Study on Properties of Energetic Plasticizer Modified Double-Base Propellant

Xiaobin Zou, Wenguo Zhang, Zehao Zhang, Yongjun Gu, Xiuchong Fu, Zhen Ge*, Yunjun Luo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1662-1671
Number of pages10
JournalPropellants, Explosives, Pyrotechnics
Volume46
Issue number11
DOIs
Publication statusPublished - Nov 2021

Keywords

  • Energetic plasticizer
  • correlation between dynamic
  • double-base propellant
  • low-temperature mechanical property
  • static mechanical properties

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