Advanced Composites and Hybrid Materials, Год журнала: 2024, Номер 7(4)
Опубликована: Июнь 25, 2024
Язык: Английский
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(17)
Опубликована: Фев. 9, 2024
The development of highly thermally conductive composites that combine visible light/infrared camouflage and information encryption has been endowed with great significance in facilitating the application 5G communication technology military fields. This work uses aramid nanofibers (ANF) as matrix, hetero-structured silver nanowires@boron nitride nanosheets (AgNWs@BNNS) prepared by situ growth fillers, which are combined to fabricate sandwich structured electrically insulating (BNNS/ANF)-(AgNWs@BNNS)-(BNNS/ANF) (denoted BAB) composite films "filtration self-assembly, air spraying, hot-pressing" method. When mass ratio AgNWs@BNNS BNNS is 1 : total fraction 50 wt %, BAB film maximum in-plane thermal conductivity coefficient (λ
Язык: Английский
Процитировано
131
JACS Au, Год журнала: 2023, Номер 3(12), С. 3424 - 3435
Опубликована: Ноя. 28, 2023
The low intrinsic thermal conduction and high dielectric properties of epoxy resins have significantly limited their applications in electrical electronic devices with integration, frequency, power, miniaturization. Herein, a liquid crystalline (LCE) monomer biphenyl mesogenic unit was first synthesized through an efficient one-step reaction. Subsequently, bisphenol AF (BPAF) containing low-polarizable −CF3 groups 4,4′-diaminodiphenylmethane (DDM) were applied to cure the LCE commercial diglycidyl ether A-type (E-51), respectively, afford four kinds various conductivity dielectricity values. Owing dual effect microscopically stacking mesogens contribution fluorine formation crystallinity, ordered microstructures nematic crystal phase formed within cross-linking network as confirmed by polarized optical microscopy X-ray diffraction. Consequently, phonon scattering suppressed, improved considerably 0.38 W/(m·K), nearly twice that E-51 cured DDM (0.20 W/(m·K)). Additionally, microstructure ultralow polar BPAF enabled resin exhibit remarkably lower stable constant (ε) loss tangent (tan δ) over both frequencies compared DDM. ε decreased from 3.40 2.72 while tan δ 0.044 0.038 at 10 GHz. This work presents scalable facile strategy for breaking bottleneck making simultaneously inherent performance.
Язык: Английский
Процитировано
78
Progress in Materials Science, Год журнала: 2024, Номер 148, С. 101362 - 101362
Опубликована: Сен. 8, 2024
Язык: Английский
Процитировано
40
Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152438 - 152438
Опубликована: Май 21, 2024
Язык: Английский
Процитировано
37
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 7, 2024
Abstract The challenges associated with heat dissipation in high‐power electronic devices used communication, new energy, and aerospace equipment have spurred an urgent need for high‐performance thermal interface materials (TIMs) to establish efficient transfer pathways from the heater (chip) sinks. Recently, emerging 2D materials, such as graphene boron nitride, renowned their ultrahigh basal‐plane conductivity capacity facilitate cross‐scale, multi‐morphic structural design, found widespread use fillers production of TIMs. To deepen understanding material‐based TIMs, this review focuses primarily on nitride‐based exploring structures, properties, applications. Building foundation, developmental history these TIMs is emphasized a detailed analysis critical potential solutions provided. Additionally, preparation application some other novel materials‐based are briefly introduced, aiming offer constructive guidance future development
Язык: Английский
Процитировано
36
Nano Energy, Год журнала: 2024, Номер 124, С. 109497 - 109497
Опубликована: Март 16, 2024
Язык: Английский
Процитировано
33
Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Май 21, 2024
Skin-attachable electronics have garnered considerable research attention in health monitoring and artificial intelligence domains, whereas susceptibility to electromagnetic interference (EMI), heat accumulation issues, ultraviolet (UV)-induced aging problems pose significant constraints on their potential applications. Here, an ultra-elastic, highly breathable, thermal-comfortable epidermal sensor with exceptional UV-EMI shielding performance remarkable thermal conductivity is developed for high-fidelity of multiple human electrophysiological signals. Via filling the elastomeric microfibers thermally conductive boron nitride nanoparticles bridging insulating fiber interfaces by plating Ag (NPs), interwoven conducting network (0.72 W m
Язык: Английский
Процитировано
32
Small Methods, Год журнала: 2024, Номер unknown
Опубликована: Март 20, 2024
Abstract The relentless drive toward miniaturization in microelectronic devices has sparked an urgent need for materials that offer both high thermal conductivity (TC) and excellent electrical insulation. Thermal interface (TIMs) possessing these dual attributes are highly sought after modern electronics, but achieving such a combination proven to be formidable challenge. In this study, cutting‐edge solution is presented by developing boron nitride (BN) graphite films layered silicone rubber composites with exceptional TC insulation properties. Through carefully devised stacking‐cutting method, the orientation degree of BN successfully preserved, resulting unprecedented through‐plane 23.7 Wm −1 K remarkably low compressive modulus 4.85 MPa. Furthermore, properties composites, including resistance resilience rate, make them reliable durable option various applications. Practical tests demonstrate their outstanding heat dissipation performance, significantly reducing CPU temperatures computer cooling system. This research work unveils possible upper limit BN‐based TIMs paves way large‐scale practical implementation, particularly management next‐generation electronic devices.
Язык: Английский
Процитировано
23
Angewandte Chemie, Год журнала: 2024, Номер 136(17)
Опубликована: Фев. 9, 2024
Abstract The development of highly thermally conductive composites that combine visible light/infrared camouflage and information encryption has been endowed with great significance in facilitating the application 5G communication technology military fields. This work uses aramid nanofibers (ANF) as matrix, hetero‐structured silver nanowires@boron nitride nanosheets (AgNWs@BNNS) prepared by situ growth fillers, which are combined to fabricate sandwich structured electrically insulating (BNNS/ANF)‐(AgNWs@BNNS)‐(BNNS/ANF) (denoted BAB) composite films “filtration self‐assembly, air spraying, hot‐pressing” method. When mass ratio AgNWs@BNNS BNNS is 1 : total fraction 50 wt %, BAB film maximum in‐plane thermal conductivity coefficient ( λ ∥ 10.36 W/(m ⋅ K)), excellent electrical insulation (breakdown strength volume resistivity 41.5 kV/mm 1.21×10 15 Ω cm, respectively) mechanical properties (tensile 170.9 MPa). % could efficiently reduce equilibrium temperature central processing unit (CPU) working at full power, resulting 7.0 °C lower than CPU solely integrated ANF directly. In addition, boasts adaptive dual on cement roads jungle environments, well function fast QR code within 24 seconds.
Язык: Английский
Процитировано
19
Chemical Engineering Journal, Год журнала: 2024, Номер 489, С. 151170 - 151170
Опубликована: Апрель 9, 2024
Язык: Английский
Процитировано
19