Synergy effects of graphene and multiwalled carbon nanotubes hybrid system on properties of epoxy nanocomposites

Ghaleb, Zaid Aws Ali; Mariatti, M.; Ariff, Zulkifli Mohamad

doi:10.1177/0731684417692055

Cited by 58 publications

(56 citation statements)

References 34 publications

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“…An exceptional high thermal conductivity has been reported due to the synergic effect of hybrid systems . Hybrids of graphene or graphite with MWCNT showed an important synergy and improved κ more than 120 % respect to the neat epoxy resin and 90 % respect to the composites containing individual MWCNT or graphene.…”

Section: Properties Of Epoxy Nanocompositesmentioning

confidence: 99%

Epoxy Nanocomposites Filled with Carbon Nanoparticles

Martin-Gallego

Yuste-Sánchez

Sánchez-Hidalgo

et al. 2018

The Chemical Record

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Over the past decades, the development of high performance lightweight polymer nanocomposites and, in particular, of epoxy nanocomposites has become one the greatest challenges in material science. The ultimate goal of epoxy nanocomposites is to extrapolate the exceptional intrinsic properties of the nanoparticles to the bulk matrix. However, in spite of the efforts, this objective is still to be attained at commercially attractive scales. Key aspects to achieve this are ultimately the full understanding of network structure, the dispersion degree of the nanoparticles, the interfacial adhesion at the phase boundaries and the control of the localization and orientation of the nanoparticles in the epoxy system. In this Personal Account, we critically discuss the state of the art and evaluate the strategies to overcome these barriers.

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Section: Properties Of Epoxy Nanocompositesmentioning

confidence: 99%

Epoxy Nanocomposites Filled with Carbon Nanoparticles

Martin-Gallego

Yuste-Sánchez

Sánchez-Hidalgo

et al. 2018

The Chemical Record

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“…6), while in other works a similar effect was observed only at low frequences below 1 MHz [28]. An increase could be attributed to the formation of a more effective conductive network due to combining 2D MWCNT and 1D GNP conductive particles.…”

Section: Electrical Propertiesmentioning

confidence: 65%

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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“…However, the π-π interaction and van der Waals force between the graphene layers make the GNPs to form aggregation easily. When optimal content of CNTs is added between the GNPs, the flexible CNTs can suppress the gathering of GNPs [ 21 , 45 ]. Furthermore, the tortuous CNTs form bridging and network between the GNPs, which are benefit to load transfer, further improve the mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

“…Ghaleb et al added 0.5 vol.% graphene nano-powder and CNTs to study the synergistic effect of hybrid fillers on the tensile properties of epoxy based nanocomposites in 2017 [ 21 ]. The nanocomposites with a graphene:CNT ratio of 1:4 have the higher tensile strength and tensile modulus than the ones with other filler ratios.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Multi-Walled Carbon Nanotubes and Graphene Nanoplatelets on the Monotonic and Fatigue Properties of Uncracked and Cracked Epoxy Composites

2020

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The fatigue properties of the polymer nanocomposites reinforced with a hybrid nano-filler system have seldom studied before. Accordingly, epoxy nanocomposites with various multi-walled carbon nanotube (MWCNT)/graphene nanoplatelet (GNP) filler ratios were prepared to study comprehensively the synergistic effect of the hybrid nano-fillers on the monotonic and cyclic mechanical properties of the nanocomposites. The quasi-statically tensile properties and fatigue-life curves were experimentally determined using uncracked bulk specimens. Additionally, pre-cracked specimens were utilized to study the fracture toughness and fatigue crack growth rate of the nanocomposites. A synergistic index based on the properties of the nanocomposites with individual types of filler was proposed to evaluate the synergistic effect of two employed nano-fillers on the studied properties. The index was verified to be a highly discriminatory tool to evaluate the synergistic effect of hybrid nano-fillers on the studied mechanical properties. The experimental results show that the composites with a MWCNT:GNP ratio of 1:9 have the higher monotonic and fatigue properties than those with other filler ratios. Adding appropriate amount of CNTs can prevent the agglomeration of GNPs. The flexible CNTs bridge adjacent GNPs to constitute a favorable network for load transfer. Moreover, there is a linear relationship between the static and fatigue strengths of the studied nanocomposites. Integrated analysis of experimental data and a fracture surface study reveals that the dispersion of nano-fillers influences the mechanical properties significantly. The crack deflection effect due to the path bifurcation caused by encountering the filler cluster and the filler bridging effect are the main reinforcement mechanism of the studied properties.

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Synergy effects of graphene and multiwalled carbon nanotubes hybrid system on properties of epoxy nanocomposites

Cited by 58 publications

References 34 publications

Epoxy Nanocomposites Filled with Carbon Nanoparticles

Epoxy Nanocomposites Filled with Carbon Nanoparticles

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

Synergistic Effect of Multi-Walled Carbon Nanotubes and Graphene Nanoplatelets on the Monotonic and Fatigue Properties of Uncracked and Cracked Epoxy Composites

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