钝感氧化剂对PBT基推进剂低易损性的影响

Influence of insensitive oxidants on low vulnerability of PBT-based propellants

为探索钝感氧化剂-PSAN对PBT基固体推进剂低易损性的影响,在保证样品配方性能不发生显著改变的基础上,采用PSAN替代AP,并对2种推进剂及装药开展研究。结果表明,当完全采用AP作为氧化剂时,样品在慢速烤燃试验、射流撞击试验及殉爆试验中反应等级分别为爆炸、燃烧、爆轰;当采用PSAN部分替代AP后,样品在慢速烤燃试验中反应温度由163.2℃降低至128.6℃,反应等级由爆炸降低为燃烧,并在射流撞击试验及殉爆试验中反应等级分别降低至爆炸、燃烧以下。表明PSAN的加入可以有效改善PBT基固体推进剂的低易损性能。

In order to explore the effect of insensitive oxidant(PSAN)on the low vulnerability of PBT-based solid propellants,PSAN was used to partially replace AP,and the low-vulnerability properties of the two propellants and charges were studied on the basis of no significant change in the properties.The results show that when AP is completely used as the oxidant,the reaction grades of the samples are explosion,detonation and detonation in the slow cook-off test,jet impact test and sympathetic test,respectively.When PSAN was used to partially replace AP,the reaction temperature of the sample decreased from 163.2℃to 128.6℃in slow cook-off test,and the reaction level was reduced from explosion to combustion.What is more,the reaction level was reduced to explosion and below combustion in the jet impact test and the sympathetic test,respectively.In conclusion,the addition of PSAN can effectively improve the low vulnerability of PBT-based solid propellants.