Experimental study of the mechanism of initiation of detonation in low-density explosives
The authors examine the effect of particle size, density and dynamic loading conditions on the detonation kinetics of an explosive comprised of hexogen and a urea-formaldehyde resin. They find that the propagation of detonation in low-density explosives with significantly varying particle sizes can be represented as follows. The process is excited by reaction products and takes place mainly in the form of combustion of particles from the surface. Since a fine fraction burns considerably faster than a coarse fraction, the maximum values of the detonation wave velocity and mass velocity are more heavily influenced by the content of fine particles in the mixture. In this case, the parameters in the rarefaction wave increase due to complete combustion of the coarser fraction, which in turn results in a less rapid drop in the profile of mass velocity in multi-fraction compositions.
- OSTI ID:
- 6134707
- Journal Information:
- Combust., Explos. Shock Waves (Engl. Transl.); (United States), Vol. 22:4; Other Information: Translated from Fiz. Goreniya Vzryva; 22: No.4, 88-92(Jul-Aug 1986)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHEMICAL EXPLOSIVES
COMBUSTION KINETICS
DENSITY
DETONATIONS
PARTICLE SIZE
CHEMICAL EXPLOSIONS
COMBUSTION PRODUCTS
DETONATION LIMITS
DETONATION WAVES
DYNAMIC LOADS
IGNITION
POROSITY
RESINS
SURFACE AREA
UREA-FORMALDEHYDE FOAMS
VELOCITY
WAVE PROPAGATION
CHEMICAL REACTION KINETICS
COLLOIDS
DISPERSIONS
EXPLOSIONS
EXPLOSIVES
FOAMS
KINETICS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
POLYMERS
REACTION KINETICS
SHOCK WAVES
SIZE
SURFACE PROPERTIES
400800* - Combustion
Pyrolysis
& High-Temperature Chemistry