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http://dx.doi.org/10.7473/EC.2018.53.2.67

Effect of Precured EPDM on the Property of Magneto-rheological Elastomer Based on NR/EPDM Blend  

Na, Bokgyun (Department of Polymer Engineering, The University of Suwon)
Chung, Kyungho (Department of Polymer Engineering, The University of Suwon)
Publication Information
Elastomers and Composites / v.53, no.2, 2018 , pp. 67-74 More about this Journal
Abstract
Magneto-rheological elastomers (MREs) are smart materials in which the inherent stiffness and damping properties can be changed by the influence of an external magnetic field. The magneto-rheological (MR) effect depends on the orientation characteristics of the dispersed magneto-responsible particles (MRPs) in the matrix. In this study, natural rubber (NR) and ethylene propylene diene rubber (EPDM) were blended and used as a matrix of an MRE. EPDM was pre-cured before blending with NR. The Mooney viscosity, curing characteristics, and mechanical properties were analyzed with various pre-curing conditions of EPDM and the NR/EPDM blend. The results show that excellent mechanical properties of the NR/EPDM blend-based MRE were obtained when the pre-curing time of EPDM was 60 min. The aging property of the NR-based MRE was improved by the introduction of pre-cured EPDM. Also, the anisotropic MRE showed a higher MR effect than that of the isotropic MRE.
Keywords
magneto-rheological elastomer; NR/EPDM blend; precuring; aging property; MR effect;
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