首页|Preparation and characterization of high-reactivity explosive-based nano-boron microspheres
Preparation and characterization of high-reactivity explosive-based nano-boron microspheres
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Boron nanoparticles,with their remarkably high gravimetric and volumetric calorific values,emerge as the most promising fuel in energetic fields.However,challenges such as susceptibility to oxidation,high ignition temperature,and low combustion efficiency have constrained their further applications.In this study,we fabricated high explosives based nano-boron microspheres with uniform size using the electrostatic spray method,in which the boron nanoparticles and high explosives(CL-20 or PETN)are closely bonded together by fluorinated polymer(F2602)and evenly distributed.The results indicated that the microspheres exhibited high sphericity and showed an enhanced antioxidant capability.The addition of high-energy explosives not only reduced the thermal oxidation temperature of nano-boron powder within the microspheres but also significantly enhanced the pressurization rate.Additionally,the mi-crospheres with added high-energy explosives released more energy during the combustion process.Compared to physically mixed samples,electrostatically sprayed microspheres with a uniform micro-structure still exhibited higher reactivity.Therefore,the design and synthesis of microspheres with controllable structures using the electrostatic spray method show promising application prospects.
Nano-boronCL-20PETNElectrosprayingIgnition and combustion
Chen Dong、Yi Wang、Kanghui Jia、Dan Song、Xiaolan Song、Chongwei An
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School of Materials Science and Engineering,North University of China,Taiyuan,030051,China
Jinxi Group Shanxi Jiangyang Chemical Co.,Ltd.,Taiyuan,030051,China
China Ordnance Institute of Science and Technology,Beijing 100089,China
School of Environment and Safety Engineering,North University of China,Taiyuan,030051,China
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