【摘要】 在298.15 K下用精密转动弹热量计测得4-羟基-3,5-二硝基吡啶铅盐(4HDNPPb)的燃烧能ΔcU为(-7385.82±3.14)J.g-1;据此计算的标准摩尔燃烧焓ΔcΗmθ为(-4499.63±1.92)kJ.mol-1,标准摩尔生成焓ΔfΗmθ为(-796.65±2.32)kJ.mol-1。研究了4HDNPPb和含能铜盐(或惰性铜盐)的混合物在RDX-CMDB推进剂燃烧中的催化作用,结果表明,复合催化剂体系:2.5%4-羟基-3,5-二硝基吡啶铅盐(4HDNPPb)与0.5%2-羟基-3,5-二硝基吡啶铜盐(2HDNPCu)的混合物,或2.5%4HDNPPb与0.5%邻苯二甲酸铜(-Cu)的混合物,使RDX-CMDB推进剂的燃烧在所测压力范围内(2~20 MPa)有较高的催化效率,压力指数小于0.3。更多还原

【Abstract】 The constant-volume combustion energy Δ_cU（4HDNPPb,s,298.15 K） of lead salt of 4-hydroxy-3,5-dinitropyridine（4HDNPPb） was determined as（-7385.82±3.14） J·g^-1 at（298.15 K） by a precise rotating bomb calorimeter.The standard molar enthalpy of combustion Δ_cH^θ_m（4HDNPPb,s,（298.15 K）） and standard molar enthalpy of formation Δ_fH^θ_m（4HDNPPb,s,（298.15 K）） of 4HDNPPb were calculated to be（-4499.63±1.92） kJ·mol^-1 and（-796.65±2.32） kJ·mol^-1,respectively.Moreover,the catalysis of composite catalyst system,4HDNPPb/energetic copper salt mixture or 4HDNPPb/non-energetic copper salt mixture on the combustion of RDX-CMDB propellant was investigated.The results show that composite catalyst,2.5%/0.5%-ω（4HDNPPb）/ω（2HDNPCu） mixture or 2.5%/0.5%-ω（4HDNPPb）/ω（-Cu,copper phthalate） mixture,has higher catalytic efficiency in catalyzing RDX-CMDB propellant combustion and enables the pressure exponent of the propellant to be less than 0.3.更多还原