| Titre : |
Generation of microcellular foams by supercritical carbon dioxide in a PMMA compound |
| Type de document : |
texte imprimé |
| Auteurs : |
K. Y. Kim, Auteur ; S. L. Lang, Auteur ; H.-Y. Kwak, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 8-16 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Matériaux poreux
Mousses plastiques
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
|
| Index. décimale : |
668.9 Polymères |
| Résumé : |
Decompression experiments from a PMMA compound saturated with CO2 at high pressure were performed to investigate the heterogeneous effect due to the aggregate of the additives on the microcellular foam structure generated. The observed results were compared with calculation results from a previously proposed homogeneous nucleation model. Uniform distribution of foams was obtained at a lower temperature of T = 20°C at various initial pressures tested. However, the heterogeneous effect due to the aggregate of the additives in the compound occurred at the solution temperature of T = 40°C, which is quite different from the results obtained in PMMA/CO2 solution where homogeneous nucleation occurs in the temperature range between 40°C and 70°C. Experimental results obtained in this study may be applied to the injection-molding process of PMMA compounds. |
| DOI : |
10.3139/217.0027 |
| En ligne : |
https://drive.google.com/file/d/1CADWQfIJMfh37sx4Pn_fmHnTgnVLv12q/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2655 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIII, N° 1 (03/2008) . - p. 8-16
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Generation of microcellular foams by supercritical carbon dioxide in a PMMA compound in INTERNATIONAL POLYMER PROCESSING, Vol. XXIII, N° 1 (03/2008)
