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January 2023
Book Article
Title
Dynamic Mechanical Properties of HTPB - IPDI Binders of Four PBX with Different HMX Contents and Energetic Particles Augmented Binder
Abstract
Energetically augmented or, in other words, energetic particle enhanced inert binder using hydroxyl-terminated polybutadiene (HTPB) prepolymer has attained
some scientific notice in recent years [2-8]. The particles incorporated into the binder are much smaller than the fine part in the usual bimodal particle filling.
Such particle-enhanced binders have got the nickname “dirty” binders, meaning the binder is “spoiled” by another substance. Igor Plaksin [2-7] was probably the
first person to use this term in the sense of spoiled or enriched binder. Before him, people from Los Alamos National Laboratory (LANL) used this term, however, with
some other meaning. In 2001, Eric Mas and Brad Clements published a paper using the term “dirty” binder as a theoretical construct to model the mechanical response
of PBX 9501 [8]. Here, the meaning now used is the really energetically enriched binder, which reflects the specific experimental fact. The conceptual aspects of such
particle-enhanced inert binders are the following: (i) one gets a somewhat higher explosive filler loading, therewith, the density is somewhat higher and a slightly
higher detonation velocity can be expected; (ii) the system is more uniform in density and the formation of the detonation front should be improved; (iii) because
fine and very fine particles have less to nearly no crystalline defects and pores compared to the bigger particles, one might expect a lower sensitivity to shock wave
initiation [9]. In recent work, some of these assumed and proposed effects havebeen verified [6, 7].
some scientific notice in recent years [2-8]. The particles incorporated into the binder are much smaller than the fine part in the usual bimodal particle filling.
Such particle-enhanced binders have got the nickname “dirty” binders, meaning the binder is “spoiled” by another substance. Igor Plaksin [2-7] was probably the
first person to use this term in the sense of spoiled or enriched binder. Before him, people from Los Alamos National Laboratory (LANL) used this term, however, with
some other meaning. In 2001, Eric Mas and Brad Clements published a paper using the term “dirty” binder as a theoretical construct to model the mechanical response
of PBX 9501 [8]. Here, the meaning now used is the really energetically enriched binder, which reflects the specific experimental fact. The conceptual aspects of such
particle-enhanced inert binders are the following: (i) one gets a somewhat higher explosive filler loading, therewith, the density is somewhat higher and a slightly
higher detonation velocity can be expected; (ii) the system is more uniform in density and the formation of the detonation front should be improved; (iii) because
fine and very fine particles have less to nearly no crystalline defects and pores compared to the bigger particles, one might expect a lower sensitivity to shock wave
initiation [9]. In recent work, some of these assumed and proposed effects havebeen verified [6, 7].
