Thermal behaviors of petn base polymer bonded explosives

The effect of polymer matrices on the thermal hazard properties of RDX-based PBXs by using model-free and combined kinetic analysis

“…It has been found that the peak temperatures for the C4, Formex and Semtex mixtures prepared are lower than those of the pure RDX due to the presence of the polar plasticizer dioctyl sebacate (DOS) and dioctyl phthalate (DOP) in the binders. They may act as solvents for RDX during heating, leading to a lower decomposition temperature and smaller critical radius [44]. It was also found [10, 12] that the peak temperatures for all the prepared mixtures bonded by Viton A and Fluorel are slightly higher than those of pure explosives, which showed they could enhance the thermal stability of the RDX, resulting in greater critical radius.…”

“…The corresponding charge performance and sensitivity parameters of RDX and its PBXs are summarized in Table 3. [43][44][45]. D, Charge density, in g.m -3 ; Me, Molecular weight, g.mol -1 ; Im, Impact energy, in J; Hd, Heat of decomposition, J.g -1 ; Tb, Critical temperature for thermal explosion, in Celsius.…”

New directions in the science and technology of advanced sheet explosive formulations and the key energetic materials used in the processing of sheet explosives: Emerging trends

“…A wide range of sheet explosive compositions based on a combination of RDX (Type B), HMX (grade II), citroflex A4 and dynamite grade nitrocellulose with additives like diphenyl amine (DPA) and pigments is reported in literature. The thermal behaviour of PETN based detasheet also reported by Jaw et al [47] Walley [48] developed a sheet explosive comprising of alternating layer of an explosive and a metal/plastic foil of a different thickness and density with a space forming material such as metal or plastic foam. It is found effective for initiating entire surface area of a geometrically shaped charge leading to formation of a focussed detonation wave about a geometric centre.…”

Thermal decomposition and shelf-life of PETN and PBX based on PETN using thermal methods

“…However, PETN is highly sensitive to mechanical pulses such as impact and friction, and resistant to compression. To overcome these problems, one of the methods is mixing PETN with some selected polymeric binders, commonly referred to as polymer-bonded explosive (PBX) [1,3,4]. The polymeric binder coating, that binds the explosive granules, can absorb impact impulse, reducing the sensitivity of explosives to mechanical shocks.…”