火炸药学报2025，Vol.48Issue(6)：513-519,7.DOI:10.14077/j.issn.1007-7812.202409010
静电喷雾法制备球形硝基胍工艺的数值模拟与试验验证
Numerical Simulation and Experimental Verification of Spherical Nitroguanidine Fabrication via Electrostatic Spraying
摘要
Abstract
To obtain spherical nitroguanidine(NQ)crystals with high packing density,a combined simulation and experimental approach was employed to investigate the electrostatic spray process for preparing spherical NQ.The effects of voltages,flow rates,and collection distances on NQ particle size were systematically investigated using ANSYS finite element software,cor-responding relationship curves were established.The control variable method was applied to optimize the process parameters,with experimental data validated against numerical simulations.The results show that the simulation-derived optimal process pa-rameters were identified as follows:a flow rate of 0.14mL/min,an applied voltage of 10kV,and acollection distance of 250mm.Under these optimized conditions,the electrostatic spray process induced solely physical transformations in NQ.The resulting particles were spherical,exhibiting an average diameter of approximately 5 μm.Compared to the raw material,spherical NQ demonstrated enhanced thermal stability,manifested by increases in activation energy and critical thermal explosion temperature of 14.37 kJ/mol and 16.31 K,respectively.Furthermore,the packing density of spherical NQ reached 1.332g/cm3,repre-senting a significant enhancement of 0.948g/cm3 over the raw material and concurrently enhancing flow ability.关键词
应用化学/硝基胍/NQ/静电喷雾法/热安全性/堆积密度Key words
applied chemistry/nitroguanidine/NQ/electrostatic spray method/thermal safety/bulk density分类
军事科技引用本文复制引用
董军,刘磊,王灵鑫,贺希,冀威..静电喷雾法制备球形硝基胍工艺的数值模拟与试验验证[J].火炸药学报,2025,48(6):513-519,7.基金项目
国家自然科学基金(No.22405223) （No.22405223）
