LUO Suibin ^1,2 ,YU Shuhui ² ,SUN Rong ² ,CHEN Chong ² ,ZHUANG Zhiqiang¹

(1. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640; 2. Shenzhen Institute of Advanced Technology, Shenzhen 518067)

Abstract: The thick film of BaTiO₃ -epoxy composite was fabricated over a large area with bar coating method. The curing behavior of the epoxy resin, the microstructure, peel strength and dielectric properties of BaTiO₃-epoxy composite were investigated. The results show that when the loading of BT was 40 vol%, the peel strength of the composite achieved the maximum, and was rapidly reduced when the content of BT was further increased, which is caused by the increasing of air holes in the composite. The dielectric constant and loss were increased with BT content. When the loading of BT was fixed,the dielectric constant and loss were reduced and increased with frequency, respectively.

Keywords: BaTiO₃, epoxy resin, bar coating, embedded capacitor