Preparation and Thermal Conductivity of Epoxy Resin/Graphene-Fe3O4 Composites

Wu, Zhong; Chen, Jingyun; Li, Qifeng; Deng, Yida; Zhang, Yiwen; Qin, Zhenbo

doi:10.3390/ma14082013

Cited by 6 publications

(4 citation statements)

References 33 publications

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“…9. It should be noted that the results obtained qualitatively correlate with known similar studies, showing that the presence of GO leads to an increase in the thermal conductivity of the composite [36][37][38]. It was demonstrated that EV/GO1.0 exhibit an enhancement up to twice in thermal conductivity compared to the reference EV.…”

Section: Thermal Conductivity Of the Compositessupporting

confidence: 86%

Thermal conductivity and mechanical properties of epoxy vitrimer nanocomposites reinforced with graphene oxide

et al. 2022

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Novel composite film materials were fabricated by thiol-epoxy click reaction in the presence of ≤ 1 wt.% graphene oxide (GO). SEM, X-ray diffraction, and FTIR techniques were used for comprehensive characterization of the composites' morphology and structure. The grafting of GO into the epoxy vitrimer network was confirmed. The effect of loadings of GO on the mechanical properties of composite films was examined. The tensile strength and Young's modulus of composite material increase by 69 and 46 %, respectively, with the addition of 0.5 wt.% GO. The flexibility of the composite films improved more than fourfold by adding 1.0 wt.% GO compared to the epoxy vitrimer network.The gas-microphone photoacoustic approach was applied for the thermal conductivity evaluation of the samples. The composites showed a maximum increase in thermal conductivity almost two times with the addition of 1.0 wt.% GO as compared to the polymer matrix.

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Section: Thermal Conductivity Of the Compositessupporting

confidence: 86%

Thermal conductivity and mechanical properties of epoxy vitrimer nanocomposites reinforced with graphene oxide

et al. 2022

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“…Another recent application of polymer-nanoparticles (including magnetic nanoparticles) composite is in thermal pads, designed for a rapid transfer of the heat from electronic devices (e.g., automotive microcontrollers) to the surrounding atmosphere [30,31]. Different strategies were tested to enhance the thermal conductivity of polymer-magnetic nanoparticles composites, such as core-shell structures or other additives in the composite [32][33][34][35][36][37][38][39]. However, the effect of a magnetic field, used to align the magnetic nanoparticles during the polymerization process, on the thermal properties of the composite was less studied [40].…”

Section: Introductionmentioning

confidence: 99%

Influences of Dispersions’ Shapes and Processing in Magnetic Field on Thermal Conductibility of PDMS–Fe3O4 Composites

et al. 2021

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Composites of magnetite (Fe3O4) nanoparticles dispersed in a polydimethylsiloxane (PDMS) matrix were prepared by a molding process. Two types of samples were obtained by free polymerization with randomly dispersed particles and by polymerization in an applied magnetic field. The magnetite nanoparticles were obtained from magnetic micrograins of acicular goethite (α-FeOOH) and spherical hematite (α-Fe2O3), as demonstrated by XRD measurements. The evaluation of morphological and compositional properties of the PDMS:Fe3O4 composites, performed by SEM and EDX, showed that the magnetic particles were uniformly distributed in the polymer matrix. Addition of magnetic dispersions promotes an increase of thermal conductivity compared with pristine PDMS, while further orienting the powders in a magnetic field during the polymerization process induces a decrease of the thermal conductivity compared with the un-oriented samples. The shape of the magnetic dispersions is an important factor, acicular dispersions providing a higher value for thermal conductivity compared with classic commercial powders with almost spherical shapes.

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“…When the GR content was 0.134 wt.%, the thermal conductivity of the composite was 54.8% higher than that of pure epoxy. Meanwhile, the product’s thermal stability and dynamic thermomechanical properties were enhanced [ 23 ]. Hu et al used nickel nanoparticles to modify graphene oxide carbon nanotubes so that they can be vertically oriented under the effect of an applied weak magnetic field when doped into an epoxy matrix [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Thermal Conductivity and Dielectric Properties of Epoxy Composites with Fluorinated Graphene Nanofillers

et al. 2023

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The demand for high-performance dielectrics has increased due to the rapid development of modern electric power and electronic technology. Composite dielectrics, which can overcome the limitations of traditional single polymers in thermal conductivity, dielectric properties and mechanical performance, have received considerable attention. In this study, we report a multifunctional nanocomposite material fabricated by blending fluorinated graphene (F-graphene) with epoxy resin. The F-graphene/epoxy composite exhibited a high thermal conductivity of 0.3304 W·m−1·K−1 at a low filler loading of 1.0 wt.%, which was 67.63% higher than that of pure epoxy. The composite dielectric also showed high breakdown strength (78.60 kV/mm), high dielectric constant (8.23), low dielectric loss (<0.015) and low AC conductivity (<10−11 S·m−1). Moreover, the composite demonstrated high thermal stability and strong mechanical strength. It is believed that the F-graphene/epoxy composite has outstanding performance in various aspects and can enable the development and manufacturing of advanced electric power and electronic equipment devices.

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Preparation and Thermal Conductivity of Epoxy Resin/Graphene-Fe3O4 Composites

Cited by 6 publications

References 33 publications

Thermal conductivity and mechanical properties of epoxy vitrimer nanocomposites reinforced with graphene oxide

Thermal conductivity and mechanical properties of epoxy vitrimer nanocomposites reinforced with graphene oxide

Influences of Dispersions’ Shapes and Processing in Magnetic Field on Thermal Conductibility of PDMS–Fe3O4 Composites

Enhanced Thermal Conductivity and Dielectric Properties of Epoxy Composites with Fluorinated Graphene Nanofillers

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