Enhanced thermal conductivity of epoxy composites by constructing aluminum nitride honeycomb reinforcements

Wei, Zhilei; Xie, Weijun; Ge, Bangzhi; Zhang, Zhejian; Yang, Wanli; Xia, Hongyan; Wang, Bo; Jin, Haiyun; Gao, Nong; Shi, Zhongqi

doi:10.1016/j.compscitech.2020.108304

Cited by 97 publications

(40 citation statements)

References 45 publications

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“…Nowadays, the intelligent electronic devices have been developed towards high power density and miniaturization direction, which arouses urgent requirement for the thermal management materials (TMMs) with excellent performance [1][2][3][4]. The advanced TMMs should have the characteristics of low density, high strength, and high thermal conductivity (TC) perpendicular to the inferior mechanical properties and high CTE in outplane direction of the highly oriented graphite blocks lead to the failure under harsh service environments [11].…”

Section: Introduction mentioning

confidence: 99%

Continuous SiC skeleton reinforced highly oriented graphite flake composites with high strength and specific thermal conductivity

et al. 2022

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Highly oriented graphite-based composites have attracted great attention because of their high thermal conductivity (TC), but the low mechanical properties caused by the inhomogeneous distribution and discontinuity of reinforcements restrict the wide applications. Herein, continuous SiC ceramic skeleton reinforced highly oriented graphite flake (SiC/GF) composites were successfully prepared by combining vacuum filtration and spark plasma sintering. The effect of SiC concentration on the microstructure, flexural strength, and thermophysical properties of the composites was investigated. The GF grains in the composites exhibited high orientation with a Lotgering factor of > 88% when the SiC concentration was ⩽ 30 wt%, and the SiC skeleton became continuous with the SiC concentration reaching 20 wt%. The formation of continuous SiC skeleton improved the flexural strength of the composites effectively while keeping the TC in a high level. Especially, the composites with 30 wt% SiC exhibited the flexural strength up to 105 MPa, and the specific TC reaching 0.118 W·m2·K−1·kg·1. The composites with excellent flexural strength and thermophysical properties showed significant promise for thermal management applications.

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Section: Introduction mentioning

confidence: 99%

Continuous SiC skeleton reinforced highly oriented graphite flake composites with high strength and specific thermal conductivity

et al. 2022

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“…The increasing power density and decreasing size of electric devices have made their thermal management challenging [1][2][3]. To efficiently dissipate the heat of electronic components, advanced thermal management materials (TMMs) with excellent thermal conductivity (TC, ≥ 250 W/m/K) and low density should be developed.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanotube hybrid on the microstructure and properties of AlN skeleton-reinforced highly oriented graphite flake composites

Zhang

Zhu

Xie

et al. 2022

Ceramics International

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“…Wei et al fabricated anisotropic EP/aluminum nitride honeycomb composites via a freeze-casting method. The obtained materials possessed in-plane and through-plane thermal conductivities of 9.48 and 4.45 W m −1 K −1 at a filler content of 47.26 vol.%, respectively [ 31 ]. Xu et al prepared 3D BN foam-filled EP composites by mixing, decomposition, and infiltration techniques, which exhibited a high thermal conductivity of 6.11 W m −1 K −1 at a filler content of 59.43 vol.% [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Thermal Conductive and Electrical Insulating Epoxy Composites with a Three-Dimensional Filler Network by Sintering Silver Nanowires on Aluminum Nitride Surface

Lee

Kim

2021

Polymers

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In this study, a new fabrication technique for three-dimensional (3D) filler networks was employed for the first time to prepare thermally conductive composites. A silver nanowire (AgNW)– aluminum nitride (AlN) (AA) filler was produced by a polyol method and hot-pressed in mold to connect the adjacent fillers by sintering AgNWs on the AlN surface. The sintered AA filler formed a 3D network, which was subsequently impregnated with epoxy (EP) resin. The fabricated EP/AA 3D network composite exhibited a perpendicular direction thermal conductivity of 4.49 W m−1 K−1 at a filler content of 400 mg (49.86 vol.%) representing an enhancement of 1973% with respect to the thermal conductivity of neat EP (0.22 W m−1 K−1). Moreover, the EP/AA decreased the operating temperature of the central processing unit (CPU) from 86.2 to 64.6 °C as a thermal interface material (TIM). The thermal stability was enhanced by 27.28% (99 °C) and the composites showed insulating after EP infiltration owing to the good insulation properties of AlN and EP. Therefore, these fascinating thermal and insulating performances have a great potential for next generation heat management application.

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Enhanced thermal conductivity of epoxy composites by constructing aluminum nitride honeycomb reinforcements

Cited by 97 publications

References 45 publications

Continuous SiC skeleton reinforced highly oriented graphite flake composites with high strength and specific thermal conductivity

Continuous SiC skeleton reinforced highly oriented graphite flake composites with high strength and specific thermal conductivity

Effect of carbon nanotube hybrid on the microstructure and properties of AlN skeleton-reinforced highly oriented graphite flake composites

Highly Thermal Conductive and Electrical Insulating Epoxy Composites with a Three-Dimensional Filler Network by Sintering Silver Nanowires on Aluminum Nitride Surface

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