| Titre : |
Increasing stability with hollow structure : Projectile injection technology changes the rules for thermoplastic structural components |
| Type de document : |
texte imprimé |
| Auteurs : |
Eva Heiml, Auteur ; Markus Wimmer, Auteur ; Umut Cakmak, Auteur ; Christian Wolfsberger, Auteur ; Markus Thurmeier, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 56-59 |
| Langues : |
Anglais (eng) |
| Catégories : |
Composites à fibres de carbone
Composites à fibres de verre
Corps creux
Matières plastiques dans les automobiles
Moulage par injection assisté par projectile
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Polypropylène
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Plastic Innovation GmbH is developing a concept for the integration of stiffening structures with the possibility of function integration for automotive components that can be economically and sustainably produced in one production cycle using projectile-assisted injection molding. With the support of several partners from research and industry, test components were manufactured, and numerical simulations were conducted to evaluate the residual wall thickness of the hollow structures. |
| Note de contenu : |
- Hollow components for mobility
- Comparison of FAIM and PAIM
- Different cavity cross-sections and residual wall thicknesses
- Special feature of the tool : projectiles are produced in one shot
- Better results with PAIM
- Fig. 1 : Comparison of cooling times of cylinders with equal mass and different cross-sections. For the hollow cylinder, approximately the formula for plates is used
- Fig. 2 : Comparison of resulting hollow cross-sections with different geometries for FAIM and PAIM
- Fig. 3 : Experimental component with reinforcing thin-walled channel geometries. Injection points of the polymer melt or fluid, as well as the overflow cavity, are depicted, along with the projectiles in three different sizes (large, medium, small)
- Fig. 4 : Six measurement positions for determining the residual wall thickness
- Fig. 5 : Residual wall thicknesses at different measurement positions for PP plates
- Fig. 6 : Residual wall thicknesses at different measurement positions for PA plates
- Fig. 7 : Comparison of three plates produced with different projectiles using the PAIM process
- Table : Comparison of component masses for PP and PA plates, manufactured using the GAIM and PAIM processes, with simulation results |
| En ligne : |
https://drive.google.com/file/d/1xheA-koayk2frZQ9kfsZLQUjsXTzGXuD/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40953 |
in PLASTICS INSIGHTS > Vol. 114, N° 2-2024 (2024) . - p. 56-59
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