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The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing

Sarah-Jane Potts Orcid Logo, Christopher Phillips Orcid Logo, Tim Claypole Orcid Logo, Eifion Jewell Orcid Logo

Coatings, Volume: 10, Issue: 10, Start page: 1008

Swansea University Authors: Sarah-Jane Potts Orcid Logo, Christopher Phillips Orcid Logo, Tim Claypole Orcid Logo, Eifion Jewell Orcid Logo

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DOI (Published version): 10.3390/coatings10101008

Abstract

Screen-printable carbon-based inks are available in a range of carbon morphologies and concentrations, resulting in various rheological profiles. There are challenges in obtaining a good print when high loading and elasticity functional inks are used, with a trade-off often required between function...

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Published in: Coatings
ISSN: 2079-6412
Published: MDPI AG 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55510
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spelling 2021-12-01T14:08:15.9343460 v2 55510 2020-10-25 The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing 8c536622ba65fa1e04912d0e2ede88f7 0000-0003-0208-2364 Sarah-Jane Potts Sarah-Jane Potts true false cc734f776f10b3fb9b43816c9f617bb5 0000-0001-8011-710X Christopher Phillips Christopher Phillips true false 7735385522f1e68a8775b4f709e91d55 0000-0003-1393-9634 Tim Claypole Tim Claypole true false 13dc152c178d51abfe0634445b0acf07 0000-0002-6894-2251 Eifion Jewell Eifion Jewell true false 2020-10-25 MTLS Screen-printable carbon-based inks are available in a range of carbon morphologies and concentrations, resulting in various rheological profiles. There are challenges in obtaining a good print when high loading and elasticity functional inks are used, with a trade-off often required between functionality and printability. There is a limited understanding of how ink rheology influences the ink deposition mechanism during screen-printing, which then affects the print topography and therefore electrical performance. High speed imaging was used with a screen-printing simulation apparatus to investigate the effect of viscosity of a graphite and carbon-black ink at various levels of solvent dilution on the deposition mechanisms occurring during screen-printing. With little dilution, the greater relative volume of carbon in the ink resulted in a greater tendency towards elastic behavior than at higher dilutions. During the screen-printing process this led to the ink splitting into filaments while remaining in contact with both the mesh and substrate simultaneously over a greater horizonal length. The location of separating filaments corresponded with localized film thickness increases in the print, which led to a higher surface roughness (Sz). This method could be used to make appropriate adjustments to ink rheology to overcome print defects related to poor ink separation. Journal Article Coatings 10 10 1008 MDPI AG 2079-6412 carbon inks and pastes; screen printing; ink separation 1 9 2020 2020-09-01 10.3390/coatings10101008 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2021-12-01T14:08:15.9343460 2020-10-25T10:05:14.7711060 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Sarah-Jane Potts 0000-0003-0208-2364 1 Christopher Phillips 0000-0001-8011-710X 2 Tim Claypole 0000-0003-1393-9634 3 Eifion Jewell 0000-0002-6894-2251 4 55510__18560__a1fbd403aaaf4e74b535b9adc0bdd502.pdf 55510.pdf 2020-11-02T10:05:32.2859293 Output 5055824 application/pdf Version of Record true © 2020 by the authors.T his article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license true eng https://creativecommons.org/licenses/by/4.0/
title The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing
spellingShingle The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing
Sarah-Jane Potts
Christopher Phillips
Tim Claypole
Eifion Jewell
title_short The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing
title_full The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing
title_fullStr The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing
title_full_unstemmed The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing
title_sort The Effect of Carbon Ink Rheology on Ink Separation Mechanisms in Screen-Printing
author_id_str_mv 8c536622ba65fa1e04912d0e2ede88f7
cc734f776f10b3fb9b43816c9f617bb5
7735385522f1e68a8775b4f709e91d55
13dc152c178d51abfe0634445b0acf07
author_id_fullname_str_mv 8c536622ba65fa1e04912d0e2ede88f7_***_Sarah-Jane Potts
cc734f776f10b3fb9b43816c9f617bb5_***_Christopher Phillips
7735385522f1e68a8775b4f709e91d55_***_Tim Claypole
13dc152c178d51abfe0634445b0acf07_***_Eifion Jewell
author Sarah-Jane Potts
Christopher Phillips
Tim Claypole
Eifion Jewell
author2 Sarah-Jane Potts
Christopher Phillips
Tim Claypole
Eifion Jewell
format Journal article
container_title Coatings
container_volume 10
container_issue 10
container_start_page 1008
publishDate 2020
institution Swansea University
issn 2079-6412
doi_str_mv 10.3390/coatings10101008
publisher MDPI AG
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
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description Screen-printable carbon-based inks are available in a range of carbon morphologies and concentrations, resulting in various rheological profiles. There are challenges in obtaining a good print when high loading and elasticity functional inks are used, with a trade-off often required between functionality and printability. There is a limited understanding of how ink rheology influences the ink deposition mechanism during screen-printing, which then affects the print topography and therefore electrical performance. High speed imaging was used with a screen-printing simulation apparatus to investigate the effect of viscosity of a graphite and carbon-black ink at various levels of solvent dilution on the deposition mechanisms occurring during screen-printing. With little dilution, the greater relative volume of carbon in the ink resulted in a greater tendency towards elastic behavior than at higher dilutions. During the screen-printing process this led to the ink splitting into filaments while remaining in contact with both the mesh and substrate simultaneously over a greater horizonal length. The location of separating filaments corresponded with localized film thickness increases in the print, which led to a higher surface roughness (Sz). This method could be used to make appropriate adjustments to ink rheology to overcome print defects related to poor ink separation.
published_date 2020-09-01T04:09:46Z
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score 11.036531

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