Mu Xiaogang, Wang Shenghui, Yang Fanzhi, Li Hao
Zhijian Laboratory, Rocket Force University of Engineering, Xi'an 710025, China.
Beijing Institute of Technology, Advanced Research Institute of Multidisciplinary Science, Beijing 100081, China.
Molecules. 2025 May 3;30(9):2037. doi: 10.3390/molecules30092037.
Boron-containing compounds, known for their high calorific value, can significantly enhance the energy density of traditional liquid propellants. Through precise chemical modification of the C-H bonds in -carborane, a novel liquid cluster material was synthesized: C,C'-Bis(2-ethylhexanoylmethyl)--carborane (). This compound exhibits excellent stability, density, and energy properties. By combining with mixed amine-50, a cluster liquid propellant was formulated, and its key performance metrics such as density, freezing point, mass calorific value, and volumetric calorific value were evaluated. The propellant achieved a density of 0.884 g·cm, a freezing point below -55 °C, a mass calorific value of 41.13 kJ·g, and a volumetric calorific value of 36.36 kJ·cm. The theoretical specific impulse reached 346 s, and the theoretical density impulse was 2.99 × 10 N·s·m. Compared to the traditional mixed amine-50/red fuming nitric acid propellant, the cluster liquid propellant developed in this study maintains a similar calorific value while improving the theoretical specific impulse and density impulse by 2.3% and 3.8%, respectively.
含硼化合物以其高发热量而闻名，能够显著提高传统液体推进剂的能量密度。通过对 -碳硼烷中C-H键进行精确化学修饰，合成了一种新型液体簇材料：C,C'-双(2-乙基己酰基甲基)--碳硼烷（）。该化合物具有优异的稳定性、密度和能量特性。将其与混合胺-50相结合，配制出一种簇状液体推进剂，并对其密度、冰点、质量发热量和体积发热量等关键性能指标进行了评估。该推进剂的密度为0.884 g·cm，冰点低于-55°C，质量发热量为41.13 kJ·g，体积发热量为36.36 kJ·cm。理论比冲达到346 s，理论密度冲量为2.99×10 N·s·m。与传统的混合胺-50/红烟硝酸推进剂相比，本研究开发的簇状液体推进剂在保持相近发热量的同时，理论比冲和密度冲量分别提高了2.3%和3.8%。
