Enhancing the dielectric properties of poly (arylene ether nitrile) by introducing co-modified BaTiO₃

Abstract In this study, a facile co-modification of dopamine (DA) and methylphenyldimethoxysilane (MPDS) was utilized to functionalize barium titanate (BaTiO 3 ) nanoparticles with organic functional film. With the film coated on surface BaTiO , compatibility between PEN matrix greatly enhanced, which led promotion in thermal dielectric properties. Results indicated that glass transition temperature (T g @(MPDS+PDA)/PEN composite showed increment from 171.9°C 181.2°C. Besides, constant containing 20 wt.% @(MPDS+PDA) improved 9.32 relative low loss compared /PEN under same additive ratio.