Polymer composites with high dielectric constant have broad application prospect in energy storage and artificial muscle.BaTiO3 was surface modified by poly(arylene ether nitrile)containing side carboxyl (BT@PEN) in order to improve its dispersity in PVDF.Then PVDF/BT@PEN nanocomposite films with different loading of BT@PEN nanoparticles were prepared by solution cast technique.The experimental results showed that PVDF/BT@PEN nanocomposites had very good thermal stability,and the initial decomposing temperature was over 440℃.The dielectric properties of PVDF/BT@PEN nanocomposites revealed that the dielectric constant gradually increased with the loading of BT@PEN.Especially,when the loading of BT@PEN reached to 20%,the dielectric constant could be higher than 12 at 100Hz.
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基金资助
中央高校基本科研业务费(310831161017);中国博士后科学基金(2016M602745);国家级大学生创新创业训练计划项目(201810710131)
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