| Titre : |
A comparison of CO2 and N2 foaming behaviors of PP in a visualization system |
| Type de document : |
texte imprimé |
| Auteurs : |
Q.-P. Guo, Auteur ; J. Wang, Auteur ; C. B. Park, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 503-517 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Azote
Dioxyde de carbone
Etudes comparatives
Matériaux -- Allègement
Matières plastiques dans les automobiles
Mousses plastiques
Polypropylène
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Understanding of polypropylene (PP) foaming is critically important to reduce the weight of automotive parts. In this study, we used a batch foaming simulation system with visualization cell, to observe the foaming behaviors of PP that is blown with CO2 and N2 under various experimental conditions. We found that the nucleating agent content, initial temperature, pressure (i. e., gas content), and pressure drop rate during foaming have a significant effect on cell nucleation and cell growth. The cell density and the void fraction of PP foamed with CO2 and N2, respectively, were separately observed and compared. It was found that under the same experimental conditions, the maximum cell density of PP foamed with CO2 was higher than that of PP foamed with N2. However, the maximum cell density of PP foamed with CO2 was determined to be lower than that of PP foamed with N2, when the same gas mole numbers were employed. Based on the experimental results, optimum foaming conditions and effective processing strategies for PP-CO2 system are suggested. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Foaming experiment
- RESULTS AND DISCUSSION : Foaming with CO2 - Foaming with N2 - Comparison of PP foaming with CO2 and N2 |
| DOI : |
https://doi.org/10.3139/217.3993 |
| En ligne : |
https://drive.google.com/file/d/1atcaNF_7wbnVwlhGJt2mnzwBGl_bsSx0/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35072 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXV, N° 5 (11/2020) . - p. 503-517
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