| Titre : |
Influence of extrusion conditions on fiber breakage along the srew profile during twin screw compounding of glass fiber-reinforced PA |
| Type de document : |
texte imprimé |
| Auteurs : |
J. Ville, Auteur ; F. Inceoglu, Auteur ; N. Ghamri, Auteur ; J. L. Pradel, Auteur ; A. Durin, Auteur ; Rudy Valette, Auteur ; Bruno Vergnes, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 49-57 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Distribution et orientation des fibres
Extrudeuse bi-vis
Fibres de verre -- Rupture
Matériaux hybrides -- Extrusion
Polyamide 12
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
In the present study, Polyamide 12 was compounded with glass fibers in both laboratory and industrial twin screw extruders using various processing conditions (screw speed and feed rate). Dead-stop experiments were performed and samples were collected at different locations along the screws in order to determine the fiber length distribution and the extent of fiber breakage. Results show that significant fiber break-up occurs right after the addition of glass fibers to the molten matrix. Similarly fiber length distribution changes drastically at the first sampling location, near the glass fiber feeder. Processing conditions also influence the extent of degradation: it increases with screw speed and decreases with feed rate, which controls the residence time. Flow modelling has been used to calculate the flow conditions along the screw profile. It is shown that the modified Shon-Liu-White model previously proposed to describe the average fiber length evolution as function of specific energy is not able to correctly predict the evolution along the screw profile. In similar processing conditions, the large industrial extruder appears as less severe than the small laboratory one. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Fiber length measurements
- RESULTS AND DISCUSSION : Laboratory twin screw extruder - Industrial twin screw extruder - Discussion and interpretation |
| DOI : |
10.3139/217.2659 |
| En ligne : |
https://drive.google.com/file/d/146Tw6c-qHGd73ONjlUA89VanYwkZ9Stv/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17764 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVIII, N° 1 (03/2013) . - p. 49-57
Aller sur edunet
Accueil
Influence of extrusion conditions on fiber breakage along the srew profile during twin screw compounding of glass fiber-reinforced PA in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 1 (03/2013)
