Silicone Composites with Electrically Oriented Boron Nitride Platelets and Carbon Microfibers for Thermal Management of Electronics

Polymers, Год журнала: 2025, Номер 17(2), С. 204 - 204

Опубликована: Янв. 15, 2025

This study investigated silicone composites with distributed boron nitride platelets and carbon microfibers that are oriented electrically. The process involved homogenizing dispersing nano/microparticles in the liquid polymer, aligning particles DC AC electric fields, curing composite IR radiation to trap within chains. innovative concept utilized two fields align particles, improving even distribution of among BN Based on SEM images, chains uniformly surface sample, fully formed mature, but their architecture critically depends composition. physical electrical characteristics were extensively studied regard composition orientation particles. higher concentration platelets, greater enhancement dielectric permittivity, effect decreases gradually after reaching a 15%. impact incorporating into permittivity is clearly beneficial, especially when content surpasses 12%. Thermal conductivity showed significant improvement all samples aligned regardless For homogeneous materials, thermal significantly enhanced by inclusion microfibers, particularly exceeds biggest increase happened added at rate 2%, while surpassed 15.5%. greatly improved adding present, over When 15.5%, diminishes as fibers only partly vertically oriented, prioritizing vertical alignment. outcomes this results for compared prior findings literature, utilizing more straightforward approach processing polymer matrix In contrast current technologies, homologous materials dispersed presented technology reduces ingredient consumption 5–10 times due arrangement chains, which enhances heat transfer efficiency desired direction. present can be used variety industrial settings, accommodating different ingredients film thicknesses, customized various applications electronics management.

Язык: Английский

Evaluation of Thermal and Mechanical Properties of Bi-In-Sn/WO3 Composites for Efficient Heat Dissipation

Materials, Год журнала: 2024, Номер 17(21), С. 5315 - 5315

Опубликована: Окт. 31, 2024

Phase change materials (PCMs) offer promising solutions for efficient thermal management in electronic devices, energy storage systems, and renewable applications due to their capacity store release significant during phase transitions. This study investigates the physical properties of Bi-In-Sn/WO3 composites, specifically use as interface (PCM-TIMs). The composite was synthesized through mechanochemical grinding, which enabled uniform dispersion WO3 particles within Bi-In-Sn alloy matrix. addition markedly improved composite’s conductivity transformed its form into a putty-like consistency, addressing leakage issues typically associated with pure alloys. Microstructural analyses demonstrated existence continuous between liquid metal phases, no gaps, ensuring structural stability. Thermal performance tests that achieved conductivity, reduced volumetric latent heat, there slight increase contact resistance higher content. These findings highlight potential composites utilization advanced PCM-TIMs, offering enhanced heat dissipation, stability, integrity high-performance systems.

Язык: Английский