The nanoparticle Pb(Ⅱ)-Phtalate complex was synthesized by liquid dispersion deposition method using Pb(Ac)2·3H2O and potassium acid phthalate as the reactant. The nanoparticle complexes were characterized with TEM, XRD, TG, DSC and IR. The composition of the nanoparticle PbPht complex was determined by chemical and elemental analysis. The catalytic performance of nanoparticle complex on the combustion of RDX-CMDB propellant was investigated. The results showed the average particle size of complex were about 50 nm. The nanoparticle Pb(Ⅱ)-Phtalate complex can enhance burning-rate of propellant by 135%, and lower the pressure exponent by 74%.
Nanocomposite PbSnO3 was synthesized by coprecipitation method , and its phase evolution process was investigated. The particle size, crystal form, and phase of samples were determined with XRD, TEM and EDS. The catalytic actiyity of sample on the thermal decomposition of RDX was investigated by DSC. The results show that nanocomposite PbSnO3 with the diameter of 9 nm can be obtained by calcining at 600 ℃ for 2 h, which crystal is cubic (pyrochlore type). The catalytic actiyity of nanocomposite PbSnO3 on the thermal decomposition of RDX is much higher than that of normal PbSnO3. The nanocomposite PbSnO3 can decrease the peak temperature of thermal decomposition of RDX from 240.1 ℃ to 236.5 ℃, and the decomposition enthalpy ΔH of RDX increases 722 J·g-1 (about 70%).
