[article]
| Titre : |
Visualisation and analysis of the flow along the kneading block of a twin-screw extruder |
| Type de document : |
texte imprimé |
| Auteurs : |
Olga. S. Carneiro, Auteur ; Arnaud Poulesquen, Auteur ; Bruno Vergnes, Auteur ; Jose A. Covas, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 301-308 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
The flow of a silicone oil of high viscosity along a block of staggered kneading discs of a co-rotating twin screw extruder was investigated with the use of an acrylic transparent barrel. A digital video camera recorded the flow path of a red dye, dispersed in the silicone oil, along the screws and in the intermeshing zone. Different geometrical configurations were studied, namely various staggering angles (+30°, 90° and -30°) and thicknesses (7.5, 15.0 and 22.5 mm) of kneading blocks. The effects of these geometrical parameters on the pressure generation and filling ratio were investigated. It was observed that, even for negative staggering, the filling ratio of the kneading block was lower than one. Based upon these experiments, analytical expressions describing the filling ratio as function of geometry (staggering angle, thickness and number of discs) and operating conditions (feed rate and screw speed) were derived. |
| Note de contenu : |
- MATERIALS AND EXPERIMENTAL PROTOCOL
- EXPERIMENTAL RESULTS : Staggering angle α'=-30° - Staggering angle α'=+30° - Staggering angle α'=90°
- CALCULATION OF THE FILLING RATIO : Negative staggering angle - Neutral staggering angle |
| DOI : |
10.3139/217.1708 |
| En ligne : |
https://drive.google.com/file/d/1qhA7esmiVYtH1a-jB7TU6I2laXgA8QAk/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16018 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XVII, N° 4 (12/2002) . - p. 301-308
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Visualisation and analysis of the flow along the kneading block of a twin-screw extruder in INTERNATIONAL POLYMER PROCESSING, Vol. XVII, N° 4 (12/2002)
