The isovolumetric burning performance of deep deterred oblate spherical powder(DDOSP) with large web is investigated by the closed bomb test.

In this thesis, based on analyzing the technique, home and abroad, of manufacturing propellant powder and deterring burning rate, the technique of manufacturing thick-web double-based oblate spherical propellant powder was presented, and various affecting factors on its shape and density were discussed, and the technique of improving its shape and density was brought forward.

In this thesis, based on analyzing the data, home and abroad, and manufacturing thick-web single-based oblate spherical propellant powder at NUST , the technique of manufacturing thick-web double-based oblate spherical propellant powder was presented, and various affecting factors on its shape and density were discussed, and the technique of improving shape and density was brought forward.

A new type of radial variable density oblate spherical propellant powder (VDSP) with porous structure inside and high-density outside in same materials was designed to be used in small-caliber guns on the basis of analyzing how to implement burning progression.

Study of adsorption and controlled release performance of actives-carrying porous microspheres

ZnO porous microspheres, hexagonal prisms, apertured architectures, and nanospheres have been synthesized via simple and facile methods.

The surface and the aperture of porous microspheres were studied by SEM.

Amphiphilic copolymer, monomethoxy-poly(ethylene glycol)-b-poly-dl-lactide (PELA), was used to prepare macroporous microspheres without adding any emulsifier or porogen, and the necessary preparation conditions for formation of macroporous microspheres and their effects on pore diameter were studied.