[article]
| Titre : |
High-speed melt spinning of polyethylene terephthalate with periodic oscillation of take-up velocity |
| Type de document : |
texte imprimé |
| Auteurs : |
W. Takarada, Auteur ; K. Kasama, Auteur ; Hiroshi Ito, Auteur ; Takeshi Kikutani, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 380-387 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
To investigate the non-steady-state melt spinning behavior, take-up velocity was varied periodically in the high-speed melt spinning process of polyethylene terephthalate and the timecourse changes of velocity and diameter of the spin-line were measured simultaneously. A numerical simulation program for the non-steady-state melt spinning process was also developed. In the range of relatively low take-up velocities, experimental results and results of numerical simulation of the non-steadystate melt spinning process showed a fair agreement, in that the amplitude for the variation of the reciprocal of the crosssectional area and that for the variation of velocity of the spin-line had a linear relation. An increase in the frequency of velocity oscillation led to a less significant variation in the thickness of as-spun fibers. On the other hand, there was a phase shift between the oscillation of take-up velocity and that of the reciprocal of cross-sectional area of the spin-line at the point of take-up. When take-up velocity was increased, starting of the orientation-induced crystallization along with the occurrence of neck-like deformation caused some characteristic behaviors such as significant increases in the amplitudes of velocity and diameter fluctuations at a certain region in the spin-line. Such behaviors could be reproduced in the numerical calculation by incorporating the stress dependent change of solidification temperature. It was also revealed that the orientation-induced crystallization has the effect of stabilizing the spinning system. |
| DOI : |
10.3139/217.1849 |
| En ligne : |
https://drive.google.com/file/d/1auL-E5JomBFYy9ti7eoJAV8uR4Stq9Rh/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3271 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XIX, N° 4 (12/2004) . - p. 380-387
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