[PDF]    https://doi.org/10.3952/physics.2025.65.3.4

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 65, 154–161 (2025)


MODULATION OF VISCOELASTICITY AS A RESULT OF INFORMATION READING BY ULTRASONIC FIELD OF POLYVINYL CHLORIDE–METAL-NANODISPERSED FILLER SYSTEM
Borys B. Kolupayeva, Borys S. Kolupayevb, Vasyl V. Levchukb, Ihor S. Voitovychb, and P.M. Omelyanetsb
aInstitute of Cybernetics, Academician Stepan Demianchuk International University of Economics and Humanities, 4 Stepan Demianchuk Street, 33028 Rivne, Ukraine
bRivne State University of the Humanities, 12 Stepana Bandera Street, 33028 Rivne, Ukraine
Email: vasyl.levchuk@rshu.edu.ua

Received 29 September 2025; accepted 22 October 2025

The results of studying the viscoelastic properties and mechanical relaxation processes of systems based on polyvinyl chloride (PVC) containing 0–3.00 vol. % of nanodispersed copper powder obtained by the physicochemical meth­od (ph/ch) and the method of electric conductor explosion (ECE) were presented. The viscoelasticity modulation was carried out at a frequency of 0.4 MHz in the temperature range 298 K ≤ T ≤ Ts. Based on the phenomenological Maxwell–Frenkel approach, the processes of compression–tension, shear, and bulk deformation of the composite were investigated. It has been shown that the viscoelastic properties of the system are due to the structural changes, energy and entropic influence of the boundary layer (BL). The maximum changes in the value of the viscoelastic characteristics of the PVC system occur in the range of changes in the Cu content of 0.05–1.50 vol. %, which expands the scope of the material in thermal and dynamic (mechanical) fields.
Keywords: viscoelasticity, structural element, information, relaxation, modulation

POLIVINILCHLORIDO IR JO NANODISPERSGUOTO METALINIO UŽPILDO SISTEMOS KLAMPIOJO TAMPRUMO MODULIAVIMAS KAIP INFORMACIJOS NUSKAITYMO ULTRAGARSINIU LAUKU REZULTATAS
Borys B. Kolupayeva, Borys S. Kolupayevb, Vasyl V. Levchukb, Ihor S. Voitovychb, P.M. Omelyanetsb

aTarptautinis akademiko Stepano Demiančiuko ekonomikos ir humanitarinių mokslų universitetas, Rivnė, Ukraina
bValstybinis Rivnės humanitarinių mokslų universitetas, Rivnė, Ukraina


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