Li Chengchuang, Zhu Teng, Tang Jie, Lei Caijin, Yu Guoyang, Yang Yanqiang, Yang Hongwei, Xiao Chuan, Cheng Guangbin
School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing, Jiangsu, China.
China Academy of Engineering Physics, No. 64 Mianshan Road, Mianyang, Sichuan, China.
Mater Horiz. 2024 Nov 11;11(22):5701-5708. doi: 10.1039/d4mh00999a.
Nowadays, thousands of energetic materials have been synthesized, but only a few compounds meet all the high standards of detonation performance comparable to that of the widely used military explosive RDX, thermal stability comparable to that of the most widely used heat-resistant explosive HNS, and impact sensitivity comparable to that of the traditional explosive TNT. Also, as a goal, a novel and unexpected one-step method for constructing the furoxan-bridged energetic compound 3,4-bis(3,8-dinitropyrazolo[5,1-][1,2,4]triazin-4-amino-7-yl)-1,2,5-oxadiazole 2-oxide (OTF) has been achieved under the conventional TFA/100% HNO nitration reaction system from the acetic acid intermediate. In this work, OTF with a high density of 1.90 g cm, the highest decomposition temperature of 310 °C (onset) among furoxan-based high explosives to date, superior detonation velocity (: 9109 m s), and low sensitivity (IS: 25 J) is reported. This work is a giant step forward in the development of advanced high-energy heat-resistant explosives and could improve future possibilities for the design of furoxan-based energetic materials.
如今，已经合成了数千种含能材料，但只有少数化合物能满足所有高标准，其爆轰性能可与广泛使用的军用炸药RDX相媲美，热稳定性可与使用最广泛的耐热炸药HNS相媲美，冲击感度可与传统炸药TNT相媲美。此外，作为一个目标，已经实现了一种新颖且意想不到的一步法，即在传统的TFA/100% HNO硝化反应体系下，由乙酸中间体构建呋咱桥连含能化合物3,4-双(3,8-二硝基吡唑并[5,1 - ][1,2,4]三嗪-4-氨基-7-基)-1,2,5-恶二唑2-氧化物(OTF)。在这项工作中，报道了一种密度为1.90 g/cm³、在迄今为止基于呋咱的高能炸药中分解温度最高（起始温度为310 °C）、爆速优异（9109 m/s）且感度较低（撞击感度：25 J）的OTF。这项工作在先进的高能耐热炸药的发展中向前迈出了巨大的一步，并可能改善基于呋咱的含能材料设计的未来可能性。
