TY - JOUR
T1 - High energy chelating coating improves the combustion performance and propellant compatibility of AL-5Li alloy powder
AU - Fu, Hongdi
AU - Wang, Shuo
AU - Liu, Xuanyan
AU - Zhao, Yonghao
AU - Wang, Haiyang
AU - Tang, Siyuan
AU - Zhu, Huaqiang
AU - Yan, Wenya
AU - Xu, Kangcheng
AU - Zhu, Lixiang
AU - He, Ziqi
AU - Song, Tinglu
AU - Zhu, Youqi
AU - Li, Xiaodong
AU - Zou, Meishuai
N1 - Publisher Copyright:
© 2025
PY - 2025/9/1
Y1 - 2025/9/1
N2 - Aluminum-lithium alloy powder fuel is commonly used as a propellant because of its high combustion energy and energy-release level. However, the high reactivity of Li leads to poor compatibility of the Al-Li alloy powder with other propellant composites. In this study, a chelate of carboxymethyl cellulose sodium (CMC) and aluminum ions, with high viscosity and a large number of hydroxyl groups, was prepared and coated onto the surface of an Al-Li alloy powder. The high-energy compound azide glycidyl ether (GAP) was further introduced onto the surface via a synergistic interaction with the Al3+-CMC chelate, forming layer-by-layer coated aluminum–lithium-based fuel Al-5Li@CMC@GAP. The combustion heat, ignition properties, and thermal stability of the fuel were enhanced after the coating. The combustion heat of Al-5Li@CMC@GAP increased by 9.98 % compared to that of the raw Al-5Li powder. In addition, Al-5Li@CMC@GAP burned with bright flames with a shorter combustion duration. The dense coating layer of Al-5Li@CMC@GAP was maintained even after aging for 3 months in the propellant. Therefore, Al-5Li@CMC@GAP can be used as an alloy fuel in composite solid propellants with good compatibility and storage durability and will play an important role in aviation and defense fields.
AB - Aluminum-lithium alloy powder fuel is commonly used as a propellant because of its high combustion energy and energy-release level. However, the high reactivity of Li leads to poor compatibility of the Al-Li alloy powder with other propellant composites. In this study, a chelate of carboxymethyl cellulose sodium (CMC) and aluminum ions, with high viscosity and a large number of hydroxyl groups, was prepared and coated onto the surface of an Al-Li alloy powder. The high-energy compound azide glycidyl ether (GAP) was further introduced onto the surface via a synergistic interaction with the Al3+-CMC chelate, forming layer-by-layer coated aluminum–lithium-based fuel Al-5Li@CMC@GAP. The combustion heat, ignition properties, and thermal stability of the fuel were enhanced after the coating. The combustion heat of Al-5Li@CMC@GAP increased by 9.98 % compared to that of the raw Al-5Li powder. In addition, Al-5Li@CMC@GAP burned with bright flames with a shorter combustion duration. The dense coating layer of Al-5Li@CMC@GAP was maintained even after aging for 3 months in the propellant. Therefore, Al-5Li@CMC@GAP can be used as an alloy fuel in composite solid propellants with good compatibility and storage durability and will play an important role in aviation and defense fields.
UR - http://www.scopus.com/inward/record.url?scp=105000992700&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2025.135181
DO - 10.1016/j.fuel.2025.135181
M3 - Article
AN - SCOPUS:105000992700
SN - 0016-2361
VL - 395
JO - Fuel
JF - Fuel
M1 - 135181
ER -