Electret Properties of Barium Titanate Filled Polyethylene

摘要

The paper demonstrates electret characteristics of the compositions of LDPE and BaTiO_3 to be higher than the ones of pure LDPE. Adding 10 vol.% of ferroelectric filler fivefold increases the polyethylene U_(EPD) and σ_(,off) values. It is connected with attraction of ferroelectric domain, oriented while charging, on injected carriers. Heating of the LDPE and BaTiO_3 compositions up to 200℃ doesn't lead to decrease of electret properties, thus it is possible to process electret sheets and plates into different-purpose products by the molding methods.