Dielectric and piezoelectric properties of (K0.475Na0.495Li0.03) NbO3-0.003ZrO2/PVDF 0–3 composite reinforced with two types of nano-ZnO particles

Yu, Kun; Hu, Shan; Tan, Junqin; Yu, Wendi

doi:10.1007/s10854-019-02650-w

Cited by 7 publications

(4 citation statements)

References 61 publications

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“…Either ceramic dielectric oxides or polymers are used for majority of the aforesaid applications because ceramic oxides possess high dielectric permittivity (ε r = 200-10,000 [4][5][6][7]) and high stiffness (elastic modulus between 50-100 GPa [8][9][10][11]). These materials also suffer from high dielectric loss over broad frequency bands and relatively high mechanical stiffness, which makes them susceptible to premature failure when subjected to extensive cyclic operation and inherently low breakdown field strength.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dielectric Permittivity of Optimized Surface Modified of Barium Titanate Nanocomposites

2020

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High permittivity polymer-ceramic nanocomposite dielectric films take advantage of the ease of flexibility in processing of polymers and the functionality of electroactive ceramic fillers. Hence, films like these may be applied to embedded energy storage devices for printed circuit electrical boards. However, the incompatibility of the hydrophilic ceramic filler and hydrophobic epoxy limit the filler concentration and therefore, dielectric permittivity of these materials. Traditionally, surfactants and core-shell processing of ceramic fillers are used to achieve electrostatic and steric stabilization for adequate ceramic particle distribution but, questions regarding these processes still remain. The purpose of this work is to understand the role of surfactant concentration ceramic particle surface morphology, and composite dielectric permittivity and conductivity. A comprehensive study of barium titanate-based epoxy nanocomposites was performed. Ethanol and 3-glycidyloxypropyltrimethoxysilan surface treatments were performed, where the best reduction in particle agglomeration, highest value of permittivity and the lowest value of loss were observed. The results demonstrate that optimization of coupling agent may lead to superior permittivity values and diminished losses that are ~2–3 times that of composites with non-optimized and traditional surfactant treatments.

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Section: Introductionmentioning

confidence: 99%

Enhanced Dielectric Permittivity of Optimized Surface Modified of Barium Titanate Nanocomposites

2020

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“…The piezoelectric coefficient d 33 for the 10 wt% ZnO 2 -integrated KNNL-Z/PVDF/ZnO 2 composite was found to be 55 pC N −1 , which was 1.5 times greater than observed in the KNNL-Z/PVDF composite. 140 It indicates that ZnO plays a crucial role in enhancing the electroactive properties of the composites due to the lattice distortion induced by Zn 2+ .…”

Section: Piezoelectric Constant Of Polyvinylidene Difluoride and Its ...mentioning

confidence: 99%

Recent progress on polyvinylidene difluoride-based nanocomposites: applications in energy harvesting and sensing

et al. 2022

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“…By choosing a flexible matrix, piezoelectric composites can be less fragile than bulk ceramics, such as bulk lead zirconate titanate (PZT) and barium titanate (BaTiO 3 ) [ 10 ]. Moreover, the appropriate selection of a ferroelectric filler results in materials operating at high temperatures, and therefore more advantageous than classical electroactive polymers like polyvinylidene difluoride (PVDF), P(VDF-TrFE) copolymer, and P(VDF-TrFE-CTFE) terpolymer [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Additional advantages are the low cost, ease of manufacture and reduced polarization electric field compared to common electroactive fluoropolymers [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Dielectrophoresis Structurization of PZT/PDMS Micro-Composite for Elastronic Function: Towards Dielectric and Piezoelectric Enhancement

D'Ambrogio

Zahhaf

et al. 2021

Materials

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Piezoelectric materials have been used for decades in the field of sensors as transducers and energy harvesters. Among these, piezoelectric composites are emerging being extremely advantageous in terms of production, costs, and versatility. However, the piezoelectric performances of a composite with randomly dispersed filler are not comparable with bulk ferroelectric ceramics and electroactive polymers. In order to achieve highly performing and low-cost materials, this work aims to develop flexible composites made of Lead zirconate titanate (PZT) filler in Polydimethylsiloxane (PDMS) matrix, with a specific internal structure called quasi-1–3 connectivity. Such a structure, comprising particles arranged in columns along a preferred direction, is performed through dielectrophoresis by applying an alternating electric field on the composite before and during the polymerization. The developed flexible material could be introduced into complex structures in various application fields, as sensors for structural monitoring.

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Dielectric and piezoelectric properties of (K0.475Na0.495Li0.03) NbO3-0.003ZrO2/PVDF 0–3 composite reinforced with two types of nano-ZnO particles

Cited by 7 publications

References 61 publications

Enhanced Dielectric Permittivity of Optimized Surface Modified of Barium Titanate Nanocomposites

Enhanced Dielectric Permittivity of Optimized Surface Modified of Barium Titanate Nanocomposites

Recent progress on polyvinylidene difluoride-based nanocomposites: applications in energy harvesting and sensing

Dielectrophoresis Structurization of PZT/PDMS Micro-Composite for Elastronic Function: Towards Dielectric and Piezoelectric Enhancement

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