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Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication

This study purposed to develop conductivity 3D printed (3DP) fingertips and confirm their potential for use in a pressure sensor. Index fingertips were 3D printed using thermoplastic polyurethane filament with three types of infill patterns (Zigzag (ZG), Triangles (TR), Honeycomb (HN)) and densities...

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Detalles Bibliográficos
Autores principales: Kai, Zhao, Jung, Imjoo, Lee, Sunhee
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10057525/
https://www.ncbi.nlm.nih.gov/pubmed/36987207
http://dx.doi.org/10.3390/polym15061426
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author Kai, Zhao
Jung, Imjoo
Lee, Sunhee
author_facet Kai, Zhao
Jung, Imjoo
Lee, Sunhee
author_sort Kai, Zhao
collection PubMed
description This study purposed to develop conductivity 3D printed (3DP) fingertips and confirm their potential for use in a pressure sensor. Index fingertips were 3D printed using thermoplastic polyurethane filament with three types of infill patterns (Zigzag (ZG), Triangles (TR), Honeycomb (HN)) and densities (20%, 50%, 80%). Hence, the 3DP index fingertip was dip-coated with 8 wt% graphene/waterborne polyurethane composite solution. The coated 3DP index fingertips were analyzed by appearance property, weight changes, compressive property, and electrical property. As results, the weight increased from 1.8 g to 2.9 g as infill density increased. By infill pattern, ZG was the largest, and the pick-up rate decreased from 18.9% for 20% infill density to 4.5% for 80% infill density. Compressive properties were confirmed. Compressive strength increased as infill density increased. In addition, the compressive strength after coating was improved more than 1000 times. Especially, TR had excellent compressive toughness as 13.9 J for 20%, 17.2 J for 50%, and 27.9 J for 80%. In the case of electrical properties, the current become excellent at 20% infill density. By infill patterns at 20% infill density, TR has 0.22 mA as the best conductivity. Therefore, we confirmed the conductivity of 3DP fingertips, and the infill pattern of TR at 20% was most suitable.
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spelling pubmed-100575252023-03-30 Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication Kai, Zhao Jung, Imjoo Lee, Sunhee Polymers (Basel) Article This study purposed to develop conductivity 3D printed (3DP) fingertips and confirm their potential for use in a pressure sensor. Index fingertips were 3D printed using thermoplastic polyurethane filament with three types of infill patterns (Zigzag (ZG), Triangles (TR), Honeycomb (HN)) and densities (20%, 50%, 80%). Hence, the 3DP index fingertip was dip-coated with 8 wt% graphene/waterborne polyurethane composite solution. The coated 3DP index fingertips were analyzed by appearance property, weight changes, compressive property, and electrical property. As results, the weight increased from 1.8 g to 2.9 g as infill density increased. By infill pattern, ZG was the largest, and the pick-up rate decreased from 18.9% for 20% infill density to 4.5% for 80% infill density. Compressive properties were confirmed. Compressive strength increased as infill density increased. In addition, the compressive strength after coating was improved more than 1000 times. Especially, TR had excellent compressive toughness as 13.9 J for 20%, 17.2 J for 50%, and 27.9 J for 80%. In the case of electrical properties, the current become excellent at 20% infill density. By infill patterns at 20% infill density, TR has 0.22 mA as the best conductivity. Therefore, we confirmed the conductivity of 3DP fingertips, and the infill pattern of TR at 20% was most suitable. MDPI 2023-03-13 /pmc/articles/PMC10057525/ /pubmed/36987207 http://dx.doi.org/10.3390/polym15061426 Text en © 2023 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
Kai, Zhao
Jung, Imjoo
Lee, Sunhee
Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication
title Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication
title_full Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication
title_fullStr Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication
title_full_unstemmed Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication
title_short Characterization of Conductive 3D Printed Fingertips Manufactured by Fused Filament Fabrication
title_sort characterization of conductive 3d printed fingertips manufactured by fused filament fabrication
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10057525/
https://www.ncbi.nlm.nih.gov/pubmed/36987207
http://dx.doi.org/10.3390/polym15061426
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