A comparative analysis of dielectric, rheological and thermophysical behaviour of ethylene vinyl acetate/BaTiO₃composites

Abstract

Dielectric, rheological and thermal behaviours of ethylene vinyl acetate/barium titanate sphere (EVA/BaTiO3) composite materials were investigated in this work. Several composites were prepared for different volume concentrations (from 5% to 49%) and for two types of spheres sizes d: d = 9 µm and d = 105 µm. We show that the use of larger particles allows an increase of dielectric permittivity and thermal conductivity, particularly at high filler concentrations. A comparison between the thermal, dielectric and rheological behaviours of the composites is also reported in this paper. A linear dependence of the relative variation of thermal conductivity and dielectric permittivity, on the one hand, and thermal conductivity and Newtonian viscosity, on the other, was shown.

Effect of the ceramic filler features on the properties of photopolymerized BaTiO3‐acrylic composites

“…The dielectric constant increased almost linearly with the filler amount for both types of BT powders. A similar behavior has been found for many polymer‐matrix composites [8–14], supporting the beneficial effect of the use of ferroelectric ceramic powders as fillers. To analyze the effect of the filler amount, Fig.…”

Transport properties of polyester composite reinforced with treated sisal fibers

“…The values of and the regression factor are given in Table 5. A similar result was reported by Agoudjil et al 34,41 using ethylene vinyl acetate (EVA) matrix filled with two types of spheres sizes of barium titanate. These values are approximately equal to the ones obtained in this article (Table 5).…”

“…41 (Table 5). This correlation was observed by the authors of Agoudjil et al 34,41 when varying the filler volume fraction. In this work, it seems that the correlation is valid also when using thermal and permanganate treatments.…”

Dielectric relaxation behaviour of ethylene-vinyl acetate–exfoliated graphene nanoplatelets (xGnP) composites

“…The different applications of elastomers can be made beneficial by the incorporation of carbon based fillers to form elastomeric composites. These composites with high permittivity have attracted more and more attention due to their easy processibility and flexibility [15,16]. The elastomer ethylene vinyl acetate (EVA) is proved to be very compatible for carbon-based fillers.…”