To protect against the adverse effects of electromagnetic (EM) radiation in the range of radio- to micro-waves, we have developed new polymer-based nanocomposites consisting of high dielectric, magnetic, and conducting columns. We have optimized the synthesis of γ-Fe₂O₃ and ZnO in different potential matrices such as multiwall carbon nanotubes (MWCNT) and graphene oxide (GO), termed as FZ@MWCNT and FZ@MWCNT-GO. Saturation magnetization, coercive field and MT curve suggest the mixture of superparamagnetic and ferrimagnetic nanoparticles blocked at room temperature. The electromagnetic attenuation of these composites containing 60 wt% with paraffin wax shows a significant improvement in the maximum shielding efficiency of 56.7 dB, making FZ@MWCNT and FZ@MWCNT-GO very good candidates for electromagnetic shielding. In addition, the extra-ordinary enhancement of absorption is attributed to the synergistic effect of dielectric losses due to conductivity, interfacial polarization as well as magnetic losses due to magnetic resonances and eddy current impact.

为了防止电磁波在无线电波到微波范围内的不利影响，我们开发了新的基于聚合物的纳米复合材料，该复合材料由高介电常数，磁性和导电性柱组成。我们优化的合成了γ-Fe ₂ ö ₃ZnO在不同的潜在基质中，例如多壁碳纳米管（MWCNT）和氧化石墨烯（GO），分别称为FZ @ MWCNT和FZ @ MWCNT-GO。饱和磁化强度，矫顽力场和MT曲线表明在室温下受阻的超顺磁性和亚铁磁性纳米粒子的混合物。这些包含60 wt％的石蜡的复合材料的电磁衰减显示最大屏蔽效率为56.7 dB的显着提高，使得FZ @ MWCNT和FZ @ MWCNT-GO非常适合用作电磁屏蔽。另外，吸收的非同寻常的增强归因于由于电导率，界面极化以及由于磁共振和涡流冲击引起的磁损耗引起的介电损耗的协同效应。