| Titre : |
New liquid crystal polyester filament yarns |
| Type de document : |
texte imprimé |
| Auteurs : |
Kota Nakamura, Auteur ; Ryosuke Sakae, Auteur ; Hisatoshi Tanaka, Auteur ; Munekazu Matoba, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 38-39 |
| Langues : |
Anglais (eng) |
| Catégories : |
Cristaux liquides
Extrusion filage
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.
Fluage
Morphologie (matériaux)
Polyesters
Torsion (mécanique)
|
| Index. décimale : |
677.4 Textiles artificiels |
| Résumé : |
Since the development of aramid fibers by DuPont, several companies have conducted research into the possibility of melt-spinnable polyarylate fibers. In the present day, Liquid Crystal Polyester (LCP) fibers, which are made from a polymer consisting of 6-hydroxy-2-naphthoic acid and hydroxy-benzoic acid using Celanese technology, have been placed on the market by Kuraray. LCP fibers are a kind of super-fibers, and can be obtained by melt-spinning and then shifting to heat treatment for solid state polymerization in the form of fibers, which gives superior performance to fi bers such as higher level of tenacity, modulus, wet strength, etc. The reason why only a limited number of manufacturers could produce them is in the difficulty of its spinning and heat treating processes, though LCP filament yarns have interesting characteristics. However, Toray Industries has succeeded in the development of new LCP filament yarns named Siveras which are based on polymer different from existing LCP fibers. Toray is able to produce both LCP polymer and fibers. Siveras is developed by the combination of polymer technology and original spinning processes which contributed in creating unique characteristics. |
| Note de contenu : |
- Fig. 1 : Physical properties of Siveras
- Fig. 2 : Creep property of Siveras
- Fig. 3 : Strength retention ratio of several super fibers after twisting at twist factor 80
- Fig. 4 : Morphology of super fibers after twisting at twist factor 80
- Fig. 5 : Strength and strength retention ratio of various super fibers in rope product
- Fig. 6 : Strength retention ratio after bending repeatedly under 0.88 cN/dtex load |
| En ligne : |
https://drive.google.com/file/d/1sbNszAtkQZj3dZNdlSg4TKM1u1ZamYPc/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33081 |
in CHEMICAL FIBERS INTERNATIONAL > (10/2019) . - p. 38-39
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New liquid crystal polyester filament yarns in CHEMICAL FIBERS INTERNATIONAL, (10/2019)
