火炸药学报2016，Vol.39Issue(1)：23-27,5.DOI:10.14077/j.issn.1007-7812.2016.01.003
CL-20/DNT共晶炸药的制备及其性能研究
Preparation of CL-20/DNT Cocrystal Explosive and Study on Its Performance
摘要
Abstract
2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane/Dinitrotoluene(CL-20/DNT)cocrystal explosive was prepared by an evaporation-crystallization method using acetone as solvent.Scanning electron micros-copy(SEM),X-ray diffraction(XRD),and thermogravimetry/differential scanning calorimeter(TGA/DSC)analyses were employed to investigate the morphology,structure and thermal decomposition characteristics of the cocrystal explosive.The mechanical sensitivity and 5s explosion temperature of CL-20/DNT cocrystal explosive were tested and its detonation properties were calculated.Results indicate that the micron morphology of CL-20/DNT cocrystal explosive shows strip-shaped crystal which is obviously different from that of raw CL-20.Its diffraction peaks are obviously different from that of CL-20/DNT physical mixture,indicating that the new phase is formed.On DSC curve of CL-20/DNT cocrystal explosive,there is almost no endothermic peak that reflected the melting of DNT. However,on DSC curve of CL-20/DNT physical mixture,the melting peak of DNT is striking and the exothermic peaks and peak position of both are different.In comparison with raw CL-20,the decomposition peak temperature of CL-20/DNT cocrystal explosive advances by 21℃,and ΔH and Qmax increase by 39% and 104%,respectively. Comparing with its physical mixture,5 s explosion temperature and apparent activation energy of CL-20/DNT cocrystal increase by 3.9℃ and 65.7 kJ/mol,respectively;Impact sensitivity increases by 88.9% and friction sensitivity decreases by 40%,showing that the thermal stability of cocrystal explosive is enhanced.The theoretical detonation velocity of CL-20/DNT cocrystal reaches to 8 340 m/s.关键词
共晶炸药/CL-20/DNT/热分解/感度/5s爆发点Key words
cocrystal explosive/CL-20/DNT/thermal delomposition/sensitivity/5s explosion temperature分类
军事科技引用本文复制引用
宋小兰,王毅,宋朝阳,宋丹,安崇伟,王晶禹,张景林..CL-20/DNT共晶炸药的制备及其性能研究[J].火炸药学报,2016,39(1):23-27,5.基金项目
国家自然科学基金资助(51206081) （51206081）
