低燃速低燃温双基推进剂燃烧性能的调节

Adjustment on the Combustion Performance of Low Flame Temperature and Low Burning Rate Double Base Propellant

为调节低燃速燃温双基推进剂的燃烧性能(燃速及压强指数),探索铅、铜盐和碳黑等燃烧催化剂在该类推进剂中的催化效果,从理论燃温在900～1700K的低燃速双基推进剂中选出4种作为基础配方,分别加入不同种类的铅盐、铜盐及碳黑等燃烧催化剂,改变催化剂的加入量及搭配关系,进行了一系列试验研究。同时还研究了辅助增塑剂对推进剂燃烧性能的影响。结果表明,常规的铅、铜盐和碳黑等催化剂在低燃速低燃温推进剂中仍能发挥催化作用,作用效果与催化剂的品种及加入量相关,特别是使用复合催化剂时,对燃烧性能的调节更为有效。不同品种的辅助增塑剂对燃烧性能也有影响。

To adjust the combustion performances of low flame temperature and low burning rate propellants, some catalysts, shch as lead salts, copper salts, carbon black and assistant plasticizer were appended into four low buring rate formulations, whose theoretical flame temperature ranged from 900K to 1700 K, and the function of the catalysts and their additive amount were tested. The results show that those usual catalysts can also work upon low flame temperature and low burning rate DB propellants. The variety of catalysts have different effects on burning rate and pressure exponent, and the combined catalysts can improve the combustion performance obviously. Besides, assistant plasticizer can also affect the combustion performance.