polymers (Basel) Article In outdoor environments, the action of the Sun through its ultraviolet radiation has a degrading effect on most materials, with polymers being among those affected. In the past few years, 3D printing has seen an increased usage in fabricating parts for functional applications, including parts destined for outdoor use. This paper analyzes the effect of accelerated aging through prolonged exposure to UV-B on the mechanical properties of parts 3D printed from the commonly used polymers polylactic acid (PLA) and polyethylene terephthalate–glycol (PETG). Samples 3D printed from these materials went through a dry 24 h UV-B exposure aging treatment and were then tested against a control group for changes in mechanical properties. Both the tensile and compressive strengths were determined, as well as changes in material creep characteristics. After irradiation, PLA and PETG parts saw significant decreases in both tensile strength (PLA: −5.3%; PETG: −36%) and compression strength (PLA: −6.3%; PETG: −38.3%). Part stiffness did not change significantly following the UV-B exposure and creep behavior was closely connected to the decrease in mechanical properties. A scanning electron microscopy (SEM) fractographic analysis was carried out to better understand the failure mechanism and material structural changes in tensile loaded, accelerated aged parts. MDPI 2021-11-26 /pmc/articles/PMC8659210/ /pubmed/34883635 http://dx.doi.org/10.3390/polym13234132 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Amza, Catalin Gheorghe Zapciu, Aurelian Baciu, Florin Vasile, Mihai Ion Nicoara, Adrian Ionut Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers |
title | Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers |
title_full | Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers |
title_fullStr | Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers |
title_full_unstemmed | Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers |
title_short | Accelerated Aging Effect on Mechanical Properties of Common 3D-Printing Polymers |
title_sort | accelerated aging effect on mechanical properties of common 3d-printing polymers |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8659210/ https://www.ncbi.nlm.nih.gov/pubmed/34883635 http://dx.doi.org/10.3390/polym13234132 |
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