有机铜盐对RDX-CMDB推进剂的燃烧性能和高压热分解的影响

Effects of Organic Copper Salts on Combustion Characteristics and Thermal Decomposition at High Pressure of RDX-CMDB Propellants

研究了三种有机铜盐燃烧催化剂β-雷索辛酸铜(β-Cu)、3-硝基-1,2,4三唑-5-酮铜盐(NTO-Cu)和2,4-二硝基咪唑铜(NI-Cu)对RDX-CMDB推进剂不同压强下的燃烧性能和热分解的影响。结果表明,三种有机铜盐燃烧催化剂对RDX-CMDB推进剂的燃烧性能和差示扫描量热法(DSC)特征量有一定影响;β-Cu、NTO-Cu和NI-Cu三种有机铜盐可使RDX-CMDB推进剂热分解的第一个分解峰温Tp1提前1～4℃,并将第二个分解峰温Tp2提前5～11℃;RDX-CMDB推进剂的燃速和DSC特征量随压强的升高而增大,在1～10MPa压强下该类推进剂的燃速与DSC特征量呈线性相关。

The effects of three organic copper salts,such as copper 2,4-dihydroxybenzoate（β-Cu）,copper 3-nitro-1,2,4-triazol-5-onate（NTO-Cu） and 2,4-dinitroimidazole copper（NI-Cu） salt on combustion characteristics and thermal decomposition of RDX-CMDB propellants were studied at different pressures.Results show that the effects of organic copper salts on the combustion and thermal decomposition characteristics values of RDX-CMDB propellants are obvious.The three organic copper salts can accelerate the thermal decomposition of RDX-CMDB propellants.β-Cu,NTO-Cu and NI-Cu can move up the first peak temperature about 1-4 ℃,and move up the second peak temperature about 5-11 ℃ of RDX-CMDB propellant.The burning rate and thermal decomposition characteristics values of the RDX-CMDB propellants increase with increasing of pressure.The burning rates of RDX-CMDB propellants are related to the thermal decomposition characteristics values of RDX-CMDB propellants at 1-10 MPa.