| 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
Polytétrafluoréthylène
|
| Index. 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 polymers |
| En ligne : |
https://drive.google.com/file/d/1WZkwt8IyeYXESfGZqYaU-axwqsAOXCRr/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| 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
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