Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA.
Chemistry. 2010 Mar 8;16(10):3114-20. doi: 10.1002/chem.200902725.
N,N-Dimethylhydrazinium dicyanamide and nitrocyanamide ionic liquids (ILs) were prepared by quaterization of N,N-dimethylhydrazine with alkyl halides followed by metathesis reactions with silver dicyanamide or silver nitrocyanamide. The key physicochemical properties, such as melting point and decomposition temperatures, density, viscosity, heat of formation, detonation pressure and velocity, and specific impulse were measured/calculated. The impact of anions and alkyl-substituted cations on these properties is demonstrated. Droplet tests with white-fuming nitric acid (WFNA) as an oxidizer were utilized to show that the 14 new N,N-dimethylhydrazinium salts are hypergolic with ignition delay (ID) times ranging from 22 to 1642 ms, thereby suggesting that some may have potential as bipropellants.
N,N-二甲基肼二氰胺和硝基亚氨基氰离子液体 (ILs) 是通过 N,N-二甲基肼与卤代烷烃季铵化反应，然后与银二氰胺或银硝基亚氨基氰进行复分解反应制备的。测量/计算了关键的物理化学性质，如熔点和分解温度、密度、粘度、生成热、爆轰压力和速度以及比冲。展示了阴离子和烷基取代阳离子对这些性质的影响。利用作为氧化剂的发烟硝酸 (WFNA) 的液滴试验表明，14 种新的 N,N-二甲基肼盐与点火延迟 (ID) 时间为 22 至 1642 毫秒的 WFNA 呈剧烈反应，这表明其中一些可能具有作为双推进剂的潜力。
