Hybrid composites of poly(methyl methacrylate) (PMMA) and polyvinyl chloride (PVC) with multilayered graphene/iron oxide (MLG/Fe₃O₄) were prepared by solution casting. Tensile and viscoelastic characteristics of the hybrid nanocomposites were studied in comparison with the corresponding pure polymer and polymer/MLG composite. Increase in Fe₃O₄ content in the hybrid composites reduces their electrical conductivity and thermal stability. The hybrid composite films were hot stacked to get a 2-mm-thick multilayered sandwich structure and tested for their X-band microwave absorption characteristics. The decrease in electrical conductivity resulted in lower overall shielding effectiveness of the hybrid composites. Hybrid composites with 2.5 wt.% Fe₃O₄ exhibited satisfactory electromagnetic interference (EMI) shielding effectiveness at par with the polymer/MLG composites. The hybrid nanocomposites had a significantly higher influence of absorption in the overall shielding effectiveness when compared to the respective polymer/MLG composites. Both PMMA-based and PVC-based graphene/Fe₃O₄ hybrid nanocomposites with proper filler contents are found suitable␣for EMI shielding solutions with higher absorption requirements.

通过溶液流延制备了聚甲基丙烯酸甲酯（PMMA）和聚氯乙烯（PVC）与多层石墨烯/氧化铁（MLG / Fe ₃ O ₄）的杂化复合材料。与相应的纯聚合物和聚合物/ MLG复合材料相比，研究了杂化纳米复合材料的拉伸和粘弹性特性。Fe ₃ O _4的增加杂化复合物中的含量降低了它们的电导率和热稳定性。将杂化复合膜热堆叠以获得2mm厚的多层夹心结构，并测试其X波段微波吸收特性。电导率的降低导致杂化复合材料的总体屏蔽效果降低。与聚合物/ MLG复合材料相比，具有2.5 wt。％Fe ₃ O _4的杂化复合材料表现出令人满意的电磁干扰（EMI）屏蔽效果。与相应的聚合物/ MLG复合材料相比，杂化纳米复合材料在总体屏蔽效果方面具有吸收的明显更高的影响。PMMA基和PVC基石墨烯/ Fe ₃ O ₄ 已发现具有适当填料含量的杂化纳米复合材料适用于具有更高吸收要求的EMI屏蔽解决方案。