Improving the Dielectric Properties of High Density Polyethylene by Incorporating Clay-Nanofiller

Abstract

Polymer nanocomposites have been used for various important industrial applications. The preparation of high density polyethylene composed with Na-montmorillonite nanofiller using melt compounding method for different concentrations of clay-nanofiller of 0%, 2%, 6%, 10%, and 15% has been successfully done. The morphology of the obtained samples was optimized and characterized by scanning electron microscope showing the formation of the polymer nanocomposites. The thermal stability and dielectric properties were measured for the prepared samples. Thermal gravimetric analysis results show that thermal stability in polymer nanocomposites is more than that in the base polymer. It has been shown that the polymer nanocomposites exhibit some very different dielectric characteristics when compared to the base polymer. The dielectric breakdown strength is enhanced by the addition of clay-nanofiller. The dielectric constant (εr) and dissipation factor (Tan δ) have been studied in the frequency range 200 Hz to 2 MHz at room temperature indicating that enhancements have been occurred in εr and Tan δ by the addition of clay-nanofiller in the polymer material when compared with the pure material.

Investigation of thermal and dielectric properties of Fe3O4/high-density polyethylene nanocomposites

“…Therefore, the term of nanodielectrics for these type of materials is increasingly becoming popular. 27 The Fe 3 O 4 /HDPE nanocomposites show improved dielectric properties compared with pristine HDPE, which can be very interesting for applications in the electrical insulation industries.…”

“…Results of these works have been confirmed that dielectric properties improvement can be occurred in polymer nanocomposites compared to the results acquired from pure polymer and polymer microcomposite. 27,28 Nelson and Ma reported nano-TiO 2 filled polyethylene and epoxy composites shown an increasement in dielectric strength and a reduction in space change compared to polyethylene and epoxy in which filled with micron size TiO 2 , respectively. 29,30 Furthermore, the crystallization studies of HDPE with nanofillers have been reported by several researches.…”

Dielectric Behavior of Nano Lead - Nano Copper oxides Polyvinyl Chloride (PVC) Composites

“…Where, έ and ε˝ are the relative permittivity (or dielectric constant) and dielectric loss, respectively, is the applied frequency in Hertz, R and C are the measured resistance and capacitance values of the whole specimen, A is the cross-sectional area of the measured surface, and d is the thickness of the specimen in the direction of measurement [12]. During the test, the data were recorded across the entire frequency spectrum of measurement from 42 Hz to 8 MHz and after calculating the values of the dielectric constant, the dielectric loss, the conductivity, and loss factor, a graph between each of these parameters (on the Y-axis) against log frequency (on X-axis) was plotted to investigate the dielectric property's dependence upon frequency.…”

Influence of Uv Radiation on Dielectric Absorption and Dielectric Strength of Halloysite Nanotubes Filled Polyethylene Composites

“…In addition to the influence of the thermal field (including the extreme case of combustion in connection with the fire retardancy), the solving of a interaction with electric field in the case of application of the composite polyethylene/HNT as a conductor insulation and the solving of effects of weather in the case of application of the composite polyethylene/HNT as a cable sheathing are important. The influence of the electric field on composites with clay filler may be described, e.g., according to [4,5] and the effects of weather, especially the UV component of sunlight, has already been mentioned, e.g., in [6]. In particular, the effect of UV radiation on dielectric properties of the polyethylene/HNT composite still does not explore so much and therefore this topic is discussed here.…”