Dielectric and Pyroelectric Properties of Ferroelectric <scp>SBN–PVDF</scp> Composites Prepared by Hot‐Uniaxial Press

Kumar, Sanjay; Kumar, P.

doi:10.1111/j.1744-7402.2012.02808.x

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…Temperature, pressure, and operating time are the three primary factors in the hot press. Most hot press operations require a temperature of at least 150°C, and occasionally even 200°C [26,27]. Depending on the experimental circumstances, the hot press's pressures differ from one another.…”

Section: Hot Press Methodsmentioning

confidence: 99%

“…FTIR: One of the most often used methods for examining is FTIR (Fourier transform infrared spectroscopy). The importance of FTIR microscopy is the micro-destructive study of tiny samples and the advent of mapping and imaging technology has made it possible to gather several FTIR spectra on a surface and produce a distribution map of recognized substances [26]. Figure 1 displays the results of calculating the relative beta phase using FTIR spectra [17].…”

Section: Pvdf Incorporated With Bnbt To Form a Compositementioning

confidence: 99%

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Perspective and Developments in Composite Films Combining Lead-Free Ferroelectric Ceramic and PVDF for Energy Storage Capacitors

Amrita Singh,

Punith Kumar V,

Maheshwar

et al. 2024

Int Res J Adv Engg Hub

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To enhance the advancement of excellent energy storage capacity in lead-free dielectric capacitors, we conducted an extensive review of recent research articles focusing on the utilization of energy storage in various lead-free dielectric materials, including ceramics and polymer-based composites. Devices that can store and release electrical energy when needed are called energy storage capacitors. They are used in many different industries, including power electronics, electric cars, and renewable energy. However, conventional dielectric materials for capacitors have low energy density and high leakage current, which limit their performance and reliability. New materials that have a high energy density, little loss, and good stability must thus be developed. Using polyvinylidene fluoride (PVDF) using ferroelectric ceramic free of lead to make composite films is one approach that seems promising. Ferroelectric ceramics free of lead exhibit strong polarization and permittivity, while PVDF has high breakdown strength and flexibility. The composite films can achieve synergistic effects of both components and enhance the energy storage properties. This review article outlines the latest developments and difficulties in the synthesis, characterization, and creation of composite films for PVDF-based energy storage capacitors and lead-free ferroelectric ceramics. It also discusses the potential applications and prospects of these materials [1][2][3][4].

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Section: Hot Press Methodsmentioning

confidence: 99%

Section: Pvdf Incorporated With Bnbt To Form a Compositementioning

confidence: 99%

Perspective and Developments in Composite Films Combining Lead-Free Ferroelectric Ceramic and PVDF for Energy Storage Capacitors

Amrita Singh,

Punith Kumar V,

Maheshwar

et al. 2024

Int Res J Adv Engg Hub

View full text Add to dashboard Cite

show abstract

“…PVDF is a semicrystalline polymer, with 50-70 % crystalline, and shows typically four crystalline forms (a-, b-, r-, and c-form) [9,10]. Among those forms, b-form exhibits the highest electric properties coefficients [11]. Its main chain, -CH 2 -CF 2 -, has a large dipole moment resulting in a high dielectric constant [12,13].…”

Section: Introductionmentioning

confidence: 98%

Increment of dielectric constant in binary composite based on PVDF/clay system

Bunnak

Laoratanakul

Bhalla

et al. 2015

J Mater Sci: Mater Electron

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Binary composite films, with 10 wt% of barium doped porous clay heterostructure (Ba-PCH) in polyvinylidene difluoride, were fabricated by using mechanical mixing (Brabender) and hot pressing methods. The grain morphology of the composite films, as investigated by using the field emission scanning electron microscope, exhibits some agglomeration of Ba-PCH particles. The dielectric properties, as functions of frequency and temperature, were measured using a network analyzer. The dielectric constant of the composite film exhibits strong frequency and temperature dependence. The sharp drop of the dielectric constant is resulted, when temperature is decreased below the glass transition temperature of the polyvinylidene difluoride. The relaxation behaviors are analyzed carefully using the Arrhenius law and the other possible mechanisms and the study indicated that the dielectric behavior in these composite films is highly dominated by the electronic polarizability contributions.

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Enhanced pyroelectric properties of lead free KNN/P(VDF-TrFE) composite film by optimizing KNN sintering temperature

Luo

Shuai

et al. 2015

J Mater Sci: Mater Electron

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Dielectric and Pyroelectric Properties of Ferroelectric SBN–PVDF Composites Prepared by Hot‐Uniaxial Press

Cited by 6 publications

References 22 publications

Perspective and Developments in Composite Films Combining Lead-Free Ferroelectric Ceramic and PVDF for Energy Storage Capacitors

Perspective and Developments in Composite Films Combining Lead-Free Ferroelectric Ceramic and PVDF for Energy Storage Capacitors

Increment of dielectric constant in binary composite based on PVDF/clay system

Enhanced pyroelectric properties of lead free KNN/P(VDF-TrFE) composite film by optimizing KNN sintering temperature

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