Polymer–Ceramic Composites for Microwave Applications

Ratheesh, R.; Sebastian, Mailadil Thomas

doi:10.1002/9781119208549.ch11

Cited by 10 publications

(28 citation statements)

References 118 publications

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“…The relative permittivity (dielectric constant) of a material is related to its capacity of energy storage, when a potential is applied across it. The energy density stored in a material is related to the macroscopic property called the polarization [9]. The energy density ( ) stored in a dielectric material is governed by the applied electric field ( ) and electric displacement ( ) as, =…”

Section: Theoretical Models For Compositesmentioning

confidence: 99%

“…Particles of certain size and shape have clearance (matrix material) between neighbouring particles below the percolation threshold. The mean percolation threshold depends on the shape and size distributions of particles [9]. For conductive fillers, the percolation is defined as a change in the dispersion state of the conducting phase of a composite.…”

Section: ∫︁mentioning

confidence: 99%

“…Moreover, some mixing equations have a stronger empirical background. When the effective dielectric constant and volume fractions of individual constituents are measurable, then the properties of the material components can be derived using some mixing equations [9,23].…”

Section: ∫︁mentioning

confidence: 99%

“…Change in the conductivity of a filler in the matrix at various loading levels rial, the interspatial relationships are described by the concept of connectivity which affects all properties of the composites. The filler dimension, interfacial properties, percolation threshold, and porosity affect the properties of composites [5,9,10]. Therefore, different factors are considered, while designing the composite material such as a matrix polymer, filler, size and shape of a filler, surface treatment of filler, hybridization of a filler, synthesis method, etc.…”

Section: Introductionmentioning

confidence: 99%

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Polymer Composites with Improved Dielectric Properties: A Review

Ghule

Laad

2021

Ukr. J. Phys.

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Materials exhibiting high dielectric constant (k) values find applications in capacitors, gate dielectrics, dielectric elastomers, energy storage device, while materials with low dielectric constant are required in electronic packaging and other such applications. Traditionally, high k value materials are associated with high dielectric losses, frequency-dependent dielectric behavior, and high loading of a filler. Materials with low k possess a low thermal conductivity. This creates the new challenges in the development of dielectric materials in both kinds of applications. Use of high dielectric constant filler materials increases the dielectric constant. In this study,the factors affecting the dielectric constant and the dielectric strength of polymer composites are explored. The present work aims to study the effect of various parameters affecting the dielectric properties of the materials. The factors selected in this study are the type of a polymer, type of a filler material used, size, shape, loading level and surface modification of a filler material, and method of preparation of the polymer composites. The study is focused on the dielectric enhancement of polymer nanocomposites used in the field of energy storage devices. The results show that the core-shell structured approach for high dielectric constant materials incorporated in a polymer matrix improves the dielectric constant of the polymer composite.

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Section: Theoretical Models For Compositesmentioning

confidence: 99%

Section: ∫︁mentioning

confidence: 99%

Section: ∫︁mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polymer Composites with Improved Dielectric Properties: A Review

Ghule

Laad

2021

Ukr. J. Phys.

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“…Recently, Jobin et al 18 reported microwave dielectric properties of zirconium silicate mineral-filled HDPE composites for microwave applications. 19,20 Further, natural silica filled epoxy composites for electronic packaging applications were investigated by Teh et al 21 There were no reports on any types of garnet mineral for their use in electronic applications. For the complete understanding of physical properties, a comprehensive structural analysis is required.…”

Section: -16mentioning

confidence: 99%