Epoxy composites filled with high surface area-carbon fillers: Optimization of electromagnetic shielding, electrical, mechanical, and thermal properties

Kuzhir, P.; Paddubskaya, A.; Plyushch, Artyom; Volynets, N.; Maksimenko, S. A.; Macutkevič, J.; Kranauskaitė, I.; Banys, J.; Ivanov, Evgeni; Kotsilkova, Rumiana; Celzard, Alain; Fierro, Vanessa; Zicāns, Jānis; Ivanova, Tatjana; Merijs‐Meri, Remo; Bochkov, Ivan; Cataldo, Antonino; Micciulla, F.; Bellucci, Stefano; Lambin, Philippe

doi:10.1063/1.4826529

Cited by 71 publications

(58 citation statements)

References 17 publications

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“…Our hybrid filler (HMM) with a percolation threshold value of 1 wt% is much superior to the individual nanofillers like CNF, MWCNT, and EG. Comparison of our results with those by Manna et al on XNBR/graphene, Petrova et al on PP/MWCNT/clay (rheological percolation threshold 1.5 wt%) and Kuzhir et al on epoxy/MWCNT/expanded graphite (electrical percolation threshold 2.0 wt%) hybrid nanocomposite systems, confirms superior performance of our system with the lowest percolation limit. The comparative dielectric properties are contained in Table .…”

Section: Resultssupporting

confidence: 87%

Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Bhuyan

Roy²,

Srivastava

et al. 2017

Polymer Engineering & Sci

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Homogeneous multiwalled carbon nanotube/montmorillonite hybrid filler (HMM) dispersion was prepared by co‐ultrasonication and was subsequently used to prepare ethylene‐co‐vinyl acetate (EVA) nanocomposites by solution blending method. XRD and TEM analysis of HMM confirm significant interaction between the montmorillonite (MMT) layers and multiwalled carbon nanotubes (MWCNT) in line with previous reports. Analysis of the nanocomposites shows the constituent fillers to be homogeneously dispersed in EVA matrix. Mechanical properties of neat EVA are remarkably improved with HMM content up to 3 wt% followed by reversion. Maximum improvement observed in tensile strength, elongation at break, and toughness are 424%, 109%, and 1122%, respectively. Results show maximum thermal stability at 4 wt% and best dielectric response at 1 wt% HMM content. Exceptional mechanical and dielectric properties of EVA nanocomposites attained may be attributed to homogeneous dispersion of fillers and improved polymer–filler interaction. Comparison shows excellent synergy between MWCNT and MMT towards mechanical reinforcement of EVA. POLYM. ENG. SCI., 58:1155–1165, 2018. © 2017 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 87%

Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Bhuyan

Roy²,

Srivastava

et al. 2017

Polymer Engineering & Sci

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“…It is usually supposed that effective bonding between the polymer matrix and carbon nanoparticles should improve mechanical properties of nanocomposites . Experimental results in confirm enhancement of elastic moduli by introducing small‐sized particles into the polymer matrix. On the other side, there are data testifying that elastic moduli of nanocomposites could reduce comparing the values of pure matrix material because of a limited ability of polymer chains to strongly adhere to the nanoparticles and form the interface layer with a lower density and reduced capability of transferring mechanical loads.…”

Section: Resultsmentioning

confidence: 78%

Cluster microstructure and local elasticity of carbon‐epoxy nanocomposites studied by impulse acoustic microscopy

Levin

Morokov

Petronyuk

et al. 2017

Polymer Engineering & Sci

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The impulse acoustic microscopy method was applied to observe the bulk microstructure and to measure sonic velocities and elastic moduli in the carbon nanocomposite specimens prepared by a traditional method and with the use of a vacuum mixer. It is shown that carbon nanoparticles tend to cluster and form micron‐sized aggregates. The impulse acoustic microscopy technique makes it possible to visualize a non‐uniform distribution of carbon nanofillers over the specimen bulk. Both nanotube and nanoplatelets conglomerates are visible most likely due to the air containing. Results of the elastic measurements demonstrate homogeneity of elastic properties over the material bulk and a weak dependence of sonic velocities and elastic moduli on the filler content. Reduction of the air content and enhancement of elastic properties are observed when increasing the nanofiller content and employing the vacuum mixing technology in nanocomposite fabrication. POLYM. ENG. SCI., 57:697–702, 2017. © 2017 Society of Plastics Engineers

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“…As a result, epoxy composites filled with 1.0-2.0 wt.% EG should be very interesting materials for producing EM coatings for microwave and THz frequencies. A very important point is that such concentrations of EG are still acceptable for retaining good mechanical and thermal properties, [3][4][5][21][22][23] as the elastic properties of the epoxy composites remain the same as for the neat resin. The effect of higher percolation threshold for TG-based composites did not allow us to observe a significant influence of TG loading on the EM performances at low filler content (up to 2 wt.%).…”

Section: Discussionmentioning

confidence: 99%

Microstructure, elastic and electromagnetic properties of epoxy-graphite composites

et al. 2015

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A set of epoxy resin-based composites filled with 0.25 – 2.0 wt.% of commercially available exfoliated graphite (EG) and thick graphene (TG), prepared by suspending EG particles in cyclohexane, and submitting the suspension to a series of grinding and ultrasonic dispersion steps, was produced. The microstructure of such epoxy-graphite composites has been studied by the impulse acoustic microscopy technique. According to acoustic microscopy data, exfoliated graphite microparticles have been well dispersed in the epoxy matrix. TG nanoflakes demonstrated persistent tendency to clustering and formation of agglomerates. The addition of graphite particles in small amount (0.25 – 2.0 wt.%) did not influence the bulk elastic properties of epoxy-graphite composite materials. Being extremely lightweight, 0.003 g cm−3, EG had a lower percolation threshold than TG, at the level of 1-1.5 wt.% against 2.1-3.2 wt.%, respectively. As a result, epoxy composites filled with 1.0-2.0 wt.% EG provided high electromagnetic (EM) interference shielding both at microwave and THz frequencies. In contrast, no significant influence of TG loading was observed at low weight fraction (up to 2 wt.%) on the EM performance of epoxy composites.

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Epoxy composites filled with high surface area-carbon fillers: Optimization of electromagnetic shielding, electrical, mechanical, and thermal properties

Cited by 71 publications

References 17 publications

Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Multiwalled carbon nanotube/montmorillonite hybrid filled ethylene‐co‐vinyl acetate nanocomposites with enhanced mechanical properties, thermal stability, and dielectric response

Cluster microstructure and local elasticity of carbon‐epoxy nanocomposites studied by impulse acoustic microscopy

Microstructure, elastic and electromagnetic properties of epoxy-graphite composites

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