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通过激光粒度仪分析了Mg/Al合金粉的粒径及粒度分布。利用TG-DSC热分析仪分析推进剂的热分解特性。用燃烧实验装置研究了推进剂的火焰结构,并对CMDB,Al-CMDB,Mg-CMDB和Mg/Al-CMDB推进剂四种火焰结构进行比较。用SEM和EDS研究了CMDB推进剂的熄火表面形貌和表面特征组成。结果表明:Mg/Al-CM-DB推进剂在DSC曲线上存在一放热峰660.3℃。Mg/Al合金粉改变了推进剂的燃烧状态,提高金属燃料Al粉的燃烧效率。
The particle size and particle size distribution of Mg / Al alloy powder were analyzed by laser particle sizer. The thermal decomposition characteristics of propellants were analyzed by TG-DSC thermal analyzer. The flame structure of the propellants was investigated by means of a combustion experiment device and the four flame structures of CMDB, Al-CMDB, Mg-CMDB and Mg / Al-CMDB propellants were compared. The flameout surface morphology and surface features of CMDB propellants were studied by SEM and EDS. The results show that there is an exothermic peak of 660.3 ℃ on the DSC curve of Mg / Al-CM-DB propellant. The Mg / Al alloy powder changes the combustion state of the propellant and improves the combustion efficiency of the Al powder, which is a metal fuel.