XLDB与NEPE推进剂催化燃烧性能的研究

Combustion Characteristics of XLDB and NEPE Propellants with Catalyst

制备了几种含燃烧催化剂的XLDB和NEPE推进剂,利用静态靶线法测试了其燃速。结果表明,对XLDB推进剂,一元水杨酸铅与一元水杨酸铜复配,二者比例为1.5∶0.5时,可使XLDB推进剂压力指数降低27.1%;其它铅、铜盐复配,只增加XLDB推进剂的燃速,对降低其压力指数效果不大;一元水杨酸铅与钼酸镍或氧化钍复配,燃速和压力指数高于和一元水杨铜复配;钼酸镍与其它燃速催化剂复配,不能降低压力指数,但燃速略有提高。对NEPE推进剂,碳酸铅的用量增加,有利于压力指数的降低;多组元燃烧催化剂对NEPE推进剂燃速和压力指数有一定影响,但和双组元的相比,并无大的差异。

XLDB and NEPE propellants with catalysts were prepared. Their burning rates were measured by strand burner method. The results show that pressure exponent of XLDB propellant decreases by 27.1% when the contents of lead monosalicylate and copper monosalicylate are 1.5% and 0.5% , respectively. But when other lead salts and copper salts are added to XLDB propellant, the burning rate of XLDB propellant increases, and pressure exponent of XLDB propellant does not decrease. The burning rate and pressure exponent of XLDB propellant with lead monosalicylate and nickel molybdate, or thorium dioxide are higher than that of XLDB propellant with lead monosalieylate and copper monosalieylate. The pressure exponent of XLDB propellant does not decrease and the burning rate of XLDB propellant increases a little when nickel molybdate and other catalysts are added to XLDB propellant. With the increasing of contents of lead carbonate, the pressure exponent of NEPE propellant decreases. The pressure exponent of NEPE propellant decreases by 34.7% when the contents of lead carbonate and carbon black are 2% and 0.5% , respectively. The effect of catalysts of multiple components influencing burning rate and pressure exponent of NEPE propellant is same as catalyst of two components, for example lead carbonate and carbon black.