Electromagnetic properties of graphene nanoplatelets/epoxy composites

Plyushch, Artyom; Macutkevič, J.; Kuzhir, P.; Banys, J.; Bychanok, D.; Lambin, Philippe; Bistarelli, Silvia; Cataldo, Antonino; Micciulla, F.; Bellucci, Stefano

doi:10.1016/j.compscitech.2016.03.023

Cited by 51 publications

(30 citation statements)

References 55 publications

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“…Such high experimental percolation threshold value could be attributed to the uneven distribution and large aggregates of GNPs in the polymer matrix. Similar percolation threshold values were already observed in GNP/epoxy composites [23,24]. At low filler concentrations aggregated particles do not form a conductive path.…”

Section: Electrical Propertiessupporting

confidence: 83%

Enhancing electrical conductivity of multiwalled carbon nanotube/epoxy composites by graphene nanoplatelets

Kranauskaitė¹,

Macutkevič²,

Borisova³

et al. 2018

physics

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The need of high performance integrated circuits and high power density communication devices drives the development of materials enhancing the conductive performances by carbon nanoparticles. Among nanocomposites, the ternary hybrid carbon nanotubes/graphene nanoplatelets/polymer composites represent a debatable route to enhance the transport performances.In this study hybrid ternary nanocomposites were manufactured by direct mixing of multiwalled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) at a fixed filler content (0.3 wt.%), but different relative combination, within an epoxy system. MWNT/epoxy nanocomposites were manufactured for comparison. The quality of dispersion was evaluated by optical and scanning electron microscopy (SEM). The electrical properties of hybrid composites were measured in the temperature range from 30 up to 300 K.The synergic combination of 1D/2D particles did not interfere with the percolative behaviour of MWCNTs but improved the overall electrical performances. The addition of a small amount of GNPs (0.05 wt.%) led to a strong increment of the sample conductivity over all the temperature range, compared to that of mono filler systems.

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Section: Electrical Propertiessupporting

confidence: 83%

Enhancing electrical conductivity of multiwalled carbon nanotube/epoxy composites by graphene nanoplatelets

Kranauskaitė¹,

Macutkevič²,

Borisova³

et al. 2018

physics

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“…Graphite nanoplatelets (GNPs) are very prospective and economically feasible fillers for the production of conductive composites. Particularly, recent investigations [17][18][19][20][21][22][23][24] of the EM response of GNP/polymer composites in microwave and terahertz ranges showed their great potential for the manipula tion of EM radiation.…”

Section: Introductionmentioning

confidence: 99%

Terahertz absorption in graphite nanoplatelets/polylactic acid composites

Bychanok

Angelova

Paddubskaya

et al. 2018

J. Phys. D: Appl. Phys.

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The electromagnetic properties of composite materials based on poly(lactic) acid (PLA) filled with graphite nanoplatelets (GNP) were investigated in the microwave (26-37 GHz) and terahertz (0.2-1 THz) frequency ranges. The maximum of the imaginary part of the dielectric permittivity was observed close to 0.6 THz for composites with 1.5 and 3 wt.% of GNP. The experimental data of complex dielectric permittivity of GNP/PLA composites was modelled using the MaxwellGarnett theory. The effects of fine dispersion, agglomeration, and percolation in GNPbased composites on its electromagnetic constitutive parameters, presence, and position of THz absorption peak are discussed on the basis of the modeling results and experimental data. The unique combination of conductive and geometrical parameters of GNP embedded into the PLA matrix below the percolation threshold allow us to obtain the THz absorptive material, which may be effectively used as a 3Dprinting filament.

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“…Different factors including, Intrinsic properties of filler such as carbon black structure, the aspect ratio, permittivity ( ɛ *), permeability ( μ *), and intrinsic conductivity affected the EMI SE (EMI SE) of polymer composites . Incorporation of conductive fillers such as carbon black, carbon nanotube (CNT), nano graphite, and graphene into the polymeric matrices is considered as an appropriate method to fabricate conductive polymer nanocomposites, which potentially used as EMI shielding materials . Recently, hybrid composites based on two filler types with different geometrical and electrical characteristics attract considerations to modify the electrical, EMI shielding properties and cost of shielding materials .…”

Section: Introductionmentioning

confidence: 99%

The electrical conductivity and EMI shielding properties of polyurethane foam/silicone rubber/carbon black/nanographite hybrid composites

Jeddi

Katbab

2017

Polymer Composites

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Electrically conductive nanocomposites based on an open cell polyurethane foam were fabricated by dip‐coating of the PU foam in a cross‐linkable doping solution. The doping solution was prepared by mixing of room temperature vulcanizing silicone rubber, and a hybrid of conductive filler systems consisted of carbon black and graphite nanoplates in n‐hexane as a solvent. The influence of conductive filler types and GN: CB ratio at a constant concentration, on the electrical conduction, dielectric properties in the frequency range of 10°–105 Hz, and electromagnetic wave interference shielding effectiveness (SE) in the X‐band frequency (8.2–12.4 GHz) were studied. SEM images showed the formation of continuous conductive networks by both CB and GNP particles within silicon rubber. The impedance analysis results revealed highest electrical resistance of nanocomposite based on GNP while by incorporation of CB, the electrical conductivity of hybrid systems increased. The EMI SE results indicated reflection loss as the dominant shielding mechanism in all samples. Higher absorption loss in the hybrid nanocomposites in compared with GNP based composite was observed. POLYM. COMPOS., 39:3452–3460, 2018. © 2017 Society of Plastics Engineers

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Electromagnetic properties of graphene nanoplatelets/epoxy composites

Cited by 51 publications

References 55 publications

Enhancing electrical conductivity of multiwalled carbon nanotube/epoxy composites by graphene nanoplatelets

Enhancing electrical conductivity of multiwalled carbon nanotube/epoxy composites by graphene nanoplatelets

Terahertz absorption in graphite nanoplatelets/polylactic acid composites

The electrical conductivity and EMI shielding properties of polyurethane foam/silicone rubber/carbon black/nanographite hybrid composites

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