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首页> 外文期刊>RSC Advances >A carbon fiber based three-phase heterostructure composite CF/Co0.2Fe2.8O4/PANI as an efficient electromagnetic wave absorber in the K-u band
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A carbon fiber based three-phase heterostructure composite CF/Co0.2Fe2.8O4/PANI as an efficient electromagnetic wave absorber in the K-u band

机译：碳纤维基三相异质结构复合CF / Co0.2Fe2.8O4 / PANI作为K-u波段的高效电磁波吸收剂

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摘要

A three-phase heterostructure composite CF/Co0.2Fe2.8O4/PANI with a layer by layer (LBL) structure was designed and synthesized for achieving improvement in electromagnetic (EM) wave attenuation of carbon fiber (CF). The structure and morphology analyses demonstrated the LBL structure of the absorber. The electromagnetic parameters of the absorber and wax composite were measured at 2-18 GHz to evaluate its EM wave attenuation performance. The three-phase heterostructures absorber CF/Co0.2Fe2.8O4/PANI demonstrated the highest attenuation effectiveness value of -38.2 dB (>99.9% attenuation) at 12.7 GHz with a thickness of 4.1 mm. Moreover, for CF/Co0.2Fe2.8O4/PANI, with an absorber thickness of 3.1-4.1 mm, the minimum RL values are all lower than -20 dB in K-u band. The excellent EM wave absorbency in the K-u band for CF/Co0.2Fe2.8O4/PANI results from the combined effect of magnetic loss and dielectric loss by introducing more phase onto CF. Considering the EM wave absorption performance and the effortless fabrication process, it is believable that by introducing more specially designed phases, the EM wave attenuation performance of CF can be significantly improved.
机译：设计并合成了具有层层（LBL）结构的三相异质结构复合材料CF / Co0.2Fe2.8O4 / PANI，以改善碳纤维（CF）的电磁（EM）波衰减。结构和形态分析证明了吸收体的LBL结构。在2-18 GHz下测量吸收剂和蜡复合材料的电磁参数，以评估其EM波衰减性能。三相异质结构吸收剂CF / Co0.2Fe2.8O4 / PANI在12.7 GHz厚度为4.1 mm时显示出最高的衰减效率值-38.2 dB（衰减> 99.9％）。此外，对于CF / Co0.2Fe2.8O4 / PANI，吸收层厚度为3.1-4.1 mm，最小RL值在K-u波段均低于-20 dB。 CF / Co0.2Fe2.8O4 / PANI在K-u谱带中具有出色的EM波吸收能力，这是由于通过在CF上引入更多的相而产生的磁损耗和介电损耗的综合影响。考虑到电磁波吸收性能和轻松的制造工艺，可以相信，通过引入更多专门设计的相，可以显着提高CF的电磁波衰减性能。

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