PROCESSES OF MECHANICAL AND DIELECTRICAL RELAXATION IN BLACK-FILLED LIQUID-CRYSTALLINE COPOLYESTER

Viscoelastic, dielectrical and electroconducting properties of LC copolyester of PETP and p-hydroxybenzoic acid In the presence of the carbon black PM-100 filler have been studied. Features of mechanical relaxation in solid state of the composition are results of the filler effect on the molecular mobility in the region of the main relaxational process and on the structure of supermolecular formations of the polymer. The filler practically doesn't affect the spectrum of mechanical relaxation times and decreases times of dielectrical relaxation. Structure formation processes of the filler don't affect directly the viscoelastic properties of compositions, but are essential for their electrical conductivity and electrical capacity.