Funct. Mater. 2021; 28 1: 84-89.
Investigation of epoxycomposites linking kinetics during ultrasonic treatment
Ternopil Ivan Puluj National Technical University, 56 Ruska Str., 46001 Ternopil, Ukraine
Relaxation processes depending on the time of hardening of initial and ultrasonically modified epoxy composites at different stages of formation of composite materials containing hybrid (fibrous and disperse) fillers of various nature are investigated. The activation of side groups and segments of epoxy binder macromolecules has been proved. The mobility of the matrix units also increases. These factors enhance the interaction at the phase separation interface in the system filler - epoxy matrix during the formation of surface layers. The degree of matrix cross-linking is determined by the displacement of the tan(dmax) peak of the relaxation process of the segments towards smaller values of time. It proves the intensification of the cross-linking process during the composite formation.
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