Rheological and dynamic mechanical properties of polymer-bonded magnets based on Sm2Co17 and polyamide-12
2014 (English)In: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 49, no 21, 7529-7538 p.Article in journal (Refereed) Published
The rheological and dynamic mechanical properties of polymer-based composites of Sm2Co17 and polyamide-12 with different particle loadings, sizes, and surface treatments are reported. Sm2Co17 particles were surface-treated with three different silanes: 3-glycidoxy(propyl)trimethoxysilane, 3-amino(propyl)trimethoxysilane (APTMS), and methyltrimethoxysilane (MTMS). It was shown, for the composites with untreated particles, that the viscosity and storage modulus increased with increasing filler content (0-60 vol%) and decreasing filler particle size. In addition, the glass transition temperature increased significantly and the damping decreased with increasing filler content. Of the silanes, the MTMS, which yielded only a thin surface layer, had in general the least effect on the rheological properties of the composite. The composite containing the APTMS-coated filler showed the highest storage modulus. The results give new insights on how to prepare polymer-bonded magnets with optimal process conditions (rheology) and dynamic mechanical properties, by varying the amount of particles, their size, and surface treatment.
Place, publisher, year, edition, pages
2014. Vol. 49, no 21, 7529-7538 p.
Elastic moduli, Fillers, Permanent magnets, Silanes, Surface treatment, Dynamic mechanical property, Filler particles, Methyltrimethoxysilane, Polymer based composite, Polymer-bonded magnets, Rheological property, Thin surface layer, Trimethoxysilane
IdentifiersURN: urn:nbn:se:kth:diva-151322DOI: 10.1007/s10853-014-8460-4ISI: 000340679000021ScopusID: 2-s2.0-84906315426OAI: oai:DiVA.org:kth-151322DiVA: diva2:748172
QC 201409182014-09-182014-09-182016-01-13Bibliographically approved