Electromagnetic interference shielding effectiveness of ferrocene‐based polyimidazole/carbon material composites

Nazir, Ahsan; Yu, Haipeng; Liu, Jinhua; Li, Songbiao; Amin, Bilal Ul; Naveed, Kaleem‐ur‐Rahman; Khan, Rizwan Ullah; Khan, Amin; Usman, Muhammad; Elshaarani, Tarig; Uddin, Md Alim

doi:10.1002/pc.25521

Cited by 17 publications

(12 citation statements)

References 76 publications

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“…Conductive polymers, including polypyrrole, polythiophene and polyaniline,also draw an increasing research attention in the field of microwave absorption due to their excellent electrical conductivity [ 10 , 159 , 160 ]. For example, Sun and co -workers prepared a chain-like polypyrrole (PPy) aerogel ornamented with ZIF-67-derived Co/C composites (Co/C@PPy aerogel) using the self-assembled polymerization method [ 161 ].…”

Section: Mams Derived From Mof Compositesmentioning

confidence: 99%

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

et al. 2022

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Microwave has been widely used in many fields, including communication, medical treatment and military industry; however, the corresponding generated radiations have been novel hazardous sources of pollution threating human’s daily life. Therefore, designing high-performance microwave absorption materials (MAMs) has become an indispensable requirement. Recently, metal–organic frameworks (MOFs) have been considered as one of the most ideal precursor candidates of MAMs because of their tunable structure, high porosity and large specific surface area. Usually, MOF-derived MAMs exhibit excellent electrical conductivity, good magnetism and sufficient defects and interfaces, providing obvious merits in both impedance matching and microwave loss. In this review, the recent research progresses on MOF-derived MAMs were profoundly reviewed, including the categories of MOFs and MOF composites precursors, design principles, preparation methods and the relationship between mechanisms of microwave absorption and microstructures of MAMs. Finally, the current challenges and prospects for future opportunities of MOF-derived MAMs are also discussed."Image missing"

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Section: Mams Derived From Mof Compositesmentioning

confidence: 99%

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

et al. 2022

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“…Carbon nanomaterials have been frequently used as conductive fillers in multi‐scale composites thanks to their remarkable properties. [ 17 ] In previous studies, the EMSE performance of carbon nanomaterials reinforced nanocomposites has been classified as multi‐walled carbon nanotube (MWCNT) > CNF > CB depending on the constituent fillers. [ 18 ] Because of their higher aspect ratio and conductivity, CNTs are a highly suitable option for use in a composite with strong electromagnetic shielding capability.…”

Section: Introductionmentioning

confidence: 99%

Multi‐walled carbon nanotube grafted 3D spacer multi‐scale composites for electromagnetic interference shielding

et al. 2022

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The development of structural fiber reinforced polymer composites with various additional functionalities is becoming a hot research area to achieve the application of multi‐functional composites in the aerospace and automotive industries. An innovative material solution is 3D spacer composites with distinctive anisotropic structural characteristics. Herein, we report the manufacturing of multi‐walled carbon nanotubes (MWCNTs) grafted of 3D spacer glass/epoxy multi‐scale composites and their electromagnetic interference shielding efficiencies (EMSE). To manufacture multi‐scale composites, we utilized dip coating, vacuum filtering, and vacuum infusion methods to introduce MWCNTs of the woven fabric, while we also modified the epoxy resin with MWCNTs to increase electrical conductivity of intrinsic insulator epoxy resin. Owing to the rectangular‐shaped channel structure, which is beneficial for multiple reflection and scattering between top and bottom face sheets, the resultant 3D spacer multi‐scale composite represented a good EMSE performance of −18.3 dB in the frequency range of 8.2–12.4 GHz with an increase of 107% comparing the corresponding neat composite counterpart. Moreover, we measured the in‐plane conductivity as 1.89E‐2 S/m after MWCNTs grafting, while the out‐of‐plane conductivity remained three times lower than the in‐plane conductivity. Dynamic mechanical analysis revealed that the storage modulus increased almost three times with the MWCNTs grafting, while glass transition temperature shifted to higher temperatures (from 77.5 to 89.7°C). Therefore, we anticipate that our study will expand the use of 3D spacer composites in the aviation and automotive industries.

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Section: Introductionmentioning

confidence: 99%

“…SE E and SE M are described by the following equations [ 11–15 ] :

{SE}_{E} = 20 \log_{10} \frac{E_{normali}}{E_{normalt}}

{SE}_{M} = 20 \log_{10} \frac{H_{normali}}{H_{normalt}}

where E i and H i are the electric and magnetic field that are incident to the hybrid polymer composite, and E t and H t are the electric and magnetic field that are transmitted by the mixture.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the attenuation of external EMW can be divided in three mechanisms including the reflection, absorption mechanism of energy inside the shield, [10] and multiple internal reflections of waves. [11][12][13][14] In many studies, the EMI shielding characteristic of conducting composites [15] were estimated in far-field region, SE of electric field (SE E ) will be equal to SE of magnetic field (SE M ). SE E and SE M are described by the following equations [11][12][13][14][15] :…”

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Electromagnetic shielding effectiveness improvement with high temperature in far‐field behavior multiwall carbon nanotube/iron (III) particles addition in composites

et al. 2020

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The hybrid polymer composite (HPMC) are increasingly used in the most shielding applications in the far field region, but the main problem is these HPMC should be having a good shielding efficiency and works at high temperature. The purpose of this research study was to prepare a high stable microwave shielding hybrid polymer composite for incremental temperature implementations with surface modified MWCNTs and Fe2O3 filled contents. In this paper, the kenaf fiber, Iron (III) oxide and MWCNTs particles were surface‐treated by APTMS for effective dispersion and adhesion on epoxy matrix medium. The morphology of the obtained shields was investigated by scanning electron microscopy. Thus, additions of MWCNTs and Iron (III) oxide particles increase the magnetic permeability and electrical permittivity of epoxy polymer matrix at high temperature (25°C‐100°C‐200°C). The kenaf fibers increase the mechanical properties such as the flexural, tensile. The principal advantages of these compositions are its low cost and its higher electrical conductivity which make it a suitable material as shielding material against electromagnetic field at high temperature. For electromagnetic compatibility in the far‐field regions, the adequate SE in the frequency range of 2 to 18 GHz of the epoxy polymer matrix‐kenaf fiber conducting composites was obtained by adding the MWCNT and Fe2O3 particles.

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Electromagnetic interference shielding effectiveness of ferrocene‐based polyimidazole/carbon material composites

Cited by 17 publications

References 76 publications

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

Multi‐walled carbon nanotube grafted 3D spacer multi‐scale composites for electromagnetic interference shielding

Electromagnetic shielding effectiveness improvement with high temperature in far‐field behavior multiwall carbon nanotube/iron (III) particles addition in composites

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