| Titre : |
Excellent resistance at reduced weight : The qualification of suitable foam injection molding processes enables the use of thermosets in lightweight construction applications |
| Type de document : |
texte imprimé |
| Auteurs : |
Christian Hopmann, Auteur ; Maximilian kramer, Auteur ; Stefan Haase, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 28-31 |
| Langues : |
Anglais (eng) |
| Catégories : |
Agents d'expansion (chimie)
Matériaux -- Allègement
Matières plastiques -- Moulage par injection
Matières plastiques -- Propriétés mécaniques
Sphères creuses
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
The transfer of foam injection molding from thermoplastic to thermoset processing has not yet been implemented in industrial practice. IKV Aachen has investigated this transfer and has precisely analyzed the economic efficiency of the process and the potential for lightweight construction. |
| Note de contenu : |
- Which foaming processes are suitable ?
- Hollow glass spheres as an alternative
- Studies with chemical blowing agents
- Pros and cons of hollow glass spheres
- Cost comparison facilitates process selection
- Figure : Foamed thermosets can be used to produce low-density thermally resistant components at low cost
- Fig. 1 : The expansion of the chemical blowing agent in thermoset foam injection molding is similar to thermoplastic foam injection molding in the mold, but the reaction is thermally initiated
- Fig. 2 : The specimen geometry allows the analysis of different material properties
- Fig. 3 : Influence of the process parameters : with an increasing blowing agent content the component weight is reduced. The results of the mechanical analysis are shown on the right
- Fig. 4 : In addition to an increasing content of hollow glass spheres (HGS,) decreasing melt temperatures and injection speeds leat to lower component weights. The stiffness and impact strength can even be improved
- Fig. 5 : The cost comparison calculation shows that the use of chemical blowing agent results in an economic advantage for large quantities. Hollow glass spheres, on the other hand, improve the mechanical properties |
| En ligne : |
https://drive.google.com/file/d/1i85hS5I34K35GwyaKLUowwPd8M4Mf9o0/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33654 |
in KUNSTSTOFFE INTERNATIONAL > Vol. 109, N° 11 (11/2019) . - p. 28-31
Aller sur edunet
Accueil
Excellent resistance at reduced weight in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 11 (11/2019)
