Environmental Engineering Reference
In-Depth Information
Table 3.2 The relationship between oxygen balance and explosive properties of HNO 3 - C 6 H 5 CH 3
explosive [ 1 ]
Number
h Le a
ω i ×
100
O.B ×
100
Explosion funnel
volume (the relative value)
HNO 3
(conc. 90 %)
C 6 H 5 CH 3
1
86
14
5.3
20.34
1.86
2
85
15
1.6
21.32
2.12
3
84
16
2.2
21.93
2.13
4
83
17
6.1
20.19
1.35
a The compressed height of lead column
property and might even had detonation dif
culty when the oxygen balance was
away from zero.
Fedorov et al. [ 6 ] had studied explosive properties of tetranitromethane and
nitrobenzene explosive mixture with different proportions in detail. The experiment
results were listed in Table 3.3 .
Because the lead column in Table 3.3 was not be calibrated, some of the test data
might be too large, but they still could be compared relatively. When the liquid
explosive had 22.5 % of nitrobenzene, explosion velocity and strength were the
most powerful; when nitrobenzene was 20
25 % (oxygen balance was 6.68 to
-
3.9 %), its explosion velocity and strength were located within the high value area.
Table 3.3 Explosion property of C(NO 2 ) 4 -nitrobenzene explosive mixture
Content of
nitrobenzene × 100
h c a, b
(mm)
O.
B × 100
v D
(m s 1 )
(g cm 3 )
Q e (calcu-
lated)
(kJ kg 1 )
V L
(ml)
50 % Explo-
sion energy/
E50
(N m cm 2 )
0
49.0
6,400
1.64
1,892
3.47
50
/
5
38.4
6,850
1.61
2,708
4.32
400
48
10
27.8
7,100
1.58
3,687
4.5
535
43
15
17.3
7,400
1.555
4,431
5.25
655
43
20
6.7
7,570
1.537
5,024
5.43
830
36.5
22.5
1.4
7,760
1.515
5,275
5.45
874
51.5
25
3.9
7,670
1.50
5,831
5.6
850
80.6
30
14.5
7,500
1.48
5,777
5.25
700
80.6
35
25.1
7,250
1.457
5,251
5.2
525
150
40
35.6
7,050
1.433
4,619
4.92
540
150
50
56.8
6,650
1.37
3,386
4.4
480
/
60
78.0
6,250
1.35
3,127
3.7
462
/
70
99.1
5,800
1.30
3,235
3.24
317
/
Nitroglycerine
7,450
47.5
TNT
7,200
4.2
111
a The compressed value of copper column
b Size of copper column as φ 7 × 10.5 mm
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