| Titre : |
Converging-diverging flow in a novel extruder and its application in film blowing |
| Type de document : |
texte imprimé |
| Auteurs : |
X.-C. Yin, Auteur ; B. Tang, Auteur ; Z. W. Yu, Auteur ; Z. T. Yang, Auteur ; G.-J. He, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 552-557 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Carbonate de calcium Le carbonate de calcium (CaCO3) est composé d'un ion carbonate (CO32-) et d'un ion calcium (Ca2+), sa masse molaire est de 100,1 g/mole.
C'est le composant principal du calcaire et de la craie, mais également du marbre. C'est aussi le principal constituant des coquilles d'animaux marins, du corail et des escargots.
Déchirure (mécanique)
Essais dynamiques
Extrudeuse rotative
Films plastiques -- Propriétés mécaniques
Matières plastiques -- Moulage par extrusion-soufflage
Mélange
Microstructures -- Analyse
Plastification
Polyéthylène basse densité
Traction (mécanique)
|
| Index. décimale : |
668.9 Polymères |
| Résumé : |
This article proposes a novel extruder based on converging-diverging flow for polymer processing. The extruder is composed of four vane plasticizing and conveying units (VPCU) and three mixing units. The working principle of the new extruder is described in detail. Film was produced on this machine by using of CaCO3 filled LDPE composites. The film's mechanical properties were studied in terms of tensile strength and tear strength. The microstructure of the composites was studied in terms of SEM. The thermo-mechanical history of the material suffered in this extruder can be remarkably shortened in contrast to a single screw extruder with the same maximum output. Experimental results showed that the die pressure has little effect on output. More CaCO3 can be filled into the blend without degrading the parts performance. |
| Note de contenu : |
- EXPERIMENTAL : 1. Vane plasticizing and conveying unit - 2. Mixing unit - 3. Converging-Diverging flow type extruder - 4. Materials - 5. Preparation of CaCO3 filled LDPE film - 6. Specimen preparation - 7. Characterization and measurement
- RESULTS AND DISCUSSION : 1. Extrusion characteristics of the extruder - 2. Mechanical properties - 3. Microstructure of the CaCO3/LDPE blends |
| DOI : |
10.3139/217.2856 |
| En ligne : |
https://drive.google.com/file/d/1Ei3tldSGX80DfX1095ykJE21slH2zVFM/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22220 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 5 (11/2014) . - p. 552-557
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