Basalt fibers - glass fibers rich in iron oxide having enhanced Young's modulus / Theresa Förster in CHEMICAL FIBERS INTERNATIONAL, (09/2015)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > (09/2015) . - p. 53-55 Titre : Basalt fibers - glass fibers rich in iron oxide having enhanced Young's modulus Type de document : texte imprimé Auteurs : Theresa Förster, Auteur ; Rosemarie Plonka, Auteur ; Edith Mäder, Auteur ; Gert Heinrich, Auteur Année de publication : 2015 Article en page(s) : p. 53-55 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Elasticité Fibres courtes Fibres de basalte Fibres de basalte -- Propriétés mécaniques Fibres de verre Matériaux hybrides Oxyde de fer Polypropylène Préformes Objet constituant la majeur partie d’une pièce à fabriquer et qui nécessite un travail supplémentaire pour devenir une pièce finie. Ce terme s’utilise notamment pour le moulage, l’usinage, la taille d’outils en silex, la fabrication de fibre optique… Renforts textiles Traction (mécanique) Index. décimale : 677.4 Textiles artificiels Résumé : Currently, the interest in basalt fibers as reinforcement fibers is increasing. Continuous basalt fibers are manufactured out of basalt rocks. The properties of basalt fibers are similar or improved in comparison to the properties of glass fibers. Beside the high tensile strength and Young's modulus, the temperature and chemical resistance of basalt is emphasized. Furthermore, basalt is an inexpensive and extensively available raw material. Consequently, basalt fibers are considered as a new alternative reinforcement fiber. It is possible to feed basalt fiber rovings into extruders and manufacture short-fiber reinforced thermoplastics by injection molding. The Tailored Fiber Placement fabric as well as the basalt fiber/polypropylene (BF/PP) preform in the shape of a boomerang demonstrated that manifold textile application techniques are suitable for basalt fibers. Note de contenu : - Fiber manufacturing - Development challenges - Sizing En ligne : https://drive.google.com/file/d/1i5f8SgGEr480J1pFXDZvkdVe49SVnCwu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24719 [article]

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Study of distributive mixing in a journal bearing flow geometry / Mehdi Mostafaiyan in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 1 (2022)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 1 (2022) . - p. 70-82 Titre : Study of distributive mixing in a journal bearing flow geometry Type de document : texte imprimé Auteurs : Mehdi Mostafaiyan, Auteur ; Sven Wießner, Auteur ; Gert Heinrich, Auteur Année de publication : 2022 Article en page(s) : p. 70-82 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Eléments finis, Méthode des Fluides, Mécanique des Mélange Rhéofluidifiants Index. décimale : 668.4 Plastiques, vinyles Résumé : We implicitly assess the distributive mixing of generalized Newtonian fluids with shear-thinning behavior in a journal bearing flow geometry. For this purpose, we firstly develop a finite element code to calculate the flow field parameters. Our numerical algorithm splits the viscous stress tensor into arbitrary Newtonian stress and a source term, which grows gradually during the iterative solution. Therefore, we get a better converging solution than the Picard method, especially for highly shear-thinning fluids. Secondly, considering two inert fluids in the mixing domain, we employ a Lagrangian-Eulerian approach to predict the shape of the interface between two fluids. The results of our numerical analysis provide us the required information to evaluate three implicit mixing criteria: the concentration variance, the striation thickness, and the mean strain function. Then we conduct a parametric study to investigate the effects of different parameters (geometry and rheology) on the distributive mixing state. In addition, we discuss which mixing criteria provide a better evaluation for distributive mixing. Note de contenu : - THE FLOW PROBLEM AND THE SOLUTION METHOD : The flow field calculations - The two-phase flow problem - THE MIXING CRITERIA - RESULTS AND DISCUSSIONS : The effect of the shear-thinning behavior - The effect of the inner cylinder displacement - The effect of the inner rotating cylinder radius - Table 1 : The ranges of the involved parameters in the distributive mixing in the journal bearing flow DOI : https://doi.org/10.1515/ipp-2021-4145 En ligne : https://drive.google.com/file/d/14ggmb9_mGZauac-zPMKgUvaiNNeQq-x_/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38442 [article]

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