含能复合催化剂对微烟推进剂燃烧性能的影响

为研究含能催化剂对微烟推进剂燃烧性能的影响,制备了多种含复合含能催化剂的RDX-CMDB推进剂,利用靶线法测定了推进剂在不同压力下的燃速,并对测试结果进行了线性回归.结果表明,在研究的含能催化剂中,2HDNPPb/2HDNPCu和4HDNPPb/2HDNPCu复合催化剂对推进剂有更好的催化效率和降低压力指数的能力.将含能复合催化剂与单一含能催化剂的催化作用进行比较得出,当催化剂加入量一定时,羟基吡啶铅盐、铜盐复合使用比单一的铅盐或铜盐有更好的催化效果.

Effect of Novel Energetic Composite Catalysts on Combustion Properties of Minimum Smoke Propellant

In order to investigate the effect of novel energetic catalysts on the combustion properties of minimum smoke propellant, the RDX-CMDB propellant samples containing various energetic composite catalysts were prepared through a solventless extrusion technique.The propellant burning rates at different pressures were measured by a strand burner and the experimental data were treated and analyzed with a linear regression method.The results show that in the energetic catalysts studied,lead salt of 2-hydroxy-3,5-dinitropyridine(2HDNPPb)/copper salt of 2-hydroxy-3,5-dinitropyridine(2HDNPCu) and lead salt of 4-hydroxy-3,5-dinitropyridine(4HDNPPb)/2HDNPCu composite catalysts possess better catalytic effect and ability to reduce pressure exponent for the propellant.In comparison with single energetic lead salt or copper salt,the mixtures of lead and copper salts of hydroxypyridines have higher catalytic efficiency when the total content of catalyst added is constant.