Title :
Influence of BaTiO3 nanoparticles on dielectric, thermophysical and mechanical properties of ethylene-vinyl acetate elastomer/BaTiO3 microcomposites
Author :
Huang, Xingyi ; Xie, Liyuan ; Hu, Zhiwei ; Jiang, Pingkai
Author_Institution :
Dept. of Polymer Sci. & Eng., Shanghai Jiao Tong Univ., Shanghai, China
fDate :
4/1/2011 12:00:00 AM
Abstract :
This paper reports on the effects of nano-BaTiO3 particles on the dielectric, thermophysical (thermal conductivity) and mechanical properties of ethylene-vinyl acetate (EVM) elastomer/BaTiO3 microcomposites. The EVM composites with nano-, micro- and nano/micro hybrid BaTiO3 fillers have been prepared by melt compounding. The results showed that the addition of nano-BaTiO3 particles to micro- BaTiO3/EVM composites could lead to an enhancement in permittivity, thermal conductivity and mechanical strength when compared with the micro-BaTiO3/EVM composites with the same total filler content, whereas the dielectric strength did not show significant difference and the dielectric loss tangent increased slightly. The Maxwell-Garnett effective medium model was used to analyze the BaTiO3 concentration dependence of relative permittivity of the composites.
Keywords :
barium compounds; dielectric losses; ductility; elastomers; electric breakdown; elongation; filled polymers; mechanical strength; melt processing; nanocomposites; nanofabrication; nanoparticles; permittivity; stress-strain relations; thermal conductivity; BaTiO3; Maxwell-Garnett effective medium model; dielectric breakdown strength; dielectric properties; ductility; elongation at break; filler content; mechanical properties; mechanical strength; melt compounding; nano-micro hybrid fillers; nanoparticles; permittivity; stress-strain curves; tensile strength; thermal conductivity; thermophysical properties; Atmospheric measurements; Conductivity; Dielectric measurements; Dielectrics; Electric breakdown; Permittivity; Thermal conductivity; BaTiO3; Permittivity; dielectric loss tangent; dielectric strength; elongation at break; ethylene-vinyl acetate elastomer; mechanical strength; microsized particles; nanosized particles; thermal conductivity;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2011.5739440
