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

ABSTRACT: 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.

SUBMITTER: Wang Y 

PROVIDER: S-EPMC6015015 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature