Preparation,Characterization and Combustion Catalytic Activity of Nanopartical Super Thermites

Abstract

Super thermites Al/PbO,Al/CuO and Al/Bi2O3 were prepared by ultrasonic dispersion process using nano-Al,nano-PbO,nano-CuO and nano-Bi2O3 as the raw materials,and the products were characterized by XRD,SEM-EDS and IR.DSC thermal analysis method was employed to evaluate compatibility of three kinds of super thermites with some double-base propellant main components.On the bases of characterizations,the effects of three super thermites on the combustion properties of double-base(DB) propellant were investigated.The results indicate that Al/PbO,Al/CuO and Al/Bi2O3 have good compatibility with nitrocellulose(NC),nitrocellulose/nitroglycerine(NC/NG) and N-nitro dihydroxy ethylamine dinitrate(DINA),but they are slightly sensitive with cyclotrimethylene trinitramine(RDX) and 1,3-dimethyl-1,3-diphenylurea(C2).DB propellant containing three kinds of nano super thermites showed excellent performance of combustion,which indicates that super thermites have tremendous potential superiorities in application of DB propellant.