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High dielectric constant epoxy nanocomposites containing ZnO quantum dots decorated carbon nanotube
Author(s) -
Liu Cong,
Daneshvar Farhad,
Hawkins Spencer,
Kotaki Masaya,
Sue HungJue
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49778
Subject(s) - nanocomposite , materials science , dielectric , carbon nanotube , epoxy , composite material , polymer nanocomposite , dielectric loss , polymer , high κ dielectric , optoelectronics
Zinc oxide (ZnO) quantum dot (QD) decorated multi‐walled carbon nanotube (MWCNT) hybrid was utilized in the fabrication of high dielectric constant epoxy nanocomposites. Because of the shielding effect of ZnO QD, the well‐dispersed epoxy hybrid nanocomposites exhibit frequency insensitive high dielectric constant as well as greatly reduced dielectric loss. With only 1.5 wt% of MWCNT addition, the epoxy/MWCNT‐ZnO nanocomposite possesses dielectric constant as high as 31 and dielectric loss as low as 0.01 at 1 kHz. In addition, the epoxy nanocomposite exhibits greatly enhanced tensile properties. The role of ZnO QD decorated MWCNT in the preparation and property improvement of multi‐functional polymer nanocomposites is discussed.