Improved thermal conductivity of epoxy resin by graphene–nickel three-dimensional filler

Liu, Yanjie; Lu, Jiangyin; Cui, Yanbin

doi:10.1016/j.crcon.2019.12.003

Cited by 27 publications

(12 citation statements)

References 39 publications

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“…For this reason, the incorporation of nanoparticles in a polymer matrix is often employed to enhance performance, and this has become an issue of interest in academia and industry [3,4]. In this respect, graphene has attracted a great deal of attention due to its capacity to improve the mechanical, thermal, and electrical properties of polymer nanocomposites and their behavior to thermomechanical and photooxidative degradation [5][6][7][8][9][10][11][12][13][14]. In addition, the presence of GnPs enhances the effect of elongated flow, which, consequently, improves mechanical properties with the draw ratio of nanocomposites compared to the matrix alone [9].…”

Section: Introductionmentioning

confidence: 99%

Morphology, Rheological and Mechanical Properties of Isotropic and Anisotropic PP/rPET/GnP Nanocomposite Samples

et al. 2021

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The effect of graphene nanoplatelets (GnPs) on the morphology, rheological, and mechanical properties of isotropic and anisotropic polypropylene (PP)/recycled polyethylene terephthalate (rPET)-based nanocomposite are reported. All the samples were prepared by melt mixing. PP/rPET and PP/rPET/GnP isotropic sheets were prepared by compression molding, whereas the anisotropic fibers were spun using a drawing module of a capillary viscometer. The results obtained showed that the viscosity of the blend is reduced by the presence of GnP due to the lubricating effect of the graphene platelets. However, the Cox–Merz rule is not respected. Compared to the PP/rPET blend, the GnP led to a slight increase in the elastic modulus. However, it causes a slight decrease in elongation at break. Morphological analysis revealed a poor adhesion between the PP and PET phases. Moreover, GnPs distribute around the droplets of the PET phase with a honey-like appearance. Finally, the effect of the orientation on both systems gives rise not only to fibers with higher modulus values, but also with high deformability and a fibrillar morphology of the dispersed PET phase. A fragile-ductile transition driven by the orientation was observed in both systems.

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Section: Introductionmentioning

confidence: 99%

Morphology, Rheological and Mechanical Properties of Isotropic and Anisotropic PP/rPET/GnP Nanocomposite Samples

et al. 2021

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“…Limited thermal properties of polymers, such as the inability to effectively dissipate heat, which is characteristic of low thermal conductivity, lessen their potential in many engineering applications ( 39 ). If a polymer can be engineered with high thermal dissipation ability, polymeric heat spreaders and heat exchangers can be manufactured with attractive features, including structural compactness, lightweight, ease of processing, and low cost, which could find many applications in electronics, water, and energy industry ( 40 ).…”

Section: Resultsmentioning

confidence: 99%

Sustainable valorization of asphaltenes via flash joule heating

et al. 2022

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The refining process of petroleum crude oil generates asphaltenes, which poses complicated problems during the production of cleaner fuels. Following refining, asphaltenes are typically combusted for reuse as fuel or discarded into tailing ponds and landfills, leading to economic and environmental disruption. Here, we show that low-value asphaltenes can be converted into a high-value carbon allotrope, asphaltene-derived flash graphene (AFG), via the flash joule heating (FJH) process. After successful conversion, we develop nanocomposites by dispersing AFG into a polymer effectively, which have superior mechanical, thermal, and corrosion-resistant properties compared to the bare polymer. In addition, the life cycle and technoeconomic analysis show that the FJH process leads to reduced environmental impact compared to the traditional processing of asphaltene and lower production cost compared to other FJH precursors. Thus, our work suggests an alternative pathway to the existing asphaltene processing that directs toward a higher value stream while sequestering downstream emissions from the processing.

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“…Based on the XRD results, the BaSO 4 was multi-crystalline, and we could find marked facets corresponding to the degree, shown in Figure 6 . The assignments of the crystalline phases are marked as the facet numbers in Figure 6 [ 21 ]. A comparison of the SEAD and XRD data shows that the BaSO 4 crystalline facets (041) and (200) were found with both analysis techniques.…”

Section: Resultsmentioning

confidence: 99%

“…Greater interaction between the polymer matrix and graphene/rGO results in better tensile and elongation properties. Greater interfacial interaction produces better enhancement of the mechanical, electrical, and thermal properties [ 21 ]. A similar report in the literature on a three-dimensional graphene/nickel structure showed an enhancement in thermal conductivity from 0.2639 to 2.6549 W/m K [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance and Thermal Conductivity Enhancement of Reduced Graphene Oxide–BaSO4–Epoxy Composites

Yung

Tsai

et al. 2022

Polymers

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The results of studies on the corrosion protectiveness and thermal conductivity of reduced graphene oxide–BaSO4 epoxy composites are reported here. A commercial epoxy resin and reduced graphene oxide (rGO) were blended with a hardening reagent and then mixed with prepared BaSO4–epoxy resin (B–epoxy). The reduced graphene oxide–BaSO4–epoxy composite (rGO–B–epoxy) paste was used to coat the surfaces of Al 7205 alloy and the corrosion and thermal properties were investigated. A corrosion test in a 3.5 wt% synthetic sea water solution showed that the composite coating containing BaSO4 had the best corrosion resistance. Moreover, the rGO–B–epoxy composite showed better protection against corrosion than the epoxy alone. The rGO–B–epoxy composite with 5 wt% BaSO4 had an in-plane coefficient of thermal conductivity of approximately 165.0 W/m K, and the in-plane thermal diffusivity was 71.38 mm2/s. In standard thermal conductivity tests, all three samples had values below 40 W/m K. The rGO–B–epoxy composites showed good surface corrosion protection and in-plane thermal conductivity.

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Improved thermal conductivity of epoxy resin by graphene–nickel three-dimensional filler

Cited by 27 publications

References 39 publications

Morphology, Rheological and Mechanical Properties of Isotropic and Anisotropic PP/rPET/GnP Nanocomposite Samples

Morphology, Rheological and Mechanical Properties of Isotropic and Anisotropic PP/rPET/GnP Nanocomposite Samples

Sustainable valorization of asphaltenes via flash joule heating

Corrosion Resistance and Thermal Conductivity Enhancement of Reduced Graphene Oxide–BaSO4–Epoxy Composites

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