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Flexible hdC-G reinforced polyimide composites with high dielectric permittivity

Title data

Liao, Xiaojian ; Ye, Wan ; Chen, Linlin ; Shaohua, Jiang ; Wang, Guan ; Zhang, Lin ; Hou, Haoqing:
Flexible hdC-G reinforced polyimide composites with high dielectric permittivity.
In: Composites Part A: Applied Science and Manufacturing. Vol. 101 (October 2017) . - pp. 50-58.
ISSN 1878-5840
DOI: https://doi.org/10.1016/j.compositesa.2017.06.011

Abstract in another language

Carbon nanotubes (CNTs) reinforced composites with high dielectric permittivity empower miscellaneous applications in flexible electronics but are hindered by the large addition and agglomeration of fillers and weak mechanical performance. Here, we prepare homogeneous dispersion of CNTs and graphene oxide (hdC-G) via solvent-exchange, and fabricate hdC-G/polyimide (PI) composite films by in situ polymerization and thermal imidization. The achieved hdC-G can construct a 3D network and keep a long term stability. The hdC-G/PI composites show high dielectric permittivity of 124.9 at 100 Hz, 4000% higher than that of pure PI. The hdC-G/PI composites also exhibit enhanced thermal stability and improved tensile strength without sacrificing the flexibility. This solvent-exchange approach can greatly enrich the applications of synergistic uses of CNTs and GO in composites and the hdC-G/PI composites with simultaneously high dielectric permittivity, low content of fillers, good mechanical and thermal performances can be good candidates for flexible electronics.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Hybrid; B. Mechanical properties; Dielectric properties; Solvent-exchange
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Graduate Schools
Graduate Schools > University of Bayreuth Graduate School
Result of work at the UBT: No
DDC Subjects: 500 Science
500 Science > 540 Chemistry
Date Deposited: 10 Mar 2021 08:42
Last Modified: 10 Mar 2021 09:24
URI: https://eref.uni-bayreuth.de/id/eprint/63823