二硝基胍在固体推进剂中的能量性能分析

Analysis of energy performance of dinitroguanidine in solid propellants

为考察新型含能化合物二硝基胍(DNGu)对固体推进剂能量性能的影响,采用能星5.0版程序,模拟计算了DNGu替换CMDB(复合改性双基)、HTPB(端羟基聚丁二烯)推进剂中的AP(高氯酸铵),替换NEPE(硝酸酯增塑剂聚醚)、GAP(聚叠氮缩水甘油醚)推进剂中的主氧化剂AP和次级氧化剂HMX(环四亚甲基四硝胺)后体系的能量效果。结果显示:DNGu单质推进剂平衡流比冲比ADN(二硝酰胺铵)、AP要高得多;DNGu对4种推进剂配方体系能量贡献均优于AP,如果设计合适的配方体系,DNGu对CMDB推进剂能量贡献超越ADN;DNGu作为GAP推进剂中主氧化剂时,能量水平高于AP,作为次级氧化剂时,能量水平低于HMX;DNGu作为NEPE推进剂主氧化剂时,理论比冲存在最大值,替换HMX作为次级氧化剂时,理论比冲降低。

In order to evaluate the influence of novel energetic compound dinitroguanidine（DNGu） on the energy performance of solid propellants, using the Energy Star Program（version 5.0）, the system energy effects in case of replacing AP（ammonium perchlorate） in CMDB（composite modified double base）, HTPB（hydroxyl-terminated polybutadiene） propellants, and replacing the primary oxidizer AP and the secondary oxidizer HMX（cyclotetramethylene tetranitramine） in NEPE（nitrate ester plasticized polyether） propellants, GAP（polyazido glycidyl ether） propellants with DNGu were simulatively calculated. The results show that the balance flow specific impulse of DNGu elemental propellant is much higher than that of ADN（ammonium dinitramide） and AP. The contributions of DNGu on the energies of four propellant formulation systems are all superior to those of AP. If the suitable formulation system is designed, the contribution of DNGu on the energy of CMDB propellant exceeds that of ADN. When DNGu is used as the primary oxidizer in GAP propellant, its energy level is higher than AP; when it is used as the secondary oxidizer, its energy level is lower than HMX. When DNGu is used as the primary oxidizer in NEPE propellant, the theoretical specific impulse possesses the maximum value; when it is used as the secondary oxidizer replacing HMX, the theoretical specific impulse decreases.