| Titre : |
Strong flyweights : Reducing density and part weight via the material without altering existing processes |
| Type de document : |
texte imprimé |
| Auteurs : |
Julian Bruns, Auteur ; Roland Wehmeyer, Auteur ; Daniel Sander, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 21-24 |
| Langues : |
Anglais (eng) |
| Catégories : |
Charges (matériaux)
Matériaux -- Allègement
Matières plastiques dans les automobiles
Microsphères
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.
Polycarbonate de propylèneLe carbonate de polypropylène (PPC), un copolymère d'anhydride carbonique et d'oxyde de propylène, est un thermoplastique. Des catalyseurs tels que le glutarate de zinc sont utilisés dans sa polymérisation.
Polypropylène
Talc
Verre
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Lightweight is no longer just a matter of replacing metal. More and more often, plastics already in use are substituted by lighter weight polymers. New low-density compounds exhibit not only good materials and processing properties. On top of that, they offer various secondary advantages, such as are illustrated by an engine room bulkhead cover and a car door sill. |
| Note de contenu : |
- Bulkhead cover: same properties, cut density
- No alterations required to the existing mold
- Lighter door sills thanks to better fillers
- Hollow glass sphere-compound with improved scratch resistance
- FIGURES : 1. The engine room buklhead cover from modified polyamide Schulamid RD6 GF30 turns out to be 9% lighter than its PA6-GF30 predecessor, but has comparable materials properties. The compound also exhibits improved adhesion to TPE sealants - 2. Comparison of the relevant material characteristics data (conditioned values) for applying both Schulamid 6 GF30 and the lower density drop-in version, Schulamid RD6 GF 30 - 3. Prototype of a PP door still that turns out to be some 15 % lighter than the talc-filled PP version thanks to Polyfort PPC MGB 6 RD. The additionally improved flowability proves its worth on this 1250 mm long part - 4. Comparison of the relevant materials characteristics data for applying both Polyfort FIPP 20 T and the lower density drop-in-version Polyfort PPC MGB 6 RD - 5. The new, hollow glass microsphere compound Polyfort PPC MGB 6RD is more scratch-resistant than the commonly used talc-reinforced PP compound (scratch test according to automobile norm PV 3952)
- TABLES : 1. Comparison of selected materials characteristics of Schulamid 6 GF30 and of its reduced-density RD version. The RD type is more dimensionally stable, absorbs less water, and has comparable mechanical properties - 2. Comparison of the relevant materials characteristics data of the talc-reinforced polypropylene with those of the scratch-resistant PP with hollow glass spheres |
| En ligne : |
https://drive.google.com/file/d/1dk9YBZOvjjl5_1QERZyRVJ2TTkkQy2qQ/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30247 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 108, N° 3 (03/2018) . - p. 21-24
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Strong flyweights in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 3 (03/2018)
