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EPDM/MVQ polymer blends based magnetorheological elastomer with good mechanical and thermostability performances

Abstract

Magnetorheological elastomers (MREs) with outstanding magnetic-control properties are highly desirable for applications, such as vibration attenuation, smart sensing, and soft robot. However, the low strength and thermolability of these materials still restrict their application in attenuating the vibration of large-scale devices. In this paper, we prepared an MRE based on ethylene-propylene-diene monomer (EPDM)/ methylvinyl silicone rubber (MVQ) polymer blends. The resulting MRE showed good thermostability and mechanical properties. Good interfacial interaction and particle dispersion were obtained by modifying the surface of carbonyl iron powder (CIP) with silica coating by sol-gel method. The compatibility between the EPDM and MVQ was promoted by silane coupling agents. Moreover, the resulting MRE had high mechanical strength and elongation at break. The dynamic viscoelastic properties of the MRE were tested using a rheometer. The influences of frequency, strain, matrix, temperature, and magnetic field were discussed comprehensively, and relevant physical mechanisms were proposed. Finally, thermal aging tests were performed to evaluate the heat resistance of the MRE. Analytical results showed that the resulting MRE could be significantly applied to reduce the vibration of large devices because of its excellent mechanical properties and thermostability.

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Supplementary files

Publication details

The article was received on 20 Aug 2018, accepted on 06 Oct 2018 and first published on 08 Oct 2018


Article type: Paper
DOI: 10.1039/C8SM01712C
Citation: Soft Matter, 2018, Accepted Manuscript
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    EPDM/MVQ polymer blends based magnetorheological elastomer with good mechanical and thermostability performances

    S. Qi, M. Yu, J. Fu, M. Zhu, Y. Xie and W. Li, Soft Matter, 2018, Accepted Manuscript , DOI: 10.1039/C8SM01712C

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