Experimental validation and numerical modeling of interfacial effects in silanized hexagonal boron nitride (h-BN) reinforced epoxy composites by tailoring silane concentration

Composite Interfaces, Год журнала: 2025, Номер unknown, С. 1 - 21

Опубликована: Фев. 3, 2025

Язык: Английский

---

Electrically insulative and thermally conductive hydrophobic composite sheets based on cellulose nanofibers for thermal interface applications

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Thermal interface applications with biodegradable materials are one of the priority areas research. In this study, supernatant cellulose nano‐fibers (SCNF) were synthesized and optimized functionalized hexagonal boron nitride (h‐BN). The fabricated nanocomposite sheets SCNF h‐BN have been characterized for structural, chemical, physical, thermal stability, thermal, electrical transport properties. Different compositions samples performed, modified h‐BN: = 30:70 sample showed best results. contact angle 95.2° highlights hydrophobic properties nanocomposite, which makes it suitable moisture resistance applications. BN‐OH30/SCNF70 (modified 30:70) show an in‐plane conductivity 19.76 W/m·K out‐plane 0.96 W/m·K. Its resistivity exceeds 400 × 10 6 ohms·cm. composites low dielectric constants at high frequencies, making them ideal next‐generation electronics that require minimal energy losses along excellent frequency stability. increased resistance, heat properties, to SCNF, shows potential use

Язык: Английский

---

Enhanced dielectric properties of polypropylene composites via surface‐modified boron nitride with amorphous carbon coating

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract As a petrochemical derivative, polypropylene finds widespread application in microelectronics and wireless communication. Developing polypropylene‐based composites with enhanced dielectric performance minimal loss is of great interest for capacitor applications. In this work, we propose novel filler to optimize the properties polypropylene. A thin amorphous carbon layer was coated onto boron nitride (BN) via glucose hydrothermal crosslinking, yielding BN@aC. Composites were then fabricated by melt blending varying concentrations The influence type (pristine BN vs. BN@aC) loading on behavior thoroughly examined. Notably, BN@aC outperformed pristine enhancing performance. At 1 kHz low content 1.5 wt%, composite achieved constant 2.85 while maintaining an exceptionally tangent 3.04 × 10 −3 . Furthermore, given thermal challenges associated miniaturized electronic devices, stability preliminarily assessed. This innovative design provides viable pathway engineering materials superior Highlights Preparation using as source core‐shell structural materials. Improved interface interaction between PP. promotes increase decrease have good properties.

Язык: Английский

---

Influence of Nano‐ZnO Particles Incorporated in Laminated Twill Woven Fabric Beams

Journal of Applied Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

ABSTRACT Epoxy resin is widely used in fiber‐reinforced composite structures, but its application high‐end projects limited due to the relatively brittle characteristics caused by high crosslink density. In this paper, reaction process of ZnO surface treated with silane coupling agent described, and toughening mechanism nano‐ZnO on matrix elaborated. A three‐level three‐factor experimental strategy has been designed, orthogonal tests were conducted investigate influence different design parameters, such as solid–liquid epoxy ratio (SLR), mass contents catalytic (2E4MI). With results three‐point bending (3P‐bending) hardness beams prepared twill woven fabrics, response analysis based statistics was carried out evaluate optimize parameters. Results show that, for beam optimized configuration, maximum load, stiffness, increased 40.02%, 51.25%, 58.18%, respectively.

Язык: Английский

---

Synthesis and Performance Study of Bio-based Bis-Epoxy Silane Coupling Agents

Polymer, Год журнала: 2025, Номер unknown, С. 128547 - 128547

Опубликована: Май 1, 2025

Язык: Английский

---

Enhancement of thermal and dielectric properties in polyimide‐polydimethylsiloxane composites using silane‐grafted aluminum nitride and potassium sodium niobate fillers

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract The development of composites with improved thermal conductivity and dielectric properties is crucial for meeting the demands cutting‐edge technologies, such as power electronics, energy storage systems, high‐frequency communication devices. These improvements are vital ensuring efficient management reliable performance in these applications. In this study, potassium sodium niobate (KNN) aluminum nitride (AlN) fillers incorporated into a polyimide‐polydimethylsiloxane (PI‐PDMS) matrix to create optimized properties. successful synthesis KNN confirmed through x‐ray diffraction (XRD) field‐emission scanning electron microscopy (FE‐SEM), which show distinct peaks cubic morphology. surface treatment AlN silane coupling agents, GPTMS, was analyzed using Fourier transform infrared (FT‐IR) spectroscopy photoelectron (XPS). techniques confirm fabrication enhanced adhesion between filler matrix. Thermal measurements that addition AlN, combined modification, significantly improves performance. PI‐PDMS/AlN composite exhibits 3.34 W/m K. incorporation increases constant high 300; however, improvement accompanied by reduction conductivity. PI‐PDMS/(90AlN‐GPTMS/10KNN) strikes balance (2.7 W/m·K) excellent (dielectric 30.1 at 10 KHz), makes it suitable electronics This study highlights importance composition optimization high‐performance composites. Highlights Silane‐treated enhance PI‐PDMS Incorporating hybrid GPTMS filler‐matrix adhesion, reducing voids offers balanced thermal/dielectric

Язык: Английский

---

Microstructural Bridge Engineering of Boron Nitride/Silicone Rubber Composite With Enhanced Interface Heat Transfer

Polymer Composites, Год журнала: 2025, Номер unknown

Опубликована: Май 22, 2025

ABSTRACT The interfacial thermal resistance and phonon scattering at boron nitride (BN)/silicone rubber (SR) interfaces severely limit the conductivity of BN/SR composites. To address this, this work proposes a microstructural bridge engineering strategy combining chemical interface modification ice‐templated alignment. Hydroxylated BN nanosheets (BNNS‐OH) were first prepared via sucrose‐assisted ball milling, followed by silane coupling agent (KH570) grafting to introduce terminal double‐bond groups (BNNS‐DB). During SR curing, covalent bonds formed between BNNS‐DB matrix, reducing resistance. Vertical alignment ice templating further optimized heat transfer pathways. composite achieved remarkable 0.85 W/m K 20 wt% filler loading, representing 286% enhancement over pure outperforming composites with unmodified 23%. Infrared thermographic analysis demonstrated rapid equilibration, reaching 64.4°C within 60 s under 80°C heating. This unique provides scalable approach design high‐efficiency materials through synergistic microstructure control.

Язык: Английский

---

Interlayer toughening of Mode I unidirectional CFRP laminates under the synergistic effect of a modified MWCNTs interpenetrating network

Composites Communications, Год журнала: 2024, Номер unknown, С. 102198 - 102198

Опубликована: Дек. 1, 2024

Язык: Английский

---