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Assessment of the thermal stability, catalytic behavior, and laser ignitability of energetic coordination polymer [Cu(HBTT)(H2O)]n
Energetic Materials Frontiers Pub Date : 2021-09-11 , DOI: 10.1016/j.enmf.2021.08.002
Li-qiong Luo 1 , Hang Zhou 1 , Quan-cheng Liu 2 , Hu Deng 2 , Wen-jia Hao 1 , Jin-kun Guo 1 , Tao Huang 1 , Bo Jin 1 , Ru-fang Peng 1
Affiliation  

Solvent molecules, especially coordinated solvent molecules, vastly affect the energetic properties of energetic coordination polymers (ECPs). Therefore, an effective strategy to maintain energetic properties is to reduce solvent molecules. In this paper, a nitrogen-rich energetic coordination polymer [Cu(HBTT)(H2O)]n (ECP 1) was synthesized and prepared by integrating the coordination mode. Its properties were adequately investigated, including crystal structure, thermal stability, energetic properties, and sensitivity. In terms of application, it was researched as catalysts for the thermal decomposition of AP and as a primary explosive for laser initiation. As revealed by single-crystal X-ray diffraction results, it crystallizes in and belongs to monoclinic space group P21/n with a 2D layer-like structure. Meanwhile, it has outstanding thermal stability (Tp = 357.2 °C, Ek = 201.78 kJ mol-1) according to differential scanning calorimetry (DSC) curves and thermogravimetric curves (TG). The detonation velocity and detonation pressure of ECP 1 (8.63 km s-1, 36.73 GPa) can bear comparison with RDX and HMX. The catalytic pyrolysis experiment indicates that AP/ECP 1 (10 wt%) can accelerate the thermal decomposition of AP, with the high temperature for decomposition decreasing to nearly 80 °C. The activation energy (Ek) of AP decreased from 217.36 kJ mol-1 to 185.96 kJ mol-1 by adding ECP 1. Meanwhile, ECP 1 has a preliminary response to laser initiation. These results are conducive to the quick development of ECPs.



中文翻译:

评估高能配位聚合物 [Cu(HBTT)(H2O)]n 的热稳定性、催化行为和激光可燃性

溶剂分子,尤其是配位溶剂分子,极大地影响了高能配位聚合物 (ECP) 的能量特性。因此,保持能量特性的有效策略是减少溶剂分子。在本文中,一种富氮高能配位聚合物 [Cu(HBTT)(H 2 O)] n (ECP 1)是通过整合配位模式合成制备的。对其性质进行了充分研究,包括晶体结构、热稳定性、能量性质和敏感性。在应用方面,它被研究作为AP热分解的催化剂和激光起爆的初级炸药。单晶X射线衍射结果表明,它在单斜空间群P 21/ n 中结晶,具有二维层状结构。同时,它具有出色的热稳定性(T p  = 357.2 °C, E k  = 201.78 kJ mol -1) 根据差示扫描量热法 (DSC) 曲线和热重曲线 (TG)。ECP 1 (8.63 km s -1 , 36.73 GPa)的爆速和爆压可与RDX和HMX相媲美。催化热解实验表明,AP/ECP 1 (10 wt%) 可以加速AP 的热分解,分解的高温降至接近80 °C。 添加ECP 1 后,AP的活化能( E k )从217.36 kJ mol -1降低到185.96 kJ mol -1。同时,ECP 1对激光启动有初步反应。这些结果有利于 ECP 的快速发展。

更新日期:2021-10-27
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