TY - JOUR
T1 - From heart drug to propellant fuels
T2 - Designing nitroglycerin-ionic liquid composite as green high-energy hypergolic fluids
AU - Wang, Zhi
AU - Wang, Binshen
AU - Guo, Yang
AU - Jin, Yunhe
AU - Fei, Lihan
AU - Huang, Shi
AU - Zhang, Wenquan
AU - Tang, Chenglong
AU - Zhang, Qinghua
N1 - Publisher Copyright:
© 2021
PY - 2021/11
Y1 - 2021/11
N2 - New-generation green bipropellants based on ionic liquids for aircraft have attracted the attention of researchers. However, the major defects of ionic liquid propellants are their low specific impulse and incomplete combustion, which limits their practical application. In this work, a series of novel hypergolic fluids were prepared by mixing oxygen-rich nitroglycerin (NG) with fuel-rich dicyanamide-based ionic liquids. The complete dissolution of NG in ionic liquids makes these hypergolic fluids became self-supplying oxygen composite fuels, which generate much less solid residual products than pure hypergolic ionic liquids (HILs). Moreover, the addition of NG inhibited the micro-explosion between fuel and white fuming nitric acid (WFNA), extended the contact time between fuel and oxidizer. And a proper amount of NG in the fuel could suppress the secondary combustion. These composite fuels have high density (>1 g cm−3), low viscosity (as low as 13.49 cP), wide liquid operating ranges and acceptable ignition delay time. Additionally, the specific impulses of the composite fuels were higher than pure HILs. For the first time, this work provides a simple and reliable method to control the ignition properties of HIL by adding oxygen-enriched additives.
AB - New-generation green bipropellants based on ionic liquids for aircraft have attracted the attention of researchers. However, the major defects of ionic liquid propellants are their low specific impulse and incomplete combustion, which limits their practical application. In this work, a series of novel hypergolic fluids were prepared by mixing oxygen-rich nitroglycerin (NG) with fuel-rich dicyanamide-based ionic liquids. The complete dissolution of NG in ionic liquids makes these hypergolic fluids became self-supplying oxygen composite fuels, which generate much less solid residual products than pure hypergolic ionic liquids (HILs). Moreover, the addition of NG inhibited the micro-explosion between fuel and white fuming nitric acid (WFNA), extended the contact time between fuel and oxidizer. And a proper amount of NG in the fuel could suppress the secondary combustion. These composite fuels have high density (>1 g cm−3), low viscosity (as low as 13.49 cP), wide liquid operating ranges and acceptable ignition delay time. Additionally, the specific impulses of the composite fuels were higher than pure HILs. For the first time, this work provides a simple and reliable method to control the ignition properties of HIL by adding oxygen-enriched additives.
KW - Drop Test
KW - Hypergolic ignition
KW - Ionic liquids
KW - Nitroglycerin
UR - http://www.scopus.com/inward/record.url?scp=85111269913&partnerID=8YFLogxK
U2 - 10.1016/j.combustflame.2021.111597
DO - 10.1016/j.combustflame.2021.111597
M3 - 文章
AN - SCOPUS:85111269913
SN - 0010-2180
VL - 233
JO - Combustion and Flame
JF - Combustion and Flame
M1 - 111597
ER -