Construction of 3D interconnected and aligned boron nitride nanosheets structures in phthalonitrile composites with high thermal conductivity

Liu, Xianyuan; Zhou, Hang; Wang, Zilong; Han, Xu; Zhao, Zehua; Guo, Ying; Liu, Wenbin; Wang, Jun; Zhao, Tong

doi:10.1016/j.compscitech.2022.109289

Cited by 20 publications

(2 citation statements)

References 38 publications

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“…The heat resistance of nanocomposites increases with Al- α -Fe 2 O 3 introduction, which indicates α -Fe 2 O 3 @ANFs/Al- α -Fe 2 O 3 nanocomposites have a higher residual weight ratio at 800 °C than pure ANFs. The introduction of inorganic materials can further improve the heat resistance of polymers [ 31 , 32 ]. It can better elucidate this process of the nanocomposites combining the XRD in Fig.…”

Section: Resultsmentioning

confidence: 99%

Structural Engineering of Hierarchical Magnetic/Carbon Nanocomposites via In Situ Growth for High-Efficient Electromagnetic Wave Absorption

Liu,

Zhou,

Xue

et al. 2024

Nano-Micro Lett.

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Materials exhibiting high-performance electromagnetic wave absorption have garnered considerable scientific and technological attention, yet encounter significant challenges. Developing new materials and innovative structural design concepts is crucial for expanding the application field of electromagnetic wave absorption. Particularly, hierarchical structure engineering has emerged as a promising approach to enhance the physical and chemical properties of materials, providing immense potential for creating versatile electromagnetic wave absorption materials. Herein, an exceptional multi-dimensional hierarchical structure was meticulously devised, unleashing the full microwave attenuation capabilities through in situ growth, self-reduction, and multi-heterogeneous interface integration. The hierarchical structure features a three-dimensional carbon framework, where magnetic nanoparticles grow in situ on the carbon skeleton, creating a necklace-like structure. Furthermore, magnetic nanosheets assemble within this framework. Enhanced impedance matching was achieved by precisely adjusting component proportions, and intelligent integration of diverse interfaces bolstered dielectric polarization. The obtain Fe3O4-Fe nanoparticles/carbon nanofibers/Al-Fe3O4-Fe nanosheets composites demonstrated outstanding performance with a minimum reflection loss (RLmin) value of − 59.3 dB and an effective absorption bandwidth (RL ≤ − 10 dB) extending up to 5.6 GHz at 2.2 mm. These notable accomplishments offer fresh insights into the precision design of high-efficient electromagnetic wave absorption materials.

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Section: Resultsmentioning

confidence: 99%

Structural Engineering of Hierarchical Magnetic/Carbon Nanocomposites via In Situ Growth for High-Efficient Electromagnetic Wave Absorption

Liu,

Zhou,

Xue

et al. 2024

Nano-Micro Lett.

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“…As illustrated in Figure 9a, BNNS and phthalonitrile (APN) microspheres (Figure 9c) were co-assembled to obtain shell@core microspheres (BNNS@APN) (Figure 9d,e), then hot-pressed to prepare a composite with 3D interconnected BNNS networks. 127 As a result, the asprepared composites reached a superhigh thermal conductivity of 4.282 W/(mÁK), which reached 16.16 times of pristine phthalonitrile resin. Similarly, Jiang et al prepared polyphenylene sulfide@ boron nitride (PPS@BN) composites whose thermal conductivity showed a 169% enhancement in comparison with melt-blended composite.…”

Section: Hot-pressing Of Segregated Structured Compositesmentioning

confidence: 92%

Controllable exfoliation of hexagonal boron nitride and tailored three‐dimensional network for highly thermally conductive polymer composites

Lin,

Dong,

Chen

et al. 2023

J of Applied Polymer Sci

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Thermally conductive but electrically insulating composites have become significant components for efficient thermal dissipation in electronic devices due to their miniaturization, integration, and functionalization. Over the past decade, extensive efforts have been dedicated to improving the thermal conductivity of polymer‐based composites through incorporating various thermally conductive fillers. In particular, boron nitride nanosheets (BNNS) with outstanding intrinsic thermal conductivity, electrical insulation, and chemical stability, have sparked intensive interest from researchers. However, BNNS usually suffers from severe aggregation in polymer matrices, leading to high interfacial thermal resistance. Rational construction of three‐dimensional (3D) BNNS continuous networks is crucial for efficient thermal transport and has also been established as a feasible and effective approach to achieve significant enhancement of thermal conductivity for polymer/BNNS composites. In this brief review, we summarized and introduced recent progress on the controllable exfoliation of h‐BN and tailored three‐dimensional networks for highly thermally conductive polymer composites. The fabrication strategies for 3D BNNS networks and the structure–properties relationships of polymer/BNNS composites are highlighted. Finally, the opportunities and challenges for polymer/BNNS composites based on 3D thermally conductive networks are prospected.

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Preparation of quasi-isotropic thermal conductive composites by interconnecting spherical alumina and 2D boron nitride flakes

et al. 2023

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Construction of 3D interconnected and aligned boron nitride nanosheets structures in phthalonitrile composites with high thermal conductivity

Cited by 20 publications

References 38 publications

Structural Engineering of Hierarchical Magnetic/Carbon Nanocomposites via In Situ Growth for High-Efficient Electromagnetic Wave Absorption

Structural Engineering of Hierarchical Magnetic/Carbon Nanocomposites via In Situ Growth for High-Efficient Electromagnetic Wave Absorption

Controllable exfoliation of hexagonal boron nitride and tailored three‐dimensional network for highly thermally conductive polymer composites

Preparation of quasi-isotropic thermal conductive composites by interconnecting spherical alumina and 2D boron nitride flakes

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