Electrical, dielectric, and electromagnetic shielding properties of polypropylene‐graphite composites

  title={Electrical, dielectric, and electromagnetic shielding properties of polypropylene‐graphite composites},
  author={Varij Panwar and Jong-Oh Park and Sukho Park and Sanjeev Kumar and Ram Mohan Mehra},
  journal={Journal of Applied Polymer Science},
The conducting polymer composite material is desired to have a high dielectric constant and high dissi- pation factor in low and high frequency ranges, so that it can be used in charge storing devices, decoupling capaci- tors, and electromagnetic interference (EMI) shielding appli- cations. Currently, on-going research is trying to enhance the dielectric constant of ceramic powder-polymer, metal powder-polymer, and nanotube-polymer composites in the low frequency region. In this article, we… 

Electric Conductivity and Dielectric Dispersion of Polyvinylchloride–Graphite Composites

The dielectric properties of polyvinylchloride–graphite composites in a wide range of temperatures (20–150°C) and frequencies (25–106 Hz) have been described and analyzed. Polyvinylchloride–graphite

A review on electrically conductive polypropylene and polyethylene

Conductive plastics are new generation functional materials with potential application in electronics, space and aviation industries. Polypropylene (PP) and polyethylene (PE) being most common,

Dielectric, AC conductivity and electromagnetic interference shielding behavior of graphite oxide/polyvinylpyrrolidone composites

Graphite oxide (GrO) was prepared using graphite powder by Hummers technique. GrO was characterized by X-ray diffraction analysis and the scanning electron microscopy analysis. Frequency dependence

ize Effects in Electrical Properties of Carbon-Polypropylene Composites

The temperature dependences of the resistance, current-voltage characteristics, and dielectric spectra of composites based on polypropylene and fillers made of microand nano-sized carbon particles

Development of polyvinylidene fluoride–graphite composites as an alternate material for electromagnetic shielding applications

Polyvinylidene fluoride (PVDF)-graphite composites have been developed using solution mixing with uniform dispersion of micro-fillers within the PVDF polymer matrix for electromagnetic interference

Sodium meta silicate doped PPy and PT composites with giant dielectric constant

In recent years, scientists have focused on searching new dielectric materials due to increasing necessity of high dielectric constant materials for microelectronic applications. Especially,

Structural, dielectric, ac conductivity and electromagnetic shielding properties of polyaniline/Ni0.5Zn0.5Fe2O4 composites

A conducting polymer, polyaniline (PANI)/Ni0.5Zn0.5Fe2O4 composites with high dielectric absorbing properties and electromagnetic shielding effectiveness at low frequencies were successfully



Finite difference simulations of permittivity and electric field statistics in ceramic-polymer composites for capacitor applications

Finite difference quasielectrostatic modeling is used to predict the complex dielectric permittivity of barium titanium oxide (BTO)—polymer composites of interest for capacitor applications. The

High-dielectric-constant ceramic-powder polymer composites

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. The experimental data show that the

Material characterization of high dielectric constant polymer-ceramic composite for embedded capacitor to RF application

  • Y. RaoJ. YueC. Wong
  • Materials Science
    Proceedings International Symposium on Advanced Packaging Materials Processes, Properties and Interfaces (IEEE Cat. No.01TH8562)
  • 2001
Embedded capacitor technology can improve electrical performance and reduce assembly cost compared with traditional discrete capacitor technology. Polymer-ceramic composites have been of great

Percolation phenomena in polymers containing dispersed iron

Metal-polymer composites based on polyethylene (PE), polyoxymethylene (POM), polyamide (PA) and a PE/POM blend as matrix and dispersed iron (Fe) as filler have been prepared by extrusion of the

Study of prelocalized graphite/styrene acrylonitrile conducting composites for device applications

Conductive polymer composites were prepared by compression molding of prelocalized graphite on to styrene acrylonitrile (SAN) particles. The electrical conductivity is found to be strongly dependent

Synthesis and dielectric properties of novel high-K polymer composites containing in-situ formed silver nanoparticles for embedded capacitor applications

Dielectric properties of in-situ formed silver (Ag) incorporated carbon black (CB)/polymer composites were studied. In-situ formed Ag nanoparticles in the Ag/CB/epoxy composites increased the

Reversible nonlinear conduction behavior for high‐density polyethylene/graphite powder composites near the percolation threshold

The reversible nonlinear conduction (RNC) behavior of high-density polyethylene/graphite powder composites with various graphite powder volume concentrations slightly above the threshold has been

A metal–polymer composite with unusual properties

Electrically conductive composites that contain conductive filler dispersed in an insulating polymer matrix are usually prepared by the vigorous mixing of the components. This affects the structure