The NBR/Fe3O4 composites and NBR/SrO · 6Fe2O3 composites were prepared with NBR, nano-Fe3O4 and nano-SrO· 6Fe2O3 as raw material. Magnetic properties and mechanical properties of the two composites were studied. The distribution of nano-particles were also analyzed. The results show that when adding different mass fraction of nano-particles, maximum elongation, 300％ stress at definite elongation and tensile strength of the two composites are decreased. Whereas shore A hardness and mooney viscosity of the two composites are improved. Nano-particles are well distributed in the two composites. Magnetic properties of two composites are closely related with mass fraction of nano-particles. Also, both the two composites have good soft magnetism properties, which lay the foundation for further applications of this kind of composites.%以NBR、纳米Fe3O4和纳米SrO·6Fe2O3为原料制备了NBR/Fe3O4复合材料与NBR/SrO·6Fe3O4复合材料.研究了不同纳米粒子含量时,两种复合材料中的物理机械性能变化、磁学性能以及复合材料中的纳米粒子分布.结果表明:随着纳米粒子的不断加入,复合材料的抗拉强度、300%定伸应力与扯断伸长率不断下降,但是硬度与门尼黏度不断提高.加入的纳米粒子在NBR基体中分布较为均匀.随着纳米Fe3O4粒子和纳米SrO·6Fe2O3含量的加大,复合材料的磁性能不断得到提高.两种复合材料均具有较好软磁性能,为该类复合材料的进一步应用奠定了基础.
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