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Lee, B. O.; Woo, Won Jun; Park, H. S.; Hahm, Hyun Sik; Wu, Jong-Pyo; Kim, M. S.

doi:10.1023/a:1014970528482

Cited by 99 publications

(12 citation statements)

References 17 publications

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“…It is well-known that the intensity of the electromagnetic wave decreases exponentially when high-frequency electromagnetic wave penetrates the surface of the shielding material [53], which is denoted as a skin effect. Generally, skin depth is used to quantitatively describe…”

Section: Science China Materialsmentioning

confidence: 99%

Lightweight, flexible and freestanding PVA/PEDOT: PSS/Ag NWs film for high-performance electromagnetic interference shielding

Zhao

et al. 2021

Sci. China Mater.

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In order to fulfill the ever-growing requirements for electromagnetic interference (EMI) shielding materials, achieving a high efficiency with great flexibility is still a big challenge. Herein, high-performance EMI shielding composite films with excellent mechanical properties were fabricated via a convenient evaporation method using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and silver nanowires (Ag NWs) as conductive fillers. By adding 1.38 wt% Ag NWs into the original polyvinyl alcohol/PEDOT: PSS (PVA/PEDOT:PSS) composite, the obtained film with a thickness of about 20 µm shows a remarkable EMI shielding performance (~33 dB) and a special EMI shielding efficiency of 16,800 dB cm −1 at 10 GHz. Furthermore, PVA/PEDOT: PSS/Ag NWs films present excellent tensile strength (~62.39 MPa) and elongation at break (~29.3%). The good mechanism allows the films to apply in actual harsh environments. Overall, this study will draw attentions to the new films for electromagnetic shielding application.

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Section: Science China Materialsmentioning

confidence: 99%

Lightweight, flexible and freestanding PVA/PEDOT: PSS/Ag NWs film for high-performance electromagnetic interference shielding

Zhao

et al. 2021

Sci. China Mater.

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“…This might reduce the electrical conductivity of the final composites. 25 However, the solution mixing method produces better dispersion at a particularly lower concentration of fillers. 26 Therefore, this work outlines a dual mixing technique to combine the advantages of both techniques, that is, solution as well as melt mixing.…”

Section: Introductionmentioning

confidence: 99%

Excellent electromagnetic interference shielding and mechanical properties accomplished in a manganese dioxide decorated graphene/polymer composite

Pradhan

Goswami

Ghorai

et al. 2021

J of Applied Polymer Sci

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In this work, we have incorporated pristine graphene and graphene sheets decorated with α and δ forms of manganese dioxide in a hydrogenated nitrile butadiene rubber matrix to obtain high‐performance composites. The dual mixing technique was adopted to fabricate the composites having enhanced tensile, dielectric, and electromagnetic interference (EMI) shielding properties. The pristine graphene was introduced at various loadings, however, the α and δ manganese dioxide doped graphene was integrated at a single 8 phr concentration onto the rubber matrix. At an optimized concentration of 8 phr graphene in the matrix, a 101% increase in the tensile strength was observed compared to the unfilled rubber. An excellent improvement in the dielectric properties and a high EMI shielding value of 24.5 dB was observed for the15 phr loaded composite having a thickness of 2 mm. The composites should principally find applications as a robust and lightweight EMI shielding material.

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“…An abundance of EMI shielding materials and technologies have been synthesized and designed to reduce the interferences caused by electromagnetic signals, e.g., metal sheets [3], carbon materials [4,5,6,7,8,9,10,11,12,13], electroless plating [14], honeycomb design [1], and coating [15]. Three mechanisms of EMI shielding were investigated [16]: reflection, which involves the application of metal sheets; absorption mechanism, which happens in amorphous materials; and multiple reflections, which refer to the reflections at various surfaces or interfaces in the shield.…”

Section: Introductionmentioning

confidence: 99%

Scalable Fabrication of Natural-Fiber Reinforced Composites with Electromagnetic Interference Shielding Properties by Incorporating Powdered Activated Carbon

et al. 2015

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Kenaf fiber—polyester composites incorporated with powdered activated carbon (PAC) were prepared using the vacuum-assisted resin transfer molding (VARTM) process. The product demonstrates the electromagnetic interference (EMI) shielding function. The kenaf fibers were retted in a pressured reactor to remove the lignin and extractives in the fiber. The PAC was loaded into the freshly retted fibers in water. The PAC loading effectiveness was determined using the Brunauer-Emmett-Teller (BET) specific surface area analysis. A higher BET value was obtained with a higher PAC loading. The transmission energies of the composites were measured by exposing the samples to the irradiation of electromagnetic waves with a variable frequency from 8 GHz to 12 GHz. As the PAC content increased from 0% to 10.0%, 20.5% and 28.9%, the EMI shielding effectiveness increased from 41.4% to 76.0%, 87.9% and 93.0%, respectively. Additionally, the EMI absorption increased from 21.2% to 31.7%, 44.7% and 64.0%, respectively. The ratio of EMI absorption/shielding of the composite at 28.9% of PAC loading was increased significantly by 37.1% as compared with the control sample. It was indicated that the incorporation of PAC into the composites was very effective for absorbing electromagnetic waves, which resulted in a decrease in secondary electromagnetic pollution.

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Untitled

Cited by 99 publications

References 17 publications

Lightweight, flexible and freestanding PVA/PEDOT: PSS/Ag NWs film for high-performance electromagnetic interference shielding

Lightweight, flexible and freestanding PVA/PEDOT: PSS/Ag NWs film for high-performance electromagnetic interference shielding

Excellent electromagnetic interference shielding and mechanical properties accomplished in a manganese dioxide decorated graphene/polymer composite

Scalable Fabrication of Natural-Fiber Reinforced Composites with Electromagnetic Interference Shielding Properties by Incorporating Powdered Activated Carbon

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