High loading BaTiO3 nanoparticles chemically bonded with fluorinated silicone rubber for largely enhanced dielectric properties of polymer nanocomposites

Integrating high-loading dielectric nanoparticles into polar polymer matrices potentially can profit the intrinsic polarization of each phase and allow for greatly enhanced dielectric properties in polymer nanocomposites. It is however challenging to achieve desirable highly filled polar polymer com...

Full description

Saved in:
Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2021-12, Vol.23 (46), p.26219-26226
Main Authors: Fang-Yan, Du, Rui-Chao, Chen, Che, Junjin, Wei-Di, Xu, Liu, Xiu, Yin-Tao, Li, Yuan-Lin, Zhou, Yuan, Jinkai, Quan-Ping, Zhang
Format: Article
Language:English
Subjects:
Barium titanates
Chemical bonds
Chemical Sciences
Compatibility
Dielectric properties
Dispersion
Fluorination
Isostatic pressing
Material chemistry
Nanocomposites
Nanoparticles
Polymer matrix composites
Polymers
Silicone resins
Silicone rubber
Silicones
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Integrating high-loading dielectric nanoparticles into polar polymer matrices potentially can profit the intrinsic polarization of each phase and allow for greatly enhanced dielectric properties in polymer nanocomposites. It is however challenging to achieve desirable highly filled polar polymer composites because of the lack of efficient approaches to disperse nanoparticles and maintain interfacial compatibility. Here, we report a versatile route to fabricate highly filled barium titanate/fluorinated silicone rubber (BT/FSR) nanocomposites by “thiol–ene click” and isostatic pressing techniques. The loaded BT nanoparticles (from 82 wt% to 90 wt%) are chemically bonded with FSR in the nanocomposites. The existence of the polar group (–CH2CF3) of the polymer matrix does not affect the uniform dispersion of the nanoparticles or the good interfacial compatibility. The 90 wt% BT/FSR nanocomposite shows the highest dielectric constant of 57.8 at 103 Hz, while the loss tangent can be kept below 0.03. Besides, BT/FSR nanocomposites display higher breakdown strength than BT/SR nanocomposites. This work offers a facile strategy towards superior dielectric properties of polymer nanocomposites.
ISSN:1463-9076
1463-9084
DOI:10.1039/d1cp04040e