Low Vulnerable Sheet Explosive Based on 3-Nitro-1,2,4-triazol-5-one

Abstract

Nitrotriazolone incorporated sheet explosives were prepared and evaluated with respect to their explosive characteristics as well as mechanical and thermal behavior. 1,3,5-Trinitro-1,3,5-triaza-cyclohexane (RDX)/Estane (85:15) composition (density, 1:23 g=cm 3 and tensile strength, 0.5 MPa) was taken as reference and the effect of replacement of RDX by nitrotriazolone to the extent of 5-25% was studied. Inclusion of nitrotriazolone led to a remarkable increase in density (1:23 ! 1:41 g=cm 3 ) and mechanical properties (tensile strength: 0:46 ! 1:08 MPa). The major finding was increase in velocity of detonation by about an average 700 m=s over the reference composition. Velocity of detonation realized ranged from 6800 to 6900 m=s for RDX/nitrotriazolone/ Estane compositions. As regards sensitivity, nitrotriazolone-based compositions were relatively less vulnerable to impact and friction stimuli. Shock sensitivity of RDX/nitrotriazolone/Estane composition was also found to be of the order of 98-110 kbar as against 77 kbar for reference. The armor protection capability of nitrotriazolone-based composition against shaped charge was found to be at par with the corresponding RDX-based sheet explosive. Thermal studies revealed that nitrotriazolone and RDX incorporated sheet explosives with Estane binder decomposed as a unified composite, despite their widely differing decomposition/ignition temperatures.

Experimental Studies on a High Energy Sheet Explosive Based on RDX and Bis(2,2-dinitropropyl) Formal/Acetal (BDNPF/A)

“…A cylindrical pressed RDX:Wax (95:5) donor charge of diameter 30 mm and height 100 mm, having a density of 1640 kg/m 3 and VOD of 8100 m/s, was used to generate the shock wave. The wave was allowed to pass through an aluminium block of diameter 63 mm of density 2700 kg/m 3 , with the height being varied from 31 mm to 60 mm.…”

“…Nath et al [2] and Mukundan et al [3] have reported RDX as a major energetic ingredient in sheet explosive formulations with ethylene vinyl acetate (EVA) and Estane binder systems. These formulations were prepared by a rolling process.…”

“…PBXs in the form of flexible sheet explosives prepared by a calendering process can be formulated with both classes of polymers, viz., polybutadienes and thermoplastic elastomers (TPEs). These flexible composite materials are known as sheet explosives [2][3][4]. A sheet explosive can be prepared by a rolling or extrusion process.…”

Experimental Studies on Advanced Sheet Explosive Formulations Based on 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) and Hydroxyl Terminated Polybutadiene (HTPB), and Comparison with a RDX-based System

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Abstract:The present investigation reports the use of 2, 4,6,8,10,4,6,8,10, in sheet explosive formulations. In this study, hydroxyl terminated polybutadiene (HTPB) based sheet explosives were prepared incorporating the powerful explosive CL-20 as a partial replacement for hexahydro-1,3,5-trinitro-1,3,5-triazine(RDX).

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Studies on Sheet Explosive Formulation Based on Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine and Hydroxyl Terminated Polybutadiene

“…RDX-based sheet explosive formulations with various binders like natural rubber and thermoplastic elastomers (TPEs) such as copolymers of ethylene and vinyl acetate [ethylene vinyl acetate (EVA) copolymers] and Estane have been studied [5][6] . These formulations were prepared by rolling process.…”