Understanding the reinforcing behaviors of polyaniline-modified carbonyl iron particles in magnetorheological elastomer based on polyurethane/epoxy resin IPNs matrix. (8th February 2017)

• Record Type: Journal Article
• Authors: Yu, Miao; Qi, Song; Fu, Jie; Zhu, Mi; Chen, Dong
• Is Part Of: Composites science and technology. Volume 139(2017)
• Page Start: 36
• Page End: 46
• Publication Date: 2017-02-08
• Subjects: Magnetorheological elastomers -- Polyaniline -- Interpenetrating polymer network -- Surface modification -- Payne effect; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2016.12.010
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: 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.