Heterostructured BN@Co‐C@C Endowing Polyester Composites Excellent Thermal Conductivity and Microwave Absorption at C Band

Advanced Functional Materials, Год журнала: 2024, Номер 34(19)

Опубликована: Янв. 9, 2024

Abstract The trends of miniaturization, lightweight, and high integration in electronics have brought serious issues heat dissipation electromagnetic compatibility also limited the simultaneous use thermally conductive microwave absorption materials. Therefore, it is imperative to design materials that possess those dual functions. In this work, one‐pot method used anchor zeolitic imidazolate framework ZIF‐67 coated with polydopamine (PDA) on boron nitride (BN) obtain BN@ZIF‐67@PDA. pyrolysis product BN@Co‐C@C as heterostructured conductive/microwave fillers blended polyethylene terephthalate (PET) prepare BN@Co‐C@C/PET composites. When mass ratio BN ZIF‐67@PDA 7.5:1 fraction 7.5 @Co‐C@C 45 wt%, @Co‐C@C/PET composites exhibit excellent thermal conductivities performances. conductivity coefficient 5.37 W m −1 K , which 35.8 times higher than PET (0.15 ), wt% (BN /Co‐C@C)/PET (4.03 ) prepared by directly mixing. minimum reflection loss are −63.1 dB at 4.72 GHz, corresponding effective bandwidth 1.28 GHz (4.08–5.36 GHz), achieving performance C band.

Язык: Английский

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Rapid exfoliation and surface hydroxylation of high-quality boron nitride nanosheets enabling waterborne polyurethane with high thermal conductivity and flame retardancy

Advanced Composites and Hybrid Materials, Год журнала: 2024, Номер 7(1)

Опубликована: Янв. 6, 2024

Язык: Английский

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Sandwich-Like Flexible Breathable Strain Sensor with Tunable Thermal Regulation Capability for Human Motion Monitoring

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(8), С. 10633 - 10645

Опубликована: Фев. 17, 2024

High-performance flexible strain sensors with synergistic and outstanding thermal regulation function are poised to make a significant impact on next-generation multifunctional sensors. However, it has long been intractable optimize the sensing performance high conductivity simultaneously. Herein, novel sandwich-like sensor advanced capability was prepared by assembling electrospun thermoplastic polyurethane (TPU) fibrous membrane, MXene layer, TPU/boron nitride nanosheet (BNNS) composite films. The as-prepared demonstrates wide working range (∼100% strain), an ultrahigh gauge factor (2080.9), satisfactory reliability. Meanwhile, benefiting from uniform dispersion promising orientation of BNNSs in TPU composites, possesses 1.5 W·m–1·K–1, guaranteeing wearer comfort. Additionally, unique structure endows stretchability, breathability, biocompatibility, tunable electromagnetic interference shielding performances. Furthermore, integrated wireless motion monitoring device based this is rationally designed. It exhibits fast response time, recognition range, ability maintain skin temperature during prolonged physical activity. These encouraging findings provide new feasible approach designing high-performance versatile broad applications wearable technology.

Язык: Английский

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High thermal conductivity and low dielectric polyimide nanocomposites using diamine-assisted mechanochemical exfoliation boron nitride and in-situ polymerization under pressure

Chemical Engineering Journal, Год журнала: 2024, Номер 488, С. 150824 - 150824

Опубликована: Март 29, 2024

Язык: Английский

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Highly Thermally Conductive and Flame-Retardant Waterborne Polyurethane Composites with 3D BNNS Bridging Structures via Magnetic Field Assistance

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Фев. 7, 2025

Abstract The microstructure design for thermal conduction pathways in polymeric electrical encapsulation materials is essential to meet the stringent requirements efficient management and runaway safety modern electronic devices. Hence, a composite with three-dimensional network (Ho/U-BNNS/WPU) developed by simultaneously incorporating magnetically modified boron nitride nanosheets (M@BNNS) non-magnetic organo-grafted BNNS (U-BNNS) into waterborne polyurethane (WPU) synchronous molding under horizontal magnetic field. results indicate that continuous in-plane formed M@BNNS aligned along field direction, combined bridging structure established U-BNNS, enable Ho/U-BNNS/WPU exhibit exceptional ( λ // ) through-plane conductivities ⊥ ). In particular, addition of 30 wt% 5 composites reach 11.47 2.88 W m −1 K , respectively, which representing 194.2% improvement compared single orientation M@BNNS. Meanwhile, exhibits distinguished capabilities as interface LED chips. also demonstrate excellent flame retardancy, peak heat release total reduced 58.9% 36.9%, WPU. Thus, this work offers new insights thermally conductive structural flame-retardant systems polymer composites, presenting broad application potential packaging fields.

Язык: Английский

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Unraveling the potential of MXenes as multifunctional cathodes: Innovations and challenges for next-generation energy storage systems

Materials Science and Engineering R Reports, Год журнала: 2025, Номер 164, С. 100975 - 100975

Опубликована: Март 13, 2025

Язык: Английский

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Low-dimensional van der Waals materials for linear-polarization-sensitive photodetection: materials, polarizing strategies and applications

Materials Futures, Год журнала: 2023, Номер 3(1), С. 012301 - 012301

Опубликована: Сен. 14, 2023

Abstract Detecting light from a wealth of physical degrees freedom (e.g. wavelength, intensity, polarization state, phase, etc) enables the acquirement more comprehensive information. In past two decades, low-dimensional van der Waals materials (vdWMs) have established themselves as transformative building blocks toward lensless optoelectronics, which is highly beneficial for optoelectronic system miniaturization. This review provides overview on recent development vdWM polarized photodetectors. To begin with, exploitation pristine 1D/2D vdWMs with immanent in-plane anisotropy and related heterostructures filterless polarization-sensitive photodetectors introduced. Then, we systematically epitomized various strategies to induce photosensitivity enhance degree photodetectors, including quantum tailoring, construction core–shell structures, rolling engineering, ferroelectric regulation, strain etc, emphasis fundamental principles. Following that, ingenious applications based multiplexing optical communications enhanced-contrast imaging, been presented. end, current challenges along future prospects this burgeoning research field underscored. On whole, depicts fascinating landscape next-generation high-integration multifunctional systems.

Язык: Английский

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Reinforcement of microwave absorption and thermal conductivity of polydimethylsiloxane achieved by metal-organic framework-derived carbon nanotube/boron nitride flake heterogeneous structure

Carbon, Год журнала: 2024, Номер 227, С. 119242 - 119242

Опубликована: Май 13, 2024

Язык: Английский

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Incorporation of hexagonal boron nitride and multi-walled carbon nanotube for motion sensing triboelectric nanogenerators

Composites Part B Engineering, Год журнала: 2024, Номер 272, С. 111193 - 111193

Опубликована: Янв. 4, 2024

Язык: Английский

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Boron Nitride Nanosheets: Thickness‐Related Properties and Applications

Advanced Functional Materials, Год журнала: 2024, Номер 34(40)

Опубликована: Май 16, 2024

Abstract Owing to its exceptional properties and wide‐ranging potential applications from aerospace medicine, hexagonal boron nitride ( h ‐BN) has garnered considerable attention over the past decades. Boron nanosheets (BNNSs), atomically thin ‐BN, not only inherit most of outstanding ‐BN but also exhibit superior characteristics compared their bulk counterpart due reduced thickness, such as special adsorption behaviors enhanced thermal conductivity. Furthermore, BNNSs display distinct thickness‐dependent graphene other 2D materials, unique mechanical response under indentation. This feature article provides an overview thickness‐related BNNSs, primarily derived mechanically exfoliated single crystals. These span various domains, including Raman signatures, molecule adsorption‐induced conformational changes, properties, conductivity, expansion coefficients. Moreover, explores underlying mechanisms governing these atomic‐scale thickness effects. Leveraging investigates diverse encompassing surface‐enhanced spectroscopy, metal‐enhanced fluorescence, isotropic management.

Язык: Английский

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