Synthesis of Nanoscale Energetic Metal with a Dual Silane Layer for an Air-Breathing Propulsion System

초록

Energetic boron nanoparticles (BNPs) have been widely used as additives in endothermic fuels to enhance combustion efficiency. In this study, the surface of BNPs is modified using novel silane precursors to prevent re-oxidation and improve dispersion stability in fuel, as it improves their affinity for hydrocarbon fuels and enhances dispersion stability. For practical application as fuel nanoadditives, dual silane-capped BNPs are dispersed in hydrocarbon fuel at concentrations ranging from 1.0 to 5.0 wt%, and their calorific values are measured. As a result, the nanofluid containing 2.0 wt% dual silane-capped BNPs exhibits the highest calorific value of 10,734.0 kcal kg?1, with excellent dispersion stability over 50 days. These results clearly demonstrate the significance of silane capping in enhancing the combustion performance of endothermic fuels. - 본 연구는 2025년 정부(방위사업청)의 재원으로 국방과학연구소의 지원을 받아 수행된 미래도전국방기술 연구개발사업임(No.915066201). Keywords: Energetic metal, Silane capping, Improved dispersion stability, Hydrocarbon fuel, Combustion characteristics