Design of Heat-Conductive hBN–PMMA Composites by Electrostatic Nano-Assembly

Yokoi, Atsushi; Tan, Wei; Kuroda, Taichi; Kawamura, Go; Matsuda, Atsunori

doi:10.3390/nano10010134

Cited by 14 publications

(7 citation statements)

References 24 publications

(38 reference statements)

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“…PMMA/h-BN fabricated in various size combinations and used in h-BN/ PMMA composite materials possess promise in the electronic and coating industry for heat-dissipation needs. [403][404][405][406] Likewise, h-BN has been used as filler in other polymer matrixes such as PVA, [407][408][409][410][411] polyurethane (TPU), [412][413][414] rubber, [415,416] and epoxy [417][418][419][420][421] to enhance both the mechanical and thermal properties.…”

Section: H-bn In Thermal Applicationsmentioning

confidence: 99%

Structure, Properties and Applications of Two‐Dimensional Hexagonal Boron Nitride

et al. 2021

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Hexagonal boron nitride (h-BN) has emerged as a strong candidate for twodimensional (2D) material owing to its exciting optoelectrical properties combined with mechanical robustness, thermal stability, and chemical inertness. Super-thin h-BN layers have gained significant attention from the scientific community for many applications, including nanoelectronics, photonics, biomedical, anti-corrosion, and catalysis, among others. This review provides a systematic elaboration of the structural, electrical, mechanical, optical, and thermal properties of h-BN followed by a comprehensive account of stateof-the-art synthesis strategies for 2D h-BN, including chemical exfoliation, chemical, and physical vapor deposition, and other methods that have been successfully developed in recent years. It further elaborates a wide variety of processing routes developed for doping, substitution, functionalization, and combination with other materials to form heterostructures. Based on the extraordinary properties and thermal-mechanical-chemical stability of 2D h-BN, various potential applications of these structures are described.The ORCID identification number(s) for the author(s) of this article can be found under

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Section: H-bn In Thermal Applicationsmentioning

confidence: 99%

Structure, Properties and Applications of Two‐Dimensional Hexagonal Boron Nitride

et al. 2021

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“…A solution mixing method was used to prepare PMMA based composites blended with h-BN [16,17]. An electrostatic nano-assembly method was also carried on to make h-BN/PMMA in order to promote the heat-conducting properties of the composite [18]. Moreover, PMMA composites were reinforced with boron nitride nanotubes (BNNT) by using in-situ polymerization process to enhance the thermal conductivity of the nanocomposite [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Hexagonal Boron nitride Nanopowder Reinforcement and Mixing Methods on Physical and Mechanical Properties of Self-Cured PMMA for Dental Applications

Alqahtani

2020

Materials

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We report for the first time on the effect of biocompatible hexagonal boron nitride (h-BN) nanopowder reinforcement with different concentrations on the structural and mechanical properties of fabricated self-cured polymethyl methacrylate (PMMA) based dental materials (GC UNIFAST III). A comparison among the structural and mechanical properties between hand and ultrasonic mixing is also presented. Fabricated specimens were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR), micro indentation, and flexural strength techniques. The ultrasonic mixing method provides better sample textures of the composite as compared to hand mixing. It is found that XRD and IR intensity of the peaks increases with the increase of h-BN concentration due to nanocomposite formation. The additions of h-BN nanoparticles to the acrylic resin enhanced the hardness and the flexibility values of the composites. Independently of the mixing method used, adding h-BN nanopowder relatively increases the Vickers Hardness numbers (VH) and Flexural Strength (FS) of the unmodified materials. However, using ultrasonic mixing method combined with h-BN nanopowder increases VH numbers to 300% and FS values to 550% with respect to the unmodified sample made by hand mixing. The results obtained are very encouraging and will support future research in vivo, to confirm whether PMMA loaded with h-BN nanoparticles is an improvement compared to current dental restorative materials.

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“…Hexagonal BN (hBN) is a good heat-conductive material as it exhibits excellent thermal conductivity and good electrical insulation. The unique honeycomb-configured sp 2 -bonded boron and nitrogen promote anisotropic thermal conductivity with in-plane and out-of-plane thermal conductivity of 600 and 30 W·m −1 ·K −1 , respectively [ 4 , 5 ]. Due to the high mechanical strength, chemical stability, and high thermal conductivity of hBN, it is widely used in different applications such as high-temperature ceramics and electronic packaging [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Controlled Fabrication of Hexagonal Boron Nitride Incorporated Composite Granules Using the Electrostatic Integrated Granulation Method

et al. 2023

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Despite the availability of nano and submicron-sized additive materials, the controlled incorporation and utilization of these additives remain challenging due to their difficult handling ability and agglomeration-prone properties. The formation of composite granules exhibiting unique microstructure with desired additives distribution and good handling ability has been reported using the electrostatic integrated granulation method. This study demonstrates the feasible controlled incorporation of two-dimensional hexagonal boron nitride (hBN) sheets with alumina (Al2O3) particles, forming Al2O3–hBN core–shell composite granules. The sintered artifacts obtained using Al2O3–hBN core–shell composite granules exhibited an approximately 28% higher thermal conductivity than those obtained using homogeneously hBN-incorporated Al2O3 composite granules. The findings from this study would be beneficial for developing microstructurally controlled composite granules with the potential for scalable fabrication via powder-metallurgy inspired methods.

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Design of Heat-Conductive hBN–PMMA Composites by Electrostatic Nano-Assembly

Cited by 14 publications

References 24 publications

Structure, Properties and Applications of Two‐Dimensional Hexagonal Boron Nitride

Structure, Properties and Applications of Two‐Dimensional Hexagonal Boron Nitride

Effect of Hexagonal Boron nitride Nanopowder Reinforcement and Mixing Methods on Physical and Mechanical Properties of Self-Cured PMMA for Dental Applications

A Novel Controlled Fabrication of Hexagonal Boron Nitride Incorporated Composite Granules Using the Electrostatic Integrated Granulation Method

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