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采用高倍率的扫描电镜观察了Cs盐的微观形貌,利用最小自由能法计算了不同含量Cs盐的复合推进剂能量性能并进行了测试,对Cs盐、含Cs盐复合推进剂的安全性能(撞击感度和摩擦感度)进行了评价,并对不同含量Cs盐推进剂的燃烧性能和燃烧火焰结构等性能进行了研究。结果表明,Cs盐的颗粒粒径较大,表面凹凸不平很不规则;含Cs盐复合推进剂的能量随Cs盐质量分数的增加稍有减小,推进剂密度从1.766 g/cm3提高到1.851 g/cm3;相对于AP,Cs盐和含Cs盐复合推进剂的感度均较低,当Cs盐含量为6%时,复合推进剂的机械感度最低,说明Cs盐在复合推进剂中应用是安全可行的;复合推进剂的燃速随Cs盐质量分数的增加而增大,当Cs盐含量为6%时,复合推进剂的压力指数降低幅度最大。
The microscopic morphology of Cs salt was observed by high magnification scanning electron microscope. The energy performance of composite propellant with different content of Cs salt was calculated by minimum free energy method. The safety performance of Cs salt and Cs salt composite propellant was studied. (Impact sensitivity and friction sensitivity) were evaluated, and the combustion performance and combustion flame properties of Cs salt propellants with different contents were studied. The results show that the particle size of Cs salt is larger and its surface irregularities are irregular. The energy of Cs salt composite propellant slightly decreases with the increase of Cs salt mass fraction, and the density of propellant increases from 1.766 g / cm3 to 1.851 g / cm3. Compared with AP, the sensitivity of Cs salt and Cs salt-containing composite propellant was low. When the content of Cs salt was 6%, the mechanical sensitivity of composite propellant was the lowest, which indicated that the application of Cs salt in composite propellant was Safe and feasible. The burning rate of composite propellant increased with the increase of Cs salt mass fraction. When the content of Cs salt was 6%, the pressure drop of composite propellant decreased the most.