Processing of SmFeO/poly(CNIn) nanocomposite: From preparation to microwave absorption and shielding performance

Wei, Yonghui; Fouad, Yasser; Hermawan, Indra; Hassan, Ali; Abdalmonem, Ahmed; Abouelela, Mohamed

doi:10.1016/j.colsurfa.2023.132082

Cited by 11 publications

(1 citation statement)

References 30 publications

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“…Another EOG/CIP composite with 0.5 wt.% EOG and 72 wt.% CIP and a thickness of 1.33 mm reached an RL min of −69.27 dB at 15 GHz with an EAB of 6.47 GHz. Furthermore, CIP and other nanomaterials have been incorporated into special three-dimensional structures, such as gradient structures, honeycomb structures, topological structures, foam structures, multilayer structures, biomimetic structures, and vertically oriented structures, to enhance electromagnetic absorption performance [16][17][18][19][20][21][22][23][24][25][26][27][28]. Honeycomb structure absorbing composites are a significant research focus in this regard.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Electromagnetic Wave Absorption Performance of Carbonyl Iron Powder-Modified Nonwoven Materials

Gu,

Shi,

Pang

et al. 2023

Materials

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In order to develop carbonyl iron-enhanced electromagnetic wave-absorbing composites, this paper utilizes two different morphologies of carbonyl iron powder (CIP), spherical and flake-like, which are blended with aqueous polyurethane (PU) in three different ratios to prepare impregnating solutions. Polyester (PET) needle-punched nonwoven materials are impregnated with these solutions to produce electromagnetic wave-absorbing composites. First, electromagnetic parameters of the two CIP particle types, spherical carbonyl iron (SCIP) and flake-like carbonyl iron (FCIP), are tested with the coaxial method, followed by calculation of the results of their electromagnetic wave absorption performance. Next, the composites are subjected to microscopic morphology observation, tensile testing, and arched frame method electromagnetic wave absorption performance testing. The results indicate that the microwave absorption performance of FCIP is significantly better than that of SCIP. The minimum reflection loss value for F3, a kind of FCIP-modified nonwoven fabric, at the thickness of 1 mm, at 18 GHz is −17 dB. This value is even better than the calculated RL value of CIP at the thickness of 1 mm. The anisotropic shape of flake-like magnetic materials is further strengthened when adhering to the surface of PET fiber material. Additionally, the modified composites with carbonyl iron exhibit higher tensile strength compared with pure PET. The addition of fibrous skeletal materials is expected to enhance the impedance matching of flake-like magnetic particles, forming a wearable and microwave-absorbing composite.

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