催化AP的作用部位研究

INVESTIGATION OF ACTION POSITION OCCURED IN THE CATALYST DECOMPOSITION OF AP

关键词:  催化剂  推进剂燃烧  燃烧速率  推进剂压力指数

Key words:  Catalyst  Propellant combustion  Burning rate  Propellant pressure exponent

摘要:

利用高压DTA、飞行时间质谱仪、夹层燃烧、燃速测试等方法,研究了催化剂的两种加入方式和不同催化剂用量与AP共晶的催化效果。发现含催化剂的AP分解机理发生变化,主要由电子转移改变为同时并存的质子和电子转移;还发现催化剂与AP接触面越大效果越好,从而得出,催化剂的主要作用部位是作用于AP晶粒上。

Abstract:

By using high-ptessure DTA,time-of-fight mass spectrometer, sandwich burning and deteimination of steadystate burning, the catalyti-cal mechanism of AP decomposition is investigated with two different addition means, and different content of catalysts. It is found that AP decomposite mechanism changs from eletron transfer to the simultaneous transfer of both eletron and proton. It is also found that catalytical effect increases with increasing the interface of AP and catalysts. Therefore, it can be concluded that catalysis occurs mainly at the surface of AP crystalline grain.