| Titre : |
Synergistic material extrusion 3D-printing using core–shell filaments containing polycarbonate-based material with different glass transition temperatures and viscosities |
| Type de document : |
texte imprimé |
| Auteurs : |
Fang Peng, Auteur ; Bryan D. Vogt, Auteur ; Miko Cakmak, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 406-414 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Etat fondu (matériaux)
FilamentsFibre de longueur infinie ou extrême comme celle qu'on trouve dans la soie à l'état naturel. Les fibres manufacturées sont extrudées en filaments qui sont transformés en fils continus, en fibres courtes ou en câbles.
Impression tridimensionnelle
Matières plastiques -- Extrusion
Matières plastiques -- Propriétés mécaniques
Polycarbonates
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The application of 3D printing of thermoplastics by Material Extrusion (MatEx) has commonly been limited by their poor mechanical strength that results from voids and weak interfaces between printed layers. Here, we demonstrate that core–shell structured filaments made of polycarbonate-based thermoplastics can achieve synergistic improvement in their interfacial bonding from the combination of high-glass transition temperature (T g)/high-viscosity core and low-T g/low-viscosity shell. Tensile strength along the printing direction was enhanced with the core–shell filaments. Layer-interfacial bonding strength as determined by Izod impact tests of the 3D printed parts is significantly improved by using filaments either with only a core–shell T g mismatch or both T g/viscosity core–shell mismatch. The mechanical behavior can be rationalized in terms of improved inter-layer molecule diffusion by a low T g/viscosity shell, better printability at higher temperature due to the core with higher melt strength, and better bulk mechanical strength of high-viscosity/T g core. |
| Note de contenu : |
- EXPERIMENTAL : Filament extrusion - 3D printing - Characterization
- RESULTS AND DISCUSSION : Material properties - Core-shell structure - Tensile properties
- Table 1 : Temperature profile for filament extrusion using Rheomex 252p.
- Table 2 : Temperature profile for filament extrusion using M-PAK125
- Table 3 : Temperature profile for filament co-Extrusion |
| DOI : |
https://doi.org/10.1515/ipp-2022-4217 |
| En ligne : |
https://drive.google.com/file/d/1t-UNX1-sKaib9Np8EPRGlMqfrDgCAjXm/view?usp=shari [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37916 |
in INTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 4 (2022) . - p. 406-414
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