Dallaston Madeleine A, Brusnahan Jason S, Wall Craig, Williams Craig M
School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, 4072, Australia.
Defence Science and Technology Group, Edinburgh, South Australia, 5111, Australia.
Chemistry. 2019 Jun 21;25(35):8344-8352. doi: 10.1002/chem.201901086. Epub 2019 May 24.
As infrared seeking technology evolves, threats are better able to distinguish defensive infrared (IR) flares from true targets. Spectrally matched flares, which generally employ carbon-based fuels, are better able to decoy some advanced missiles by more closely mimicking the IR emission of the target. Cubane is a high-energy carbon-based scaffold which may be suitable for use as a fuel in spectrally matched flares. The enthalpy of formation and strain energy of a series of cubanes was predicted in silico, and their thermal and impact stability examined. All were found to undergo highly exothermic decomposition in sealed cell differential scanning calorimetry, and two cubanes subsequently underwent quantitative sensitiveness testing. Despite their F of I values being in the secondary explosive range, cubane-1,4-dicarboxylic acid (F of I=70) and 4-carbamoylcubane-1-carboxylic acid (F of I=90) were identified as potentially useful fuels for pyrotechnic infrared countermeasure flare formulations.
随着红外寻的技术的发展，威胁方越来越能够区分防御性红外（IR）曳光弹和真正的目标。光谱匹配的曳光弹通常使用碳基燃料，通过更紧密地模拟目标的红外辐射，能够更好地诱骗一些先进导弹。立方烷是一种高能碳基骨架，可能适合用作光谱匹配曳光弹的燃料。通过计算机模拟预测了一系列立方烷的生成焓和应变能，并研究了它们的热稳定性和冲击稳定性。在密封池差示扫描量热法中发现所有立方烷都会发生高度放热分解，随后对两种立方烷进行了定量感度测试。尽管它们的撞击感度值处于二级爆炸物范围内，但立方烷-1,4-二羧酸（撞击感度=70）和4-氨基甲酰基立方烷-1-羧酸（撞击感度=90）被确定为烟火红外对抗曳光弹配方中潜在有用的燃料。
