The Methods of Investigation of Complex Dielectric Permittivity of Layer Polymers Containing Conductive Inclusions

1990 ◽  
Vol 214 ◽  
Author(s):  
A.A. Kalachev ◽  
I.V. Kukolev ◽  
S.M. Matitsin ◽  
L.N. Novogrudskiy ◽  
K.N. Rozanov ◽  
...  
Keyword(s):  
Composite Materials ◽  
Dielectric Permittivity ◽  
Complex Dielectric Permittivity ◽  
High Dielectric Permittivity ◽  
Mean Size ◽  
The Mean ◽  
High Dielectric

ABSTRACTA set of methods for measure complex dielectric permittivity of layer materials at microwaves is suggested. These methods allow one to measure dielectric permittivity of composite materials in with the mean size of inhomogeneities is comparable with the wavelength and materials with high dielectric permittivity.

Graphene-based composite materials with high dielectric permittivity via an in situ reduction method

2010 ◽  
Vol 208 (2) ◽  
pp. 459-461 ◽  
Author(s):  
Lili Cui ◽  
Xiaofeng Lu ◽  
Danming Chao ◽  
Hongtao Liu ◽  
Yongxin Li ◽  
...  
Keyword(s):  
Composite Materials ◽  
Dielectric Permittivity ◽  
Reduction Method ◽  
In Situ Reduction ◽  
High Dielectric Permittivity ◽  
High Dielectric

Polyimide/nanosized CaCu3Ti4O12 functional hybrid films with high dielectric permittivity

2013 ◽  
Vol 102 (4) ◽  
pp. 042904 ◽  
Author(s):  
Yang Yang ◽  
Ben-Peng Zhu ◽  
Zhi-Hong Lu ◽  
Zi-Yu Wang ◽  
Chun-Long Fei ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Hybrid Films ◽  
High Dielectric Permittivity ◽  
High Dielectric

scholarly journals Thermoplastic Polyurethane/Lead Zirconate Titanate/Carbon Nanotube Composites with Very High Dielectric Permittivity and Low Dielectric Loss

2020 ◽  
Vol 4 (3) ◽  
pp. 137
Author(s):  
Gayaneh Petrossian ◽  
Nahal Aliheidari ◽  
Amir Ameli
Keyword(s):  
Dielectric Loss ◽  
Dielectric Permittivity ◽  
Lead Zirconate Titanate ◽  
Thermoplastic Polyurethane ◽  
Lead Zirconate ◽  
Low Dielectric ◽  
High Dielectric Permittivity ◽  
Tan Δ ◽  
High Dielectric ◽  
Very High

Ternary composites of flexible thermoplastic polyurethane (TPU), lead zirconate titanate (PZT), and multiwalled carbon nanotubes (MWCNTs) with very high dielectric permittivity (εr) and low dielectric loss (tan δ) are reported. To assess the evolution of dielectric properties with the interactions between conductive and dielectric fillers, composites were designed with a range of content for PZT (0–30 vol%) and MWCNT (0–1 vol%). The microstructure was composed of PZT-rich and segregated MWCNT-rich regions, which could effectively prevent the formation of macroscopic MWCNT conductive networks and thus reduce the high ohmic loss. Therefore, εr increased by a maximum of tenfold, reaching up to 166 by the addition of up to 1 vol% MWCNT to TPU/PZT. More importantly, tan δ remained relatively unchanged at 0.06–0.08, a similar range to that of pure TPU. εr/tan δ ratio reached 2870 at TPU/30 vol% PZT/0.5 vol% MWCNT, exceeding most of the reported values. This work demonstrates the potential of three-phase polymer/conductive filler/dielectric filler composites for efficient charge storage applications.

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