Environmental Engineering Reference
In-Depth Information
Fig. 3.1 Lead cast expansion
value of hydrazine nitrate
-
hydrazine mixture [
1
]
450
400
350
300
w(N
2
H
4
)×100
80
60
40
20
0
20
40
w(N
2
H
4
NO
3
)×100
60
80
100
-78.3
-57.5
-31.9
-13.3
+8.4
Fig. 3.2 Explosion velocity
of hydrazine nitrate
9500
-
hydrazine mixture [
3
]
9000
8500
8000
w(N
2
H
4
)×100
50
40
30
20
10
0
w(N
2
H
4
NO
3
)×100
50
60
70
80
90
100
-45.8
-34.9
-24.2
-13.3
-2.4
+8.4
×100
1.21
1.27
1.33
1.40
1.50
1.63
ρ
0
/g.cm
-3
Figures
3.1
and
3.2
shows the relationship of oxygen balance with lead cast
expansion value and explosion velocity of the hydrazine nitrate
hydrazine liquid
explosive. It could be found that, when the oxygen balance of such explosive
mixture was
-
2.4 % (including 10 % of hydrazine), explosion velocity was the
maximum; while, when the oxygen balance was
−
−
31.9 % (including 40 % of
hydrazine), its power capability was the maximum.
The inconsistent relationship between oxygen balance of hydrazine nitrate
-
hydrazine liquid explosive and its explosion velocity strength was mainly due to
that these explosive systems did not contain carbon-elements, all explosion prod-
ucts were gases and the average molecular weight of products was very small.
Explosion velocity of explosive depends mainly on the explosion heat, but
explosion strength is proportional to the product of explosion heat and speci
c
volume; although the oxygen balance of the hydrazine nitrate
hydrazine liquid is
-
near to zero with the maximum explosion heat, its speci
c volume is not the biggest
under this condition, which leads this typical characteristics of noncarbon explo-
sives (high hydrogen-content explosives).
