Operability limits for non-Newtonian liquids in dual-layer slot coating processes using the viscocapillary model
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Jin Seok | - |
dc.contributor.author | Yoo, Taehyung | - |
dc.contributor.author | Chun, Byoungjin | - |
dc.contributor.author | Lee, Kwan-Young | - |
dc.contributor.author | Jung, Hyun Wook | - |
dc.date.accessioned | 2022-04-29T01:40:40Z | - |
dc.date.available | 2022-04-29T01:40:40Z | - |
dc.date.created | 2022-04-28 | - |
dc.date.issued | 2022-01 | - |
dc.identifier.issn | 1547-0091 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/140506 | - |
dc.description.abstract | The operability windows and coating bead dynamics for the dual-layer slot coating process with non-Newtonian coating liquids were investigated using the viscocapillary model, a two-dimensional (2D) CFD simulation, and experiments. The simplified viscocapillary model derived from the 2D equation of motion with the shear-thinning Carreau liquids bounds the uniform coating regime without defects such as leaking, bead break-up, and mid-gap invasion in dual-layer coating systems. The coating bead flows from experiments and finite-volume-based 2D simulations with the volume-of-fluid scheme demonstrate the performance of the viscocapillary model in reliably tracking the upstream meniscus position of the bottom layer in the coating bead region. The onset of leaking, bead break-up, and mid-gap invasion defects is strongly affected by the rheological properties of Carreau-type coating liquids and the flow ratio between the top and bottom layers. In particular, the relative thickness of the shear-thinning bottom layer at the onset of mid-gap invasion is smaller than the well-known 1/3 value in the Newtonian case, depending on the degree of shear thinning. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER | - |
dc.subject | OPERATING LIMITS | - |
dc.subject | FLOW | - |
dc.title | Operability limits for non-Newtonian liquids in dual-layer slot coating processes using the viscocapillary model | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Jung, Hyun Wook | - |
dc.identifier.doi | 10.1007/s11998-021-00499-5 | - |
dc.identifier.scopusid | 2-s2.0-85108189743 | - |
dc.identifier.wosid | 000663220600001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, v.19, no.1, pp.35 - 47 | - |
dc.relation.isPartOf | JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH | - |
dc.citation.title | JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH | - |
dc.citation.volume | 19 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 35 | - |
dc.citation.endPage | 47 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Applied | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.subject.keywordPlus | OPERATING LIMITS | - |
dc.subject.keywordPlus | FLOW | - |
dc.subject.keywordAuthor | Dual-layer slot coating | - |
dc.subject.keywordAuthor | Shear-thinning | - |
dc.subject.keywordAuthor | Viscocapillary model | - |
dc.subject.keywordAuthor | Mid-gap invasion | - |
dc.subject.keywordAuthor | Operability limits | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.