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Working within the framework / Norwin van Riel in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 3 (03/2019)
[article]
Titre : Working within the framework : Long glass fiber-reinforced ABS replaces magnesium in a semi-structure component Type de document : texte imprimé Auteurs : Norwin van Riel, Auteur ; Gerhard Slik, Auteur ; Berend Hoek Année de publication : 2019 Article en page(s) : p. 29-32 Langues : Anglais (eng) Catégories : Automobiles -- Pièces
Composites à fibres -- Propriétés mécaniques
Composites à fibres de verre
Composites à fibres longues
Etudes comparatives
Matières plastiques dans les automobiles
Polyamide 6
Polypropylène
Terpolymère acrylonitrile butadiène styrèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : A function carrier connects in the instrument panel area the driver-side displays and functional elements with the center console. As a result, this component must be dimensionally stable and meet tight tolerances. Long glass fiber-reinforced ABS has proven to meet all part performance requirements at considerably lower weight in comparison the currently used cast magnesium. Note de contenu : - Comparisons with polypropylene and polyamide
- Development and implementation
- Fig. 1 : The stiffness of the ABS LGF material in relation to glass content and temperature
- Fig. 2 : The stiffness of different long glass fiber-reinforced thermoplastics shows that PP with the same fiber content achieves significantly less tensile modulus of elasticity
- Fig. 3 : After water absorption (conditioning), the tensile modulus of elasticity decreases less with ABS alloy than with PA6 alloy
- Fig. 4 : The original geometry and space available for the stiffening ribs
- Fig. 5 : The topology optimization results in red highlight the areas that require ribbing. In the lower right area, the calculated rib pattern is clearly visible
- Fig. 6 : In the updated part geometry, the yellow lines show the stiffening ribs added to the original design of the part
- Fig. 7 : Fill image calculation of the molded part with the hot/cold runner systemEn ligne : https://drive.google.com/file/d/1PitwDhGHAlazmLWE06iJo7SMb_zxjClj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32119
in KUNSTSTOFFE INTERNATIONAL > Vol. 109, N° 3 (03/2019) . - p. 29-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20754 - Périodique Bibliothèque principale Documentaires Disponible "Wrinkles" in plastics due to aging / Markus Tröbs in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 8 (08/2017)
[article]
Titre : "Wrinkles" in plastics due to aging : Thermo-oxidative aging of polypropylene and polyamide 6 Type de document : texte imprimé Auteurs : Markus Tröbs, Auteur Année de publication : 2017 Article en page(s) : p. 45-47 Langues : Anglais (eng) Catégories : Matières plastiques -- Détérioration
Oxydation thermique
Polyamide 6
PolypropylèneIndex. décimale : 668.4 Plastiques, vinyles Résumé : Plastics are subjected to aging during processing, application and use. The aging mechanisms are specific to the type of polymer and environmental conditions. For instance, many plastics yellow and become brittle. While the aging of polypropylene spreads out with local spotting over the volume, the aging of polyamide 6 progresses from the surface to the center. Comparative investigations showed that these are not the only differences. Note de contenu : - Aging behavior of polypropylene and thermo-oxidative degradation
- Chemical aging processes in PA6 due to thermo-oxidative loading
- Physical aging processes due to thermal loading
- FIGURES : 1 Scanning electron microscope image of extremely brittle polypropylene after 69 days of thermo-oxidative aging at 140°C showing a number of cracks and fissures in the material - 2. Oxidation induction time depending on aging time at various temperatures indicates stabilizer is used up, a radical degradation mechanism begins in the PP - 3. The color change in PA6 sheets due to thermo-oxidative aging at 190°C shows uniform, homogeneous discoloring on sheet surfaces - 4. Bending strength depending on aging time at various temperatures. Bending strength falls rapidly after 1-2 days aging only - 5. Viscosity number depending on aging time at various temperatures. The initial increase in the viscosity number is due to post-condensation of PA6. After that chain degradation follows (solvent 90% formic acid)En ligne : https://drive.google.com/file/d/1-E5pwsuLC486sVKelH63gnFefyZnORhA/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29251
in KUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 8 (08/2017) . - p. 45-47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19181 - Périodique Bibliothèque principale Documentaires Disponible