表面修饰BaTiO3对聚偏氟乙烯热性能和介电性能的影响规律研究  

Influence of surface modified BaTiO3 on thermal stability and dielectric property of PVDF

作　　者：魏俊基[1] 申爱琴[2] 宋家乐[1] 晏妮 王凤燕[1] 马佳哲 Wei Junji;Shen Aiqin;Song Jiale;Yan Ni;Wang Fengyan;Ma Jiazhe(School of Materials Science and Engineering,Xi'an 710064;School of Highway,Chang'an University,Xi'an 710064)

机构地区：[1]长安大学材料科学与工程学院,西安710064 [2]长安大学公路学院,西安710064

出　　处：《化工新型材料》2019年第7期103-106,共4页New Chemical Materials

基　　金：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)

摘　　要：高介电常数的高分子复合材料可以被广泛应用于能量存储和人工肌肉领域。利用含羧基聚芳醚腈(PEN)对BaTiO3(BT)纳米粒子进行表面修饰,以增加BT在高分子基体聚偏氟乙烯(PVDF)中的分散性。通过溶液浇铸法,制备了一系列BT@PEN含量不同的高分子复合薄膜(PVDF/BT@PEN)。结果表明:PVDF/BT@PEN具有很好的热稳定性,起始分解温度超过了440℃。同时,复合薄膜的介电常数k随着BT@PEN质量含量的增加逐渐增大。当BT@PEN质量含量为20%时,复合薄膜在100Hz时的介电常数大于12。Polymer composites with high dielectric constant have broad application prospect in energy storage and artificial muscle.BaTiO3was 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 [e-mail],when the loading of BT@PEN reached to 20%,the dielectric constant could be higher than 12at 100Hz.

关 键 词：纳米复合薄膜 介电弛豫 聚偏氟乙烯 羧基聚芳醚腈 

分 类 号：TQ325.4[化学工程—合成树脂塑料工业]