Fabrication and upscaling of spinning process for ceramic high-tech fiber production / Dietmar Hietel in CHEMICAL FIBERS INTERNATIONAL, Vol. 63, N° 1 (03/2013)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > Vol. 63, N° 1 (03/2013) . - p. 42-44 Titre : Fabrication and upscaling of spinning process for ceramic high-tech fiber production Type de document : texte imprimé Auteurs : Dietmar Hietel, Auteur ; Andreas Nöth, Auteur ; Michael Rothmann, Auteur Année de publication : 2013 Article en page(s) : p. 42-44 Langues : Anglais (eng) Catégories : Extrusion filage Fibres céramiques Filature Procédés de fabrication Index. décimale : 677.5 Autres textiles Résumé : Ceramic fibers for high-tech applications require intensive developments concerning precursor synthesis and fiber spinning. The spinning process starts and laboratory scale with only few filaments and needs to be upscaled to pilot and industrial scale with hundreds or even thousands of filaments. Due to the significant interaction of filaments and surrounding inert atmosphere, the behavior in the spinning tower completely changes with high numbers of filaments. How these effects are incorporated in a model of the gas flow including its influence by the filament spinning will be described. In 2 examples for melt and dry spinning of ceramic fibers it will be demonstrated how characteristic properties derived from experiments on a laboratory scale can be efficiently transferred to a pilot plant scale by use of simulations. For both applications the spinning tower was built according to the conditions derived from the simulation results, and experimentally proven to work. Note de contenu : - Requirements for the fiber spinnig processes - Modeling and simulations En ligne : https://drive.google.com/file/d/1UPIe7btREl-t4uBOlHrsjpkYU-SfghSe/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18305 [article]

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Fabrication and upscaling of spinning processes for ceramic high-tech fiber production / Dietmar Hietel in CHEMICAL FIBERS INTERNATIONAL, (10/2013)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > (10/2013) . - p. 55-57 Titre : Fabrication and upscaling of spinning processes for ceramic high-tech fiber production Type de document : texte imprimé Auteurs : Dietmar Hietel, Auteur ; Andreas Nöth, Auteur ; Michael Rothmann, Auteur Année de publication : 2013 Article en page(s) : p. 55-57 Langues : Anglais (eng) Catégories : Fibres céramiques Filature Filature -- Appareils et matériels Modélisation tridimensionnelle Simulation par ordinateur Index. décimale : 677.4 Textiles artificiels Résumé : Ceramic fibers for high-tech applications require intensive developments concerning precursor synthesis and fiber spinning. The spinning process starts at laboratory scale with only few filaments and needs to be upscaled to pilot plant and industrial scale with hundreds or even thousands of fila-ments. Due to the significant interaction of filaments and surrounding inert atmosphere, the behavior in the spinning tower completely changes with higher numbers of filaments. How these effects are incorporated in a model of the gas flow including its influence by the filament spinning will be de-scribed. In 2 examples for melt- and dry-spinning of ceramic fibers it will be demonstrated how characteristic properties derived from experiments on a laboratory scale can be efficiently transferred to a pilot plant scale by use of simulations. For both applications the spinning tower was built according to the conditions derived from the simulation results, and experimentally proven to work. Note de contenu : - Requirements for the fiber spinning processes - Modeling and simulations - Results and applications - Fig. 1 : Spinning tower for melt-spinning process with angular shape (left) and dry-spinning with rectangular shape (right) - black arrows indicate gas inlets and outlets - Fig. 2 : Streamlines of optimized ring flange (symmetric half) and rectangular flange with holes at the long sides - Fig. 3 : Siulated gas flow under influence of spinning process with curing gas concentration in melt-spinning and solvent concentration in dry-spinning - Fig. 4 : Realization of melt-spinning process and produced ceramic high-tech fibers En ligne : https://drive.google.com/file/d/10FDKWP9dgRkSLnMuQWE--5Av4oHRxaeV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19771 [article]

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