Study on Magnetic and Physical Mechanical Properties of NBR Composites Filled with Nano-Sro.6Fe2O3

In this study, we used nano-SrO 6Fe2O3 particles as modified filler to prepare nitrile butadiene rubber/SrO 6Fe2O3 composites. Surface microstructure of the composites was observed using scanning electron microscope, the distribution of nano-SrO 6Fe2O3 particles was measured by energy-dispersive X-ray spectrometer, and magnetic properties of the composites were tested by a U5-10 magnetizer. The results showed that nano-SrO 6Fe2O3 particles were closely inosculated with nitrile butadiene rubber and well distributed in the nitrile butadiene rubber matrix. With adding different mass fractions of nano-SrO 6Fe2O3, stress at 300% definite elongation, maximum elongation, and tensile strength of the composites were slightly decreased, but shore A hardness of the composites was markedly improved. Magnetic properties of the composites were uncorrelated to the degree of scatter of nano-SrO 6Fe2O3 particles, and relied only on mass fraction of nano-SrO 6Fe2O3 particles. The nitrile butadiene rubber/SrO 6Fe2O3 composites have good soft magnetism performance, which laid the foundation for further application of the composites. *Author to whom correspondence should be addressed. E-mail: wangqilei500@yahoo.com.cn JOURNAL OF ELASTOMERS AND PLASTICS Vol. 43–May 2011 275 0095-2443/11/03 0275–10 $10.00/0 DOI: 10.1177/0095244310393928 The Author(s), 2011. Reprints and permissions: http://www.sagepub.co.uk/journalsPermissions.nav