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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.6Fe2O3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。
NBR / Fe3O4 composites and NBR / SrO.6Fe2O3 composites were prepared from NBR, nano-Fe3O4 and nano-SrO.6Fe2O3. The changes of the physical and mechanical properties, the magnetic properties and the distribution of nanoparticles in the composites at different nanoparticle contents were studied. The results show that with the continuous addition of nanoparticles, the tensile strength, the 300% modulus and the elongation at break of the composites decrease continuously, but the hardness and Mooney viscosity increase continuously. Addition of nanoparticles in the NBR matrix distribution is more uniform. With the increase of nano-Fe3O4 particles and nano-SrO.6Fe2O3 content, the magnetic properties of the composites are continuously improved. Both composite materials have good soft magnetic properties, which laid the foundation for the further application of such composite materials.