Experiments and modeling of thermal conductivity of flake graphite/polymer composites affected by adding carbon-based nano-fillers

Zhou, Song; Xu, Jinzao; Yang, Quan‐Hong; Chiang, Sumwai; Li, Baohua; Du, Hongda; Xu, Chengjun; Kang, Feiyu

doi:10.1016/j.carbon.2013.02.018

Cited by 57 publications

(25 citation statements)

References 30 publications

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“…To further analyze and elucidate the effective thermal conductivities of sandwiched composites, several equations incorporating theoretical and empirical models have been developed [29][30][31][32][33][34]. In this study, we applied the modified series conduction model to calculate the thermal conductivity of sandwiched composites and compared it with our experimental data.…”

Section: Resultsmentioning

confidence: 97%

Sandwiched epoxy–alumina composites with synergistically enhanced thermal conductivity and breakdown strength

Wang

Yang

et al. 2017

J Mater Sci

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Development of polymer-based composites with simultaneously high thermal conductivity and breakdown strength has attracted considerable attentions owing to their important applications in both electronic and electric industries. In this study, we successfully design novel epoxy-based composites with nanoAl 2 O 3 /epoxy composite layer sandwiched between micro-Al 2 O 3 /epoxy composite layers, which show synergistically and significantly enhanced thermal conductivity and breakdown strength. Compared with the traditional composites, the bottleneck that both thermal conductivity and breakdown strength cannot be simultaneously enhanced can be overcome successfully. An optimized sandwiched alumina-epoxy composite with 70 wt% micro-Al 2 O 3 fillers in the outer layers and 3 wt% nano-Al 2 O 3 in the middle layer simultaneously displays a high thermal conductivity of 0.447 W m -1 K -1 (2.4 times of that of epoxy) and a high breakdown strength of 68.50 kV mm -1 , which is 6.3 % higher than that of neat epoxy (64.45 kV mm -1 ). The experimental results on the thermal conductivity of multi-layered alumina-epoxy composites were in well accordance with the theoretical values predicted from the series conduction model. This novel technique simultaneously improves thermal conductivity and breakdown strength, which is of critical importance for design of perspective composites for electronic and electric equipments.

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Section: Resultsmentioning

confidence: 97%

Sandwiched epoxy–alumina composites with synergistically enhanced thermal conductivity and breakdown strength

Wang

Yang

et al. 2017

J Mater Sci

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“…Zhou et al were able to measure and model the enhancements to the thermal conductivity of natural flake graphite/polymer (NFG/polymer) composite sheets caused by adding carbon black, CNTs, and graphene as nano-fillers. 58 In the research detailed in this dissertation, I performed a 3D finite element analysis of a layered composite structure with thermal properties as specified from the experimental results. The model consisted of hex elements (6-sided blocks, i.e.…”

Section: Modeling Of the Thermal Properties Of Carbon Nanotube-polymementioning

confidence: 99%

Development and thermal properties of carbon nanotube-polymer composites

Jackson

2016

Composites Part B: Engineering

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“…The addition of GN layer onto the Cu foil exhibits an improved E hd of 9%, facilitating the application of heat sink. Considering as one-dimensional heat conduction, one famous Fourier's law is adopted to determine the effective thermal conductivity (k) of heat sinks [28,29]:…”

Section: Resultsmentioning

confidence: 99%