Highly Thermal Stable TATB‐based Aluminized Explosives Realizing Optimized Balance between Thermal Stability and Detonation Performance

Abstract

In this work, a series of TATB‐based aluminized explosives were formulated from 1, 3, 5‐triamino‐2, 4, 6‐trinitrobenzene (TATB), aluminum powders and polymeric binders. The thermal stability, heat of detonation, detonation velocity and pressure of the TATB based aluminized (TATB/Al) explosives were systematically investigated by cook‐off, constant temperature calorimeter, electrometric method and manganin piezo resistance gauge, respectively. The selected PBX‐3 (70 wt% TATB/25 wt% Al/5 wt% fluorine resin) achieved optimized balance between thermal stability and detonation performance, with the thermal runaway temperature around 583 K. The thermal ignition of TATB‐based aluminized explosive occurred at the edge of the cylinder according to the experimental and numerical simulations. Moreover, the critical thermal runaway temperature for PBX‐3 was calculated based on the Semenov's thermal explosion theory and the thermal decomposition kinetic parameters of the explosive, which was consistent with the experimental value.

Fluoropolymer/Glycidyl Azide Polymer (GAP) Block Copolyurethane as New Energetic Binders: Synthesis, Mechanical Properties, and Thermal Performance

“…In the past three decades, fluoropolymers have gained considerable attention in the energetic material community (such as aerial infrared decoys, igniters, tracking flares, reactive binder systems, and solid fuel rocket propellants) as high explosive binders, owing to their high densities, low coefficients of friction, long-term chemical stabilities, and good compatibility with the main ingredients (oxidizers, metal fuels, and plasticizer) [ 18 , 19 , 20 ]. Particularly, fluoropolymer possesses strong oxidation [ 21 , 22 , 23 ], for instance, the magnesium, Teflon, and Viton system (MTV) as one of the well-known compositions used in decoys and flares. The metal/fluoropolymer compositions have a special exothermic reaction heat of 9.4 kJ g −1 , which is higher than the control compositions based on 2,4,6-trinitrotoluene (TNT) (3.72 kJ g −1 ) and cyclotrimethylenetrinitramine (RDX) (6.569 kJ g −1 ) [ 24 ].…”

Thermally Stable and Low‐Sensitive Aluminized Explosives with Improved Detonation Performance

“…TATB (2,4,6-triamino-1,3,5-trinitrobenzene, C 6 H 6 N 6 O 6 ) is a reasonably powerful high explosive (HE) whose thermal and shock stability is considerably greater than that of any other known material of comparable energy [6]. TATB-based aluminized explosives have exhibited the highly thermal stability, and high detonation performance [7]. However, the TATB/Al/binder formulations reported in [7] don't meet the requirement for efficient damage.…”

“…TATB-based aluminized explosives have exhibited the highly thermal stability, and high detonation performance [7]. However, the TATB/Al/binder formulations reported in [7] don't meet the requirement for efficient damage. Research is ongoing in the search for more powerful aluminized explosives with good thermal, impact, and shock stability.…”

Studies on PBFMO-b-PNMMO alternative block thermoplastic elastomers as potential binders for solid propellants

“…[9][10][11] This is due to their high density, long-term chemical stability, low coefficients of friction, and compatibility with energetic materials, especially strong oxidative ability with metals. [12][13][14] For example, the magnesium, Teon, and Viton (MTV) system, which was wellknown in decoys and ares, has high specic infrared radiant intensity and especially large specic reaction energy of 9.4 kJ g À1 in comparison to TNT and RDX with the yields of just 3.72 kJ g À1 and 6.569 kJ g À1 , respectively. 15 Therefore, uoropolymers may serve as promising polymeric binders in metal-rich solid propellant formulations.…”