Affecting Factors and Chemical Reaction Mechanism of Composite Solid Propellants during the Aging Process
Received:September 14, 2023  Revised:October 14, 2023
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DOI:10.7643/issn.1672-9242.2023.10.008
KeyWord:solid propellant  aging process  affecting factors  action mode  chemical reaction  mechanism  failure mode
                       
AuthorInstitution
HUO Wen-long School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
XIE Li-na School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
SUN Xue-ying School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
ZHANG Ting-ting School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
ZHANG Jian School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
XIA De-bin School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
YANG Yu-lin School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
LIN Kai-feng School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin , China
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Abstract:
      Based on storage aging of solid propellants, the research progress of various affecting factors, action mode and chemical reaction mechanism on the aging process of solid propellants in recent years is reviewed with NEPE propellants and HTPB propellants as the representatives. The effects of external environmental factors such as temperature and humidity, stress and ambient atmosphere, formula properties, composition changes and additives on propellant aging and storage failure time are summarized. The mechanism of internal and external factors to accelerate or slow down the aging process of solid propellant is analyzed from micro and macro perspectives. In addition, the oxidative crosslinking, decomposition and chain breaking of chemical components such as adhesives, oxidants and antioxidants during propellant aging are summarized, and the mechanism and reasons of each reaction are analyzed. Finally, the future development trend of the research on the affecting factors of solid propellant aging is prospected, and the research routes for the research on the aging mechanism and failure mode of solid propellant in the future are provided.
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