Exceptionally high thermal conductivity of thermal grease: Synergistic effects of graphene and alumina

Yu, Wei; Xie, Huaqing; Yin, Luqiao; Zhao, Jun; Xia, Ligang; Chen, Lifei

doi:10.1016/j.ijthermalsci.2015.01.006

Cited by 138 publications

(69 citation statements)

References 48 publications

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“…It is observed that heat conductivity first increases linearly with the degree of agglomeration, reaches a maximum at the percolation threshold and finally decreases. The raising of conductivity with size (at nanoscale) was confirmed by many authors [46][47][48][49][50][51] in the case of epoxy resin with various fillers and by Prasher et al [31,52] in the case of nanofluids.…”

Section: Final Validation Of Dependence Of the Effective Thermal Condmentioning

confidence: 70%

Effect of volume-fraction dependent agglomeration of nanoparticles on the thermal conductivity of nanocomposites: Applications to epoxy resins, filled by SiO2, AlN and MgO nanoparticles

Machrafi

Lebon

Iorio

2016

Composites Science and Technology

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Abstract.A thermodynamic model for transient heat conduction in ceramic-polymer nanocomposites is proposed. The model takes into account particle's size, particle's volume fraction, and interface characteristics with emphasis on the effect of agglomeration of particles on the effective thermal conductivity of the nanocomposite.The originality of the present work is its basement on extended irreversible thermodynamics, combining nano-and continuum-scales without invoking molecular dynamics. The model is compared to experimental data using the examples of SiO2, AlN and MgO nanoparticles embedded in epoxy resin. The analysis is limited to spherical nanoparticles. The dependence of the degree of agglomeration with respect of the volume fraction of particles is also discussed and a power-law relation is established through a kinetic mechanism and experiments performed in our laboratory. This relation is used in 2 our theoretical model, resulting into a good agreement with experiments. It is shown that the effective thermal conductivity may either increase or decrease with the degree of agglomeration.

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Section: Final Validation Of Dependence Of the Effective Thermal Condmentioning

confidence: 70%

Effect of volume-fraction dependent agglomeration of nanoparticles on the thermal conductivity of nanocomposites: Applications to epoxy resins, filled by SiO2, AlN and MgO nanoparticles

Machrafi

Lebon

Iorio

2016

Composites Science and Technology

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“…An excellent TIM with high heat dissipation and high deformability must properly align to the surface topography of the mating surfaces and can also replace air and fill in the voids at the interface (Yu et al 2015c). Due to the superiority of TIM's heat dissipation when compared to that of the replaced air at 0.026 W/m K, the interfacial thermal resistance is minimized resulting in reduced temperature of the electronic component junction.…”

Section: Thermal Conductivity Of Pcmsmentioning

confidence: 99%

“…Due to the superiority of TIM's heat dissipation when compared to that of the replaced air at 0.026 W/m K, the interfacial thermal resistance is minimized resulting in reduced temperature of the electronic component junction. Presently, TIMs can be classified as elastomeric thermal pads, PCMs, thermal greases, and solders (Yu et al 2015c). Thermal grease is a type of thixotropic paste with high heat dissipation, capable of effectively filling the gaps of the mating surface.…”

Section: Thermal Conductivity Of Pcmsmentioning

confidence: 99%

Recently emerging trends in thermal conductivity of polymer nanocomposites

Idumah

Hassan²

2016

Reviews in Chemical Engineering

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Due to escalating power densities in electronics, information, communication, energy storage, aerospace, and automobile technologies, heat dissipation has become immensely essential for the efficient performance and reliability of photonic, electronics, optoelectronics, and other devices in order to proactively prevent premature failure due to overheating. The functionalization and synergistic inclusion of thermally conducting nanoparticles such as carbon derivatives and metallic and ceramic fillers into polymer matrices have resulted in development of thermally conducting polymer nanocomposites. This has enlarged the scope of application of these materials in areas hitherto restricted due to poor thermal conductivity and, therefore, opened broad windows of opportunities for polymer nanocomposites as emerging alternative replacements for metal components in various applications where effective heat dissipation is compulsory for device performance. Thus, this paper critically discusses globally emerging technologies applied in the development of thermally conductive polymer nanocomposites for various industrial applications.

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“…Hybrid size particles filler can improve the thermal conductivity of the TFCs [79][80][81][82]. As can be seen from Figure 11, the small particles can easily occupy the space between the adjacent large particles, which leads to larger packing density of the filler in the matrix and lower thermal resistance among adjacent conductive filler [83]. Due to the high thermal conductivity and large aspect ratio, CNT attracted great attention as hybrid filler with particles for thermal conductivity enhancement of TFCs.…”

Section: The Synergistic Effect Of 1d Nanomaterials and 0dmentioning

confidence: 99%

“…Small particle (！Ｆ 2 ／ 3 ) Figure 11: Schematic for the distribution of hybrid size alumina particles [83].…”

Section: The Synergistic Effect Of 1d Nanomaterials and 0dmentioning

confidence: 99%

Effect of Filler Shape on the Thermal Conductivity of Thermal Functional Composites

Liu

Chen

Zhou

et al. 2017

Journal of Nanomaterials

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With the rapid development of electronic industry, heat dissipation issue becomes more and more important. Thermal functional composites (TFCs) are usually binary composites, filled with thermal conductive additives (nanomaterials) in matrix, and the composites show good thermal performance. The theoretical and experimental results show that the filler shape is one of the most important but easily overlooked factors. In this article, we provide a systematic review of the effect of the filler shape on the thermal conductivity of TFCs, and the heat transfer enhancement based on synergistic effect is also summed up. Finally, the future trends of further improving thermal properties of TFCs are predicted.

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Exceptionally high thermal conductivity of thermal grease: Synergistic effects of graphene and alumina

Cited by 138 publications

References 48 publications

Effect of volume-fraction dependent agglomeration of nanoparticles on the thermal conductivity of nanocomposites: Applications to epoxy resins, filled by SiO2, AlN and MgO nanoparticles

Effect of volume-fraction dependent agglomeration of nanoparticles on the thermal conductivity of nanocomposites: Applications to epoxy resins, filled by SiO2, AlN and MgO nanoparticles

Recently emerging trends in thermal conductivity of polymer nanocomposites

Effect of Filler Shape on the Thermal Conductivity of Thermal Functional Composites

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