The Properties of Epoxy Composites Containing Aligned Iron Oxide Nanorods by Low Magnetic Field

Abstract

Abstract. The magnetic iron oxide (Fe 2 O 3 ) nanorods were synthesized, and the epoxy resin (EP) composites with the content of 1wt% Fe 2 O 3 were prepared in the condition of magnetic field. X ray diffraction, scanning electron microscopy and comprehensive physical properties measurement system were used to characterize the composition, morphology and magnetic properties of the nanorods, respectively. The effects of a low magnetic field (≤0.06T) on fracture toughness, compressive strength and glass transition temperature of the composites were specifically investigated. The results show that the critical stress intensity factor, critical strain energy release rate and the compressive strength of Fe 2 O 3 /EP composites with magnetic field induction are 1.33 MPa·m 1/2 , 0.56 KJ/m 2 and 206.5MPa, which are increased by 7.3%, 27% and 15% compared to of EP effectively.