| Titre : |
Effect of the mandrel rotation speed and inner wall cooling Rate on the performance and structure of polypropylene block-copolymer pipe |
| Type de document : |
texte imprimé |
| Auteurs : |
R. Han, Auteur ; M. Nie, Auteur ; S.-B. Bai, Auteur ; Q. Wang, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 496-505 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Copolymères séquencés
Matières plastiques -- Extrusion
Matières plastiques -- Propriétés mécaniques
Mouvement rotatoire
Polypropylène
Tubes
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Polypropylene block-copolymer (PP-B) pipes were prepared using a self-designed rotational extrusion processing system. The experimental results showed that though the crystal morphology in the prepared PP-B pipes did not change compared to conventional extrusion, the molecular chains in amorphous region apparently deviated from the axial direction. As a result, in comparison with the conventional extrusion pipes, the mechanical properties in hoop direction and the resistance to crack growth of rotation extrusion PP-B pipes were greatly improved. Furthermore, both the two mechanical properties improved monotonously with increasing mandrel rotation speed and inner wall cooling rate. |
| DOI : |
10.3139/217.2761 |
| En ligne : |
https://drive.google.com/file/d/1yZG4O8sqa8HgUJ1z4PuX3wGPBhKoOPIP/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19896 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVIII, N° 5 (11/2013) . - p. 496-505
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