Mechanisms of Dielectric Loss in Insulating Materials

2016 ◽  
Author(s):  
A.K. Tagantsev
Keyword(s):  
Dielectric Loss ◽  
Insulating Materials

scholarly journals Experimental Dielectric Measurements for Cost-fewer Polyvinyl Chloride Nanocomposites

2015 ◽  
Vol 5 (1) ◽  
pp. 13 ◽  
Author(s):  
Ahmed Thabet ◽  
Youssef Mobarak
Keyword(s):  
Dielectric Loss ◽  
Polymer Nanocomposites ◽  
Polyvinyl Chloride ◽  
Fumed Silica ◽  
Nanocomposite Materials ◽  
Power Cables ◽  
Dielectric Measurements ◽  
Insulating Materials ◽  
Composite Systems ◽  
Host Polymer

<span>Polymer nanocomposites possess promising high performances as engineering materials, if they are prepared and fabricated properly. In this research, it has been processed samples of nanocomposite polymers as electrical insulating materials for application on the electric power cables by using the latest techniques of nanotechnology. This paper has been investigated enhanced dielectric and electrical properties of Polyvinyl chloride PVC as matrix have shown that trapping properties are highly modified by the presence of costless nanofillers clay and fumed silica. An experimental work for dielectric loss and capacitance of the new nanocomposite materials have been investigated and compared with unfilled industrial materials. It is found that a good correlation exists in respect of capacitance and dielectric loss values measured with percentage of nanofillers. Thus, it has been investigated the influence of costless nanofillers material and its concentration on dielectric properties of industrial polymers-based composite systems. A comparative study is performed between the unfilled base polymers, the systems containing one type of nanoparticles clay<em><span> </span></em>or fumed silica inside the host polymer with various concentrations.</span>

Characteristic Analysis and Measurement of Dielectric Loss in Non-Linear Insulating Materials

2014 ◽  
Vol 986-987 ◽  
pp. 1471-1476
Author(s):  
Rong Xia
Keyword(s):  
Dielectric Loss ◽  
Simulation Analysis ◽  
Ac Loss ◽  
Measuring System ◽  
Characteristic Analysis ◽  
Insulating Materials ◽  
Xlpe Cable ◽  
Stator Windings ◽  
Non Linear ◽  
The Difference

Non-linear insulating material is widely used in the insulations of XLPE cable terminations and stator windings insulation of electric machines, and has obvious capability to improve the distribution of electric field. Actually, the dielectric loss factor of non-linear insulating materials is not equal to the tanδ describing linear insulating materials, and depends on applied voltage and their structures. This paper firstly discusses the difference between ac loss characteristic of non-linear dielectrics and linear dielectrics and presents a kind model of non-linear composite material. Based on the model, specific characterization and measurement methods and their numeric simulation analysis are given. Finally, a measuring system for non-linear insulating materials based on digital measuring technology is presented.

MECHANICAL AND DIELECTRIC LOSS SPECTRA OF AMBERS

1985 ◽  
Vol 46 (C10) ◽  
pp. C10-565-C10-568
Author(s):  
M. WELLER ◽  
C. A. WERT ◽  
D. SCHLEE
Keyword(s):  
Dielectric Loss

Charging of Insulating Materials on Satellite in Geostationary Orbit Environment

1998 ◽  
Vol 118 (7-8) ◽  
pp. 759-766 ◽  
Author(s):  
Sanju Hiro ◽  
Haruhisa Fujii ◽  
Toshio Abe ◽  
Hironobu Nishimoto
Keyword(s):  
Geostationary Orbit ◽  
Insulating Materials

COMPUTER MODELING OF THE STRUCTURE OF FOREST DRYING CHAMBERS, REDUCING HEAT LOSS

2020 ◽  
Vol 2020 (4) ◽  
pp. 60-67
Author(s):  
Boris Pruss ◽  
Viktor Romanov ◽  
Yaroslav Prozorov ◽  
Olga Pleskacheva
Keyword(s):  
Computer Modeling ◽  
Heat Loss ◽  
Heat Losses ◽  
Heat Energy ◽  
Insulating Materials ◽  
Sawn Timber ◽  
Drying Chamber

The paper presents the theory of calculating heat loss through the fences of timber drying chambers. The software for computer modeling of the process of transferring heat energy through the fences of the drying chamber, consisting of various heat-insulating materials, for calculating heat losses during drying of sawn timber is described. The efficiency of the use of modern heat-insulating materials to reduce heat losses during drying of sawn timber has been experimentally confirmed.

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