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Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel
Coatings, Volume: 13, Issue: 6, Start page: 982
Swansea University Authors: Evan Watkins , Chris Griffiths, Chris Batchelor, Matt Carnie
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DOI (Published version): 10.3390/coatings13060982
Abstract
Clearcoats provide long-term aesthetics and protection for underlying coating systems, increasing product lifetimes. However, organic clearcoats are predominantly produced using fossil-fuel feedstocks. In search of a sustainable alternative, an experimental investigation was conducted on the develop...
Published in: | Coatings |
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ISSN: | 2079-6412 |
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MDPI AG
2023
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URI: | https://cronfa.swan.ac.uk/Record/cronfa63543 |
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However, organic clearcoats are predominantly produced using fossil-fuel feedstocks. In search of a sustainable alternative, an experimental investigation was conducted on the development of glass-like clearcoats produced using the sol-gel process. The processing of sol-gel clearcoats over a pigmented polyurethane coating was studied by modifying the sol-gel solution pH, aging, curing, precursor chemistry, and deposition techniques. Under optimal formulation and processing conditions, defect-free sol-gel clearcoats were produced that have potential to be scaled up to a coil-coating line using existing technologies. Mechanical testing demonstrated the coatings had excellent adhesion, hardness, and flexibility. Furthermore, accelerated laboratory weathering tests revealed the sol-gel coatings had superior degradation resistance compared to the organic coatings tested, resulting in negligible colour changes and higher gloss retention after 4000 hours of exposure. 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v2 63543 2023-05-30 Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel ac8763e21b39071c449e017bcb8e2299 0009-0000-5202-2357 Evan Watkins Evan Watkins true false 6ec8aad26102e4a1c7b00c1832471424 Chris Griffiths Chris Griffiths true false dc25fd16f433418f99e6f6b27d8a5b02 Chris Batchelor Chris Batchelor true false 73b367694366a646b90bb15db32bb8c0 0000-0002-4232-1967 Matt Carnie Matt Carnie true false 2023-05-30 Clearcoats provide long-term aesthetics and protection for underlying coating systems, increasing product lifetimes. However, organic clearcoats are predominantly produced using fossil-fuel feedstocks. In search of a sustainable alternative, an experimental investigation was conducted on the development of glass-like clearcoats produced using the sol-gel process. The processing of sol-gel clearcoats over a pigmented polyurethane coating was studied by modifying the sol-gel solution pH, aging, curing, precursor chemistry, and deposition techniques. Under optimal formulation and processing conditions, defect-free sol-gel clearcoats were produced that have potential to be scaled up to a coil-coating line using existing technologies. Mechanical testing demonstrated the coatings had excellent adhesion, hardness, and flexibility. Furthermore, accelerated laboratory weathering tests revealed the sol-gel coatings had superior degradation resistance compared to the organic coatings tested, resulting in negligible colour changes and higher gloss retention after 4000 hours of exposure. The durability and environmental benefits of sol-gel clearcoats highlight their potential as a replacement for traditional organic clearcoats in a variety of applications. Journal Article Coatings 13 6 982 MDPI AG 2079-6412 Glass clearcoats, sol-gel process, organic-inorganic hybrids, weathering, degradation, 24 coil-coating, sustainability 25 5 2023 2023-05-25 10.3390/coatings13060982 http://dx.doi.org/10.3390/coatings13060982 COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) The authors would like to acknowledge the COATED M2A funding from the European 532 Social Fund via the Welsh Government (c80816), the Engineering and Physical Sciences Research 533 Council (Grant Ref: EP/S02252X/1) and Tata Steel UK that has made this research possible. 2023-06-13T14:24:27.7504678 2023-05-30T08:35:21.1591043 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Evan Watkins 0009-0000-5202-2357 1 Chris Griffiths 2 Chris Batchelor 3 Peter Barker 4 Matt Carnie 0000-0002-4232-1967 5 63543__27695__7858fe3ddb654e3d9569f7a51c12cca2.pdf 63543.VOR.pdf 2023-06-03T11:12:58.2356118 Output 4451579 application/pdf Version of Record true © 2023 by the authors. This 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 |
Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel |
spellingShingle |
Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel Evan Watkins Chris Griffiths Chris Batchelor Matt Carnie |
title_short |
Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel |
title_full |
Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel |
title_fullStr |
Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel |
title_full_unstemmed |
Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel |
title_sort |
Processing and Weathering of Sol-Gel Clearcoats for Coil-Coated Steel |
author_id_str_mv |
ac8763e21b39071c449e017bcb8e2299 6ec8aad26102e4a1c7b00c1832471424 dc25fd16f433418f99e6f6b27d8a5b02 73b367694366a646b90bb15db32bb8c0 |
author_id_fullname_str_mv |
ac8763e21b39071c449e017bcb8e2299_***_Evan Watkins 6ec8aad26102e4a1c7b00c1832471424_***_Chris Griffiths dc25fd16f433418f99e6f6b27d8a5b02_***_Chris Batchelor 73b367694366a646b90bb15db32bb8c0_***_Matt Carnie |
author |
Evan Watkins Chris Griffiths Chris Batchelor Matt Carnie |
author2 |
Evan Watkins Chris Griffiths Chris Batchelor Peter Barker Matt Carnie |
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Coatings |
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982 |
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2023 |
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2079-6412 |
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10.3390/coatings13060982 |
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MDPI AG |
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Faculty of Science and Engineering |
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description |
Clearcoats provide long-term aesthetics and protection for underlying coating systems, increasing product lifetimes. However, organic clearcoats are predominantly produced using fossil-fuel feedstocks. In search of a sustainable alternative, an experimental investigation was conducted on the development of glass-like clearcoats produced using the sol-gel process. The processing of sol-gel clearcoats over a pigmented polyurethane coating was studied by modifying the sol-gel solution pH, aging, curing, precursor chemistry, and deposition techniques. Under optimal formulation and processing conditions, defect-free sol-gel clearcoats were produced that have potential to be scaled up to a coil-coating line using existing technologies. Mechanical testing demonstrated the coatings had excellent adhesion, hardness, and flexibility. Furthermore, accelerated laboratory weathering tests revealed the sol-gel coatings had superior degradation resistance compared to the organic coatings tested, resulting in negligible colour changes and higher gloss retention after 4000 hours of exposure. The durability and environmental benefits of sol-gel clearcoats highlight their potential as a replacement for traditional organic clearcoats in a variety of applications. |
published_date |
2023-05-25T14:24:26Z |
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1768593992142815232 |
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11.01628 |