Original scientific paper

Compressive Stress Effect on Dielectric Properties of Plasticized Poly(Vinyl-Chloride)

Želimir JELČIĆ ; PLIVA-Research and Development d.o.o., Zagreb
Nives BRAJKOVIĆ ; Elka Cable d.o.o.
Ivica PERČULIJA
Robert MLINARIĆ ; University of Zagreb, Faculty of Science

Abstract

Phase behaviour of poly(vinyl chloride) (PVC) mixtures with plasticizer (dioctyl-phthalate, di-2-ethylhexyl phthalate, DOP) is determined by measuring dielectric permittivity under compressive stress. The dependence of the measured dielectric parameters on the composition of mixtures, temperature and stress has been determined. The DOP contents affect significantly all the properties of the mixtures. The increase in the contents of the DOP plasticizer shifts the relaxation spectrum to lower temperatures, and the increase of compressive stress, towards higher temperatures, and reduces also the intensity of glass transition. Since increasing pressure densifies the material, analogous to lowering the temperature, a non-linear dependence of relaxation transitions on pressure is also expected and observed as shift to higher temperatures.

Keywords

dielectric properties; plasticizer; poly(vinyl chloride) (PVC); compressive stress

Hrčak ID:

50521

URI

https://hrcak.srce.hr/50521

Publication date:

3.4.2010.

Article data in other languages: croatian

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