Yuan Wen-Li, Tao Guo-Hong, Zhang Lei, Zhang Zhang, Xue Ying, He Ling, Huang Jinglun, Yu Weifei
College of Chemistry, Sichuan University, Chengdu, 610064, China.
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang, 621999, China.
Sci Rep. 2020 Mar 11;10(1):4477. doi: 10.1038/s41598-020-61470-9.
Ensuring the security for long-term storage of weapons is always of the great cMehilaloncerns in the field of energetic materials. 1,3,5-Triamino-2,4,6-trinitrobenzene (TATB) is a remarkable explosive applied in nuclear weapons where extreme safety is required primarily. Owing to the strong inter or intra molecular hydrogen bonding, TATB shows poor solubility in most solvents. As the result, the particle shape and size of TATB products is hard to regulate, which closely related to the weapons stability. Herein, a new recrystallization method is provided to refine TATB using bicarbonate ionic liquids. Bicarbonate ionic liquids exhibited the record solubility (26.7 wt%) for dissolving TATB explosive. The recrystallized TATB were spherical particles with uniform size and showed extremely insensitivity to impact (>100 J) and friction (>360 N). Moreover, the experimental H and C NMR spectra of TATB in solution are reported for the first time.
确保武器长期储存的安全性一直是含能材料领域极为关注的问题。1,3,5-三氨基-2,4,6-三硝基苯（TATB）是一种用于核武器的卓越炸药，主要要求具备极高的安全性。由于分子间或分子内存在强氢键，TATB在大多数溶剂中的溶解度较差。因此，TATB产品的颗粒形状和尺寸难以调控，而这与武器稳定性密切相关。在此，提供了一种使用碳酸氢盐离子液体精制TATB的新重结晶方法。碳酸氢盐离子液体对TATB炸药的溶解表现出创纪录的溶解度（26.7 wt%）。重结晶后的TATB为尺寸均匀的球形颗粒，对撞击（>100 J）和摩擦（>360 N）表现出极高的不敏感性。此外，首次报道了TATB在溶液中的实验氢谱和碳谱。
