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Rheological and dynamic mechanical properties of polymer-bonded magnets based on Sm2Co17 and polyamide-12
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- Qadeer, Muhammad I. (author)
- KTH,Fiber- och polymerteknologi,Materialvetenskap
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- Savage, Steven J. (author)
- KTH,Materialvetenskap,Swedish Defence Research Agency (FOI), Linköping, Sweden
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- Gedde, Ulf W. (author)
- KTH,Polymera material
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- (creator_code:org_t)
- 2014-07-25
- 2014
- English.
- In: Journal of Materials Science. - : Springer Science and Business Media LLC. - 0022-2461 .- 1573-4803. ; 49:21, s. 7529-7538
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Keyword
- 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
Publication and Content Type
- ref (subject category)
- art (subject category)
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