退火对PI/TiO_(2)/Pt/P(VDF-TrFE)/Pt柔性复合膜的铁电性的影响  

Effect of Annealing on Ferroelectricity of PI/TiO_(2)/Pt/P(VDF-TrFE)/Pt Flexible Films

作　　者：郭聪 陈隆 赵哲臻 车路平 李静 GUO Cong;CHEN Long;ZHAO Zhezhen;CHE Luping;LI Jing(China Coast Guard Academy,Ningbo 315801,China)

机构地区：[1]武警海警学院,浙江宁波315801

出　　处：《化工技术与开发》2024年第5期31-33,共3页Technology & Development of Chemical Industry

基　　金：武警海警学院校级基金项目(2023YJXM01)。

摘　　要：本文采用溶胶凝胶法制备了PI/TiO_(2)/Pt/P(VDF-TrFE)/Pt柔性复合膜,研究了退火温度对复合膜中β相含量的影响。SEM电镜扫描结果显示,复合膜为截面清晰、结构致密性好、透光性强的二维结构。XRD衍射结果显示,在一定范围内,提高退火温度有助于α晶群转变为β晶群,130℃下β相含量达到最高,超过阈值温度后,结晶过程受到破坏,β相晶群含量明显下降。铁电测试结果显示130℃下,剩余极化强度最高为8.76μC·cm-2;温度继续升高会使铁电极化强度有明显下降,这可能与温度过高导致缺陷增多有关。PI/TiO_(2)/Pt/P(VDF-TrFE)/Pt flexible films was prepared by sol-gel method,and the effect of annealing temperatures onβphase was discussed in this study.The SEM results showed that the composite film was a two-dimensional structure with clear cross section,dense structure,and good transparency.The XRD results showed that increasing annealing temperature helpedαphase transforms intoβphase.Content ofβphase presented highest value at 130℃.After exceeding the threshold temperature,the crystallization process was disrupted,andβphase content was significantly decreased.The ferroelectric test results showed that the highest residual polarization strength was 8.76μC/cm2 at 130℃.Continuing to increase the temperature would significantly decrease the ferroelectric polarization intensity,which may be related to the increase in defects caused by excessive temperature.

关 键 词：P(VDF-TrFE) Β相 铁电性 退火 

分 类 号：TB383[一般工业技术—材料科学与工程]