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High temperature filament yarn / Martin Dauner in CHEMICAL FIBERS INTERNATIONAL, Vol. 65, N° 2 (06/2015)
[article]
Titre : High temperature filament yarn Type de document : texte imprimé Auteurs : Martin Dauner, Auteur ; Martin Hoss, Auteur ; Götz T. Gresser, Auteur Année de publication : 2015 Article en page(s) : p. 102-104 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère éthylène propylène fluoré
Fibres textiles -- Propriétés mécaniques
Fibres textiles -- Propriétés thermiques
Fibres textiles synthétiques
Polyéther éther cétone
Polyfluoroalkoxy
PolytétrafluoréthylèneIndex. décimale : 677.4 Textiles artificiels Résumé : Common fibers based on PET or PA 6.6 fail at temperatures above 200 °C and are prone to hydrolysis at hot gas filtration, e.g. easy to clean fibers with high strength and low creep are required for membrane architecture. Polymers such as PEEK and fluorinated thermoplasts (PFA, FEP, mPTFE) may fulfill these requirements, if required as bicomponent fibers. Yet thermoplasts with melting point above 300 °C are demanding towards the process of filament spinning: conventional spinning lines are not designed for T 300 °C; no cleaning polymer is available at material change ; spin finishes are fuming at the high drawing temperatures. The fluoropolymers are even more straining due to their aggressive monomers, which build hydrofluoric acid that requires equipment of Hastelloy or Inconel. Only now spin pumps are available. The presentation will enlighten these concerns and gives a picture of the current state-of-the-art. Note de contenu : - FIGURES : 1. Traces of corrosion on spin pumps ; left at the gears, right :damages of the protection layer with pitting corrosion - 2. Corrosion resistant spin pump of witte pumps - 3. Left melt fracture ; right : smooth filament yarns using optimized capillary geometries - 4. Tensile strentgh of FPA-multifilaments depending on winding speed ; ordinate left PFA as spun and PFA FDY in cN/tex ; ordinate right : PFA FDY in MPa - 5. Tensile strength of PFA/PEED-bico-multifilaments depending on the winding speed
- High temperature polymersEn ligne : https://drive.google.com/file/d/1WZkwt8IyeYXESfGZqYaU-axwqsAOXCRr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24266
in CHEMICAL FIBERS INTERNATIONAL > Vol. 65, N° 2 (06/2015) . - p. 102-104[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17257 - Périodique Bibliothèque principale Documentaires Disponible High-tenacity textile cellulose fibers from ionic liquid solutions / Michael Hummel in CHEMICAL FIBERS INTERNATIONAL, Vol. 65, N° 2 (06/2015)
[article]
Titre : High-tenacity textile cellulose fibers from ionic liquid solutions Type de document : texte imprimé Auteurs : Michael Hummel, Auteur ; Anne Michud, Auteur ; Shirin Asaadi, Auteur ; Yibo Ma, Auteur ; Herbert Sixta, Auteur ; Marjaana Tanttu, Auteur ; Eveliina Netti, Auteur Année de publication : 2015 Article en page(s) : p. 105-107 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Fibres cellulosiques
Fibres textiles -- Propriétés mécaniques
Fibres textiles synthétiques
Filature au mouilléProcédé dans lequel une solution de substance fibrogène est extrudée dans un milieu liquide de coagulation où le polymère est régénéré, comme dans la fabrication de la viscose ou de la rayonne cuproammoniacale.
Liquides ioniquesIndex. décimale : 677.46 Cellulosiques : rayonnes, acetates Résumé : A novel non-imidazolium based ionic liquid has been identified as very good cellulose solvent to spin fibers in a lyocell-type dry-jet wet spinning process. The spinning temperatures are markedly lower which reduces bath energy consumption and cellulose degradation. The resulting fibers showed high mechanical properties, exceeding those of currently commercially available man-made cellulosic textile fibers. Deriving from lyocell, the fibers have been called loncell-Ribers). Demonstrator garments and textile products have been produced to evaluate the potential of the new solvent-based process. In addition, a wide spectrum of cellulosic solutes could be dissolved, including low refined cellulose pulp and waste material. This could open up new opportunities in waste recycling strategies and sustainable resource management Further, the mechanical properties of the loncell fibers show promising prospect for technical applications such as reinforcement structures for (bio) composites or precursor for bio-based carbon fibers. Note de contenu : - Man-made cellulosic fibers on the rise
- Novel ionic liquid
- Ioncell-F demonstratorsEn ligne : https://drive.google.com/file/d/1kq1mU_-7Sg5BfPoGMKCHo6IT0rVGGQbE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24267
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Code-barres Cote Support Localisation Section Disponibilité 17257 - Périodique Bibliothèque principale Documentaires Disponible Impact of draw ratio and winder spped on the fiber properties of PET FDY / Ranjit Turukmane in CHEMICAL FIBERS INTERNATIONAL, (10/2022)
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Titre : Impact of draw ratio and winder spped on the fiber properties of PET FDY Type de document : texte imprimé Auteurs : Ranjit Turukmane, Auteur ; Chaitanya Mahajan, Auteur ; Kiran Patil, Auteur Année de publication : 2022 Article en page(s) : p. 46-47 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Fibres textiles -- Propriétés mécaniques
Fibres textiles synthétiques
Fil entièrement étiré
Polyéthylène téréphtalateIndex. décimale : 677.4 Textiles artificiels Résumé : It has been found that spinning machine parameters are the most important factors affecting the final polyethylene terephthalate (PET) filament properties. If the temperature is considered, then low spinning temperature can give higher viscosity, higher flow resistance through the spinneret's nozzle and high die head pressure. The extruded filaments are passed over the heated godets at different speeds to orient and crystallize the molecule by varying the winding speed 4,770, 4,950, 4,500 m/min. The manufactured PET FDY (fully drawn yarn) can be suitable for various end-use applications for high-end undergarments, sportswear and home furnishings. The process optimiza¬tion helped to develop better filaments that can have a scope to be utilized on a large scale. This project is more oriented toward investigation of the impact of draw ratio and winder speed over the molecule mobilization, fixation and crystallization of drawn filament at standard spinning conditions. It was found that the PET FDY tenacity (3.8, 4.1, 5.7 g/den) increased respectively, whereas elongation (40, 38, 32%) decreased at different draw ratios. Note de contenu : - Table 1 : Effect of winding speed on yarn tenacity & elongation En ligne : https://drive.google.com/file/d/1US5XEPRLN3bF_8bEUX28TIr4XKJmv6nS/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38405
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Code-barres Cote Support Localisation Section Disponibilité 23662 - Périodique Bibliothèque principale Documentaires Disponible Improved dyeing ability and UV stability of aramids by finishing with polyvinylamine in CHEMICAL FIBERS INTERNATIONAL, Vol. 68, N° 3 (09/2018)
[article]
Titre : Improved dyeing ability and UV stability of aramids by finishing with polyvinylamine Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 125-127 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbeurs de rayonnement ultraviolet
Benzotriazole
Fibre aramide
Fibres textiles -- Propriétés mécaniques
Photostabilité
Polyvinylamine
Résistance au rayonnement ultraviolet
Teinture -- Fibres textiles synthétiques
TriazineUne triazine est l'un des trois isomères du composé organique constitué d'un hétérocycle aromatique de six atomes, dont trois de carbone et trois d'azote. Chacune a donc pour formule C3H3N3.
La structure de la triazine est hétérocycle aromatique, analogue au cycle à six atome du benzène, mais avec trois atomes de carbone remplacés par des atomes d'azote. Les trois isomères correspondent donc aux emplacements respectifs des atomes de carbone et d'azote sur le cycle. On compte ainsi la 1,2,3-triazine, la 1,2,4-triazine, et la 1,3,5-triazine. Les autres hétérocycles aromatiques courant contenant de l'azote sont les azines (en particulier la pyridine) qui contiennent un atome d'azote, les diazines qui contiennent deux et les tétrazines qui en contiennent quatre.
Les triazines sont des bases faibles, plus faibles que la pyridine.Index. décimale : 677.4 Textiles artificiels Résumé : Aramids are important high-performance fibers, but their usefulness is limited by the comparatively fast UV degradation of the fiber polymers. In addition, aramids are difficult to dye, which increases the cost and complexity of the dyeing procedures and limits the available colors and shades. In the study presented here, it was shown that the finishing of aramids with polyvinylamine improves their dyeability with acidic and reactive dyes. In addition, the polyamine coating was also useful for improving the wash-fastness of UV absorbers coated onto the textiles. Aramids that were finished with UV absorbers showed improved mechanical properties after irradiation with a UV broadband lamp for several hours compared to unmodified samples. Accordingly, this approach represents an interesting starting point for further optimization studies towards aramid textiles with improved UV stability. Note de contenu : - Fig. 1 : Photo-induced degradation of aramid fibers and adsorption curves and chemical structures of common UV absorbers
- Fig. 2 : Finishing of aramids with polyvinylamine (2 wt% solution of Lupamin 9095, dipping time : 5 min, fixation time : 2 min, 180°C) and results of different dyeing experiments
- Fig. 3 : Tensile strength of an aramid yarn marde from Kevlar after 6h and 18h irradiation, without (t) and with a triazine-based UV absorber
- Fig. 4 : Tensile strength of an aramid yarn made from Twaron after 6h irradiation, without (reference) and with a benzotriazole (BT) coatingEn ligne : https://drive.google.com/file/d/158JWX22qebooLrO4ddVFr4Oir6CwdcU0/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30988
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Code-barres Cote Support Localisation Section Disponibilité 20167 - Périodique Bibliothèque principale Documentaires Disponible Innovations in texturing processes for innovative effects generation on polyester filament yarns / Onur Celen in CHEMICAL FIBERS INTERNATIONAL, (10/2018)
[article]
Titre : Innovations in texturing processes for innovative effects generation on polyester filament yarns Type de document : texte imprimé Auteurs : Onur Celen, Auteur Année de publication : 2018 Article en page(s) : p. 80-81 Langues : Anglais (eng) Catégories : Fibres polyesters
Fibres textiles -- Propriétés mécaniques
Fibres textiles -- Propriétés physiques
FilamentsFibre de longueur infinie ou extrême comme celle qu'on trouve dans la soie à l'état naturel. Les fibres manufacturées sont extrudées en filaments qui sont transformés en fils continus, en fibres courtes ou en câbles.
Polyéthylène téréphtalate
TexturationProcédé de frisure, conférant des boucles au hasard, ou modifiant d'une autre manière un fil de filament continu afin d'augmenter son pouvoir couvrant, sa résilience, sa résistance à l'abrasion, sa chaleur, son pouvoir d'isolation thermique, son pouvoir d'absorption d'humidité, ou pour lui donner une texture de surface différente. Les procédés de texturation peuvent être regroupés en six catégories.Index. décimale : 677.4 Textiles artificiels Résumé : PET yarn are increasing their wide range of applications due to their very good chemical, physical and commercial properties such as dimensional stabilitity, little need of down-stream process, high degree of crease resistance, good bulk elasticity, warm handle, high performance/price ratio and easy supply.
PET yarn also provides a wide range of filament shape and combination filament shapes within a yarn to provide desire characteristics. These features enable PET yarn to adapt quickly and inexpensively to changes in the market. Textured PET yarns are dominating the textile market. In the texturing process a flat synthetic multifilament yarn is given spun yarn-like characteristics. It is the modifying of continuous filament yarn to increase bulkiness, cover, resilience, crimp, stretch, dull view, abrasion resistence, warmth insulation, moisture absorption. The aim is to gain similar view and feeling like natural fibers.Note de contenu : - Cotton-like yarn
- Linen-like yarn
- PET yarn with wool touch : Tight spot
- Sparkling yarn : Thick and thin
- Random IMG
- Two-ton yarns
- ITZ
- Parallel mélange texture yarns
- Fancy effect ATY
- Fig. 1 : Examples of POY and different kinds of textured yarns
- Fig. 2 : Cotton-like textured yarn
- Fig. 3 : Air permeability, water absorption, pilling and crease resistance
- Fig. 4 : Fabric made of linen-like textured PET yarn
- Fig. 5 : Fabric made of wool-like textured PET yarn
- Fig. 6 : Fabric made of tight spot PET yarn
- Fig. 7 : Fabric made of thick and thin PET yarn
- Fig. 8 : Fabric made of random IMG yarn
- Fig. 9 : Fabric made of 2-tone yarn
- Fig. 10 : Fabric made of parallel melange textured yarns
- Fig. 11 : Fabric made of fancy effect ATYEn ligne : https://drive.google.com/file/d/1-TJIc60rXg6ug1xpFRsd3hF5ieHUi9CJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31264
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Code-barres Cote Support Localisation Section Disponibilité 20259 - Périodique Bibliothèque principale Documentaires Disponible Innovative high-performance hybrid yarns made from recycled carbon fibers for lightweight structures / Anwar Abdkader in CHEMICAL FIBERS INTERNATIONAL, Vol. 67, N° 3 (09/2017)
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PermalinkModification of PLA by reactive extrusion for industrial fiber applications / C. Burgstaller in CHEMICAL FIBERS INTERNATIONAL, Vol. 72, N° 1 (03/2022)
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