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Microstructure and dynamic mechanical properties of magnetorheological elastomer based on ethylene/acrylic elastomer prepared using different manufacturing methods

文献类型： 外文期刊

作者： Gao, Tianming 1 ; Xie, Ruihong 2 ; Chung, Kyungho 1 ;

作者机构： 1.Univ Suwon, Dept Polymer Engn, Hwaseong Si 445743, Gyeonggi Do, South Korea

2.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Zhanjiang 524001, Peoples R China

关键词： magnetorheology; elastomers; grain size; tensile strength; tensile testing; scanning electron microscopy; elastic moduli; microstructure; dynamic mechanical properties; magnetorheological elastomer; ethylene-acrylic elastomer; anisotropic MRE; isotropic MRE; magnetic held; curing; scanning electron microscope; universal testing machine; dynamic mechanical analysis; interfacial reaction; tensile strength; storage modulus

期刊名称：MICRO & NANO LETTERS （ 影响因子：1.102； 五年影响因子：1.04 ）

ISSN： 1750-0443

年卷期： 2018 年 13 卷 7 期

页码：

收录情况： SCI

摘要： Magneto-rheological elastomer (MRE) is a kind of smart material based on elastomer matrix and it is divided into isotropic (i-MRE) and anisotropic MRE (a-MRE) depending on the magnetic particle arrangement. In the i-MRE, carbonyl iron particles (CIP) are randomly dispersed, while they form a chain-like structure in the a-MRE. Two manufacturing procedures of a-MRE have been introduced. The a-MRE-1 was manufactured by one-step process involving application of magnetic field and curing of matrix simultaneously. On the other hand, a-MRE-2 was manufactured by two-step process in which the magnetic field was applied to induce CIP orientation and then the matrix was cured. The microstructure and mechanical properties of MRE were characterised by scanning electron microscope, universal testing machine and dynamic mechanical analysis. The results showed that the CIP content in MRE had no effect on the cure properties. A chain-like structure existed in a-MRE-1, whereas the orientation structure of CIP in the a-MRE-2 was not as clear as that in a-MRE-1. The tensile strength of a-MRE-1 was the lowest because no interfacial reaction occurred between the CIP and the rubber molecules chain, whereas i-MRE had the highest tensile strength.

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