Understanding the reinforcing behaviors of polyaniline-modified carbonyl iron particles in magnetorheological elastomer based on polyurethane/epoxy resin IPNs matrix

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• 作者：Miao Yu ; ^{yumiao@cqu.edu.cn} ; Song Qi ; Jie Fu ; Mi Zhu ; Dong Chen
• 关键词：Magnetorheological elastomers ; Polyaniline ; Interpenetrating polymer network ; Surface modification ; Payne effect
• 刊名：Composites Science and Technology
• 出版年：2017
• 出版时间：8 February 2017
• 年：2017
• 卷：139
• 期：Complete
• 页码：36-46
• 全文大小：2698 K
• 卷排序：139

文摘

In this study, in order to improve the interface between the carbonyl iron particles (CIPs) and polyurethane/epoxy resin IPNs matrix, we prepared a novel magnetorheological elastomer (MRE) containing polyaniline (PANI)-modified CIPs. Particles characterization results illustrate the changes of morphology, surface functional property, magnetic property and surface absorption behavior between the pure CIPs and PANI-modified CIPs. Scanning electron microscopy (SEM) analysis shows enhanced interfacial interaction of MRE. The test results of rheometer indicate that the MRE sample with PANI-modified CIPs exhibit larger storage modulus, smaller loss factor, and lower magnitude of Payne effect. The results also revealed that the MR performances, including the field-induced storage modulus and the storage modulus sensitivity, have also been promoted by improving the interfacial interaction between the CIPs and matrix. In addition, a modified phenomenological model is adopted to determine the influencing mechanism of Payne effect. The influences of interfacial interactions and magnetic field on the quantitative fitting parameters are discussed, and a relevant physical mechanism is proposed to qualitatively explain the mechanism.