Towards suppressing dielectric loss of GO/PVDF nanocomposites with TA-Fe coordination complexes as an interface layer
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2018年第12期
论文作者：Ying Gong Wenying Zhou Zijun Wang Li Xu Yujia Kou Huiwu Cai Xiangrong Liu Qingguo Chen Zhi-Min Dang
文章页码：2415 - 2423
摘 要：In this work, graphene oxide（GO） nanosheets with surface modification by Tannic and Fe coordination complexes（TA-Fe） were incorporated into poly（vinylidene fluoride）（PVDF） to prepare high constant but low loss polymer nanocomposites, and the effect of TA-Fe interlayer on dielectric properties of the GO@TA-Fe/PVDF nanocomposites was investigated. The results indicate that the dosage, mixing ratio, and reaction time of TA-Fe complexes have obvious influences on the dielectric properties of the nanocomposites. Furthermore, the TA-Fe interlayer significantly influences the electrical properties of GO@TA-Fe nanoparticles and their PVDF composites, and the GO@TA-Fe/PVDF composites exhibit superior dielectric properties compared with raw GO/PVDF. Dielectric losses of the GO@TA-Fe/PVDF are significantly suppressed to a rather low level owing to the presence of TA-Fe layer, which serves as an interlayer between the GO sheets, thus preventing them from direct contacting with each other. Additionally, the dynamic dielectric relaxation of the GO/PVDF and GO@TA-Fe/PVDF nanocomposites was investigated in terms of temperature.
Ying Gong1,2，Wenying Zhou1,2，Zijun Wang1,3，Li Xu1，Yujia Kou1，Huiwu Cai1，Xiangrong Liu1，Qingguo Chen2，Zhi-Min Dang1,4
1. College of Chemistry and Chemical Engineering,Xi’an University of Science & Technology2. Key Laboratory of Engineering Dielectrics and Its Application,Ministry of Education,Harbin University of Science and Technology3. Shanghai Research Institute of Petrochemical Technology4. State Key Laboratory of Power System and Department of Electrical Engineering,Tsinghua University
摘 要：In this work, graphene oxide（GO） nanosheets with surface modification by Tannic and Fe coordination complexes（TA-Fe） were incorporated into poly（vinylidene fluoride）（PVDF） to prepare high constant but low loss polymer nanocomposites, and the effect of TA-Fe interlayer on dielectric properties of the GO@TA-Fe/PVDF nanocomposites was investigated. The results indicate that the dosage, mixing ratio, and reaction time of TA-Fe complexes have obvious influences on the dielectric properties of the nanocomposites. Furthermore, the TA-Fe interlayer significantly influences the electrical properties of GO@TA-Fe nanoparticles and their PVDF composites, and the GO@TA-Fe/PVDF composites exhibit superior dielectric properties compared with raw GO/PVDF. Dielectric losses of the GO@TA-Fe/PVDF are significantly suppressed to a rather low level owing to the presence of TA-Fe layer, which serves as an interlayer between the GO sheets, thus preventing them from direct contacting with each other. Additionally, the dynamic dielectric relaxation of the GO/PVDF and GO@TA-Fe/PVDF nanocomposites was investigated in terms of temperature.
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