钛酸钡-环氧树脂复合材料的制备与介电性研究  

Study on the Fabrication and Dielectric of Barium Titanate-Epoxy Composite

作　　者：王歆[1] 夏亚飞[1] 刘继红[1] 刘勇[2] 

机构地区：[1]华南理工大学材料学院,广州510641 [2]华南农业大学理学院,广州510642

出　　处：《中国陶瓷》2014年第3期20-23,共4页China Ceramics

基　　金：中央高校基本科研业务费专项资金资助(2012ZM0008);广东省自然科学基金博士启动项目(S2011040001023)

摘　　要：为获得介电性高、损耗低并且加工性好的电介质材料,实验采用钛酸钡(BaTiO3)与环氧树脂复合,制备钛酸钡-环氧树脂复合材料。通过KH550改性钛酸钡粉体,使粉体具有更好的表面活性与分散性。研究了钛酸钡填充量对复合材料的微观结构、介电性能和电导率的影响。结果显示,随着钛酸钡含量的增加,钛酸钡-环氧树脂复合材料的介电常数增大,同时相应的介电损耗也随着增加,电导率呈上升趋势。不同BaTiO3体积填充量时,介电常数随温度变化趋势相同,但变化幅度随BaTiO3填充量的增大而增大。In order to get a new kind of dielectric materials with the properties of high dielectric constant, low loss tangent and good processability, the polymer-matrix composites of epoxy and nano-barinm titanate（BaTiO3） were prepared.KH550 was selected to modify the BaTiO3 powder to obtain better surface activity and dispersibility. The influence of barium titanate content to microstructure, dielectric properties and conductivity of the composite was researched. The results showed that, with the increase of the content of barium titanate, dielectric constant and dielectric loss of the composite increased. To BaTiO3-epoxy composite with different BaTiO3 filling volume, the trends of the dielectric constant change with temperature were similar, but the amplitude of change increased as BaTiO3 filler content increase.

关 键 词：钛酸钡 环氧树脂 复合材料 介电性能 

分 类 号：TM286[一般工业技术—材料科学与工程]