Preparation And Application Research Of New Burning Rate Catalyst

Through the condensation reaction of ferrocene with propane , the Vilsmeier formylation reaction of 2,2-bisferrocenyl-propane with aceton and the reduction reaction of formyl-2,2-bisferrocenyl-propane , hydroxymethyl-bisferroceny -propanes(HBP) , 2,2-bisferrocenyl-propane, formy1-2,2-bisferrocenyl-propane and HBP were synthesiezed and purified by chromatography. The structures of compounds were characterized by IR and ¹HNMR spectra. It was found the optimal reaction conditions were that the mol ration of reagents is n (FcC(CH₃)₂Fc) : n (HCON(CH₃)₂) : n(POCl₃)=1: 5: 7, the reaction temperature is about 50℃, the reaction time is 7hrs, and the yield is 87%. The aldehydo-derivatives were reduced to the corresponding hydroxymethy-bisferrocenyl- propanes with KBH4/CH3CH2OH in 90% yield, and the pH of reaction systems is 10-11.In this paper, nano Co₃O₄,Fe₂O₃ were also preparation by room-temperature solid state reaction method, and the nano particals were analyzed by SEM ,TEM, XRD,TG and the granularity of these nano compounds were analysed The results of experiments show that the shape of CO3O4 was like a ball, and the Fe₂O₃ resemble a ball, and their average granularity is about 70nm.In this thysis, HBP, nano CO₃O₄, CuO, Fe₂O₃ were used as the burning rate catalysts of boron (aggregated)-based solid propellant and MA-based solid propellant .Compared with the burning rate catalyst Catocene, the burning rate is improved greatly by use of HBP, nano C₃O₄ Fe₂O₃ except CuO, and HBP reducing the transfer property and volatilization property of catalysts compared with TBF. From TG pictures it is known that the HTPB s decomposation temperature was reduced if adding Co₃O₄, Fe₂O₃, but the temperature is nearly fixed if adding CuO.