286131 Magnetic Epoxy-Magnetite Nanocomposites
Magnetic Epoxy-Magnetite Nanocomposites
Hongbo Gu, Yudong Huang, Suying Wei and Zhanhu Guo
Magnetic epoxy resin nanocomposites reinforced with magnetite (Fe3O4) nanoparticles (NPs) have been prepared with different nanofiller loading levels. The surface functionality of the NPs was tuned by the introduced conductive polyaniline (PANI) via surface initiated polymerization (SIP) method. The rheological behaviors of the epoxy resin suspended with different NP loadings were systemically investigated. The thermo-stability of these cured epoxy nanocomposites was studied by thermogravimetric analysis (TGA). The fracture surface was characterized by scanning electron microscope (SEM). The mechanical properties were tested including tensile test and dynamic mechanical analysis (DMA). The enhanced mechanical properties of the epoxy nanocomposites filled with the functionalized NPs were observed in the tensile test compared with the pure epoxy and its nanocomposites filled with as-received NPs. The glass transition temperature (Tg) obtained from dynamic mechanical analysis (DMA) and the magnetic properties were studied and will be reported in this talk.