Studies on Effect of Nitrogen Rich Explosives on the Morphology, Thermal and Combustion Behaviour of B/KNO₃ Composition

Abstract

The study elucidates the influence of three nitrogen-rich explosives viz., FOX-7, FOX-12, and RS-RDX on the performance of B/KNO 3 /PEC igniter composition. The B/ KNO 3 pyrotechnic igniter compositions with 5, 10 & 15 parts of FOX-7, FOX-12, and RS-RDX were successfully prepared. The compositions were evaluated in terms of surface morphology, heat output, sensitivities, flame temperature, pressure output, ignition delay, time to reach P max (BTP max ), and thermal analysis. The closed vessel firing data indicated higher P max value and lower BTP max for FOX-12 and FOX-7 based composition. The addition of FOX-12 and FOX-7 also reduces the decomposition temperature of B/KNO 3 composition without affecting friction and spark sensitivities. The composition having 15 parts RSRDX is the most insensitive to impact among all. Therefore, the addition of insensitive high explosives like RS-RDX, FOX-7and FOX-12 is useful to improve the performance of the igniter composition to achieve low BTP max and increased pressure output. Optimum performance is exhibited by RS-RDX-based compositions.

Study on a Novel Synthetic Route and Properties of 1‐trinitromethyl‐3‐nitro‐1,2,4‐triazole (TNMNT)

“…where k b is Boltzmann's constant, 1.3806 × 10 À 23 J • K À 1 , and h is Planck's constant, 6.626 × 10 À 34 J • s. Mechanical sensitivity of explosives is a non-negligible aspect of the research field [18][19][20][21][22][23][24]. There are several main methods to test explosive sensitivity, such as Castor drop hammer and BAM Fall hammer to test the impact sensitivity of the characteristic drop height.…”

“…Mechanical sensitivity of explosives is a non‐negligible aspect of the research field [18–24]. There are several main methods to test explosive sensitivity, such as Castor drop hammer and BAM Fall hammer to test the impact sensitivity of the characteristic drop height.…”

Characterization of thermal decomposition mechanism and combustion performance of 4,4’‐azobis(1,2,4‐triazole)**

“…As a planar molecular crystal, ATRZ exhibits no crystal transformation behavior and has better safety. The energy release mode of ATRZ is the breaking of intramolecular CÀ N single bonds, NÀ N single bonds, and N=N double bonds, with a faster reaction rate and fast energy release rate [18][19][20]. This characteristic makes ATRZ have broader application prospects.…”