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。 The combustion energy ΔcU of 4-hydroxy-3,5-dinitropyridine lead salt (4HDNPPb) was (-7385.82 ± 3.14) Jg-1 measured at 298.15 K with a precision rotary calorimeter; the calculated standard molar The enthalpy of combustion ΔcHmθ was (-4499.63 ± 1.92) kJ · mol-1, and the standard enthalpy of formation ΔfHmθ was (-796.65 ± 2.32) kJ · mol-1. The catalytic effect of the mixture of 4HDNPPb and energetic copper salt (or inert copper salt) on the combustion of RDX-CMDB propellants was studied. The results showed that the composite catalyst system consisted of 2.5% lead 4-hydroxy-3,5-dinitropyridine (4HDNPPb) with 0.5% 2-hydroxy-3,5-dinitropyridine copper salt (2HDNPCu) or a mixture of 2.5% 4HDNPPb and 0.5% copper phthalocyanine (RDX- The combustion of CMDB propellant has higher catalytic efficiency in the measured pressure range (2 ~ 20 MPa), and the pressure index is less than 0.3.