2,4-二羟基苯甲酸铋对双基推进剂燃烧的催化作用  

Catalysis of Bismuth 2,4-Dihydroxylbenzoate in Combustion of Double-base Propellant

作　　者：宋秀铎[1] 赵凤起[1] 徐司雨[1] 高红旭[1] 高茵[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2006年第1期36-39,共4页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金资助项目(20573098);国防科技重点实验室基金资助项目(51455030205ZS3505)

摘　　要：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 evaluate the efficiency of bismuth 2,4-dihydroxylbenzoate （β-Bi） on catalyzing burning of propellant and search for its effect mechanism, the sample of propellant containing β-Bi is prepared by extrusion technology, and the catalytic performance of β-Bi in the combustion of double-base propellant was investigated. The results show that β-Bi possesses good catalytic effect on combustion of double base propellant and an excellent ability to enhance burning rate and reduce pressure exponent. When β-Bi together with a little carbon black （CB） and copper salt is used, the catalytic effect is better. The thermal decomposition mechanism of β-Bi was investigated by the simultaneous device of the solid reaction cell in situ/ RSFT-IR,discovering that the active component in the catalytic combustion process of propellant was Bi2O3.

关 键 词：燃烧化学 2 4-二羟基苯甲酸铋 燃烧催化剂 双基推进剂 催化机理 

分 类 号：TQ245.4[化学工程—有机化工] O643.36[理学—物理化学]