A comprehensive review on dielectric composites: Classification of dielectric composites

Preparation of a novel cross‐linked polyetherimide with enhanced breakdown strength and high‐temperature energy storage performance

“…For instance, the dielectric constant decreases from 3.22 of c‐PEI‐0 to 3.18 of c‐PEI‐2 at 10 3 Hz. It is well‐known that the polarisation in polymer dielectrics mainly include electronic polarisation, ionic polarisation, dipolar polarisation and interfacial polarisation [34]. In this study, the interfacial polarisation, electronic polarisation and ionic polarisation are negligible, and the dielectric constant of the corresponding sample mainly depends on the dipole polarisation.…”

Polysulfide polyurethane–urea-based dielectric composites with CeO2-loaded MXene exhibiting high self-healing efficiency

“…Currently, increasing the dielectric constant of polymers enables the addition of ceramic fillers (such as BaTiO 3 , TiO 2 and PbZr x Ti 1Àx O 3 ). [11][12][13] Unfortunately, it is required to add a large amount of ceramic filler (usually over 50 wt%) to raise the dielectric constant of the polymer, thereby leading to an increase in the modulus of elasticity, a detrimental effect on the electromechanical conversion properties of Des. Based on the percolation theory, 14 it can be demonstrated that conductive fillers such as graphene, 15 carbon nanotubes, 16 and polyaniline 17 can be added to polymers to elevate the dielectric constant and only a small amount is required, compensating for the lack of ceramic fillers.…”

Effect of Particle Functionalization on Structural and Dielectric Properties of Flexible TPU/BaTiO3/MWCNTs Composite Films

“…Consequently, the introduction of ceramic particles into a polymer matrix is a good strategy to integrate the advantages of both materials in order to develop highly flexible composites with desired dielectric properties. [ 1 ] Numerous composites based on various polymer ferroelectric matrices, such as poly(vinylidene fluoride) (PVDF), its copolymers, and ceramic fillers with high dielectric constants, have been already developed and published. [ 2–4 ] In spite of the relatively good characteristics of the ferroelectric polymers, their poor temperature stability and high priсe were the main reasons to develop composite materials based on non‐ferroelectric polymer matrices and high dielectric constant ceramics in high loadings.…”