Nano Composite Copper Oxide Tin And Lead Acid As Catalyst Combustion The Synthesis And Properties Of Research

The technology of propellants and explosives is one of the key national defence technologies that are largly develop in many countries. The combustion property of propellants and explosives is the most important technology of propellants and explosives. Using less combustion catalyst is the best method that is used to adjust the combustion property of propellants and explosives, especially solid propellants. In this Ph. D. dissertation, a series of nanometer combustion catalysts with different sorts and microstructures were prepared, and the catalysis of these nanometer materials on the energetic material was investigated. This paper first with the preparation of nanometer PbO-CuO, explore the best calcining temperature, get the best preparation process conditions. Then the particles were smaller, good dispersion SnO2-CuO. A combustion catalyst,2,4-dihyoxybenzoic acid-Cu, was synthesized by precipitation method from CuSO4·5H2O and2,4-dihyoxybenzoic acid. Explore detergent to the influence of different polarity product. A combustion catalyst,2,4-dihyoxybenzoic acid-Cu-Pb-CNTs, was synthesized by precipitation method from Cu (NO3)2,Pb (NO3)2, CNTs and2,4-dihyoxybenzoic acid. To study the reaction mechanism. The samples of PbSnO3were prepared by sol-wet-chemical method using Pb(NO3)2and SnCl4·SH2O as raw materials. Establish the optimum conditions. Take lead and tin salt, Lead and tin mole ratio of1to1than.Soluble in dilute the30times the nitric acid.80degrees Celsius conditions adding sodium hydroxide.The end for8to9pH.The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), transform infrared (IR), thermal gravity and differential thermal analysis (TG-DTA).The catalytic effects of these metal and composite metal nanopowders on the thermal decomposition of AP and AP/HTPB composite solid propellant were studied by thermal analysis(DTA).Mainly uses the thermal gravity and differential thermal analysis (TG-DTA) research the PbO-CuO, SnO2-CuO,2,4-dihyoxybenzoic acid-Cu,2,4-dihyoxybenzoic acid-Cu-Pb-CNTs and PbSnO3to the RDX thermal decomposition of catalytic performance.The results of the study show that, RDX respectively with the samples according to4:1after blending. Catalysts make RDX decomposition temperature reduced9.4℃,3.0℃,6.9℃,9.4℃,31.0℃. And make decomposition stepped up, show good catalytic activity.