含2-偕二硝甲基-5-硝基四唑羟胺盐的推进剂能量特性计算  

Computational Investigation of Energy Characteristics of Propellant Containing Hydroxylammonium 2-Dinitromethy1-5-nitrotetrazolate

作　　者：张敏[1] 毕福强[1] 许诚[1] 刘庆[1] 葛忠学[1] 王伯周[1] 汪伟[1] 朱勇[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《含能材料》2015年第9期865-870,共6页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金资助(21373157)

摘　　要：采用最小自由能法,在标准状态下（膨胀比为70/1）,计算了含2-偕二硝甲基-5-硝基四唑羟胺盐（HADNMNT）的丁羟复合推进剂和改性双基推进剂的能量特性。理论计算可知,HADNMNT单元推进剂的密度比冲为4936.4 N·s·dm-3,高于黑索今（RDX）,低于奥克托今（HMX）和六硝基氮杂异伍兹烷（CL-20）;利用HADNMNT完全取代高氯酸铵（AP）后,丁羟复合推进剂的比冲提高了428.7 N·s·kg-1;绘制了HADNMNT与RDX、Al组成的丁羟复合推进剂的等比冲三角图,直观的反映了比冲与配方的关系,HTPB、HADNMNT、RDX及Al的含量分别为10%、60%-62%、14%-16%以及14%-15%时,获得推进剂的最高理论比冲为2778.9 N·s·kg-1。利用HADNMNT完全取代RDX后,改性双基推进剂的比冲为2522.9 N·s·kg-1：通过添加Al并调节HADNMNT与Al在改性双基推进剂中的含量,获得推进剂的优化配方为：NC 25%,NG 33%,HADNMNT 11%,Al 20%,DINA 3.5%,其他助剂7.5%,其理论比冲为2598.5 N·s·kg-1。Under the standard condition （ratio of chamber pressure to exit pressure （Pc ：Pe） is 70/1 ）, the energy parameters of HTPB and CMDB propellants containing hydroxylammonium 2-dinitromethyl-5-nitrotetrazole （HADNMNT） were calculated by minimum free energy method. The density impulse of the HADNMNT monopropellant is 4936.4 N · s· cm-3, which is higher to that of the RDX and lower to HMX and CL-20. Replacing AP with HADNMNT in HTPB propellant can increase specific impulse by 428.7 N · s · kg-1. The iso-impulse trigonal figure of the HTPB propellant is drawn out, and the relationship between specific im- pulse and ingredients was discovered. The impulse of HTPB propellant is up to 2778.9 N · s · kg-1 , when the mass fractions of HTPB, HADNMNT, RDX andAI powder are l 0% , 60%-62%, 14%-16% and 14%-15%, respectively. Replacing RDX with HADNMNT in smokeless CMDB propellant, the specific impulse increases to 2522.9 N · s · kg-1. Moreover, the specific impulse of CMDB propellant can be remarkably improved through adjusting the mass fractions of HADNMNT and AI powder. The impulse of CMDB propellant reaches 2598.5 N · s · kg-1, when the mass fractions of NC, NG, HADNMNT, AI, DINA and AI powder are25%, 33%. 11%. 20%. 3.5% and 7.5%. resDectively.

关 键 词：2-偕二硝甲基-5-硝基四唑羟胺盐(HADNMNT) 氧化剂 高能推进剂 能量特性 

分 类 号：V51[航空宇航科学与技术—航空宇航推进理论与工程]