摘要
采用浇铸工艺制备了含偶氮四唑胍盐(GZT)的RDX-CMDB推进剂,系统地研究了含GZT的RDX-CMDB推进剂的能量性能、燃烧性能和热安全性能等。理论计算和实验研究结果表明:RDX-CMDB推进剂的比冲、爆热和燃温随GZT含量的增加而降低,15%的GZT使推进剂的比冲降低了29.2 s,爆热降低了1248 kJ.kg-1,燃烧温度降低了800 K;RDX-CMDB推进剂的成气量随GZT含量的增加而增加,15%的GZT使成气量增加了10.73 mol.kg-1;GZT使RDX-CMDB推进剂燃烧更完全,且高温下(200℃以上)更容易燃爆,但对推进剂在100℃下的热安全性能无明显影响;对于不含有机铅铜催化剂的RDX-CMDB推进剂,G ZT使推进剂燃速升高,压强指数降低,15%的G ZT使推进剂7 MPa下的燃速提高了1 mm.s-1,使7～10 MPa间的压力指数由0.86降低到0.70;对于含有机铅铜催化剂的RD X-CMD B推进剂,G ZT使推进剂的压力指数升高,燃速降低,15%的G ZT使推进剂7 MPa下的燃速下降了3 mm.s-1,7～10 MPa间的压力指数由0.47上升到0.69。热行为研究表明,GZT表现出一单独的分解失重过程。
RDX-CMDB propellants containing guanidinium azotetrazolate（GZT） were prepared by standard cast technique. Properties including energy, combustion, thermal security and the thermal behaviors of RDX-CMDB propellants were studied through tbeoretica） calculations and experimentations. Results indicate that the specific impulse（ Isp ）, explosion heat（Q） and adiabatic combustion temperature of RDX-CMDB propellants decrease with the replacement of RDX by GZT, and gas volume increases. Replacement of RDX with 15% GZT makes the specific impulse, explosion heat and adiabatic combustion temperature decrease 29.2 s, 1248 kJ · kg^-1 and 800 K, respectively, and gas output increase 10.73 mol·kg^-1. GZT makes RDX-CMDB propellants detonate and deflagrate more easily at high temperature above 200℃, but has no obvious influence on thermal security of RDX-CMDB propellants below 100 ℃. For RDX-CMDI3 propellants without the catalysts（ lead and copper composite organic salts）, GZT could increase the burning rates and decrease the pressure exponents of propellants, 15% replacement of RDX by GZT results in the increase of burning rate by 1 mm · s^-1 under 7 MPa and the decrease of pressure exponent from 0.86 to 0.70 under pressure 7 -10 MPa. For RDX-CMDB propellants with the catalyst, GZT decreases the burning rates and increases the pressure exponents of propellants, 15% replacement of RDX by GZT increases the pressure exponent from 0.47 to 0.69 under pressure 7 -10 MPa and decrease the burning rate by 3 mm·s^-1. The TG experiments of RDX-CMDB propellants containing GZT indicate that a mass loss process corresponding to decomposition of GZT appears in the TG curve.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2012年第3期292-296,共5页
Chinese Journal of Energetic Materials
关键词
材料科学
气体发生剂
改性双基推进剂
偶氮四唑胍盐
低燃温
materials science
gas generator
CMDB propellant
guanidinium azotetrazolate
low combustion temperature
