Investigation on Neutral Polymeric Bonding Agents in Solid Propellant Composites and Plastic Bonded Explosives

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Abstract

Bonding agent is one of the important additives in composite solid propellants (CSPs) and plastic bonded explosives (PBXs) that plays critical role in improving the mechanical properties. Bonding agents are usually organic small molecules which are added to CSPs and PBXs formulations with neutral polymeric binders at low contents. Nevertheless, for CSPs and PBXs formulations with energetic polymeric binders, conventional small molecule bonding agents isn't usefull. Neutral polymeric bonding agents (NPBAs) are a novel family of bonding agents, which are vital in formulations containing polar fillers dispersed in polar binders. In this study, by necessity synthesis, the molecular design, and probable mechanisms of interactions and most important reported results of NPBAs are presented. The studies showed that the use of NPBAs in CSPs and PBXs formulations, with much smaller amount than that of monomeric bonding agents in conventional formulations, has significant effect on improving the mechanical properties. The effectiveness of NPBAs in modifying the mechanical properties of composite solid propellants was comparable or even better than the effect of solid particles pre-coating.

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References

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