An investigation was made of the effect of low-viscosity epoxy oligomer DER-330, active diluent DEG-1, and temperature on the rheokinetic properties of chlorine-containing epoxy oligomer of grade EKhD cured with liquid curing agent isomethyltetrahydrophthalic anhydride. It was established that, by introducing modifiers and changing the temperature, the gelation time of the epoxy binder can be varied in a wide range, from 22 min to 28 h.
An examination has been made of questions of the compaction and structure formation under forming pressure of reinforcing organic and traditional (carbon, glass) fibrous fillers. The laws governing the compaction of the different reinforcing fibres under pressure were established, the possibilities of purposeful change in the structure of the reinforced polymeric materials during forming under pressure were shown, and the conditions of production of solid polymer composites of reinforced structure with fibrous fillers were also established.
The influence of an epoxy binder of complex composition and its individual components on the sorption and physicomechanical characteristics of domestic aramid fibers is considered. The data on diffusion mass transfer of epoxy binder and its individual components into aramid fiber of various grades are obtained. It has been established that the components of the binder, after penetrating into aramid fibers, can change their macrostructure, however, this practically does not lead to a decrease in their strength.
The effect of an EA-grade low-viscosity thinner and of temperature on the rheokinetic properties of an epoxy oligomer of grade UP-610 cured with a Benzam-ABA amine curing agent was investigated. It was established that, when thinner is introduced and the temperature is varied, the lifetime of EFA-B epoxy binder can vary from 25 min to 26 h.
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