PVDF/BaTiO_(3)@SiO_(2)复合薄膜制备与介电性能  

Fabrication and Dielectric Properties of PVDF/BaTiO_(3)@SiO_(2) Composite Film

作　　者：金敦水[1,2] 谢斌 Jin Dunshui;Xie Bin(Department of Mechanical and Electrical Engineering Anhui Vocational College of Electronics&Information Technology,Bengbu 233000,China;Hefei National Research Center for Micro Scale Material Science,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]安徽电子信息职业技术学院机械工程学院,安徽蚌埠233000 [2]中国科学技术大学合肥微尺度物质科学国家研究中心,合肥230026

出　　处：《工程塑料应用》2021年第5期25-28,共4页Engineering Plastics Application

基　　金：安徽省高校自然科学重点研究项目(KJ2018A0780,KJ2019A1066);安徽省高校优秀拔尖人才资助项目(gxbjZD2020124)。

摘　　要：通过溶胶凝胶法制备不同尺寸的BaTiO3@SiO2复合微球并利用混合辊压法成形聚偏二氟乙烯(PVDF)/BaTiO_(3)@SiO_(2)复合薄膜,通过扫描电子显微镜、透射电子显微镜表征其微观结构,并测试了复合材料的介电常数及介电损耗特性。结果表明,BaTiO_(3)@SiO_(2)复合颗粒与偏二氟乙烯共混热压成形方法,提高了无机颗粒的均匀分散性,同时降低了BaTiO_(3)的介电损耗,解决了目前BaTiO_(3)材料成形难度大、介电损耗大的难题,为性能增强介电材料的制备提供一种新思路。BaTiO_(3)@SiO_(2) composite microspheres with different size by sol-gel method was prepared and fabricate PVDF/BaTiO_(3)@SiO_(2) composite film with heating and rolling process was formed.Scanning electron microscopy(SEM)and transmission electron microscope(TEM)were explored to character the morphology of samples and dielectric properties of films with different component were also researched.The results show that the method of mixture and thermoforming of BaTiO_(3)@SiO_(2) composite particles and PVDF powder can improve the homogeneity and dispersity of inorganic particles and reduce dielectric loss of BaTiO_(3).The method assuredly settles the matters of difficult formability and high dielectric loss of barium titanate and provides novel sight to fabricate enhance dielectric material.

关 键 词：聚偏氟乙烯 复合薄膜 钛酸钡 二氧化硅 介电性能 

分 类 号：TB383.2[一般工业技术—材料科学与工程]