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Ouvrages de la bibliothèque en indexation 668.9
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The mapping method for mixing optimization / P. G. M. Kruijt in INTERNATIONAL POLYMER PROCESSING, Vol. XVI, N° 2 (06/2001)
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Titre : The mapping method for mixing optimization : Part II : Transport in a cororating twin screw extruder Type de document : texte imprimé Auteurs : P. G. M. Kruijt, Auteur ; O. S. Galaktionov, Auteur ; G. W. M. Peters, Auteur ; Han E. H. Meijer, Auteur Année de publication : 2001 Article en page(s) : p. 161-171 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : The application of the mapping method [1, 2] on fully three dimensional flows with dynamic boundaries is presented. The computational domain is a (three dimensional) section of a particular type of screw element in a closely intermeshing corotating twin screw extruder. Screw elements include transport, different kneading, and counterconveying zones, for each of which a mapping matrix has to be constructed.
In the future, different screw assemblies could be studied by combining distinct mapping matrices, much like an actual screw is assembled from distinct modules. In this paper, the principle and applicability of the mapping method is demonstrated by the analysis of a fully filled transporting section of the corotating twin screw extruder. Concentration and residence time distribution can be computed straightforwardly and the volume average intensity of segregation is chosen as a characteristic mixing measure to quantitatively describe distributive mixing.DOI : 10.3139/217.1637 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15896
in INTERNATIONAL POLYMER PROCESSING > Vol. XVI, N° 2 (06/2001) . - p. 161-171[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001016 - Périodique Bibliothèque principale Documentaires Disponible The matching of experimental polymer processing flows to viscoelastic vumerical simulation / Jean-François Agassant in INTERNATIONAL POLYMER PROCESSING, Vol. XVII, N° 1 (03/2002)
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Titre : The matching of experimental polymer processing flows to viscoelastic vumerical simulation Type de document : texte imprimé Auteurs : Jean-François Agassant, Auteur ; F. Baaijens, Auteur ; A. Bernnat, Auteur ; A. C. B. Bogaerds, Auteur ; T. Coupez, Auteur ; B. Debbaut, Auteur ; A. L. Gavrus, Auteur ; A. Goublomme, Auteur ; M. van Gurp, Auteur ; R. J. Koopmans, Auteur ; H. M. Laun, Auteur ; K. Lee, Auteur ; O. H. Nouatin, Auteur ; M. R. Mackley, Auteur ; G. W. M. Peters, Auteur ; G. Rekers, Auteur ; W. M. H. Verbeeten, Auteur ; Bruno Vergnes, Auteur ; M. H. Wagner, Auteur ; E. Wassner, Auteur ; W. F. Zoetelief, Auteur ; H. Bastian, Auteur Année de publication : 2002 Article en page(s) : p. 3-10 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : This paper describes work carried out in order to match experimental processing flows to numerical simulations. The work has brought together a consortium that has developed reliable experimental methods by which processing flows can be achieved in the laboratory and then ranked against numerical simulation.
A full rheological characterisation of a selected range of polymers was made and the results compared from different laboratories. The data was fitted to a number of rheological models. Multi-mode parameter fitting was universal for the linear viscoelastic response. Particular attention was paid to the non linear response of the material. Prototype industrial flow experiments were carried out for a number of geometries in different laboratories and the flow birefringence technique was used to map out the experimentally observed stress fields for different polymers in a range of complex flows that contained both extensional and shear flow components. Numerical simulation was carried out using a number of algorithms and a range of constitutive equations.
In order to make a quantitative comparison between experiment and simulation, an Advanced Rheological Tool (ART) module was developed that was able in some cases to quantify the level of fit between the numerically predicted and the experimentally observed stress patterns. In addition the ART module was able to optimise certain non-linear parameters in order to improve the quality of fit between experiment and simulation.Note de contenu : - Rheological characterisation and choice of constitutive equation
- Prototype industrial flows (PIF)
- Numerical simulation
- The ART module
- Conclusions and future perspectivesDOI : 10.3139/217.1675 En ligne : https://drive.google.com/file/d/1-xYcLm5cmWTCdrcTRx-sugAgOaEiZqnR/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15955
in INTERNATIONAL POLYMER PROCESSING > Vol. XVII, N° 1 (03/2002) . - p. 3-10[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001019 - Périodique Bibliothèque principale Documentaires Disponible The mechanical properties of plasticized PVC processed in an extruder with a modified feed zone / Janusz W. Sikora in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 3 (07/2015)
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Titre : The mechanical properties of plasticized PVC processed in an extruder with a modified feed zone Type de document : texte imprimé Auteurs : Janusz W. Sikora, Auteur ; B. Samujlo, Auteur ; A. Stasiek, Auteur ; A. Tor-Swiatek, Auteur Année de publication : 2015 Article en page(s) : p. 359-365 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chlorure de polyvinyle
Extrudeuse monovis
Matières plastiques -- Extrusion:Polymères -- Extrusion
Matières plastiques -- Propriétés mécaniques
PlastifiantsIndex. décimale : 668.9 Polymères Résumé : The work presents the results of experimental studies of selected mechanical properties of plasticized poly(vinyl chloride) extruded by a single-screw extruder with a modified feed section. The variable factors were: feed opening width, feed pocket depth in the extruder barrel and the rotational speed of the screw. The following parameters were studied: yield strength ReH (MPa), tensile strength Rm (MPa), percentage total extension at maximum force ?m (%), Shore hardness H (°ShA). It was found that the increase in the depth of the pocket and the decrease in the width of the feed opening in the studied range increase mechanical properties (besides percentage total extension at maximum force). It was determined that the increase of the screw speed and the simultaneous displacement of both the axis and edge of the feed opening in relation to the plasticizing system axis towards the direction of revolutions of the screw is favorable. DOI : 10.3139/217.3040 En ligne : https://drive.google.com/file/d/18wkwsFGgdV7X8lI-dXqTcJ2orsvgbLFO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24331
in INTERNATIONAL POLYMER PROCESSING > Vol. XXX, N° 3 (07/2015) . - p. 359-365[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17309 - Périodique Bibliothèque principale Documentaires Disponible The mechanism of neck-in phenomenon in film casting process / Seiji Shiromoto in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 2 (05/2014)
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Titre : The mechanism of neck-in phenomenon in film casting process Type de document : texte imprimé Auteurs : Seiji Shiromoto, Auteur Année de publication : 2014 Article en page(s) : p. 197-206 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Effet de striction (physique)
Polyéthylène basse densité
Simulation par ordinateur
Viscoélasticité
ViscositéIndex. décimale : 668.9 Polymères Résumé : In this study, the non-isothermal viscoelastic simulation of the film casting process was carried out. Low-density polyethylene polymerized by a high-pressure process (LDPE) was used for the simulation. The LDPE exhibited strain hardening in elongational viscosity since it has long chain branching. The Phan-Thien/Tanner model, as a constitutive equation of the viscoelastic fluid, and temperature dependence of the Arrhenius law were employed for the simulation to investigate the effect of viscoelasticity on extrusion drawing, so-called neck-in phenomenon. We developed the theoretical model on the basis of deformation type and force balance of a film to recognize the mechanism of the neck-in phenomenon. It was confirmed from a combination of the simulation results and the theoretical model that neck-in was determined by the ratio of planar to uniaxial elongational viscosity rather than the strain hardening nature of a uniaxial elongational viscosity. Note de contenu : - NUMERICAL SIMULATION : Simulation method
- Processing conditions - Materials - Viscoelastic model - Viscous model - Temperature dependence
- NECK-IN MODEL
- RESULTS AND DISCUSSION : Verification of the neck-in model - The effect of viscoelasticity and process conditions on neck-in - The effect of viscosity on neck-inDOI : 10.3139/217.2784 En ligne : https://drive.google.com/file/d/1VDsHPRVFPLW1DsdihysfZ1JfMoTBjU2R/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21313
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 2 (05/2014) . - p. 197-206[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16222 - Périodique Bibliothèque principale Documentaires Disponible The "new-generation" co-flow intermeshing internal mixer / N. O. Nortey in INTERNATIONAL POLYMER PROCESSING, Vol. XVI, N° 2 (06/2001)
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Titre : The "new-generation" co-flow intermeshing internal mixer Type de document : texte imprimé Auteurs : N. O. Nortey, Auteur Année de publication : 2001 Article en page(s) : p. 87-99 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : The "new-generation" Coflow4TM intermeshing internal mixer uses less motor power peak and specific energy than all traditional intermeshing and tangential internal mixers. The Coflow4TM mixer provides the following advantages: better quality, 20 % to 45 % increase in productivity depending on your rotor length-to-diameter ratio, improved heat transfer, over 50 % reduction in dust-stop leaks, better for one-pass or multiple-pass mixing, wide range of process materials, better wear life, retrofit capabilities and lower mixer cost. It is more cost effective to retrofit your traditional mixer with a Coflow4TM mixer when your chamber bores and rotors are worn out, and you are ready for a rebuild rather than investing into the same old mixing technologies that yield small return. Owing to the optimal constant rotor length-to-diameter ratio and the superior mixing capabilities of the co-flow mixing technology, it will be beneficial to try and use the Coflow4TM mixer to compound the materials, which could not be compounded before by the old traditional mixing technologies or the two-roll mills. Note de contenu : - Mixers
- Compounding
- Mixing analysis
- Concise mixing study
- Viscosity reduction and dispersionDOI : 10.3139/217.1638 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15888
in INTERNATIONAL POLYMER PROCESSING > Vol. XVI, N° 2 (06/2001) . - p. 87-99[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001016 - Périodique Bibliothèque principale Documentaires Disponible The prediction of sharkskin instability observed during film blowing / R. P. G. Rutgers in INTERNATIONAL POLYMER PROCESSING, Vol. XVII, N° 3 (09/2002)
PermalinkThe pressure-volume-temperature behavior polyethylene melts / L. Capt in INTERNATIONAL POLYMER PROCESSING, Vol. XV, N° 1 (03/2000)
PermalinkThe processing behavior of liquid Sn/molten polyethylene during internal mixing / G. Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 2 (05/2014)
PermalinkThe reactive extrusion of thermoplastic polyurethane and the effect of the depolymerization reaction / V. W. A. Verhoeven in INTERNATIONAL POLYMER PROCESSING, Vol. XXI, N° 3 (07/2006)
PermalinkThe research for asphalt modified with phosphorus trichloride/SBS / F. Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. XXIV, N° 2 (05/2009)
PermalinkThe rheological and mechanical properties of PVC-lignin blends / F. Liu in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 1 (03/2012)
PermalinkThe role of organoclay on in-situ microfibril formation of epoxy in poly(butylene terephtalate) nanocomposites / M. M. Salehi in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 2 (05/2013)
PermalinkThe role of tool/sheet contact in plug-assisted thermoforming / P. Collins in INTERNATIONAL POLYMER PROCESSING, Vol. XVII, N° 4 (12/2002)
PermalinkThe use of apparent yield stress to characterize exfoliation in polymer nanocomposites / Bruno Vergnes in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 2 (05/2011)
PermalinkThe versatility of ambient curing waterborne epoxy resin systems I / Adrian Thomas in SURFACE COATINGS INTERNATIONAL, Vol. 99.3 (06-07/2016)
PermalinkThermal analysis of polymers / Joseph D. Menczel / Hoboken [USA] : John Wiley & Sons (2009)
PermalinkThermal and flexural properties and water absorption of caulis spatholobi residue fiber reinforced biodegradable poly(propylene carbonate) composites / W. Li in INTERNATIONAL POLYMER PROCESSING, Vol. XXX, N° 3 (07/2015)
PermalinkThermal and tensile behavior of HD-PE films containing iron (III) acetylacetonate after UV irradiation / D. Kiryakova in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 5 (11/2014)
PermalinkThermal conductivity of polypropylene composites with combined boron nitride fillers / W. Cheewawuttipong in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 2 (05/2014)
PermalinkThermal degradation of meta and para-aramid fibers in different atmospheres / X.-W. Wang in INTERNATIONAL POLYMER PROCESSING, Vol. XXIII, N° 1 (03/2008)
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