This is confirmed by the fact that the experimental (hydrostatic) density of OP
containing 70 mass.% of fiber is less than calculated (see Fig. 6) This is explained by
the decrease of the packing density of macromolecules at the dividing boundary
polymer-fiber [10].
CONCLUSION
1. The process of reinforcement of thermosetting phenol-formaldehyde matrix by
parao-aramide (Rusar-С brand) and polysulfonamide (Tanlon brand) discrete fiber
with chaotic reinforcement scheme was studied.
2. The process of thermal decomposition of organoplastics based on phenol-
formaldehyde binder was studied. Mechanism and kinetic parameters of the process of
thermal destruction were determined using Coats-Redfern method.
3. It was established that organoplastic containing 70 mass.% of Thanlon fiber has
the highest
heat resistance among examined materials, but it is inferior to OP containing
60 mass.% of fiber Rusar 1,3 times in strength properties.
4. The research of friction and wear showed that organoplastic containing
60 mass.% of Tanlon fiber, which surpasses the analogue reinforced by Rusar fiber in
durability and in friction 1,5 and 2 times respectively, has the best complex of
tribological characteristics.
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