In this work, the electromagnetic interference shielding effectiveness (EMI-SE) of the poly(ether-ketone) (PEK)-graphene nanoplatelets (GNP) nanocomposites fabricated by planetary ball mill followed by hot pressing were investigated in X-band (8.2–12.4 GHz). A percolation threshold of about 0.4 vol% GNP was obtained. The electrical conductivity was increased to about 0.02 S/cm with an EMI-SE of ~33 dB for 1 mm thick 5 vol% GNP filled PEK nanocomposite. This higher value is corresponding to more than 99.95% blocking of the EMI. The EMI-SE increases with increasing thickness of the nanocomposite. The thermal stability and the char yield of the nanocomposites reinforced with 5 vol% GNP were found to increase to 570 °C and to 61.6%, respectively. The dimensional stability of the nanocomposites was also increased compared to neat PEK.

在这项工作中，研究了在X波段（8.2–2）上通过行星式球磨机制造的聚醚醚酮（PEK）-石墨烯纳米片（GNP）纳米复合材料的电磁干扰屏蔽效果（EMI-SE）。 12.4 GHz）。获得约0.4vol％GNP的渗透阈值。对于1毫米厚的5体积％GNP填充的PEK纳米复合材料，电导率增加到约0.02 S / cm，EMI-SE为〜33 dB。这个较高的值对应于超过99.95％的EMI阻塞。EMI-SE随着纳米复合材料厚度的增加而增加。发现用5体积％的GNP增强的纳米复合材料的热稳定性和炭产率分别增加至570℃和61.6％。与纯PEK相比，纳米复合材料的尺寸稳定性也有所提高。