Synergistic effect of hybrid graphene nanoplatelet and multi-walled carbon nanotube fillers on the thermal conductivity of polymer composites and theoretical modeling of the synergistic effect

Yu, Jaesang; Choi, Hoi Kil; Kim, Hyun Su; Kim, Seong Yun

doi:10.1016/j.compositesa.2016.05.022

Cited by 124 publications

(47 citation statements)

References 26 publications

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“…A very high thermal conductivity can also be achieved by making a percolating network of graphene nanoparticles via specialized alignment procedure [26]. Different research groups showed that in polymer composites with nanotube‐nanoplatelet hybrid fillers, the nanoplatelets formed a percolating network through the nanotubes giving the synergic enhancement in the effective thermal conductivity of the composite. They showed that maximum thermal conductivity enhancement is achieved at an optimum ratio of the fillers in the hybrid mix.…”

Section: Introductionmentioning

confidence: 99%

“…Their model captures the effect of changing filler's ratio on the effective thermal conductivity of the composite but results in a large error when the nanotube to nanoplatelet ratio is either too low or too high. Yu et al modified the Mori‐Tanaka scheme to include the effect of multiple fillers for the estimation of thermal conductivity. They found waviness of nanofillers the most sensitive for effective thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Design and development of thermally conductive hybrid nano‐composites in polysulfone matrix

et al. 2018

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A percolating network of hybrid fillers can provide significant synergic enhancement of thermal conductivity in polymer matrix composites. Especially, when platelets and fibers of high aspect ratios are mixed to form a percolating network, the percolation thresholds are small. However, the optimum ratio of platelets to fibers must be acquired for the maximum synergic enhancement. In this work, polysulfone (PSU) matrix‐hybrid fillers composite is designed with high thermal conductivity using a computational model. The calibration of computational model with several experimentally measured thermal conductivities of polymer matrix‐hybrid nanocomposites leads to the composition where maximum synergic effect/maximum thermal conductivity is expected. For the specific PSU–Graphene nano‐platelets (GNPs)/Carbon nano‐tubes (CNTs) hybrid composites synthesized in this study, the composition with maximum thermal conductivity as designed by the model is PSU/8.4% GNPs/1.6% CNTs. The samples produced experimentally around this composition have shown close agreement with the predictions of the model. Sensitivity analyses and parametric studies conducted on the model highlight that the dimensional parameters and the interface resistance of the fillers are the most sensitive to enhance the effective thermal conductivity. POLYM. COMPOS., 40:1419–1432, 2019. © 2018 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and development of thermally conductive hybrid nano‐composites in polysulfone matrix

et al. 2018

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“…In addition to the increased electrical properties, the composites are able to maintain most of the transparency of the pure PC film samples. Yu et al reported that thermal conductivity of polymer composites synergistically improved by the simultaneous incorporation of MWCNT and GNP nanofillers into the PC matrix. Zhang et al studied the thermal conductivities of carbon fillers, including carbon black (CB), MWCNTs, and exfoliated graphite‐based PC nanocomposites.…”

Section: Pc and Cnt/graphene Hybrid Nanocompositesmentioning

confidence: 99%

A review on the mechanical, electrical and EMI shielding properties of carbon nanotubes and graphene reinforced polycarbonate nanocomposites

Bagotia

Choudhary

Sharma

2018

Polymers for Advanced Techs

114

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Recently, it has been found that carbon nanotubes (CNTs) and graphene could prove to be the most promising carbonaceous fillers in polymers nanocomposites field because of their better structural and functional properties. Their uniform dispersion in polymer matrix leads to significant improvements in their several properties. This paper reviews the effect of nanofillers, ie, CNTs, derivatized CNTs, and graphene on the polycarbonate nanocomposite and its application in aerospace, automobile, sports, electronic sectors, and various industries. The comparative analysis of carbon‐based fillers on the different properties of polycarbonate nanocomposites is also included.

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“…The finite element method could be used to assist the structural design of the composites. If the mechanism of the enhancement especially the synergistic effect could be explained clearly, it can better instruct the design of the microstructure in the composite materials to achieve more expected properties [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Calculations of factors that affect thermal conductivity in epoxy composites with hybrid carbon nanotube and graphene nano platelet

Wang

Xiao

Fan

et al. 2020

Mater. Res. Express

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Carbon Nanotubes (CNTs) and Graphene Nano Platelets (GNPs) had been used to enhance the thermal conductivity of the epoxy composites and show a synergistic effect. Complex service conditions also put forward the requirements for the structural design of the composites to get better performance. Researches should be done to further understand the mechanism of enhancement in composites and find ways to assist the design and optimization of the structure. In this research, epoxy composites with CNTs, GNPs and hybrid CNTs-GNPs (5:2) were prepared, whose total content of fillers was kept constant at 0.4 vol%. Test of specific surface area shew the hybrid fillers had less aggregation and the composites with hybrid fillers had the highest thermal conductivity. Observing the microstructure of the composites, CNTs were absorbed on the surface of GNPs, forming a crossnetwork which could improve aggregation and provide channels for the heat. A series of finite element models were established using scripts to find the factors that affect the forming of network and heat flow. A parameter was created to reflect the distribution of the fillers: distance of non-network(DNN). Positions, orientations, ratios, shapes, and sizes are all factors. The effect of angles depends on the relative positions of the fillers. A proper bending degree of CNTs would have better enhancement. The vertical-structure network was created manually and heat flux on the network was shown: GNPs expanded the area of network for the acceptance and release of heat. CNTs provide efficient channels for the multidirectional heat flow. The combination of the geometry expanded the influence region of the network.

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Synergistic effect of hybrid graphene nanoplatelet and multi-walled carbon nanotube fillers on the thermal conductivity of polymer composites and theoretical modeling of the synergistic effect

Cited by 124 publications

References 26 publications

Design and development of thermally conductive hybrid nano‐composites in polysulfone matrix

Design and development of thermally conductive hybrid nano‐composites in polysulfone matrix

A review on the mechanical, electrical and EMI shielding properties of carbon nanotubes and graphene reinforced polycarbonate nanocomposites

Calculations of factors that affect thermal conductivity in epoxy composites with hybrid carbon nanotube and graphene nano platelet

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