Journal ArticleDOI
Graphite Nanoplatelet−Epoxy Composite Thermal Interface Materials
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TLDR
In this article, the performance of a few graphene layer n ∼ 4, with a thickness of ∼ 2 nm, was investigated for epoxy composites and it was shown that the G4 GNPs provide a thermal conductivity enhancement of more than 3000% (loading of ∼25 vol %).Abstract:
Natural graphite was intercalated, thermally exfoliated, and dispersed in acetone to prepare graphite nanoplatelets (GNPs, Gn) of controlled aspect ratio. Thermal conductivity measurements indicate that few graphene layer Gn, where n ∼ 4, with a thickness of ∼2 nm function as a very efficient filler for epoxy composites. When embedded in an epoxy matrix, the G4 GNPs provide a thermal conductivity enhancement of more than 3000% (loading of ∼25 vol %), and a thermal conductivity κ = 6.44 W/mK, which surpasses the performance of conventional fillers that require a loading of ∼70 vol % to achieve these values. We attribute the outstanding thermal properties of this material to a favorable combination of the high aspect ratio, two-dimensional geometry, stiffness, and low thermal interface resistance of the GNPs.read more
Citations
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A micromechanics-based analytical solution for the effective thermal conductivity of composites with orthotropic matrices and interfacial thermal resistance
TL;DR: An analytical solution for the effective thermal conductivity of composites composed of orthotropic matrices and spherical inhomogeneities with interfacial thermal resistance using a micromechanics-based homogenization and a mean-field approach called the Mori-Tanaka method is obtained.
Journal ArticleDOI
Multifunctional anisotropic flexible cycloaliphatic epoxy resin nanocomposites reinforced by aligned graphite flake with non-covalent biomimetic functionalization
Zheng Su,Zheng Su,Hua Wang,Hua Wang,Konghu Tian,Konghu Tian,Weiqi Huang,Weiqi Huang,Yulan Guo,Yulan Guo,Jing He,Jing He,Xingyou Tian,Xingyou Tian +13 more
TL;DR: In this article, a polydopamine (PDA) shell on the surface of graphite flake was used to enhance the compatibility between the filler and the flexible cycloaliphatic epoxy resin (CER) matrix via hydrogen bond.
Journal ArticleDOI
An experimental study on the thermal performance of cellulose-graphene-based thermal interface materials
TL;DR: In this paper, an innovative thermal interface material (TIM) paper based on a composite of cellulose and graphene is investigated experimentally, and the in-plane and through-plane thermal conductivities of the TIM papers are measured using a laser-flash-method (LFM).
Journal ArticleDOI
Hybridization of hexagonal boron nitride nanosheets and multilayer graphene: Enhanced thermal properties of epoxy composites
TL;DR: In this article, an effective and reproducible method for hybridization of surface modified hexagonal boron nitride (h-BNNS) and multilayer graphene (MLG) by silane coupling agents was reported.
Journal ArticleDOI
Field-structured magnetic platelets as a route to improved thermal interface materials
Kyle J. Solis,James E. Martin +1 more
TL;DR: In this paper, the authors explored field-structured magnetic platelet composites as a new approach to more effective thermal interface materials (TIMs) and showed that these platelets have a thermal conductivity anisotropy of ∼3.
References
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Journal Article
Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
TL;DR: An experimental investigation of magneto-transport in a high-mobility single layer of graphene observes an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene.
Journal ArticleDOI
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