In this work, graphene aerogels (GAs) with three-dimensional interconnected networks were prepared by chemical reduction and self-assembly of graphene oxide sheets. After microwave treatment, obtained microwave reduced graphene aerogels (MRGAs) were used in the preparation of bismaleimide (BMI) composites. The results show that the microwave treatment significantly enhanced the quality of GAs, and the three-dimensional networks in the GAs were well retained. Moreover, the MRGAs were highly efficient in endowing BMI with high electrical conductivity and excellent electromagnetic interference shielding effectiveness (EMI SE). The conductivity of MRGA/BMI composites was 42–68% higher than that of GA/BMI composites. When the filler content is 1.6 wt.%, the EMI SE of MRGA/BMI composite was 32.3% higher than that of GA/BMI composite in the X band.

中文翻译：

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石墨烯气凝胶的微波辐照及其在BMI纳米复合材料电磁干扰屏蔽中的应用

在这项工作中，通过氧化石墨烯片的化学还原和自组装制备了具有三维互连网络的石墨烯气凝胶（GAs）。微波处理后，获得的微波还原石墨烯气凝胶（MRGAs）用于制备双马来酰亚胺（BMI）复合材料。结果表明，微波处理显着提高了遗传算法的质量，遗传算法中的三维网络得到了很好的保留。此外，MRGAs高效地赋予BMI高导电性和优异的电磁干扰屏蔽效果（EMI SE）。MRGA/BMI 复合材料的电导率比 GA/BMI 复合材料高 42-68%。当填料含量为 1.6 wt.% 时，MRGA/BMI 复合材料的 EMI SE 在 X 波段比 GA/BMI 复合材料高 32.3%。