论文部分内容阅读
为了考察2,4-二羟基苯甲酸铋对双基推进剂燃烧的催化效果以及探索其催化作用机理,用螺压工艺制备了含2,4-二羟基苯甲酸铋的推进剂样品,研究了2,4-二羟基苯甲酸铋对双基推进剂燃烧的催化性能。结果表明,2,4-二羟基苯甲酸铋对双基系推进剂的燃烧具有良好的催化作用,能显著提高推进剂的燃速,并大大降低压力指数,与少量碳黑复合后,对提高推进剂的燃速效果更明显,铋盐、铜盐与碳黑三元复合后,催化效果更优。用快速热裂解固相原位池/傅里叶变换红外光谱(RSFT-IR)联用装置研究了2,4-二羟基苯甲酸铋的热分解机理,发现2,4-二羟基苯甲酸铋在催化推进剂燃烧过程中的活性组分为B i2O3。
In order to investigate the catalytic effect of bismuth 2,4-dihydroxybenzoate on the combustion of bi-based propellants and to explore their catalytic mechanism, a propellant sample containing bismuth 2,4-dihydroxybenzoate was prepared by using a screw-press process. Catalytic Performance of Bismuth 2,4 - Dihydroxybenzoates on Combustion of Double Base Propellants. The results show that bismuth 2,4-dihydroxybenzoate has a good catalytic effect on the combustion of bismuth-based propellants, can significantly improve the burning rate of propellants, and greatly reduce the pressure index, with a small amount of carbon black composite, to improve Propellant burning rate effect is more obvious, bismuth salt, copper salt and carbon black ternary complex, the catalytic effect is better. The mechanism of thermal decomposition of bismuth 2,4-dihydroxybenzoate was studied with a rapid pyrolysis solid-phase in situ cell / Fourier transform infrared spectroscopy (RSFT-IR) apparatus and found that bismuth 2,4-dihydroxybenzoate The active component in the catalytic propellant combustion process is Bi2O3.