Enhancing the heat and load transfer efficiency by optimizing the interface of hexagonal boron nitride/elastomer nanocomposites for thermal management applications

Zhang, Yinhang; Choi, Jang Rak; Park, Soo‐Jin

doi:10.1016/j.polymer.2018.03.067

Cited by 140 publications

(49 citation statements)

References 29 publications

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“…Polymers are extensively used in various applications because of their wide range of properties. Filler materials, such as carbon black (CB), silica, and clay, are often added to polymers to produce composites with tailored physical and mechanical properties, such as strength, dimensional stability, surface hardness, thermal stability, and electrical conductivity, while reducing their cost. In order for the polymer composite to achieve the properties required for a particular application, the filler material must have the appropriate morphology, particle size distribution, surface characteristics, and dispersion capability in the polymer matrix .…”

Section: Introductionmentioning

confidence: 99%

Thermal and mechanical enhancement of styrene–butadiene rubber by filling with modified anthracite coal

Tan

Hong-zhi

Wei

et al. 2019

J of Applied Polymer Sci

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Anthracite is the highest rank of coal with a layered structure similar to that of graphite. Here, styrene-butadiene rubber/modified anthracite (MA) composites were prepared and analyzed. The microstructure and dispersion of the anthracite were improved by ball milling with the modifier bis-(γ-triethoxysilylpropyl)-tetrasulfide (KH-Si69). The particle size of the modified coal was decreased significantly tõ 3 μm, while surface interactions with the modifier yielded enhanced lamellar morphology and hydrophobic surfaces. The anthracite lamellae were well dispersed in the rubber matrix, providing good reinforcement; the tensile strength of the composite exceeded that of a composite with carbon black (CB) N660 filler (16.65 vs. 14.68 MPa). Moreover, low-level CB or silica compositing further promoted the dispersion of coal particles in the rubber, effectively enhancing the mechanical reinforcement behavior of the coal particles as well as the thermal stability of the rubber composite. Notably, it led to a 10.63% improvement in tensile strength and a 9.96 C increase in the 5% mass loss temperature compared to the composite with a single MA filler.

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Section: Introductionmentioning

confidence: 99%

Thermal and mechanical enhancement of styrene–butadiene rubber by filling with modified anthracite coal

Tan

Hong-zhi

Wei

et al. 2019

J of Applied Polymer Sci

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“…On one hand, the solid solution deriving from inter-diffusion between the TiC coating and Cu matrix can trigger a growth of phonon scattering thus deteriorates the heat transfer ability [17,18]. On the other hand, the formation of amorphous layer between the GF and TiC interfacial layer not only can induce the phonon scattering but also possess extremely low TC, resulting in a reduction in the interfacial thermal conductance [34,35]. Although the introduction of TiC coating reduces the TC, whereas the TiC-coated graphite flake/Cu composites still exhibit a very high value.…”

Section: Bending Strengthmentioning

confidence: 99%

“…The highest TC of TiC coated graphite flake/Cu composites reaches 571 W m −1 K −1 , which is acquired at the volume fraction of 60%. TC, resulting in a reduction in the interfacial thermal conductance [34,35]. Although the introduction of TiC coating reduces the TC, whereas the TiC-coated graphite flake/Cu composites still exhibit a very high value.…”

Section: Bending Strengthmentioning

confidence: 99%

Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface

Zhang

Liu

et al. 2019

Metals

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In this work, TiC coating was successfully deposited on a graphite flake surface via molten salt technique, for the purpose of promoting the interfacial connection between Cu and graphite flake. Vacuum hot pressing was then employed to prepare TiC-coated graphite flake/Cu composite. The results indicate that introducing TiC coating on graphite flake surface can evidently reduce the pores and gaps at the interface, resulting in a significant improvement on the bending strength. When the TiC-coated graphite flake content is 60 vol%, the bending strength is increased by 58% compared with the uncoated one. The coefficient of thermal expansion dropped from 6.0 ppm·K−1 to 4.4 ppm·K−1, with the corresponding thermal conductivity as high as 571 W·m−1·K−1. The outstanding thermal conductivity, apposite coefficient of thermal expansion, as well as superior processability, make TiC-coated graphite flake/Cu composite a satisfactory electronic packaging material with vast prospect utilized in microelectronic industry.

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“…Reactive blending can generate compatibilizers in situ at the interface and consequently improve the compatibility and interfacial adhesion between two components. Therefore, reactive blending with elastomers is a simple and practical approach to enhance the toughness of PLA . For instance, Wang et al produced super‐tough PLA/epoxidized poly(styrene‐ b ‐butadiene‐ b ‐styrene) (ESBS) blends via adjusting the epoxidation degree of ESBS.…”

Section: Introductionmentioning

confidence: 99%

Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

Yang

et al. 2020

Journal of Polymer Science

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The interfacial grafting copolymerization and the compatibility between poly(lactic acid) (PLA) and ethylene-vinyl acetate-glycidyl methacrylate elastomer (EVM-GMA) are adjusted by varying the blending temperatures. High temperature is favored to the grafting reaction between epoxy groups of the EVM-GMA and terminal groups of the PLA, resulting in better compatibility between the two components. Taking PLA/EVM-GMA (80/20) blend as an example, an increase in blending temperature from 175 to 230 C led to a 42.8% reduction in EVM-GMA particle size, and consequently 137.8% and 52.6% increases in elongation at break (Eb) and notched impact strength (NIS), respectively. In comparison, the Eb and NIS of PLA/EVM blends without any interfacial reaction deteriorated dramatically due to thermal degradation of the PLA at high(er) temperatures. Furthermore, the PLA/EVM-GMA blend prepared at 230 C possesses both excellent toughness (Eb > 60%, NIS > 60 kJ m −2 ) and high heat deflection temperature (>90 C) after annealing at 100 C. This work provides a new approach in designing highperformance biobased materials which may broaden the application range of PLA in engineering areas.Although reactive blending with elastomers has been reported as an effective method for toughening of PLA, the effect of blending temperature, that is, the extent of in situ grafting reactions on the mechanical properties of PLA/elastomer blends has rarely been studied. The higher the blending temperature is, the higher reaction extent and compatibilization between PLA and elastomer. However, it may also lead to thermal degradation of PLA matrix, which is not conducive to the final mechanical performances (e.g., tensile strength).Additional supporting information may be found in the online version of this article.

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Enhancing the heat and load transfer efficiency by optimizing the interface of hexagonal boron nitride/elastomer nanocomposites for thermal management applications

Cited by 140 publications

References 29 publications

Thermal and mechanical enhancement of styrene–butadiene rubber by filling with modified anthracite coal

Thermal and mechanical enhancement of styrene–butadiene rubber by filling with modified anthracite coal

Improvement in Mechanical and Thermal Properties of Graphite Flake/Cu Composites by Introducing TiC Coating on Graphite Flake Surface

Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

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