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Effect of die exit stress state, Deborah number and extensional rheology on neck-in phenomenon

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dc.title Effect of die exit stress state, Deborah number and extensional rheology on neck-in phenomenon en
dc.contributor.author Zatloukal, Martin
dc.contributor.author Barbořík, Tomáš
dc.relation.ispartof Annual Technical Conference - ANTEC, Conference Proceedings
dc.date.issued 2018
utb.relation.volume 2018-May
dc.event.title 2018 Society of Plastics Engineers Annual Technical Conference, ANTEC 2018
dc.event.location Orlando, FL
utb.event.state-en United States
utb.event.state-cs Spojené státy americké
dc.event.sdate 2018-05-07
dc.event.edate 2018-05-10
dc.type conferenceObject
dc.language.iso en
dc.publisher Society of Plastics Engineers
dc.description.abstract In this work, effect of the second to first normal stress difference ratio at the die exit, uniaxial extensional strain hardening, planar-to-uniaxial extensional viscosity ratio and Deborah number has been investigated via viscoelastic isothermal modeling utilizing 1D membrane model and a single-mode modified Leonov model as the constitutive equation. Numerical solutions of the utilized model were successfully approximated by a dimensionless analytical equation relating the normalized maximum attainable neck-in with all above mentioned variables. Suggested equation was tested by using literature experimental data. It was found that approximate model predictions are in a very good agreement with the corresponding experimental data for low as well as very high Deborah numbers. It is believed that the obtained knowledge together with the suggested simple analytical model can be used for optimization of the extrusion die design, molecular architecture of polymer melts and processing conditions to suppress neck-in phenomenon in production of very thin polymeric flat films. © 2018 Society of Plastics Engineers. All rights reserved. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1009222
utb.identifier.obdid 43879118
utb.identifier.scopus 2-s2.0-85072971682
utb.identifier.coden ACPED
utb.source d-scopus
dc.date.accessioned 2019-11-20T10:30:30Z
dc.date.available 2019-11-20T10:30:30Z
utb.contributor.internalauthor Zatloukal, Martin
utb.contributor.internalauthor Barbořík, Tomáš
utb.fulltext.sponsorship The authors wish to acknowledge Grant Agency of the Czech Republic (Grant registration No. 16-05886S, Title: Investigation the effect of polymer melt shear and elongational rheology on production stability of meltblown nanofibers and films) for the financial support.
utb.scopus.affiliation Polymer Centre, Faculty of Technology, Tomas Bata University in Zlin, Vavreckova 275, Zlin, 760 01, Czech Republic
utb.fulltext.projects 16-05886S
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