The shock sensitivities of nitromethane/methanol mixtures

18th APS-SCCM; 24th AIRAPT

Dattelbaum, D.M.^1 ; Sheffield, S.A.^1 ; Bartram, B.D.^1 ; Gibson, L.L.^1 ; Bowden, P.R.^1 ; Schilling, B.F.^1

Shock and Detonation Physics, Los Alamos National Laboratory, Los Alamos

NM

87545, United States^1

关键词: Critical diameter;    Detonation performance;    Gas gun;    Hugoniot;    Nitromethane;    Plate impact;    Pop plot;    Shock sensitivity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/18/182009/pdf
DOI  :  10.1088/1742-6596/500/18/182009

来源: IOP

【 摘 要 】

Dilution of liquid explosives with «inert» solvents have been shown previously to affect a degradation in the detonation performance properties of the explosive, and result in a rapid increase in the critical diameter with increasing diluent. To date, the shock sensitivities of liquid explosive-diluent mixtures have not been measured. In this work, we describe the results of a series of gas gun-driven plate impact experiments on nitromethane (NM)-methanol (MeOH) solutions of several concentrations, using in situ electromagnetic gauging to measure the initial shock state (Hugoniot) of the mixture, as well as the overtake-time-to-detonation (Pop-plot). Surprisingly, the shock sensitivities did not fall off dramatically with increasing MeOH concentration. In fact, at some concentrations MeOH appears to sensitize NM, relative to neat NM.