Ultrahigh Thermal Conductivity of Interface Materials by Silver‐Functionalized Carbon Nanotube Phonon Conduits

Suh, Daewoo; Moon, Choong Man; Kim, Duckjong; Baik, Seunghyun

doi:10.1002/adma.201600642

Cited by 250 publications

(166 citation statements)

References 43 publications

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“…[60] Figure 9 presents the fabrication process of flexible thermoelectric generator (TEG) by screen printing. [64] For screen printing techniques, porous structures may be created during the printing process that can reduce the conductivity of printed parts. The authors demonstrated that the screen printing process helps to increase productivity of TEG.…”

Section: Screen Printingmentioning

confidence: 99%

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Recent Advances on 3D Printing Technique for Thermal‐Related Applications

et al. 2018

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Advances in ink formulation and printing techniques make producing material systems with new and versatile characteristics and functionalities possible. Additive manufacturing or 3D printing enables fabricating complex structures at a faster production rate using different types of materials for various applications. Recently, 3D printing methods are being studied for thermal‐related applications. In this paper, the authors review recent progress of materials and printing techniques for thermal application devices using composite materials.

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Section: Screen Printingmentioning

confidence: 99%

“…[64,65] However, these techniques still lack the ability to adequately control, are time consuming, and limited to achieve large-scale production. Different alignment methods have been investigated, such as electrical flocking, magnetic field assisted alignment, and rolling.…”

Section: Future Of 3d Printing For Thermal Related Application Devicesmentioning

confidence: 99%

Recent Advances on 3D Printing Technique for Thermal‐Related Applications

et al. 2018

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“…Thermal interface materials (TIMs) are usually placed between the heated device and the thermal sink to fill the air‐filled voids to efficiently improve the heat transmission . Polymer composites have attracted extensive attention as TIMs because of their pervasive application . Thermal grease is the most widely used TIMs that is composed of a polymer matrix and inorganic filers with high thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effects on the enhancement of thermal conductive properties of thermal greases

Wang

2019

J of Applied Polymer Sci

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Efficient heat dissipation from electronic devices with high‐degree integration and high‐power density has become an urgent and complex problem. We report here novel thermal greases with an enhanced thermal conductivity using graphene flakes (GFs), hexagonal boron nitride (h‐BN), and hydroxypropyl cellulose (HPC) as fillers. The obtained GF/h‐BN/HPC thermal grease at 23 vol % h‐BN loading exhibits a thermal conductivity enhancement 555%, compared with the pure PDMS matrix, and also about 50, 169, and 115% higher than that with GF/h‐BN, h‐BN/HPC and h‐BN as the filler for the thermal grease, respectively. We attribute it to the synergistic effects among GF, h‐BN, and HPC, due to the formation of thermally conductive networks. This study provides a strategy for preparing thermal greases for thermal management applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47726.

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“…[1][2][3] For platelet-like or rodlike fillers with high aspect ratio such as natural graphite (NG), boron nitride (BN), carbon nanotube, silicon carbide (SiC), graphene, and so on, the thermal conductivity along the longitudinal direction of the fillers is usually much higher than that in the perpendicular direction. [1][2][3] For platelet-like or rodlike fillers with high aspect ratio such as natural graphite (NG), boron nitride (BN), carbon nanotube, silicon carbide (SiC), graphene, and so on, the thermal conductivity along the longitudinal direction of the fillers is usually much higher than that in the perpendicular direction.…”

Section: Introductionmentioning

confidence: 99%

A Facile Route to Fabricate Highly Anisotropic Thermally Conductive Elastomeric POE/NG Composites for Thermal Management

Feng

Bai

Shao

et al. 2017

Adv Materials Inter

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Owing to the demand for directional heat dissipation, some technologies have been developed to fabricate polymer-based composites with anisotropic thermal conductivity, and it has been demonstrated that the anisotropic thermal conductivity of composites can be achieved by varying orientation of fillers. The orientation or directional alignment of fillers in the matrix by using the solution-based methods is an important strategy [18] such as vacuum filtration, [19][20][21][22] spin casting, [23] solution casting, [24,25] magnetic fields, [26] electric fields, [27] and self-assembly. [28][29][30][31] Zhao et al. [29] used self-organization strategy to align thermally reduced graphene oxide (TRG) sheets in poly(benzobisoxazole). The composites presented a thermally conductive anisotropy with a highly effective thermal conductivity of 50 W m −1 K −1 along the TRG aligning direction and the thermal conductivity in the direction perpendicular to the TRG alignment was very low. Kuang et al. [32] utilized two-roll milling to fabricate hexagonal boron nitride nanosheets (BNNS)/silicon rubber composite sheets with anisotropic thermal conductivity, and the sheets showed higher thermal conductivity of 5.47 W m −1 K −1 in the orientating direction of BNNS.However, in many cases, the preferred direction to show a high thermal conductivity is not the direction in which the composites do have a high thermal conductivity. [33] Although many methods have been developed to fabricate polymer composite fibers, films, or sheets which have high in-plane thermal conductivity in the oriented direction of the fillers, [9,[34][35][36] a high thermal conductivity in the through-plane direction is more desired as the case in thermal interfacial materials (TIMs), thermal conduction greases, and thermal conduction electronic substrates. [37][38][39][40][41] It has been reported that the bulk thermal conductivity required for TIM should be larger than 4 W m −1 K −1 , which can only be satisfied by the thermal conductivity in the in-plane direction. [42] Yao et al. [43] used silver nanoparticles to decorate the fillers and to improve the through-plane thermal conductivity of BNNS/SiC nanowire bioinspired composite paper. However, the through-plane thermal conductivity of the composite paper was only 1.80 W m −1 K −1 when the filler content was as high as 90 wt%. Besides, magnetic field, electric field, and chemical vapor deposition can be used to align fillers in low-viscosity matrix fluids, but generally the alignment Highly anisotropic polyolefin elastomer (POE)/natural graphite (NG) composites with high through-plane thermal conductivity and excellent mechanical properties, in which NG sheet perfectly aligns along one direction, are prepared by two-roll milling, hot compression, and mechanical cutting. The through-plane thermal conductivity coefficient of POE/NG composites is markedly improved to be 13.27 W m −1 K −1 at an NG loading of 49.30 vol%. When the composite is used as a thermal management material, it shows excellent heat dissipatin...

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Ultrahigh Thermal Conductivity of Interface Materials by Silver‐Functionalized Carbon Nanotube Phonon Conduits

Cited by 250 publications

References 43 publications

Recent Advances on 3D Printing Technique for Thermal‐Related Applications

Recent Advances on 3D Printing Technique for Thermal‐Related Applications

Synergistic effects on the enhancement of thermal conductive properties of thermal greases

A Facile Route to Fabricate Highly Anisotropic Thermally Conductive Elastomeric POE/NG Composites for Thermal Management

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