A Theoretical Study for the Formulation Design of PBX(I)

Shim, Jung-Seob; Kim, Hyoun-Soo

Journal of the Korea Institute of Military Science and Technology 2008;11(2):109-115.

Jung-Seob Shim, Hyoun-Soo Kim

복합화약 조성설계에서의 이론적 연구(I)

심정섭, 김현수

국방과학연구소

Abstract

A Plastic Bonded Explosive(PBX) is mainly composed of nitramine explosive and polymer binder. The great number of serious applications of PBX requires the good adhesion between nitramine crystals and binder, which depends on the surface characteristics of a filler and binder. In the pursuit of the better design to achieve the enhanced adhesion, profound knowledge of the surface and interfacial characteristics of explosive and binder should be exploited. In this study, the influences of physicochemical properties between RDX and binders such as interfacial tension($gamma_{SL}$), latent heat($Q_m$), and density($ ho$) on impact sensitivity of PBX were investigated. As experimental results, the major contribution factor to impact sensitivity of PBX was the interfacial tension, compare with other surface properties. The correlation coefficient of $H_{50}$ versus $gamma_{SL}$ is 0.9932 when a polynomial regression method was used.

Key Words: PBX, Binder, Interfacial Tension, Impact Sensitivity, Desensitizer