[article]
| Titre : |
Mechanical properties and fracture morphology of blends of PC with PMMA |
| Type de document : |
texte imprimé |
| Auteurs : |
Sungkyu Lee, Auteur ; S.-S. Cho, Auteur ; L.-S. Kang, Auteur ; C. G. Lee, Auteur ; H. S. Hong, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 626-631 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Alliages polymères -- propriétés mécaniques
Essais dynamiques
Matières plastiques -- Recyclage
Microscopie électronique à balayage
Polycarbonates
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.
Rupture (mécanique)
Traction (mécanique)
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The poly methyl methacrylate (PMMA) and polycarbonate (PC) residues were collected from waste LCD panels for use as raw materials to prepare PC/PMMA polymer blends (1/99, 3/97, 5/95, 10/90), which were extruded in a twin screw extruder. The extrudates were subsequently pelletized and then dried in an oven before injection molding into tensile bars of ASTM D638-91, type I. The tensile bars were placed in an Instrontype tensile tester and the load-elongation curves of tested 5/95 specimens demonstrated distinctively varied yielding before final brittle fracture but 10/90 showed some sign of ductile behavior, peak in the load-elongation curve attributable to formation of a neck. The tensile strength increased from 569.6 to 633.3 kgf/cm2 with PC concentration in the range of 1 to 5 wt% while it decreased at 10 wt% PC. On the contrary, transverse rupture strength increased with added amount of PC. Addition of PC could have toughened recycled PMMA matrix under impact test conditions. Finally, the fractured surfaces were examined by scanning electron microscopy and numerous fine particles dispersed in the matrix of 10/90 are regarded as PC phase, in reasonable agreement with literature results. On the other hand, fracture surface of 5/95 showed nearly homogeneous matrix phase of PC/PMMA. |
| Note de contenu : |
- EXPERIMENT : Materials and blending - Measurements
- RESULTS AND DISCUSSION : Tensile deformation - Fracture morphology |
| DOI : |
10.3139/217.2626 |
| En ligne : |
https://drive.google.com/file/d/1woeaUkfjqukfgn7yr2aNjrwaEcq10Fy9/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16645 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVII, N° 5 (11/2012) . - p. 626-631
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Mechanical properties and fracture morphology of blends of PC with PMMA in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 5 (11/2012)
