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A composite model for melting, pressure and fill factor profiles in a metered fed closely intermeshing counter-rotating twin screw extruder / Krzysztof J. Wilczynski in INTERNATIONAL POLYMER PROCESSING, Vol. XXII, N° 2 (05/2007)
[article]
Titre : A composite model for melting, pressure and fill factor profiles in a metered fed closely intermeshing counter-rotating twin screw extruder Type de document : texte imprimé Auteurs : Krzysztof J. Wilczynski, Auteur ; J. L. White, Auteur ; Q. Jiang, Auteur Année de publication : 2007 Article en page(s) : p. 198-203 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : A composite model of solids conveying, melting and melt flow in a closely intermeshing counter-rotating twin-screw extruder of modular design has been developed. This is based on combining melt conveying models with new melting and solids conveying models. Computations are made for axial fill factor, pressure, temperature and melting profiles. The results are compared with experiment. DOI : 10.3139/217.2001 En ligne : https://drive.google.com/file/d/1Nxbk6ZW8XoD5gnGLzjnohS43WynNXpJ4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2760
in INTERNATIONAL POLYMER PROCESSING > Vol. XXII, N° 2 (05/2007) . - p. 198-203[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007141 - Périodique Bibliothèque principale Documentaires Disponible Experimental studies on screw characteristics in closely intermeshing counter-rotating twin screw extruder / M.-H. Hong in INTERNATIONAL POLYMER PROCESSING, Vol. XXIII, N° 1 (03/2008)
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Titre : Experimental studies on screw characteristics in closely intermeshing counter-rotating twin screw extruder Type de document : texte imprimé Auteurs : M.-H. Hong, Auteur ; Q. Jiang, Auteur ; J. L. White, Auteur Année de publication : 2008 Article en page(s) : p. 88-92 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 668.9 Polymères Résumé : Experimental Studies on Screw Characteristics in Closely Intermeshing Counter-rotating Twin Screw Extruder DOI : 10.3139/217.2049 En ligne : https://drive.google.com/file/d/1gceJ67CNLhTKJAt-yA1OYiPB4SpN6Gk-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2665
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIII, N° 1 (03/2008) . - p. 88-92[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 009860 - Périodique Bibliothèque principale Documentaires Disponible A global model for closely intermeshing counter-rotating twin screw extruders with flood feeding / Q. Jiang in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 3 (07/2010)
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Titre : A global model for closely intermeshing counter-rotating twin screw extruders with flood feeding Type de document : texte imprimé Auteurs : Q. Jiang, Auteur ; J. L. White, Auteur ; J. Yang, Auteur Année de publication : 2010 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chlorure de polyvinyle
Extrudeuse bi-vis
Matières plastiques -- Extrusion
Polyéthylène haute densitéTags : 'Chlorure de polyvinyle' 'Polyéthylène haute densité' Extrusion 'Extrusion bi-vis' 'Variation axiale' 'Calcul pression' température' 'Profil fonte' 'Modèles expérimentaux' Simulation Index. décimale : 668.9 Polymères Résumé : A composite model has been developed to simulate the extrusion process for intermeshing counter-rotating twin-screw extruders. An experimentally based melting model, solids conveying model, and new improved metering model, were combined to develop this formulation. The procedure for global design of a flood feed intermeshing counter-rotating twin screw extruder is presented. Illustrative calculations are made for polyvinyl chloride and high density polyethylene in this type of machines with different screw designs. Computations are made for axial variation of the fill factor, pressure, temperature and melting profiles. Simulations were found to match with experimental results well. The model was also applied to scale-up. DOI : 10.3139/217.2333 En ligne : https://drive.google.com/file/d/1U4rY6hxRZw9bsb5Gok-XhlClKb_AayZj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9738
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Code-barres Cote Support Localisation Section Disponibilité 012302 - Périodique Bibliothèque principale Documentaires Disponible Structure development in the melt spinning of polypropylene/ethylene butene copolymer blends and birefringence suppression effect / J. Yang in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 5 (11/2010)
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Titre : Structure development in the melt spinning of polypropylene/ethylene butene copolymer blends and birefringence suppression effect Type de document : texte imprimé Auteurs : J. Yang, Auteur ; Q. Jiang, Auteur ; J. L. White, Auteur Année de publication : 2010 Article en page(s) : p. 346-355 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biréfringence La biréfringence est la propriété physique d'un matériau dans lequel la lumière se propage de façon anisotrope. Dans un milieu biréfringent, l'indice de réfraction n'est pas unique, il dépend de la direction de polarisation de l'onde lumineuse. (Wikipedia)
Copolymère polypropylène-éthylène-butène
Diffraction des rayons X Ã grand angle
Extrusion filageIndex. décimale : 668.9 Polymères Résumé : Polypropylene (PP)/ethylene butene copolymer (EBM) blends were melt-spun into fibers. The fiber orientation was determined by wide angle diffraction (WAXS) and birefringence. The birefringence of the blend fibers was much lower than that of the pure PP or EBM filaments spun at the same stresses. WAXS study showed that the PP phase had the same orientation versus stress relationship in its blends and in its pure state. However, EBM phase demonstrated much lower birefringence in its blends than in its pure state. The mechanism was explained as following. In melt spinning of the blends, the PP phase crystallized first. Before the PP phase crystallized, both PP and EBM phase had comparable modulus leading uniform stress distribution. After the PP phase crystallized, the modulus of PP phase became much larger than that of the EBM melt. Thus it would take most of the stress if it was the continuous phase leaving the EBM phase crystallizing at much lower stresses. This led to a large birefringence suppression of the EBM phase. In melt spinning of the blends with only 1 to 10 wt.% of PP, the dispersed PP phase could coalesce into a continuous surface layer. Thus small amount of PP could largely decrease the birefringence of EBM fibers. DOI : 10.3139/217.2320 En ligne : https://drive.google.com/file/d/17jwvlOVmh-X4cfD80WvtmqmJj3X5gtG4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10253
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Code-barres Cote Support Localisation Section Disponibilité 012592 - Périodique Bibliothèque principale Documentaires Disponible