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PBX 9404
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PYROLYSlS
6. DETONATION PROPERTIES
6.1 Detonation Velocity.B
1 t I I I /
loo 200 WC
i IEMPER4T”RE (“C)
Fig. 2. PBX 9404 DTA and pyrolysis test resuks.
Effect of Charge Radius
Charge radius affects the detonation velocity of unconfined PBX-9404 charges
pressed to a density of 1.846 g/cm3 as follows.
90
D(R) = 8.776[(1 - 0.89 X 1O-2/R) - 4.9 X lo-YR(R - 0.533)] ,
where D = detonation velocity in millimeters per microsecond
and R = charge radius in millimeters.
The experimentally determined failure diameter is 1.18 mm.
6.2 Detonation Pressure.
Density
k/cm’)
Detonation Detonation
Velocity Pressure
(mm/w) Wa)
1.844 8.802” 36.8
BNote that this value is greater than the infinite-diameter
velocity reported in Section 6.1.