Study On Preparation Of Small Size Spheric Propellants And Special Industrial Explosives From Obsolete Explosives And Propellants

This dissertation studies on reclaimable technologies of obsolete military explosives and propellants, focusing on preparation of small size spheric propellants from obsolete propellants (SF-3) and obsolete high energy explosives (RDX), and preparation of perfusion explosives and powdery explosives with low detonation velocity from obsolete single base propellants.In order to meet the different demands of the civilian and military use, it may be necessary to add various amounts of additional energetic material (RDX) into small size spheric propellants after dissolving obsolete propellants (SF-3) in an appropriate solvent. The pilotscale experiments have been successfully carried out in the factory.The combustion mechanism of spheric propellants obtained is discussed reasonably. To improve the combustion stability of small size spheric propellants, carbon black is introduced to polish the propellants instead of traditional graphite, and the combustion principle and properties of the polished propellants are discussed as well. The ballistic performance of powder actuated tool bullets, in which charged with 2 kinds of prepared propellants is tested, and the results show that the propellants obtained can fit the charge requirement of both mid-high and low energy actuated tool applications.By adding oxidants and glue solutions into the obsolete single base propellants, the reliable and low-cost perfusion explosives are prepared. The soft perfusion explosives and the rigid perfusion explosives are prepared by utilizing PAM gel and a new low-cost glue respectively, having the excellent properties of high density(1.51~ 1.61g/cm3), waterproofness, high detonation speeds and etc.By means of special techniques, the powdery explosives with low detonation speed are prepared from waste single base propellants. Their detonation and hypocenter mechanism are studied in this thesis. Theoretical calculating methods for theexplosives are put forward, and their application to rock oil prospecting is tested and analyzed in this paper as well. The results show that the low detonation velocity hypocenter explosive can greatly improve the resolution of the earth-shock prospecting.