PVDF/BT纳米复合薄膜综合实验设计  

Comprehensive Experimental Design of PVDF/BT Nanocomposite Film

作　　者：张小山[1] 高心越 杨扩 张家维 赵子丹 王鹏展 王文武[1] ZHANG Xiaoshan;GAO Xinyue;YANG Kuo;ZHANG Jiawei;ZHAO Zidan;WANG Pengzhan;WANG Wenwu(College of Material Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学材料科学与工程学院,成都610065

出　　处：《实验科学与技术》2022年第6期12-17,共6页Experiment Science and Technology

基　　金：四川大学大学生创新创业训练计划(C2021116377);四川大学实验技术改革项目(SCU201064);四川大学创新创意实验项目(SCU203017);四川大学实验技术改革项目(SCU221031)。

摘　　要：埋入式柔性电容器是柔性印刷电路板的重要组成元件,在国民经济和国防工业领域有着广泛的应用前景。为获得一种具有高介电常数的柔性电容器材料,以功能化纳米钛酸钡(BT)颗粒为填充材料,PVDF作为柔性基质材料,采用溶液铸膜法和多层叠加热压法制备了具有三明治结构的PVDF/BT//PVDF//PVDF/BT三层复合物薄膜,研究了该薄膜的相结构、微观形貌以及介电性能。结果表明,热压法获得的薄膜结构致密,无明显缺陷,随着BT含量的增加,三层复合物膜的介电常数增加,当PVDF:BT=1:6时,介电常数达38.9,比纯PVDF提高了412%,且三层复合物薄膜仍具有良好的柔韧性。PVDF/BT纳米复合薄膜综合实验研究内容涉及材料成分、结构、设计、制备与性能,通过该综合实验使学生能进一步理解材料科学领域研究的主要内容,对促进学生创新思维的形成具有积极的作用。The embedded capacitor with good flexibility is a key component of the flexible printed circuit board,which has a broad application prospect in the field of national economy and defense industry.In order to obtain a kind of flexible capacitor material with high dielectric constant,with functionalized nano barium titanate(BT) particles as the filling agent and PVDF as the flexible matrix,the three-layer composite film with a sandwich structure(PVDF/BT//PVDF//PVDF/BT) was prepared by solution casting method and multilayer hot pressing method.The phase structure,micro morphology and dielectric properties of the prepared film were discussed.The results show that the structure of the films obtained by hot pressing is compact without obvious defects.With the increase of BT content,the dielectric constant of the films increases.As the ratio of PVDF:BT was increased to 1:6,the dielectric constant is 38.9,which is 412% higher than that of pure PVDF,and the three-layer composite film still has good flexibility.The comprehensive experimental research content of the PVDF/BT nanocomposite film involves material composition,structure,design,preparation and performance.Through the comprehensive experiment,students can further understand the main content of research in the field of materials science,which plays a positive role in promoting the formation of students’ innovative thinking.

关 键 词：钛酸钡 PVDF 介电常数 复合材料 多层膜结构 

分 类 号：O487[理学—固体物理]