Preparation And Catalytic Properties Of Metal Oxide Graphene Oxide Load

Diversified composite combustion catalyst in the application of solid propellant has achieved rapid development, because of the catalytic performance of various components, which composed of recombination catalyst can be "complementary", such as "lead-carbon" binary recombination combustion catalyst and "lead-copper-carbon" ternary one gain the widespread application. Graphene Oxide (GO) as a new carbon material can be an excellent catalyst carrier. Mixing melt compound with GO can get a new high-effect recombination catalyst, Studying the GO and melt compound has important value.The preparation of5kinds of graphene oxide (GO) and metal oxide compounds serve recombination combustion catalyst:binary catalyst "lead oxide-GO"(GO-PbO)、"Copper oxide-GO"(GO-CuO)、"Bismuth oxide-GO"(GO-Bi2O3) and ternary catalyst "lead oxide-Copper oxide-GO"(GO-PbO-CuO) and "Bismuth oxide-Copper oxide-GO"(GO-Bi2O3-CuO). The five compounds were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and IR technology.10Samples of double-base and modified double-base propellant containing5kinds of the compounds were prepared with the pouring process, which of them were marked GO1201-GO1210.The DSC, TG/DTG methods were adopted to study the thermal behaviors of the10propellants. The Kissinger method, Ozawa method, the differential equation and integral equation derived from the non-isothermal DSC method were used to analyze main thermal decomposition process of them. By the theoretical calculation, the kinetic parameters, the thermal decomposition mechanism function in the exothermic processes were obtained. The enthalpy of activation (ΔH≠), entropy of activation (ΔS≠), Gibbs free energy of activation (ΔG≠) were also got.The specific heat capacity of the ten propellants were determined with continuous Cp mode of Micro-DSCⅢ micro-heat instrument. The self-accelerating decomposition temperature(TSADT), critical temperature of thermal explosion(Tb), thermal ignition temperature (TTIT) and adiabatic time-to-explosion (tTlad) were estimated using Cp functions and thermal decomposition parameters, which can be used to estimate thermal safety directly.