Preparation of rGO@Fe<sub>3</sub>O<sub>4</sub> nanocomposite and its application to enhance the thermal conductivity of epoxy resin

Geng, Jiaqi; Men, Yuanli; Liu, Chen; Ge, Xiang; Yuan, Caideng

doi:10.1039/d1ra02254g

Cited by 22 publications

(8 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The magnetic field's thermal conductivity was 0.611 W m À1 K À1 . 23 Hu et al prepared oxide-carbon nanotube nanostructures decorated with nickel nanoparticles (NiGNT), which were then subjected to a reduction process and then used as reinforcing materials to strengthen the epoxy resin matrix. The ferromagnetism of Ni nanoparticles helped the NiGNT nanostructures align vertically inside a magnetic field and exhibit enhanced anisotropic thermal conductivity, reaching 0.362 and 0.462 W m À1 K À1 for the out-of-plane and in-plane thermal conductivity of the NiGNT-30 samples at 30 wt% packing.…”

Section: Introductionmentioning

confidence: 99%

Anisotropy induced in magnetic field in GNPs/epoxy composites used as an effective heat dissipation electronic packaging material

Yan,

Zhang,

Gao

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

This article investigates the effect of different magnetic fields on modulating the alignment of graphene nanoplatelets (GNPs) and their impact on the thermal conductivity of epoxy nanocomposites. Various nanocomposite specimens were fabricated with different GNP contents by using magnetically field‐aligned GNPs in the fabrication process to enhance the thermal conductivity. The results showed that the in‐plane thermal conductivity of the Bmf (Bidirectional magnetic field) sample with 5 wt% GNPs added reached 0.75 W m−1 K−1, which is 276.6% higher than that of pure epoxy resin and the anisotropy coefficient (K∥/K⊥) reached 3.3. In addition, temperature rise tests were performed to simulate the thermal conductivity of nanocomposites used as an electronic packaging material, and the results indicated that the composites achieved a significant increase in in‐plane thermal conductivity with a lower amount of filler. This provides valuable insights into the preparation of thermally conductive composites and demonstrates their potential as a thermal management packaging material for next‐generation electronic devices.

show abstract

“…[32,33] In this context, rGO has been widely used and therefore numerous catalyst species are immobilized or deposited on reduced graphene oxide. Some examples of this type of hybrid composite are rGO/enzymes, [34] rGO/Fe 3 O 4 , [35,36] rGO/polyoxometalate composite [37] and rGO/ cellulose. [29] Among these, the decoration with magnetic nanoparticles is particularly interested, because magnetic reduced…”

Section: Introductionmentioning

confidence: 99%

The Immobilized Zirconocene Chloride on Magnetite‐reduced Graphene Oxide: A Highly Efficient and Reusable Heterogeneous Nanocatalyst for One‐pot Three‐component Synthesis of Tetrahydrobenzo[b]pyrans and Dihydropyrano[3,2‐c]chromenes

Bayzidi

Zeynizadeh

2022

ChemistrySelect

View full text Add to dashboard Cite

The present paper describes the synthesis and characterization of the functionalized magnetite reduced graphene oxide (rGO@Fe3O4) with zirconocene dichloride as rGO@Fe3O4@ZrCp2Cl2. The prepared magnetic nanomaterial was characterized by Fourier‐transform infrared spectroscopy (FT‐IR), scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDX), X‐ray diffraction (XRD), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), inductively coupled plasma optical emission spectroscopy (ICP‐OES) and mass spectrometry (MS). This new heterogeneous nanocatalyst showed the perfect catalytic activity towards synthesis of tetrahydrobenzo[b]pyran and Dihydropyrano[3,2‐c]chromenes derivatives through multicomponent reaction of dimedone or 4‐hydroxycoumarin, malononitrile and aromatic aldehydes in polyethylene glycol 400 (PEG‐400) at 100 °C. The influence of the amount of nanocatalyst, varying temperature of the reaction and the kind of solvent on the rate of condensation reaction was investigated. Recovery and reusability of the applied nanocatalyst was examined for five consecutive cycles without the significant loss of its catalytic activity.

show abstract

Preparation of rGO@Fe₃O₄ nanocomposite and its application to enhance the thermal conductivity of epoxy resin

Abstract: A rGO@Fe3O4 nanocomposite was prepared by a solvothermal method. Then the rGO@Fe3O4/epoxy resin composite was cured in a magnetic field. This shows that rGO@Fe3O4 can enhance the heat-conductivity of epoxy resins.

Cited by 22 publications

References 39 publications

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

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

Anisotropy induced in magnetic field in GNPs/epoxy composites used as an effective heat dissipation electronic packaging material

The Immobilized Zirconocene Chloride on Magnetite‐reduced Graphene Oxide: A Highly Efficient and Reusable Heterogeneous Nanocatalyst for One‐pot Three‐component Synthesis of Tetrahydrobenzo[b]pyrans and Dihydropyrano[3,2‐c]chromenes

Contact Info

Product

Resources

About

Preparation of rGO@Fe3O4 nanocomposite and its application to enhance the thermal conductivity of epoxy resin

Abstract: A rGO@Fe3O4 nanocomposite was prepared by a solvothermal method. Then the rGO@Fe3O4/epoxy resin composite was cured in a magnetic field. This shows that rGO@Fe3O4 can enhance the heat-conductivity of epoxy resins.

Cited by 22 publications

References 39 publications

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

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

Anisotropy induced in magnetic field in GNPs/epoxy composites used as an effective heat dissipation electronic packaging material

The Immobilized Zirconocene Chloride on Magnetite‐reduced Graphene Oxide: A Highly Efficient and Reusable Heterogeneous Nanocatalyst for One‐pot Three‐component Synthesis of Tetrahydrobenzo[b]pyrans and Dihydropyrano[3,2‐c]chromenes

Contact Info

Product

Resources

About

Preparation of rGO@Fe₃O₄ nanocomposite and its application to enhance the thermal conductivity of epoxy resin