Abstract
Barium titanate (BT) and polyarylene ether nitrile (PEN) nanocomposites with enhanced dielectric properties were obtained by using carboxylatedzinc phthalocyanine (ZnPc-COOH) buffer as the plasticizer. Carboxylated zinc phthalocyanine, prepared through hydrolyzing ZnPc in NaOH solution, reacted with the hydroxyl groups on the peripheral of hydrogen peroxide treated BT (BT-OH) yielding core-shell structured BT@ZnPc. Thermogravimetric analysis (TGA), transmission electron microscopy (TEM), TEM energy dispersive spectrometer mapping, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) demonstrated successful preparation of BT@ZnPc. The fabricated BT@ZnPc was incorporated into the PEN matrix through the solution casting method. Rheological measurements demonstrated that the ZnPc-COOH buffer can improve the compatibility between BT and PEN effectively. With the existence of the ZnPc-COOH buffer, the prepared BT@ZnPc/PEN nanocomposites exhibit a high dielectric constant of 5.94 and low dielectric loss (0.016 at 1000 Hz). BT@ZnPc/PEN dielectric composite films can be easily prepared, presenting great application prospects in the field of organic film capacitors.
Highlights
To fulfil demands from up-to-date electronic industry, high dielectric permittivity material has shown its essentiality in the fields of capacitors, electromagnetic interference shielding materials, and energy storage fields. [1,2,3] Comparing with the traditional high dielectric ceramic materials including barium titanate (BaTiO3 ), piezoelectric ceramic transducer lead zirconatetitanate etc., [4,5], the polymer dielectric materials are widely used in energy storage appliances owing to their light weight, flexibility, and easy processing, which show the suitability for the lightweight devices and miniaturization [6,7,8]
Polyarylene ether nitrile (PEN) and Barium titanate (BT) nanocomposites with enhanced dielectric properties were obtained by using a ZnPc buffer as the plasticizer
The ZnPc, which was wrapped on the surface of BT, showed excellent compatibility with the PEN matrix which contributed to the enhanced properties of the system
Summary
To fulfil demands from up-to-date electronic industry, high dielectric permittivity material has shown its essentiality in the fields of capacitors, electromagnetic interference shielding materials, and energy storage fields. [1,2,3] Comparing with the traditional high dielectric ceramic materials including barium titanate (BaTiO3 ), piezoelectric ceramic transducer lead zirconatetitanate etc., [4,5], the polymer dielectric materials are widely used in energy storage appliances owing to their light weight, flexibility, and easy processing, which show the suitability for the lightweight devices and miniaturization [6,7,8]. PEN shows low processing temperature, great temperature resistance, and short molding period compared with polyetheretherketone (PEEK) [16,17] These advantages facilitate the processing of PEN into all kinds of forms to fulfill the dielectric applications. Polymers 2019, 11, x FOR PEER REVIEW great temperature resistance, and short molding period compared with polyetheretherketone (PEEK) [16,17] Most of the fillers are inorganic materials, which show poor compatibility with the polymer polymer matrix This will will further further result result in in the the phase phase separation separation between between the the polymer polymer matrix matrix and and the the fillers which elevates the dielectric loss simultaneously [19,20]. Property of the obtained polymeric composite dielectric materials was further studied
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