Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China.
State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
ACS Appl Mater Interfaces. 2023 May 24;15(20):24408-24415. doi: 10.1021/acsami.3c01855. Epub 2023 May 15.
As one of the most widely used energetic materials to date, trinitrotoluene (TNT) suffers from several generally known drawbacks such as high toxicity, oil permeability, and poor mechanical properties, which are driving researchers to explore new high-performance energetic melt-castable materials for replacing TNT. However, it still remains a great challenge to discover a promising TNT alternative due to the multidimensional requirements for practical applications. Herein, we reported a new promising energetic melt-castable molecule, 4-methoxy-1-methyl-3,5-dinitro-1-pyrazole (named as DMDNP). Besides a reasonable melting point (: 94.8 °C), good thermostability (: 293.2 °C), and excellent chemical compatibility, DMDNP exhibits some obvious advantages over TNT including more environmentally friendly synthesis, high yield, low toxicity, low volume shrinkage, low mechanical and electrostatic sensitivities, etc., demonstrating well-balanced properties and great promise as a TNT replacement.
作为迄今为止应用最广泛的含能材料之一，三硝基甲苯（TNT）存在毒性高、油渗透性和机械性能差等缺点，这促使研究人员探索新的高性能熔铸含能材料来替代 TNT。然而，由于实际应用的多维要求，发现一种有前途的 TNT 替代品仍然是一个巨大的挑战。在此，我们报道了一种新的有前途的熔铸含能分子，4-甲氧基-1-甲基-3,5-二硝基-1-吡唑（命名为 DMDNP）。除了合理的熔点（94.8°C）、良好的热稳定性（293.2°C）和优异的化学相容性外，DMDNP 与 TNT 相比还具有一些明显的优势，包括更环保的合成、高收率、低毒性、低体积收缩、低机械和静电敏感性等，表现出良好的平衡性能和作为 TNT 替代品的巨大潜力。
