With the increasing demand for deep oil well resources and rapid development of aerospace exploration, the search for advanced heat-resistant energetic compounds has attracted the attention of researchers in the field of energetic materials. In this study, two heat-resistant energetic materials, viz. 3,6-bis(3,5-diamino-4-nitropyrazol-1-yl)-1,2,4,5-triazine (NPX-01) and 2,4,6-tri(3,5-diamino-4-nitropyrazol-1-yl)-1,3,5-triazine (NPX-02) were designed and synthesized through a synergistic strategy of designing strong hydrogen bonding and extended π-conjugation. The thermal decomposition temperatures of NPX-01 and NPX-02 reached 370.4 °C and 387.7 °C, respectively, which are even higher than those of commonly used heat-resistant energetic materials such as TATB (T_d = 360.0 °C) and PYX (T_d = 360.0 °C). Moreover, NPX-01 and NPX-02 also exhibited good detonation velocity (D = 8769 m s⁻¹ and D = 8310 m s⁻¹, respectively) and low mechanical sensitivities (IS ≥ 40 J, FS > 360 N), demonstrating their great potential as novel heat-resistant energetic materials.

中文翻译：

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通过氢键和扩展π共轭策略实现新型含能材料的超高耐热性

随着对深油井资源需求的不断增加和航天探索的快速发展，寻找先进的耐热含能化合物引起了含能材料领域研究人员的关注。在这项研究中，两种耐热含能材料，即。 3,6-双(3,5-二氨基-4-硝基吡唑-1-基)-1,2,4,5-三嗪 ( NPX-01 ) 和 2,4,6-三(3,5-二氨基-)通过设计强氢键和扩展π共轭的协同策略设计并合成了4-硝基吡唑-1-基)-1,3,5-三嗪( NPX-02 )。 NPX-01和NPX-02的热分解温度分别达到370.4℃和387.7℃，甚至高于TATB（Td = _360.0 ℃）和PYX等常用耐热含能材料的热分解温度（Td ₌ 360.0°C）。此外，NPX-01和NPX-02还表现出良好的爆速（分别为D = 8769 ms ^-1和D = 8310 ms ^-1）和低机械敏感性（IS ≥ 40 J，FS > 360 N），展示了它们的巨大优势。具有作为新型耐热含能材料的潜力。