Chen Fang, Wang Yi, Song Siwei, Wang Kangcai, Zhang Qinghua
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621900, China.
Chempluschem. 2023 Sep;88(9):e202300397. doi: 10.1002/cplu.202300397.
With the increase in the demand for high-performance composite explosives, the search for advanced energetic melt-castable compounds has attracted increasing attention in the field of energetic materials. Herein, two new energetic materials with nitromethyl and azidomethyl substituents (1-(nitromethyl)-3,4-dinitro-1H-pyrazole (NMDNP) and 1-(azidomethyl)-3,4-dinitro-1H-pyrazole (AMDNP) were prepared by the substituent modification of a potential melt-castable molecule ((3,4-dinitro-1H-pyrazol-1-yl) methyl nitrate, MC-4), respectively. NMDNP exhibited a suitable melting point (90 °C), good thermal stability (T : 185 °C) and excellent detonation performance (8484 m s ) and impact sensitivity (25 J), thereby demonstrating promise as an energetic melt-castable material. Simultaneously, compared with the nitrato-methyl and azidomethyl substituents, the nitromethyl substituent exhibited greater advantages in regulating performance.
随着对高性能复合炸药需求的增加，寻找先进的高能熔铸化合物在含能材料领域引起了越来越多的关注。在此，通过对一种潜在的可熔铸分子（硝酸（3,4-二硝基-1H-吡唑-1-基）甲酯，MC-4）进行取代基修饰，分别制备了两种带有硝甲基和叠氮甲基取代基的新型含能材料（1-（硝甲基）-3,4-二硝基-1H-吡唑（NMDNP）和1-（叠氮甲基）-3,4-二硝基-1H-吡唑（AMDNP））。NMDNP表现出合适的熔点（90℃）、良好的热稳定性（T：185℃）以及优异的爆轰性能（8484m/s）和撞击感度（25J），从而证明其作为一种高能可熔铸材料具有潜力。同时，与硝酸酯甲基和叠氮甲基取代基相比，硝甲基取代基在性能调控方面表现出更大优势。
