Improving Dielectric Properties in Novel P(VDF-HFP)/V2AlC MAX/Montmorillonite Composite Films via Interfacial Electric-Leakage Depressing Strategy
| Autor: | Junquan Zhou, Qihuang Deng, Xiaofeng Xia, Yefeng Feng, Qin Li, Maolin Bo, Huimin Ding |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Composite number 02 engineering and technology Dielectric Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound Montmorillonite chemistry visual_art visual_art.visual_art_medium Dielectric loss Ceramic Composite material 0210 nano-technology Ternary operation Leakage (electronics) |
| Zdroj: | Electronic Materials Letters. 17:54-62 |
| ISSN: | 2093-6788 1738-8090 |
| Popis: | Dielectric constants of polymer/conductor composites are often high, owing to strong interface interaction in those composites. They can be used for dielectric energy storage, but they usually have high dielectric loss and conductivity. In order to reduce the dielectric loss and conductivity in poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP))/V2AlC MAX composites, in this study, we explored the novel P(VDF-HFP)/V2AlC MAX/montmorillonite (MMT) ternary composites. Compared with binary composites, the ternary composites showed the mildly reduced dielectric constant, significantly decreased dielectric loss and conductivity. Using highly-conductive V2AlC MAX filler aimed at taking advantage of the polymer/MAX interface polarization to increase the dielectric response of composites. Employing well-insulating MMT filler aimed at reducing the interface electric leakage conduction. At 1 kHz, the outstanding ternary composite with 2 wt% MMT and 20 wt% MAX could exhibit a high dielectric constant of ca. 27 and low dielectric loss of ca. 0.21. This work might offer a new research idea for the construction of high-performance composite dielectric films containing modern MAX ceramic fillers. |
| Databáze: | OpenAIRE |
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