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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Effect of Curing and Functionalization on the Interface Thermal Conductance in Carbon Nanotube–Epoxy Composites
Vikas Varshney,Vikas Varshney,Ajit K. Roy,T. Michalak,Jonghoon Lee,Jonghoon Lee,Barry L. Farmer +6 more
TL;DR: In this paper, the interface thermal conductance in a functionalized carbon nanotube (CNT)-epoxy composite system and how it is modified when the surrounding matrix is cured was investigated.
Journal ArticleDOI
Preparation and thermal properties of the graphene–polyolefin adhesive composites: Application in thermal interface materials
TL;DR: The comparison between the present GHMPSA TIM and other commercial TIMs indicates that the present Graphene/HMPSA composite is a commendable TIM in reducing thermal contact resistance.
Journal ArticleDOI
Curing behaviour of epoxy resin/graphite composites containing ionic liquid
TL;DR: In this paper, an isoconversional method was adopted for the analysis of epoxy resin/graphite composites by the inclusion of expanded graphite (EG), ionic liquid of 1-butyl-3-methyl-methylimidazolium hexafluorophosphate ([BMIm]PF6) or their combination are shown in the whole conversion range.
Journal ArticleDOI
Highly conductive thermal interface materials with vertically aligned graphite-nanoplatelet filler towards: High power density electronic device cooling
Xulei Wu,Huatao Wang,Ziao Wang,Ziao Wang,Jinglong Xu,Yajin Wu,Rui Xue,Hongxin Cui,Cong Tian,Yu Wang,Xiaoxiao Huang,Bo Zhong +11 more
TL;DR: In this article, a graphite nanoplatelet (GNP)/polyurethane (PU) based thermal interface materials (TIMs) was used to improve the thermal transfer properties of the TIMs.
Journal ArticleDOI
A brief review on graphene/inorganic nanostructure composites: materials for the future
TL;DR: The exotic physical properties of graphene have led to intense research activities on the synthesis and characterization of graphene composites during the last decade as discussed by the authors, and the methods developed for preparation of such materials and the different application areas are reviewed.
References
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TL;DR: In this paper, an experimental investigation of magneto-transport in a high-mobility single layer of Graphene is presented, where an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene is observed.
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
Electronic Confinement and Coherence in Patterned Epitaxial Graphene
Claire Berger,Claire Berger,Zhimin Song,Xuebin Li,Xiaosong Wu,Nate Brown,Cécile Naud,Didier Mayou,Tianbo Li,J. Hass,Alexei Marchenkov,Edward H. Conrad,Phillip N. First,Walt A. de Heer,Walt A. de Heer +14 more
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