Please use this identifier to cite or link to this item:
|Title:||Magnetorheological effect of magnetoactive elastomer with a permalloy filler|
|Citation:||Magnetorheological effect of magnetoactive elastomer with a permalloy filler / D. Borin, G. Stepanov, A. Musikhin, et al. — DOI 10.3390/polym12102371 // Polymers. — 2020. — Vol. 12. — Iss. 10. — P. 1-25. — 2371.|
|Abstract:||Within the frames of this study, the synthesis of a permalloy to be used as a filler for magnetoactive and magnetorheological elastomers (MAEs and MREs) was carried out. By means of the mechanochemical method, an alloy with the composition 75 wt.% of Fe and 25 wt.% of Ni was obtained. The powder of the product was utilized in the synthesis of MAEs. Study of the magnetorheological (MR) properties of the elastomer showed that in a ~400 mT magnetic field the shear modulus of the MAE increased by a factor of ~200, exhibiting an absolute value of ~8 MPa. Furthermore, we obtained experimentally a relative high loss factor for the studied composite; this relates to the size and morphology of the synthesized powder. The composite with such properties is a very perspective material for magnetocontrollable damping devices. Under the action of an external magnetic field, chain-like structures are formed inside the elastomeric matrix, which is the main determining factor for obtaining a high MR effect. The effect of chain-like structures formation is most pronounced in the region of small strains, since structures are partially destroyed at large strains. A proposed theoretical model based on chain formation sufficiently well describes the experimentally observed MR effect. The peculiarity of the model is that chains of aggregates of particles, instead of individual particles, are considered. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.|
EXTERNAL MAGNETIC FIELD
|metadata.dc.description.sponsorship:||This work is supported by the research association between the Deutsche Forschungsgemeinschaft (DFG) under Grant Bo 3343/2‐1 within PAK 907 and support of RFBR under Grant 19‐53‐12039. A.M., A.Z. are grateful the RFBR, projects 19‐31‐90003, 19‐52‐45001, 20‐02‐00022 and the Ministry of Science and Higher Education of the Russian Federation, project № FEUZ‐2020‐0051.|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.