Two-layer materials of polyethylene and a carbon nanotube/cyanate ester composite with high dielectric constant and extremely low dielectric loss

Wang, Binghao; Liang, Guozheng; Jiao, Yicheng; Gu, Aijuan; Liu, Limei; Yuan, Li; Zhang, Wei

doi:10.1016/j.carbon.2012.11.033

Cited by 122 publications

(80 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Coating insulating layers on the dielectric films also can significantly improve the dielectric permittivity and breakdown strength, both of which produce a higher energy storage density. Gu and co‐workers discovered that coating an insulating microlayer on the dielectric film obviously improved the dielectric properties, because the microlayer not only hindered the conducting channel but also enhanced the polarization density . Lin et al prepared a kind of sandwich structure nanocomposite, in which a dielectric layer (NH 2 ‐CNTs)/PI nanocomposite was sandwiched by two insulating pure PI layers, as shown in the inset of Figure a.…”

Section: Cnts/polymer Dielectric Nanocompositesmentioning

confidence: 99%

1D/2D Carbon Nanomaterial‐Polymer Dielectric Composites with High Permittivity for Power Energy Storage Applications

Dang

Zheng

2016

Small

428

215

View full text Add to dashboard Cite

With the development of flexible electronic devices and large-scale energy storage technologies, functional polymer-matrix nanocomposites with high permittivity (high-k) are attracting more attention due to their ease of processing, flexibility, and low cost. The percolation effect is often used to explain the high-k characteristic of polymer composites when the conducting functional fillers are dispersed into polymers, which gives the polymer composite excellent flexibility due to the very low loading of fillers. Carbon nanotubes (CNTs) and graphene nanosheets (GNs), as one-dimensional (1D) and two-dimensional (2D) carbon nanomaterials respectively, have great potential for realizing flexible high-k dielectric nanocomposites. They are becoming more attractive for many fields, owing to their unique and excellent advantages. The progress in dielectric fields by using 1D/2D carbon nanomaterials as functional fillers in polymer composites is introduced, and the methods and mechanisms for improving dielectric properties, breakdown strength and energy storage density of their dielectric nanocomposites are examined. Achieving a uniform dispersion state of carbon nanomaterials and preventing the development of conductive networks in their polymer composites are the two main issues that still need to be solved in dielectric fields for power energy storage. Recent findings, current problems, and future perspectives are summarized.

show abstract

Section: Cnts/polymer Dielectric Nanocompositesmentioning

confidence: 99%

1D/2D Carbon Nanomaterial‐Polymer Dielectric Composites with High Permittivity for Power Energy Storage Applications

Dang

Zheng

2016

Small

428

215

View full text Add to dashboard Cite

show abstract

“…Dielectric loss is conventionally described by the ε'' or by tanδ. For a percolative system, its dielectric loss, which is closely related to the frequency and conductive filler concentration, mainly consists of the conduction loss and the interfacial polarization loss [50,51]. And the loss of electric conduction generally makes greater contribution to the dielectric loss than that of interfacial polarization at relatively low frequency[51, 52].…”

Section: Conduction and Reactancementioning

confidence: 99%

Negative permittivity behavior in the carbon/silicon nitride composites prepared by impregnation-carbonization approach

Cheng

Yan

Fan

et al. 2016

Carbon

View full text Add to dashboard Cite

“…It was found that the ɛ″ of the FGR-PR composites increased with increasing FGR content, indicating enhanced dielectric loss. Dielectric loss was mainly caused by interfacial polarization and conduction [45][46][47][48][49]. The interfacial polarization enhanced with the increasing FGR content, resulting in enhancement of interfacial polarization loss.…”

Section: Dielectric Properties Of the Fgr-pr Compositesmentioning

confidence: 99%

Magnetic negative permittivity with dielectric resonance in random Fe3O4@graphene-phenolic resin composites

Zhang

Yin

et al. 2017

Adv Compos Hybrid Mater

View full text Add to dashboard Cite

Magnetic Fe 3 O 4 @graphene-phenolic resin (FGR-PR) composites with negative permittivity were prepared by chemical coprecipitation and pressing method. Alternating current conductivity, permittivity, and permeability of the FGR-PR composites were investigated. An obvious percolation phenomenon was observed with the increase of FGR content from 84 to 91 vol%. Two types of negative permittivity attributed to the Lorentz and the Drude model, respectively, w e r e o b s e r v e d i n t h e c o m p o s i t e s . D u e t o t h e magnetocrystalline anisotropy and saturation magnetization, the real permeability enhanced from 1.17 to 4.1 with the increasing FGR content from 6 to 98 vol%. In addition, the frequency dispersion of permeability was attributed to the domain wall and the gyromagnetic spin resonance. The magnetic loss decreased firstly in the low frequency, attributing to the natural resonance, and then increased in the high frequency from the eddy current.

show abstract

Two-layer materials of polyethylene and a carbon nanotube/cyanate ester composite with high dielectric constant and extremely low dielectric loss

Cited by 122 publications

References 33 publications

1D/2D Carbon Nanomaterial‐Polymer Dielectric Composites with High Permittivity for Power Energy Storage Applications

1D/2D Carbon Nanomaterial‐Polymer Dielectric Composites with High Permittivity for Power Energy Storage Applications

Negative permittivity behavior in the carbon/silicon nitride composites prepared by impregnation-carbonization approach

Magnetic negative permittivity with dielectric resonance in random Fe3O4@graphene-phenolic resin composites

Contact Info

Product

Resources

About