火炸药学报2024，Vol.47Issue(11)：993-999,7.DOI:10.14077/j.issn.1007-7812.202403010
同位素取代制备硝酸铵及其性能表征
Preparation of Ammonium Nitrate by Isotope Substitution and Its Performance Characterization
摘要
Abstract
Two types of 15N substituted ammonium nitrate,namely 15NH4NO3 and NH415NO3,were prepared by using isotope substitution technique to replace 14N in ammonium nitrate(NH4NO3)with 15N.The apparent morphology and chemical struc-ture of N substituted ammonium nitrate were investigated using scanning electron microscopy,infrared spectroscopy,and X-ray diffraction.Its density,decomposition temperature,hygroscopicity,sensitivity,detonation velocity,and heat of explosion were tested by true density analyzer,differential scanning calorimeter,desiccator equilibrium method,and micro-charge laser ignition technique.The results show that,compared with common ammonium nitrate,the chemical structure of 15N substituted ammonium nitrate is almost unchanged.The density of NH415NO3 and 15NH4NO3 increases from 1.72 g/cm3 to 1.75 g/cm3 and 1.76 g/cm3,the hygroscopic speed decreases to 97.1％and 95.2％,respectively.And the sensitivity and thermal stability are al-most the same.The detonation performance tested by a self-built micro-charge laser ignition device show that the detonation velocity of NH415NO3 and 15NH4NO3 increases to 6610m/s and 6680m/s,and the heat of explosion increases to 3 730kJ/kg and 3840kJ/kg,respectively,proving that stable isotope substitution technology can be an alternative to further enhance the performance of existing high-energy materials.关键词
高能物质/稳定同位素/同位素取代/15N元素/硝酸铵/激光点火Key words
energetic materials/stable isotope/isotope substitution/15N element/ammonium nitrate/laser ignition分类
军事科技引用本文复制引用
鄂秀天凤,王伟,雷雯,徐志斌,刘瑞斌,解龙,肖川,商照聪,孟子晖..同位素取代制备硝酸铵及其性能表征[J].火炸药学报,2024,47(11):993-999,7.基金项目
国家自然科学基金(No.22105024) （No.22105024）
