TY - JOUR
T1 - Study on Properties of Energetic Plasticizer Modified Double-Base Propellant
AU - Zou, Xiaobin
AU - Zhang, Wenguo
AU - Zhang, Zehao
AU - Gu, Yongjun
AU - Fu, Xiuchong
AU - Ge, Zhen
AU - Luo, Yunjun
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/11
Y1 - 2021/11
N2 - To improve the low-temperature mechanical properties of double-base propellants, the effects of three energetic plasticizers (geminal dinitro aldehyde acetal plasticizer, azido-terminated glycidyl azide polymer, and ester-terminated glycidyl azide polymer) on the low-temperature mechanical properties of nitrocellulose (NC)/nitroglycerin (NG) propellant were studied firstly in this article. It was found that azido-terminated glycidyl azide polymer (GAPA) was the most effective plasticizer to improve the low-temperature mechanical properties of NC/NG propellant. Then the effects of GAPA on the low-temperature static tensile mechanical properties, thermal stability, dynamic thermomechanical properties, density, and heat of detonation of fully-formulated double-base propellant with ETPE were studied. It was found that the double-base propellant with 1 % GAPA had the best comprehensive performance, and its maximum tensile strength and elongation at break at low temperature (−40 °C) were 56.16 MPa and 10.63 %, respectively. The elongation at break was increased by 10.2 % compared to the double-base propellant without an energetic plasticizer. Meanwhile, the correlation between dynamic and static mechanical properties of the double-base propellant with 1 % GAPA was also studied, and the relationship between the dynamic storage modulus and the static tensile strength was obtained.
AB - To improve the low-temperature mechanical properties of double-base propellants, the effects of three energetic plasticizers (geminal dinitro aldehyde acetal plasticizer, azido-terminated glycidyl azide polymer, and ester-terminated glycidyl azide polymer) on the low-temperature mechanical properties of nitrocellulose (NC)/nitroglycerin (NG) propellant were studied firstly in this article. It was found that azido-terminated glycidyl azide polymer (GAPA) was the most effective plasticizer to improve the low-temperature mechanical properties of NC/NG propellant. Then the effects of GAPA on the low-temperature static tensile mechanical properties, thermal stability, dynamic thermomechanical properties, density, and heat of detonation of fully-formulated double-base propellant with ETPE were studied. It was found that the double-base propellant with 1 % GAPA had the best comprehensive performance, and its maximum tensile strength and elongation at break at low temperature (−40 °C) were 56.16 MPa and 10.63 %, respectively. The elongation at break was increased by 10.2 % compared to the double-base propellant without an energetic plasticizer. Meanwhile, the correlation between dynamic and static mechanical properties of the double-base propellant with 1 % GAPA was also studied, and the relationship between the dynamic storage modulus and the static tensile strength was obtained.
KW - Energetic plasticizer
KW - correlation between dynamic
KW - double-base propellant
KW - low-temperature mechanical property
KW - static mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85117178660&partnerID=8YFLogxK
U2 - 10.1002/prep.202100085
DO - 10.1002/prep.202100085
M3 - Article
AN - SCOPUS:85117178660
SN - 0721-3115
VL - 46
SP - 1662
EP - 1671
JO - Propellants, Explosives, Pyrotechnics
JF - Propellants, Explosives, Pyrotechnics
IS - 11
ER -