Facile Method to Fabricate Highly Thermally Conductive Graphite/PP Composite with Network Structures

Feng, Chang‐Ping; Ni, Hai‐Ying; Chen, Jun; Yang, Jie

doi:10.1021/acsami.6b03723

Cited by 159 publications

(79 citation statements)

References 40 publications

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“…A higher λ value of 1.95 W/ mK was achieved for the graphite/PS composite with 34 vol% colloidal graphite. Feng et al [142] reported one facile method to fabricate highly thermally conductive graphite/PP composites. The obtained λ value of the graphite/PP composite with 21.2 vol% graphite was markedly improved to 5.40 W/mK, mainly ascribed to graphite's orientation and formed thermally conductive networks.…”

Section: Carbon-based Fillersmentioning

confidence: 99%

A review on thermally conductive polymeric composites: classification, measurement, model and equations, mechanism and fabrication methods

Yang

Liang

et al. 2018

Adv Compos Hybrid Mater

302

124

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With the fast-developing miniaturization and integration of microelectronics packaging materials, ultrahigh-voltage electrical devices, light-emitting diodes (LEDs), and in areas which require good heat dissipation and low thermal expansion, the investigations on the polymeric composites with highly thermal conductivities and excellent thermal stabilities are urgently required, which would be beneficial to transferring the heat to the outside of the products, finally to effectively avoid substantial overheating and prolong their working life. Our article reviews recent progress in the classification, measurement methods, model and equations, mechanisms, commonly used thermally conductive fillers, and the correlative fabrication methods for the thermally conductive polymeric composites, aiming to understand and grasp how to enhance the λ value effectively. And future perspectives, focusing scientific problems and technical difficulties of the present thermally conductive polymeric composites are also described and evaluated.

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Section: Carbon-based Fillersmentioning

confidence: 99%

A review on thermally conductive polymeric composites: classification, measurement, model and equations, mechanism and fabrication methods

Yang

Liang

et al. 2018

Adv Compos Hybrid Mater

302

124

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“…[50,51] As shown in Figure 3a,b, the XRD diffraction patterns obtained from Sample A and Sample B are totally different, and the significant difference of diffraction peaks detected from the top of Sample A and B clearly shows the perfect orientation of NG. [50,51] As shown in Figure 3a,b, the XRD diffraction patterns obtained from Sample A and Sample B are totally different, and the significant difference of diffraction peaks detected from the top of Sample A and B clearly shows the perfect orientation of NG.…”

Section: Resultsmentioning

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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“…Carbon-based materials and metallic fillers such as graphite [5], graphite/graphene nanoplateles (GNPs) [6,7], graphene [8], carbon nanotubes (CNTs) [9], carbon fiber [10,11], silver particles, silver nanowires [12], and copper nanowires [2,13] have been widely utilized to fabricate polymer-based TIMs owing to their extraordinary inherent thermal conductivity [14,15]. However, the incorporation of electrically conductive fillers will inevitably cause the great deterioration of electrical insulation performance, which hinders the wide use of these TIMs in next-generation microelectronics devices [16,17] such as LED devices with chips directly placing on the heat sink, single chip packages [18], and high-voltage devices.…”

Section: Introductionmentioning

confidence: 99%

“…For example, pure graphene films with a high in-plane thermal conductivity of 1940±113 W m −1 K −1 have been fabricated [31]. [47][48][49], and constructing a segregated structure [5,[50][51][52]. Vertically aliened CNT (VACNT) composites fabricating by the CVD method can provide a high through-plane thermal conductivity and can be used as TIMs [53].…”

Section: Introductionmentioning

confidence: 99%

“…Vertically aliened CNT (VACNT) composites fabricating by the CVD method can provide a high through-plane thermal conductivity and can be used as TIMs [53]. The thermal resistance and through-plane thermal conductivity of VACNT films has been reported as low as 0. were fabricated in which the graphite flakes constructed a 3D thermally conductive network [5]. The through-plane thermal conductivity of BN-based composites reported recently was summarized in Table 1.…”

Section: Introductionmentioning

confidence: 99%

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Electrically insulating POE/BN elastomeric composites with high through-plane thermal conductivity fabricated by two-roll milling and hot compression

Feng

Bai

Bao

et al. 2017

Adv Compos Hybrid Mater

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In this work, we reported a kind of electrical insulating, highly through-plane thermally conductive polyolefin elastomer (POE)-based composites filled with commercial boron nitride (BN) fabricated by a conventional melt-mixing method of two-roll milling, followed by hot compression and mechanical cutting. The as-fabricated composites with BN flakes perfectly aligning vertically in the matrix revealed high through-plane thermal conductivity (6.94 W m −1 K −1 at a BN content of 43.75 vol%), outstanding electrical insulation (4.34× Ω cm at a BN content of 43.75 vol%), and quite good mechanical properties. This fabrication procedure features facile process, industrial equipment, and easy industrialization, and the as-prepared composites with outstanding comprehensive performance are promising for thermal interface materials (TIMs) application.

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Facile Method to Fabricate Highly Thermally Conductive Graphite/PP Composite with Network Structures

Cited by 159 publications

References 40 publications

A review on thermally conductive polymeric composites: classification, measurement, model and equations, mechanism and fabrication methods

A review on thermally conductive polymeric composites: classification, measurement, model and equations, mechanism and fabrication methods

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

Electrically insulating POE/BN elastomeric composites with high through-plane thermal conductivity fabricated by two-roll milling and hot compression

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