Thermal interface materials of PDMS with h-BN fillers synthesized from ferroboron via SHS

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Thermal interface materials of PDMS with h-BN fillers synthesized from ferroboron via SHS	7 MB	Adobe Acrobat PDF	Read	Download
DOI Доступ к ресурсу на сайте издателя			10.1016/j.ceramint.2024.11.472

Title: Thermal interface materials of PDMS with h-BN fillers synthesized from ferroboron via SHS
Creator: Reger, Anton A.
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Akulinkin, Alexander
Date: 2025
DOI: 10.1016/j.ceramint.2024.11.472
Description: Thermal interface materials (TIMs) are widely used to enhance heat transfer between heat-generating compo-nents of electronic devices and cooling radiators. The rapid miniaturization of electronic devices and the increase in their speciﬁc capacity have led to excessive heat loads, necessitating the development of TIMs based on dielectric powder ﬁllers with high thermal conductivity. This paper presents an energy-efﬁcient approach for synthesizing hexagonal boron nitride (h-BN) powder, used as a ﬁller for thermal interface pads with a poly-dimethylsiloxane polymer matrix. The h-BN ﬁller was produced through a two-step process: (1) self-propagating high-temperature synthesis of Fe-BN powder through the self-sustaining exothermic reaction of an affordable ferroboron powder with gaseous nitrogen, followed by (2) acid leaching of the synthesized powders to remove iron. The BN phase content in the resulting powder ﬁller is 99.6 wt%. The pads demonstrated a thermal con-ductivity of up to 1.95 W m⁻1K⁻1 with a 40 wt% ﬁller content and an average particle size of 40 μm, all while retaining adequate ﬂexibility and elasticity.

Created: 26-09-2025

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Факультет инновационных технологий Thermal interface materials of PDMS with h-BN fillers synthesized from ferroboron via SHS