Mathematical model of the process
R
S
.
10
-1
E
act.
, kJ/
mol
lg Z
kt = µ (1)
0.943
0.396
53.48
0.152
kt =2µ
1/2
(2)
0.917
0.396
21.648
-1.697
kt = 2[ 1 - (1 -µ)
1/2
] (3)
0.928
0.461
82.85
2.33
kt = 3 [1 - ( 1 - µ)
1/3
] (4)
0.922
0.485
95.03
3.229
kt = -ln ( 1 - µ) (5)
0.910
0.538
123.29
5.309
kt = 2[- ln(1 - µ)]
½
(6)
0.895
2.12
56.55
0.88
kt = 3 [ -ln(1- µ)]
1/3
(7)
0.878
2.87
34.299
-0.52
kt = 4[ -ln (1- µ)]
¼
(8)
0.855
3.16
23.186
-1.18
kt = 1/2 µ
2
(9)
0.952
0.396
117.158
4.151
kt=(1- µ)ln(1-µ) + µ (10)
0.944
1.05
150.639
6.64
kt = 3/2[1 - (1- µ
1/3
)
2
(11)
0.929
3.48
200.255
9.83
kt= [(1- µ)-(1-µ)
2/3
(12)
0.939
2.68
166.715
7.359
LBS-1 + 70 mass.% of Rusar-С, l=1
kt = µ (1)
0.985
0.65
82.855
1.943
kt =2µ
1/2
(2)
0.980
0.649
36.279
-0.805
kt = 2[ 1 - (1 -µ)
1/2
] (3)
0.996
0.264
111.301
3.99
kt = 3 [1 - ( 1 - µ)
1/3
] (4)
0.996
0.228
123.339
4.86
kt = -ln ( 1 - µ) (5)
0.989
0.271
152.009
6.92
kt = 2[- ln(1 - µ)]
½
(6)
0.987
2.369
70.857
1.86
kt = 3 [ -ln(1- µ)]
1/3
(7)
0.985
3.45
43.812
0.014
kt = 4[ -ln (1- µ)]
¼
(8)
0.980
3.9
30.283
-0.784
kt = 1/2 µ
2
(9)
0.986
0.655
176.002
7.74
kt=(1- µ)ln(1-µ) + µ (10)
0.993
1.28
208.227
10.079
kt = 3/2[1 - (1- µ
1/3
)
2
(11)
0.996
3.09
256.967
13.107
kt= [(1- µ)-(1-µ)
2/3
(12)
0.995
2.80
223.803
10.723
Source: developed by the author
Analyzing the data (tab. 8), it can be concluded that high values of the correlation
coefficient are obtained by kinetic equations (2, 8–12). That’s why the minimum value
of S was used as the main criterion of choosing the optimal mathematical model of the
process. Thus, it was found that the equations (2, 9) describe the process of thermal
destruction the most adequately. The mathematical model (2) characterizes the process
of random nucleation: organoplastic undergoes molecular transformations and, as a
result, radicals that have a relatively low reactivity are formed from the valence-
saturated molecules. The mathematical model (9) characterizes the process of linear
diffusion: the particles diffuse to the ash layer which accumulates in the process of
combustion of organoplastic. Obviously, this is the slowest process, because it requires
a lot of activation energy [6].
Thermophysical properties of organoplastics reinforced by Rusar-C fiber.
The research on the thermophysical properties of OP was carried out on the samples
with the 60 mass.% degree of filling and with the length of Rusar-C fiber of 5, 10,
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