About: Influence of coextrusion die channel height on interfacial instability of low density polyethylene melt flow

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About: Influence of coextrusion die channel height on interfacial instability of low density polyethylene melt flow Goto Sponge Distinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The effect of side stream channel height on flow stability in 30u coextrusion geometries was investigated. The studies were conducted on a Dow LD150R low density polyethylene melt using a single extruder to feed a flow cell in which the delivered melt stream was split before, and rejoined after, a divider plate in a slit die. Wave type interfacial instability occurred at critical stream thickness ratios. Reducing the side stream channel height broadened the layer ratio operating range before the onset of interfacial instability, therefore improving process stability. Stress fields were quantified and used to validate principal stress differences of numerically modelled flow. Stress field features promoting interfacial instability in each of the die geometries were identified. Interfacial instability resulted when the stress gradient across the interface was asymmetric and accompanied by a non-monotonic decay in the stress along the interface from its inception. The effect of side stream channel height on flow stability in 30u coextrusion geometries was investigated. The studies were conducted on a Dow LD150R low density polyethylene melt using a single extruder to feed a flow cell in which the delivered melt stream was split before, and rejoined after, a divider plate in a slit die. Wave type interfacial instability occurred at critical stream thickness ratios. Reducing the side stream channel height broadened the layer ratio operating range before the onset of interfacial instability, therefore improving process stability. Stress fields were quantified and used to validate principal stress differences of numerically modelled flow. Stress field features promoting interfacial instability in each of the die geometries were identified. Interfacial instability resulted when the stress gradient across the interface was asymmetric and accompanied by a non-monotonic decay in the stress along the interface from its inception. (en)
Title	Influence of coextrusion die channel height on interfacial instability of low density polyethylene melt flow Influence of coextrusion die channel height on interfacial instability of low density polyethylene melt flow (en)
skos:prefLabel	Influence of coextrusion die channel height on interfacial instability of low density polyethylene melt flow Influence of coextrusion die channel height on interfacial instability of low density polyethylene melt flow (en)
skos:notation	RIV/70883521:28610/14:43871543!RIV15-MSM-28610___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED2.1.00/03.0111), P(GA103/09/2066)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Zatloukal, Martin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Tomáše Bati ve Zlíně / Univerzitní institut
http://linked.open...dnocenehoVysledku	21352
http://linked.open...ai/riv/idVysledku	RIV/70883521:28610/14:43871543
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Polyethylene; Modellin; Interfacial instabilities; Flow visualization; Coextrusion (en)
http://linked.open.../riv/klicoveSlovo	Polyethylene Interfacial instabilities Modellin Coextrusion Flow visualization
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[E9C72A16705E]
http://linked.open...i/riv/nazevZdroje	Plastic Rubber & Composites
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Analysis and development of constitutive equations for description of non-Newtonian fluids Centre of Polymer Systems
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	43
http://linked.open...iv/tvurceVysledku	Zatloukal, Martin Martyn, Mike T. Coates, P. D.
http://linked.open...ain/vavai/riv/wos	000337125300004
issn	1465-8011
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1179/1743289813Y.0000000065
http://localhost/t...ganizacniJednotka	28610

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