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Accelerating the discovery of insensitive high-energy-density materials by a materials genome approach

机译:通过材料基因组方法加快对不敏感的高能量密度材料的发现

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Finding new high-energy-density materials with desired properties has been intensely-pursued in recent decades. However, the contradictory relationship between high energy and low mechanical sensitivity makes the innovation of insensitive high-energy-density materials an enormous challenge. Here, we show how a materials genome approach can be used to accelerate the discovery of new insensitive high-energy explosives by identification of “genetic” features, rapid molecular design, and screening, as well as experimental synthesis of a target molecule, 2,4,6-triamino-5-nitropyrimidine-1,3-dioxide. This as-synthesized energetic compound exhibits a graphite-like layered crystal structure with a high measured density of 1.95?g?cm?3, high thermal decomposition temperature of 284?°C, high detonation velocity of 9169?m?s?1, and extremely low mechanical sensitivities (impact sensitivity, 60?J and friction sensitivity, 360?N). Besides the considered system of six-member aromatic and hetero-aromatic rings, this materials genome approach can also be applicable to the development of new high-performing energetic materials.
机译:在最近的几十年中,人们一直在寻找具有所需性能的新型高能量密度材料。然而,高能量与低机械灵敏度之间的矛盾关系使得不敏感的高能量密度材料的创新成为巨大的挑战。在这里,我们展示了如何通过识别“遗传”特征,快速的分子设计和筛选以及目标分子的实验合成,来利用材料基因组方法来加速新的不敏感高能炸药的发现,[2] 4,6-三氨基-5-硝基嘧啶-1,3-二氧化物。这种合成的高能化合物呈现出类似石墨的层状晶体结构,其高测量密度为1.95?g?cm?3,高热分解温度为284?C,高爆轰速度为9169?m?s?1,以及极低的机械灵敏度(冲击灵敏度> 60?J和摩擦灵敏度> 360?N)。除了考虑的六元芳族和杂芳族环系统之外,这种材料基因组方法还可用于开发新型高性能含能材料。

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