基于DNBT的能量共晶体对晶体工程的替代效应:来自多层次计算分析的见解
Lu Shi1, Min Liu1, Shangrui Xie1
1College of Chemistry and Materials Engineering, Mianyang Teachers' College, Mianyang 621000, China.
Materials (Basel, Switzerland)
|July 12, 2025
概括
本研究探讨了具有TNB,TNT和PA的5,5-dinitro-2H,2H-3,3-bi-1,2,4-triazole (DNBT) 的能量共晶体.由于特定的分子间相互作用,共晶体表现出增强的稳定性和降低的冲击灵敏度,扩大了DNBT的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学计算化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 能量材料需要为安全应用量身定制的稳定性和灵敏性.
- 5,5-dinitro-2H,2H-3,3-bi-1,2,4-triazole (DNBT) 是一个有前途的能量化合物.
- 晶形成是一种修改能量材料属性的策略.
研究的目的:
- 调查DNBT共晶拓和稳定性上的替代效应.
- 分析相互作用机制和爆炸性能.
- 确定能量醇化合物的设计策略.
主要方法:
- 结合密度函数理论 (DFT) 的计算.
- 经典分子动力学 (MD) 模拟.
- 静电电位 (ESP),赫什菲尔德表面分析,辐射分布函数 (RDF),结合能量和爆炸参数计算.
主要成果:
- 同晶体表现出C-HO键和NO2-π堆叠,与DNBT的N-HO相互作用不同.
- PA/DNBT共晶体显示出最高的结合能,稳定性和最低的冲击灵敏度.
- 替代品稍微改变了晶体密度,但显著降低了冲击灵敏度.
- 基于DNBT的共晶体表现出平衡的引爆性能和冲击灵敏度.
结论:
- 晶工程有效调整了DNBT的稳定性和灵敏性.
- 微弱的分子间相互作用在稳定能量共晶体中起着至关重要的作用.
- 基于DNBT的共晶体是能在能量材料中扩展应用的可行候选者.
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