Polymer Nanocomposites for Electromagnetic Interference Shielding: A Review

Ganguly, Sayan; Bhawal, Poushali; Ravindren, Revathy; Das, Narayan Chandra

doi:10.1166/jnn.2018.15828

Cited by 162 publications

(67 citation statements)

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“…[3,21] It is worth noticing that certain conductive materials are suitable for electromagnetic interference (EMI) shielding material, where the core process of EMI shielding is to produce a blockage made of electrically conductive materials that attenuates radiated or conducted EM energy through reflections and absorption. [22] Moreover, multifunctional electrical conductive carbon-based composite materials in various forms, also exhibited competitive performances, such as enhanced electrical conductivity and excellent EMI shielding capability. [23,24] For the complex permeability, fluctuations can be traced throughout the measured frequency range.…”

Section: Doi: 101002/gch2201900045mentioning

confidence: 99%

“…Thus, relatively higher electrical conductivity of CRH1500 permits strong polarization to take place, dissipation of electrostatic charges, Ohmic losses, or multiple scattering attributed to the heterogeneity and large specific area, which lead to improved complex permittivity . It is worth noticing that certain conductive materials are suitable for electromagnetic interference (EMI) shielding material, where the core process of EMI shielding is to produce a blockage made of electrically conductive materials that attenuates radiated or conducted EM energy through reflections and absorption . Moreover, multifunctional electrical conductive carbon‐based composite materials in various forms, also exhibited competitive performances, such as enhanced electrical conductivity and excellent EMI shielding capability .…”

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confidence: 99%

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Electromagnetic Wave Absorption Performance of Carbonized Rice Husk Obtained at Various Temperatures

Melvin

Wang

2019

Global Challenges

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Agricultural wastes such as rice husks (RHs) are valuable due to their feasibility to be converted into carbon materials, low cost, and abundancy in contrast to the conventional carbon material sources. In this study, RHs are carbonized at various temperatures from low to high temperatures, and their electromagnetic (EM) wave absorption properties are evaluated. Carbon materials, silicon carbide (SiC) whiskers, and SiC particles are obtained from RHs carbonized at 1500 °C (CRH1500) for 0.5 h with presence of Ar gas at 1 atm. In order to evaluate their EM wave absorption performance, complex permittivity and permeability are measured by using vector network analyzer, and the values are utilized in the reflection loss (R.L.) calculation according to the transmission line theory. CRH1500, 40 wt% with thickness of 1.6 mm exhibits minimum R.L. of ≈−55.4 dB (>99.9997% absorption) at 11.37 GHz and response bandwidth (R.L. < 10 dB, > 90% absorption) of 4.21 GHz. Low‐cost and abundant RHs, carbonized at various temperatures, show significant absorption performance. Their absorption performance and response bandwidth are highly dependent on matching thickness, indicating that they can be easily modulated for promising electromagnetic wave absorber materials.

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Section: Doi: 101002/gch2201900045mentioning

confidence: 99%

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confidence: 99%

Electromagnetic Wave Absorption Performance of Carbonized Rice Husk Obtained at Various Temperatures

Melvin

Wang

2019

Global Challenges

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“…For instance, the density of MoS 2 microspheres is 4.80 g cm −3 and the nickel microspheres is 8.90 g cm −3 , which are not suitable for light requirements. In this study, we fabricated a 3D architecture absorber using polymer polystyrene (PS) microspheres with MWNTs via self‐assembly of electrostatic adsorption . The mechanism of 3D architecture absorbers of MWNTs@PS for the enhancement of absorbing performance is illustrated in Figure .…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we fabricated a 3D architecture absorber using polymer polystyrene (PS) microspheres with MWNTs via self-assembly of electrostatic adsorption. [19][20][21] The mechanism of 3D architecture absorbers of MWNTs@PS for the enhancement of absorbing performance is illustrated in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional architecture of absorbers for enhancement of the absorbing properties of MWNTs

Zhang

et al. 2019

J of Applied Polymer Sci

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The microwave absorbers, which can attenuate and dissipate the incident electromagnetic wave, have attracted much more attentions due to their great potential applications in military stealth and civil healthcare. In this study, the three‐dimensional (3D) architecture absorber of multiwalled carbon nanotubes@polystyrene (MWNTs@PS) was designed and synthesized by the combination of PS microspheres with MWNTs via self‐assembly of electrostatic adsorption. The morphology and dispersity of absorbers were characterized via scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The aim of this study is to explore the influence of the 3D architecture of absorbers on the enhanced absorbing performance of MWNTs. The results of SEM and TEM demonstrated that 3D architecture constructed via MWNTs attaching on the surface of PS microspheres were established, which is in favor for MWNTs to build more electron transportation pathways and enhance the multiinterface polarization. Compared with one‐dimensional (1D) absorbers of PS/MWNTs, the 3D MWNTs@PS exhibited excellent absorbing properties, the maximum reflection loss (RL) was −34.2 dB at 10.6 GHz with a thickness of 2.00 mm and the frequency bandwidth of RL below −10 dB (90% absorption) was 3.0 GHz. In contrast, the maximum RL of 1D PS/MWNTs and pristine MWNTs were −19.1 dB at 11.5 GHz and −7.7 dB at 8.8 GHz, respectively. The results implied that the construction of 3D architecture has crucial influence on the enhanced absorbing performance of MWNTs. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47566.

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“…Metals can be the most effective shielding materials in this aspect except their limited flexibility, oxidation resistance, heavy weight, and high cost but elastomer composite are emerging in this field due to their high flexibility, aging resistance, lightweight and resistance to corrosion. Recently, extensive studies have been carried out on electromagnetic shielding based on various matrix like Poly anilene (PANI) , Ethylene methyl acrylate (EMA) , Chlorinated polyethene (CPE) , Poly (methyl methacrylate) (PMMA) , and Ethylene vinyl acetate (EVA) using different filler. In this article, we have mixed CR with graphene to enhance not only the mechanical property but also the EMI shielding property to impart their electromechanical application.…”

Section: Introductionmentioning

confidence: 99%

Graphene nanoplatelets in polychloroprene matrix: An insight to dispersion with a special emphasize to electro‐mechanical properties

2018

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This work is based on the preparation of graphene‐reinforced elastomeric nanocomposites and an investigation on their electro‐mechanical properties with a special emphasize to electromagnetic interference (EMI) shielding. Polychloroprene rubber (CR) and commercial grade graphene‐based nanocomposites (GnPs) were prepared by using melt mixing and dual mixing (solution followed by melt) technique to study an insight into the dispersion and its effect on various properties namely, mechanical, thermal, conductivity, and EMI shielding, and so on. Dual mixing technique offers better dispersion of graphene platelets compared with melt mixing technique. Therefore, higher filler‐filled nanocomposites were prepared only by using dual mixing technique. A 0.5 wt% GnP containing batches showed 23% improvement in mechanical property in dual mixing technique compared with the 6% in melt mixing technique. Apart from that, it has been observed that upto 5 wt% GnP containing batches the mechanical property was improved using dual mixing technique whereas the same is observed upto 3 wt% GnP containing batches in case of melt mixing technique. 10 wt% GnP‐based nanocomposites prepared by using dual mixing technique shows 23 dB EMI shielding for 2‐mm thick sheet compound. Maximum 26 dB EMI shielding was observed at 15 wt% GnP containing nanocomposites. POLYM. COMPOS., 40:E1871–E1883, 2019. © 2018 Society of Plastics Engineers

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Polymer Nanocomposites for Electromagnetic Interference Shielding: A Review

Cited by 162 publications

References 0 publications

Electromagnetic Wave Absorption Performance of Carbonized Rice Husk Obtained at Various Temperatures

Electromagnetic Wave Absorption Performance of Carbonized Rice Husk Obtained at Various Temperatures

Three‐dimensional architecture of absorbers for enhancement of the absorbing properties of MWNTs

Graphene nanoplatelets in polychloroprene matrix: An insight to dispersion with a special emphasize to electro‐mechanical properties

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