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Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins
Lithography-based additive manufacturing was introduced in the 1980s, and is still the method of choice for printing accurate plastic parts with high surface quality. Recent progress in this field has made tough photopolymer resins and cheap LED light engines available. This study presents the influ...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5744380/ https://www.ncbi.nlm.nih.gov/pubmed/29257107 http://dx.doi.org/10.3390/ma10121445 |
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author | Steyrer, Bernhard Neubauer, Philipp Liska, Robert Stampfl, Jürgen |
author_facet | Steyrer, Bernhard Neubauer, Philipp Liska, Robert Stampfl, Jürgen |
author_sort | Steyrer, Bernhard |
collection | PubMed |
description | Lithography-based additive manufacturing was introduced in the 1980s, and is still the method of choice for printing accurate plastic parts with high surface quality. Recent progress in this field has made tough photopolymer resins and cheap LED light engines available. This study presents the influence of photoinitiator selection and post-processing on the thermomechanical properties of various tough photopolymers. The influence of three photoinitiators (Ivocerin, BAPO, and TPO-L) on the double-bond conversion and mechanical properties was investigated by mid infrared spectroscopy, dynamic mechanical analysis and tensile tests. It was found that 1.18 wt % TPO-L would provide the best overall results in terms of double-bond conversion and mechanical properties. A correlation between double-bond conversion, yield strength, and glass transition temperature was found. Elongation at break remained high after post-curing at about 80–100%, and was not influenced by higher photoinitiator concentration. Finally, functional parts with 41 MPa tensile strength, 82% elongation at break, and 112 °C glass transition temperature were printed on a 405 nm DLP (digital light processing) printer. |
format | Online Article Text |
id | pubmed-5744380 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-57443802017-12-31 Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins Steyrer, Bernhard Neubauer, Philipp Liska, Robert Stampfl, Jürgen Materials (Basel) Article Lithography-based additive manufacturing was introduced in the 1980s, and is still the method of choice for printing accurate plastic parts with high surface quality. Recent progress in this field has made tough photopolymer resins and cheap LED light engines available. This study presents the influence of photoinitiator selection and post-processing on the thermomechanical properties of various tough photopolymers. The influence of three photoinitiators (Ivocerin, BAPO, and TPO-L) on the double-bond conversion and mechanical properties was investigated by mid infrared spectroscopy, dynamic mechanical analysis and tensile tests. It was found that 1.18 wt % TPO-L would provide the best overall results in terms of double-bond conversion and mechanical properties. A correlation between double-bond conversion, yield strength, and glass transition temperature was found. Elongation at break remained high after post-curing at about 80–100%, and was not influenced by higher photoinitiator concentration. Finally, functional parts with 41 MPa tensile strength, 82% elongation at break, and 112 °C glass transition temperature were printed on a 405 nm DLP (digital light processing) printer. MDPI 2017-12-19 /pmc/articles/PMC5744380/ /pubmed/29257107 http://dx.doi.org/10.3390/ma10121445 Text en © 2017 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Steyrer, Bernhard Neubauer, Philipp Liska, Robert Stampfl, Jürgen Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins |
title | Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins |
title_full | Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins |
title_fullStr | Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins |
title_full_unstemmed | Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins |
title_short | Visible Light Photoinitiator for 3D-Printing of Tough Methacrylate Resins |
title_sort | visible light photoinitiator for 3d-printing of tough methacrylate resins |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5744380/ https://www.ncbi.nlm.nih.gov/pubmed/29257107 http://dx.doi.org/10.3390/ma10121445 |
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