邻苯二甲酸Pb(Ⅱ)配合物纳米颗粒的合成及其燃烧催化性能研究

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%.

纳米邻苯二甲酸铅的制备及其对双基推进剂燃烧催化的研究

以邻苯二甲酸氢钾和乙酸铅为原料,采用超声液相分散沉淀法制备了纳米邻苯二甲酸铅粉体。研究了反应温度、反应物浓度以及分散剂用量对配合物粒径的影响。在反应物浓度为0.4mol·L-1、反应温度为10℃、分散剂用量为8%(v/v)时,制得平均粒径为43nm的纳米邻苯二甲酸铅。通过研究纳米邻苯二甲酸铅对双基推进剂燃烧的催化作用,发现纳米邻苯二甲酸铅在2～22MPa范围内能提高双基推进剂的燃速,且使双基推进剂在6～10MPa范围内出现较强的麦撒燃烧效应。与普通邻苯二甲酸铅催化剂相比,纳米邻苯二甲酸铅使双基推进剂燃速高于含普通邻苯二甲酸铅的双基推进剂的燃速,且在6～10MPa范围内压力指数更低。