关键词: 复合推进剂;增塑剂;燃烧催化剂;燃速;力学性能

Abstract: The influences of the glyceryl trinitrate / diethyleneglycol dinitrate(NG+DEGDN) and bis(2,2-dinitropropyl)acetal / bis(2,2-dinitropropyl)formal(A3) plasticizers on performances of composite 3,3-bis(azidomethyl)oxetane-tetrahydrofuran co-polyether(BAMO-THF) propellants have been studied respectively.BAMO-THF/NG+DEGDN propellants showed higher burning rates and better mechanical properties than BAMO-THF/A3 propellants.In addition,the influence of a kind of organic transition metal combustion catalyst(OME) on burning rates and mechanical properties of BAMO-THF propellants has also been investigated.It was found that OME could increase the burning rates of BAMO-THF propellants and improve mechanical properties for BAMO-THF propellants.XPS(X-ray photoelectron spectra) analysis indicated that there existed interaction between OME and azide groups in BAMO-THF copolyether.

Key words: Composite propellants;Plasticizer;Combustion catalyst;Burning rate;Mechanical performance