An ultra-thin carbon-fabric/graphene/poly(vinylidene fluoride) film for enhanced electromagnetic interference shielding

Mei, Xiaokang; Lu, Longsheng; Xie, Yingxi; Wang, Wentao; Tang, Yong; Teh, Kwok Siong

doi:10.1039/c9nr03603b

Cited by 66 publications

(37 citation statements)

References 63 publications

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“…The value of R is remarkably higher than that of A , and the value of T can be negligible, which indicates that the actual shielding mechanism for CF fabric/TPU composite in the frequency range of 8.2–12.4 GHz is dominated by reflection. [ 54 ] Since reflection occurs before absorption, most of the incident waves (as absolute values) are reflected. Electromagnetic reflection usually occurs at the corresponding interface, and the enhancement effect of electromagnetic reflection becomes obvious with the increase of interface area.…”

Section: Resultsmentioning

confidence: 99%

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Duan

Shi

Wang

et al. 2020

Macro Materials & Eng

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Electromagnetic shielding materials play a significant role in solving the increasing environmental problem of electromagnetic pollutions. The commonly used metal‐based electromagnetic materials suffer from high density, poor corrosion resistance, and high processing cost. Polymer composites exhibit unique combined properties of lightweight, good shock absorption, and corrosion resistance. In this study, a novel high angle sensitive composite is fabricated by combining carbon fiber (CF) fabric with thermoplastic polyurethane elastomer (TPU). The effect of stacking angle of CF fabric on EMI shielding performance of composite is studied. When the stacking angle of CF fabric changed, the electromagnetic interference (EMI) shielding effectiveness (SE) of CF fabric/TPU composite can reach a maximum of 73 dB, and the tensile strength can reach 168 MPa. In addition, the composite has anisotropic conductivity, which is conductive along the plane direction and nonconductive along the thickness direction. Moreover, the CF fabric/TPU composite manifests exceptional EMI‐SE/density/thickness value of 383 dB cm2 g−1, which is higher than most of current EMI shielding composites reported in literature. In summary, CF fabric/TPU composite is an excellent EMI shielding material that is lightweight, highly flexible, and mechanically robust, which can be applied to the field of aerospace and some intelligent electronic devices.

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Section: Resultsmentioning

confidence: 99%

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Duan

Shi

Wang

et al. 2020

Macro Materials & Eng

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“…The multireflection of EM waves between the Co/C nanocomposites could lead to continuous magnetic loss. The magnetic loss can efficiently enhance EM energy dissipation, increasing EMI shielding ability . The last rGO layer with stacked laminated structure play as the last ditch to further prevent the residuary EM waves pass through.…”

Section: Resultsmentioning

confidence: 99%

Flexible Composite Carbon Films Prepared by a Pancake‐Making Method for Electromagnetic Interference Shielding

Yang

Wei

et al. 2020

Adv Materials Inter

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resistance of carbon materials are perfect choices for electromagnetic interferences (EMI) shielding materials. [11][12][13][14] Therefore, flexible and preservative carbon films with excellent EMI shielding performance have been considered as promising substitutes for traditional metallic films.Carbon nanofibers and flexible graphite were employed to construct high-performance EMI shielding films at the early stage. [15] The EMI SE of flexible graphite can reach 130 dB at 1 GHz, [16] which is superior to almost all EMI shielding materials. Cao and co-workers prepared a flexible and lightweight (density < 0.1 g cm −3 )

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“…During evaporation, the mixture should be transferred to a new container in time to avoid the difference in moisture between upper and lower layers, which may cause the upper and lower layers to contract and expand at different degrees, resulting in the final film wrinkling. Finally, an ultra-thin CFG film can be taken off from the polyimide film [ 17 ].…”

Section: Methodsmentioning

confidence: 99%

A Carbon Composite Film with Three-Dimensional Reticular Structure for Electromagnetic Interference Shielding and Electro-Photo-Thermal Conversion

et al. 2021

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The design of flexible wearable electronic devices that can shield electromagnetic waves and work in all weather conditions remains a challenge. We present in this work a low-cost technology to prepare an ultra-thin carbon fabric–graphene (CFG) composite film with outstanding electromagnetic interference shielding effectiveness (EMI SE) and electro-photo-thermal effect. The compatibility between flexible carbon fabric skeleton and brittle pure graphene matrix empowers this CFG film with adequate flexibility. The reticular fibers and porous structures play a vital role in multiple scattering and absorption of electromagnetic waves. In the frequency range of 30–1500 MHz, the CFG film can achieve a significantly high EMI SE of about 46 dB at tiny thickness (0.182 mm) and density (1.4 g cm−3) predominantly by absorption. At low safe voltages or only in sunlight, the film can self-heat to its saturation value rapidly in 40 s. Once the electricity or light supply is stopped, it can quickly dissipate heat in tens of seconds. A combination of the EMI SE and the prominent electro-photo-thermal effect further enables such a remarkable EMI shielding film to have more potential applications for communication devices in extreme zones.

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An ultra-thin carbon-fabric/graphene/poly(vinylidene fluoride) film for enhanced electromagnetic interference shielding

Abstract: A carbon-fabric/graphene/poly(vinylidene fluoride) film that is light weight, highly flexible, and mechanically robust with outstanding electromagnetic shielding properties and thermal conductivity.

Cited by 66 publications

References 63 publications

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Strong and Flexible Carbon Fiber Fabric Reinforced Thermoplastic Polyurethane Composites for High‐Performance EMI Shielding Applications

Flexible Composite Carbon Films Prepared by a Pancake‐Making Method for Electromagnetic Interference Shielding

A Carbon Composite Film with Three-Dimensional Reticular Structure for Electromagnetic Interference Shielding and Electro-Photo-Thermal Conversion

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