Journal ArticleDOI
High Dielectric Performance of Polymer Composite Films Induced by a Percolating Interparticle Barrier Layer
TLDR
In this paper, the authors proposed a method to increase the dielectric constant of polymer-based capacitors by using conductive fillers (e.g., metal particles).Abstract:
The mechanical flexibility and tunable properties of polymer-based materials make them attractive ones for a lot of applications. Exploring polymer-based dielectrics, such as ones used for capacitors and charge-storage applications, with high dielectric constant (high-j) has recently aroused considerable interest. Especially, motivated by higher function and further miniaturization of electronics, embedding (or integrating) polymer-based capacitors into the inner layers of organic printed circuit boards (PCBs) allows packaging substrate miniaturization and better electrical performance, which is a key for organic-based system-on-package technologies. But as capacitors, the relative dielectric constant j of general polymers (being good insulators) is too low (e.g., j< 5).Thus, a key issue is to substantially raise the dielectric constant of the polymers while retaining low dielectric loss. A few strategies have been developed to raise the j of polymer-based materials. A common approach is to add high-j ceramic fillers (e.g., BaTiO3) into a polymer. High loading of the ceramic fillers in the polymer composite, usually over 50 vol %, can increase j by about ten times relative to the polymer matrix, but dramatically decreases the adhesion of the composite (and increases its porosity) thus deteriorating the adaptability between the composite and the organic circuit boards. Another strategy is to fabricate percolative composite capacitors by using conductive fillers (e.g., metal particles). As the volume fraction f of the fillers increases to the vicinity of the percolation threshold fc, j of the composites can be dramatically enhanced as described by the well-known power lawread more
Citations
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Journal ArticleDOI
Fundamentals, processes and applications of high-permittivity polymer–matrix composites
Zhi-Min Dang,Zhi-Min Dang,Zhi-Min Dang,Jinkai Yuan,Jun-Wei Zha,Tao Zhou,Shengtao Li,Guo-Hua Hu,Guo-Hua Hu +8 more
TL;DR: In this paper, the authors focus on the important role and challenges of high-k polymer-matrix composites (PMC) in new technologies and discuss potential applications of highk PMC.
Journal ArticleDOI
Recent Progress on Ferroelectric Polymer-Based Nanocomposites for High Energy Density Capacitors: Synthesis, Dielectric Properties, and Future Aspects.
TL;DR: This Review presents a comprehensive review of the use of ferroelectric polymers, especially PVDF and PVDF-based copolymers/blends as potential components in dielectric nanocomposite materials for high energy density capacitor applications.
Journal ArticleDOI
Flexible Nanodielectric Materials with High Permittivity for Power Energy Storage
TL;DR: This review first outlines the crucial issues in the nanodielectric field and then focuses on recent remarkable research developments in the fabrication of FNDMs with special constitutents, molecular structures, and microstructures.
Journal ArticleDOI
Physical Properties of Composites Near Percolation
Ce-Wen Nan,Yang Shen,Jing Ma +2 more
TL;DR: In this article, the effects of geometric factors and intrinsic properties of the fillers and the matrix on electric and dielectric properties near percolation have been discussed, and an outlook on the future possibilities and scientific challenges in the field is given.
Journal ArticleDOI
Polymer Composite and Nanocomposite Dielectric Materials for Pulse Power Energy Storage
Peter Barber,Shiva Balasubramanian,Yogesh Kumar Anguchamy,Shushan Gong,Arief Wibowo,Hongsheng Gao,Harry J. Ploehn,Hans-Conrad zur Loye +7 more
TL;DR: In this article, a review summarizes the current state of polymer composites used as dielectric materials for energy storage, focusing on materials: polymers serving as the matrix, inorganic fillers used to increase the effective dielectrics constant, and various recent investigations of functionalization of metal oxide fillers to improve compatibility with polymers.
References
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Book
Introduction to percolation theory
Dietrich Stauffer,Amnon Aharony +1 more
TL;DR: In this paper, a scaling solution for the Bethe lattice is proposed for cluster numbers and a scaling assumption for cluster number scaling assumptions for cluster radius and fractal dimension is proposed.
Book
Introduction to percolation theory
Dietrich Stauffer,Amnon Aharony +1 more
TL;DR: In this article, a scaling solution for the Bethe lattice is proposed for cluster numbers and a scaling assumption for cluster number scaling assumptions for cluster radius and fractal dimension is proposed.
Journal ArticleDOI
An all-organic composite actuator material with a high dielectric constant
TL;DR: A new class of all-organic field-type EAP composites is reported, which can exhibit high elastic energy densities induced by an electric field of only 13 V µm-1, and could find applications as artificial muscles, ‘smart skins’ for drag reduction, and in microfluidic systems for drug delivery.
Journal ArticleDOI
High-dielectric-constant ceramic-powder polymer composites
TL;DR: In this article, a ceramic-powder polymer composite, making use of a relaxor ferroelectric polymer that has a high room-temperature dielectric constant as the matrix, is developed.