Effect of aging time on the dielectric properties of PI/CCTO composite thin films

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Gao, Liang^1 ; Wang, Jiulong^1 ; Song, Lingyun^1

College of Electrical and Engineering, Suihua University, Suihua, China^1

关键词: 4 ,4-oxydianiline;    Aging time;    CaCu3Ti4O12;    Composite thin films;    In-situ polymerization;    Loss tangent;    Minimum value;    PI composite;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/2/022006/pdf
DOI  :  10.1088/1757-899X/394/2/022006

来源: IOP

【 摘 要 】

In this paper, Pyromellitic diancomposite (PMDA) and 4,4-Oxydianiline (ODA) were selected as the monomers and CaCu3Ti4O12 (CCTO) particles were used as filler to synthesize the PI/CCTO composite film by the in situ polymerization. The phase composition and dielectric property of the composites were analyzed and tested by XRD and a broadband dielectric spectral instrument. The effects of aging time on the dielectric properties of PI and PI/CCTO composite films were researched. Results show that the aging time can improve the dielectric property of the PI composite film and the optimal aging time is 24h. The PI/CCTO composite film plays the minimum value of the loss tangent about 0.022 and the maximum value of the dielectric constant about 8.8 at 100Hz, which is 1.6 times larger than that of PI film.