Synthesis of energetic coordination polymers based on 4-nitropyrazole by solid-melt crystallization in non-ionization condition  

作　　者：Ting-wei Wang Shu Bu Kun Wang Lu Zhang Zhen-xin Yi Shun-guan Zhu Jian-guo Zhang 

机构地区：[1]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing,100081,China [2]School of Chemical Engineering,Nanjing University of Science and Technology,200 Xiaolingwei Street,Xuanwu,Nanjing,210094,China [3]Department of Chemistry,Laboratory of Structure and Functional Regulation of Hybrid Materials,Anhui University,Ministry of Education,Hefei,230601,China

出　　处：《Defence Technology（防务技术）》2023年第10期13-22,共10页Defence Technology

基　　金：the projects of National Natural Science Foundation of China(Grant Nos.22175025 and 21905023)for their generous financial support.

摘　　要：Based on the theory of crystallization,a solvent-free solid-liquid phase crystallization method called solid-melt crystallization was designed to prepare energetic coordination polymers.Two target compounds[Cu(NPyz)_(4)NO_(3)]·NO_(3)(ECPs-1)and Cu(NPyz)_(4)(ClO_(4))_(2)(ECCs-2)were prepared through programmed heating and cooling by using 4-nitropyrazole(NPyz),(Cu(NO_(3))_(2)·5H_(2)O and Cu(ClO_(4))_(2)·5H_(2)O) as raw materials.In addition,crystallization pre-experiments and annealing experiments also verified the feasibility of the method.Their structures were confirmed by IR,elemental analysis,single-crystal X-ray diffraction and powder X-ray diffraction.The physicochemical properties and sensitivity test results showed that ECCs-2 has better thermal stability(T_(d)=221℃),while ECPs-1 is less sensitive to mechanical stimuli(IS=12 J,FS=240 N).Calculations based on EXPLO5 and the Kamlet-Jacobs equation showed that ECCs-2 has more considerable detonation performance(P=25.2 GPa,D=7.5 km/s).In comparison,the more intuitive results from the HN test,flame test,thermal resistance test and lead plate explosion test revealed that ECCs-2 has an“acceptable”detonation performance.The laser detonation test also showed that ECCs-2 is a promising excellent laser detonation material(E=408 mJ,P=24 W,τ=17 ms).

关 键 词：4-Amino-1 2 5-oxadiazole-3-carbohydrazide Crystallization Coordination polymers Laser Primary explosives 

分 类 号：TQ560.1[化学工程—炸药化工]