二硝酰胺铵复合推进剂燃烧性能研究

Study on Combustion Properties of Ammonium Dinitramide Composite Propellants

为降低复合固体推进剂特征信号,利用新型聚醚黏合剂制备了含绿色氧化剂二硝酰胺铵(ADN)的复合推进剂.燃速测试表明,ADN复合推进剂燃速高于相应的高氯酸铵(AP)复合推进剂,燃速压力指数较高.热失重分析表明,聚醚黏合剂体系起始热分解温度为235℃,ADN复合推进剂起始热失重温度与相应AP复合推进剂相同,热失重曲线低于相应AP复合推进剂.扫描电镜分析显示,含ADN复合推进剂燃烧熄火表面存在明显熔融层.

To weaken plume signature of composite solid propellants, a propellant containing freehalogen oxidant, ammonium dinitramide（ADN）, was prepared successfully by employing a newtype polyether binder. The test results indicated that, compared with the composite ammonium perchlorate（AP） propellant, the composite ADN propellant is of higher burning rate and higher burning rate-pressure exponent. Thermo-gravimetric analysis shows that the initial thermal decommposition temperature of polyether binder is 235℃, and the initial thermal decompositon temperatures of composite ADN propellants is identical with the corresponding composite AP propellants. But the thermo gravimetric curves composite ADN propellants are lower than those of composite AP propellants. Scaning electron microscopy analysis suggests that there exists a thicker melting layer on the quenched surface of composite ADN propellant.