低燃速低燃温双基推进剂的催化燃烧

研究了含普通铅、铜盐催化剂的低燃速、低燃温双基推进剂的燃烧性能、热分解性能及熄火表面形貌特征和元素分布。观察到如下试验现象：(1)熄火试样表面元素分布不均匀，C元素和催化剂在熄火表面均有不同程度的积累；(2)含催化剂的试样燃烧熄火表面有大小不等的球体出现，催化剂不同，形成的球体直径分布不同，球体成分以Pb为主，兼有少量其它元素，各球体相互连接形成链状、短枝状；(3)含和不含催化剂的配方未燃表面无球体出现。结果表明，适用于普通双基推进剂的铅、铜盐催化剂在低燃速低燃温双基推进剂中同样具有催化作用，对热分解性能也有重要影响。

The Catalytic Combustion of DB Propellant with Low Burning Rate and Low Flame Temperature

The combustion performance, thermal decomposition, and quenched surface appearance and element distribution of double-base (DB) propellant containing general lead and copper salt catalysts with low burning rate and low flame temperature were investigated. The following experimental phenomena were observed: (1) the elements distribution of quenched samples surface were not uniform, and element C and catalysts existed accumulation to some degree; (2) the quenched surfaces of samples containing catalysts appeared different balls, and different catalysts formed the balls with different diameter distribution,the main compositions of the balls were Pb elements, and the others were small amount of other elements and these balls connected to form long chain and short branch one another; (3) the uncombustion surfaces of samples with or without catalysts had no balls. The results indicated that general lead and copper salt catalysts used in common DB propellants also had catalytic effect on DB propellant with low burning rate and low flame temperature,and also have great effects on thermal decomposition.