Fabrication and Enhanced Dielectric Properties of Polyimide Matrix Composites with Core–shell Structured CaCu 3 Ti 4 O 12 @tio 2 Nanofibers
Journal of Materials Science Materials in Electronics(2018)
School of Chemistry and Chemical Engineering
Abstract
Core–shell structured CaCu3Ti4O12@TiO2 (CCTO@TiO2) nanofibers were prepared via a normal coaxial electrospinning technique with sol precursors. Polyimide (PI) nanocomposite films containing the core–shell structured CCTO@TiO2 nanofibers were fabricated by the solution casting method. The core–shell structure of the CCTO@TiO2 nanofibers was confirmed through transmission electron microscope. The percolation of the CCTO/TiO2 interfaces leads to much enhanced interfacial polarization of the CCTO@TiO2 nanofibers, which gives rise to substantially increased dielectric constant of the nanocomposites. Compared to the nanocomposites with CCTO nanofibers, the breakdown strength of the nanocomposites with CCTO@TiO2 nanofibers is also increased due to the charge shifting is limited to the interfacial zone of CCTO/TiO2 interfaces, instead of in the PI matrix to form a percolation path. For the nanocomposites with 5 vol% nanofibers, the dielectric constant of 5.55 was enhanced to 5.85 and the breakdown strength of 201 kV/mm was increased to 236 kV/mm by utilizing the TiO2 coated CCTO nanofibers, while the dielectric loss shows no obvious change. Meanwhile, the PI nanocomposite film filled with 1 vol% CCTO@TiO2 nanofibers exhibits a maximal energy density of 1.6 J/cm3. The core–shell structured nanofibers open up an effective way to optimize the dielectric properties of polymer nanocomposites with high energy density.
MoreTranslated text
Key words
Nano-composites
PDF
View via Publisher
AI Read Science
Must-Reading Tree
Example

Generate MRT to find the research sequence of this paper
Related Papers
Materials 2019
被引用27
Journal of Materials Science Materials in Electronics 2018
被引用9
ACS Sustainable Chemistry & Engineering 2018
被引用94
Journal of Alloys and Compounds 2019
被引用30
Ceramics International 2019
被引用14
Cellulose 2019
被引用22
Journal of Materials Science Materials in Electronics 2019
被引用0
Improved Electrical Performance of MgO-modified CaCu3Ti4O12 Ceramics
Physica B Condensed Matter 2019
被引用21
APPLIED PHYSICS LETTERS 2019
被引用34
Journal of Materials Science Materials in Electronics 2020
被引用13
Journal of Materials Chemistry C 2020
被引用34
CRYSTALS 2020
被引用18
INTERNATIONAL JOURNAL OF ENERGY RESEARCH 2020
被引用11
Effective Strategies for Reduced Dielectric Loss in Ceramic/ Polymer Nanocomposite Film
CERAMICS INTERNATIONAL 2021
被引用18
Rational Design of Nanomaterials for High Energy Density Dielectric Capacitors Via Electrospinning
Energy storage materials 2021
被引用42
HIGH PERFORMANCE POLYMERS 2021
被引用5
PVDF Promotes TiO2 Dispersion to Obtain Composite Films with High Dielectric Constant and Low Loss
HIGH PERFORMANCE POLYMERS 2022
被引用5
MACROMOLECULAR CHEMISTRY AND PHYSICS 2021
被引用7
Journal of Materials Science Materials in Electronics 2022
被引用8
Polymers for Advanced Technologies 2022
被引用5
Chemical Engineering Journal 2021
被引用33
Research Status of PI Composite Nano Titanium Containing Compound Films
Plastics Science and Technology 2022
被引用0
Journal of Applied Polymer Science 2022
被引用4
CHEMISTRYSELECT 2023
被引用0
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 2023
被引用6
PROGRESS IN ORGANIC COATINGS 2023
被引用2
POLYMER COMPOSITES 2023
被引用3
PHYSICA B-CONDENSED MATTER 2024
被引用5
JOURNAL OF POLYMER SCIENCE 2024
被引用0
Data Disclaimer
The page data are from open Internet sources, cooperative publishers and automatic analysis results through AI technology. We do not make any commitments and guarantees for the validity, accuracy, correctness, reliability, completeness and timeliness of the page data. If you have any questions, please contact us by email: report@aminer.cn
Chat Paper
去 AI 文献库 对话