Détail de la notice
Titre du Document
The influence of adhesion promoters on the properties of injection moulded long-glass-fibre polypropylene
Auteur(s)
PELTONEN P. ; PÄÄKKÖNEN E. J. ; JÄRVELÄ P. K. ; ...
Résumé
Different grades of coupling agents were added to the polypropylene homopolymer matrix during melt impregnation of continuous glass fibres. All of the ingredients used in the experiments were commercial products, and the amounts of coupling agents added to the polypropylene were based on the recommendation of the manufacturer. The addition of coupling agents on the polypropylene matrix did not decrease the degree of impregnation of manufactured prepreg. Melt impregnated PPJGF prepreg was pelletized to the length of 10 mm, injection moulded and tested. In addition, two commercial long fibre materials and one commercial short fibre compound were injection moulded and tested. All of the components included a glass fibre weight fraction of 40%. The addition to some coupling agents improved tensile and flexural properties remarkably compared to a non-coupled composite. As a typical result, impact strength values of the same specimens were decreased. Low temperature impact strength of long fibre composites were higher compared to impact strengths obtained at room temperature. All long fibre composites showed superior impact properties compared to short fibre composites. The melting histories of the matrices were not affected by the addition of different grades of coupling agents, but the cooling run of the DSC analysis could cause differences in the crystallisation of the coupled matrices. Residual fibre lengths were analysed from the mouldings. The morphology of the interface of t
Editeur
Institute of Materials
Identifiant
ISSN : 0959-8111
Source
Plastics rubber and composites processing and applications A. 1995, vol. 23, n° 2, pp. 111-126 [bibl. : 39 ref.]
Langue
Anglais
Pour les membres de la communauté du CNRS, ce document est autorisé à la reproduction à titre gratuit.
Pour les membres des communautés hors CNRS, la reproduction de ce document à titre onéreux sera fournie sous réserve d’autorisation du Centre Français d’exploitation du droit de Copie.

Pour bénéficier de nos services (strictement destinés aux membres de la communauté CNRS (Centre National de la Recherche Scientifique), de l'ESR français (Enseignement Supérieur et Recherche), et du secteur public français & étranger) :