The results of the research of the specific heat capacity (Fig. 5) and thermal
conductivity (tab. 10) of organoplastics with the fiber content of 50, 60, 70 mass.%
made it possible to confirm that their thermophysical properties are characterized by
rather high values of specific heat capacity in the range of operating temperatures (298-
498 K).
Figure 5 Temperature dependence of the specific heat of organoplastics based
on PFR containing 50 (1), 60 (2) and 70 (3) mass % of Rusar-С (fiber length 10 mm)
Source: developed by the author
Table 10 The impact (effect) of the content of Rusar-С fiber (fiber length is
10 mm) on the coefficients of thermal conductivity and thermal diffusivity of
organoplastics based on PFR
Indicator
Content of Rusar-С, mass %
50
60
70
The coefficient of thermal conductivity, W/(m K)
0,172
0,155
0,147
The coefficient of thermal diffusivity, m
2
/s
0,097
0,080
0,13
Source: developed by the author
Physicomechanical properties of organoplastics. In the chaotic scheme of
discrete-fiber reinforcement, the strength properties of PCM depend on the nature,
shape and length of the reinforcing element, the degree of filling. The highest strength
properties are provided with the degree of filling of 50-70 mass.% [7].
The results of the research of impact of the filling degree of OP are shown in
tab. 11.
High strength characteristics of OP are explained by high adhesive strength of
components of the compositions. Due to the amorphous surface fibers are well
impregnated with low-viscosity oligomeric binder solutions. That leads to the
streamline of fiber structure and more uniform distribution of stresses between the
elements of ego molecular structure. It contributes to the increase of strength of
dividing boundary and material resistance, compressive and shear loads.
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