Exploiting hydrophobic borohydride-rich ionic liquids as faster-igniting rocket fuels.
نویسندگان
چکیده
A family of hydrophobic borohydride-rich ionic liquids was developed, which exhibited the shortest ignition delay times of 1.7 milliseconds and the lowest viscosity (10 mPa s) of hypergolic ionic fluids, demonstrating their great potential as faster-igniting rocket fuels to replace toxic hydrazine derivatives in liquid bipropellant formulations.
منابع مشابه
بررسی مایعات یونی خود مشتعل شونده
Because of high toxicity of hydrazine and its derivatives, many efforts are conducted to finding alternative for hydrazine in hypergolic fuels which meanwhile can do spontaneous ignition, has a low environment risk. Due to high reducing ability of hydrazine, usage of powerful conducing agents’ idea was interested. These conducting agents required to improvement in order to use as a hyperg...
متن کاملسنتز و بررسی رفتار حرارتی مایعات یونی هایپرگول جدید بر پایه کاتیون ایمیدازولیوم و آنیون دی سیانامید
A hypergolic bipropellant s consist of fuels and oxidizers that can ignite rapidly upon mixing without external ignition devices . This self –ignition technology makes the engine ignition more reliable with repeated use. Recently, ionic liquids with the dicyanamide anion which shown good hypergolic properties when contacted with common oxidizer such as concentrated nitric acid, were attracte...
متن کاملDesign and synthesis of hydrophobic and chiral anions from amino acids as precursor for functional ionic liquids.
Hydrophobic ionic liquids composed of tetrabutylphosphonium cation and chiral anions derived from amino acids modified with trifluoromethane sulfonyl groups have been synthesized using a simple method.
متن کاملIonic liquids as hypergolic fuels.
In propellant systems, fuels of choice continue to be hydrazine and its derivatives, even though they comprise a class of acutely carcinogenic and toxic substances which exhibit rather high vapor pressures and require expensive handling procedures and costly safety precautions. Only recently (2008), ionic liquids (salts with melting points less than 100 °C) with the dicyanamide anion were shown...
متن کاملThe effect of dissolved water on the viscosities of hydrophobic room-temperature ionic liquids.
Data for viscosity vs. water content for three hydrophobic room-temperature ionic liquids show that their viscosities are strongly dependent on the amount of dissolved water.
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ورودعنوان ژورنال:
- Chemical communications
دوره 52 10 شماره
صفحات -
تاریخ انتشار 2016