Hybrid polymer composites for electromagnetic absorption in electronic industry

Stergiou, Charalampos A.; Koledintseva, Marina Y.; Rozanov, Konstantin N.

doi:10.1016/b978-0-08-100785-3.00003-6

Cited by 15 publications

(2 citation statements)

References 128 publications

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“…Polymer-based composites could meet all these requirements [15][16][17]. For military applications, MA materials can be used in various forms such as paints [18] and composites for reducing the radar cross-section [19] of various strategic targets such as aircraft, missiles, etc. [20].…”

Section: Introductionmentioning

confidence: 99%

Epoxy Coatings Containing Modified Graphene for Electromagnetic Shielding

et al. 2022

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This study presents the functionalization and characterization of graphene and electromagnetic interference (EMI) attenuation capacity in epoxy-nanocomposites. The modification of graphene involved both small molecules and polymers for compatibilization with epoxy resin components to provide EMI shielding. The TGA and RAMAN analyses confirmed the synthesis of graphene with a different layer thickness of the graphene sheets. Graphene samples with different layer thicknesses (monolayer, few layers, and multilayer) were selected and further employed for epoxy coating formulation. The obtained nanocomposites were characterized in terms of EMI shielding effectiveness, SEM, micro-CT, magnetic properties, and stress-strain resistance. The EMI shielding effectiveness results indicated that the unmodified graphene and hexamethylene diamine (HMDA) modified graphene displayed the best EMI shielding properties at 11 GHz. However, the epoxy nanocomposites based on HMDA modified graphene displayed better flexibility with an identical EMI shielding effectiveness compared to the unmodified graphene despite the formation of aggregates. The improved flexibility of the epoxy nanocomposites and EMI shielding characteristics of HMDA functionalized graphene offers a practical solution for textile coatings with microwave absorbing (MA) capacity.

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Section: Introductionmentioning

confidence: 99%

Epoxy Coatings Containing Modified Graphene for Electromagnetic Shielding

et al. 2022

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“…Digital Object Identifier 10.1109/TEMC.2021.3133665 compromise equipment performance and electronic basic functions, leading to lifetime reduction and loss of energy and data degradation in signals and storage devices [2]. For instance, undesired EM radiation can be deleterious to aviation safety by interfering with air traffic control systems and affecting the signal quality in communication devices [3]- [5]. Hence, EM absorption is becoming of primary interest and the development of new absorbers is currently one of the major research topics.…”

Section: Introductionmentioning

confidence: 99%

Graphene Based Wideband Electromagnetic Absorbing Textiles at Microwave Bands

D’Aloia

Bidsorkhi

Bellis

et al. 2022

IEEE Trans. Electromagn. Compat.

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The design and realization of graphene based wideband electromagnetic (EM) absorbing textiles are becoming of primary interest. Hence, the development of new conductive coatings to be cast onto commercial textiles is crucial. In this article, we propose new graphene based absorbing textiles that conjugate outstanding EM absorbing properties at radiofrequency with low-weight, flexibility, cost-effectiveness, and washability. With this purpose, an innovative production process of polyvinylidene fluoride (PVDF) coatings filled with graphene nanoplatelets (GNPs) is developed for the production of radar-absorbing coated textiles, which are fully characterized in terms of morphological, electrical, and EM absorbing properties. In particular, the complex dielectric permittivity of the coated textiles including different amounts of GNPs is assessed through the measurement of the complex permittivity of a benchmark sample, the consequent estimation of the average GNP size and the prediction by simulations of the effective complex permittivity of graphene based coatings loaded with different GNP amounts. Such predicted data are crucial to design radar absorbing textiles with minimum bandwidths at −10 dB of 5 GHz and reflection coefficients below −5 dB over all the frequency range from 8 up to 18 GHz. These textiles are then produced and characterized in terms of reflection coefficient in free space against a plane wave with normal incidence. The obtained results demonstrate the full satisfaction of the design requirements. In fact, the produced samples show a reflection coefficient with a bandwidth at −10 dB up to 77% of the resonant frequency.

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Electromagnetic Interference Suppression and Electromagnetic Absorption

Koledintseva¹,

Rozanov²

2022

Modern Ferrites

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Hybrid polymer composites for electromagnetic absorption in electronic industry

Cited by 15 publications

References 128 publications

Epoxy Coatings Containing Modified Graphene for Electromagnetic Shielding

Epoxy Coatings Containing Modified Graphene for Electromagnetic Shielding

Graphene Based Wideband Electromagnetic Absorbing Textiles at Microwave Bands

Electromagnetic Interference Suppression and Electromagnetic Absorption

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