含能材料2016，Vol.24Issue(12)：1188-1192,5.DOI:10.11943/j.issn.1006-9941.2016.12.010
机械球磨法制备纳米HNS及其热分解性能
Thermal Decomposition Performance of Nano HNS Fabricated by Mechanical Milling Method
摘要
Abstract
To refine the hexanitrostilbene(HNS), nanometer HNS explosive with average particle size of 94.8 nm was prepared by a high energy ball milling method.The characteristics and analysis of the HNS sample were performed by scanning electron microscopy(SEM), X-ray diffractometry(XRD), infrared(IR) spectroscopy, X-ray photoelectron spectroscopy(XPS), DSC-IR analysis and 5s explosion temperature.Results show that after ball milling, the micro morphology of the explosive is nearsr-pherical, and the particle reveals a normal distribution.The mechanical ball milling action does not change the original crystal form, molecular structure, and surface elements of HNS, showing that mechanical milling is a kind of reliable method for fabrication of nanometer HNS.The apparent activation energy of thermal decomposition of nanometer HNS is 12.4 kJ·mol-1 higher than that of raw HNS, indicating that the activation of nano HNS molecules requires a higher energy.After heating, nanometer HNS decomposes into a large number of CO2 and a small amount of H2O, while the N element is present in the non polar N2 molecule.The 5 s explosion temperature of nanometer HNS is 12.2 ℃ higher than that of raw HNS, meanting than the nanometer HNS has lower thermal sensitivity.关键词
纳米炸药/六硝基茋(HNS)/活化能/分解产物/5s爆发点Key words
nano explosives/hexanitrostilbene(HNS)/activation energy/decomposition products/5s explosion temperature分类
军事科技引用本文复制引用
宋小兰,王毅,刘丽霞,安崇伟,王晶禹,张景林..机械球磨法制备纳米HNS及其热分解性能[J].含能材料,2016,24(12):1188-1192,5.基金项目
国家自然科学基金资助(51206081) （51206081）
