Results 41 to 50 of about 3,272,174 (382)

Optimization Studies on Improving the Dielectric Properties of Alkali Treated Fibers from Phaseolus Vulgaris Reinforced Polyester Composites by Central Composite Design

open access: yesJournal of Natural Fibers, 2021
This study investigates the dielectric efficiency of a composite prepared using a fiber extracted from Phaseolus vulgaris. The extraction of fiber was statistically modeled using face-centered central composite design.
B. Gurukarthik Babu   +5 more
doaj   +1 more source

On the dielectric strength of mixed crystals [PDF]

open access: yesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1941
On the basis of the author’s theory of dielectric breakdown, a quantitative calculation of the increase of the breakdown strength of ionic crystals due to the admixture of foreign atoms is carried out. Satisfactory agreement with von Hippel’s experimental values is obtained. Furthermore, it is shown that F 2
openaire   +2 more sources

Dielectric and Thermal Properties of Carrot Fibers –Epoxy Composites [PDF]

open access: yesEngineering and Technology Journal, 2011
Epoxy composites were prepared with two sizes of carrot fibers in different weight percent (10%, 20%, 30% and 40%) by hand lay-up technique. The dielectric constant and dissipation factor (tanä) of pure epoxy resin and composites were measured in a ...
Wafaa A. Hussain
doaj   +1 more source

Influence of Space Charge on Dielectric Property and Breakdown Strength of Polypropylene Dielectrics under Strong Electric Field

open access: yesEnergies, 2022
Space charge accumulation in polypropylene (PP) affect the dielectric properties and breakdown strength of the material. The pre-injected charge in PP under the action of different polarity voltage is quantitatively characterized, and the effects of the ...
Zhaoliang Xing   +6 more
doaj   +1 more source

Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers

open access: yesEnergies, 2020
The dielectric strength and gel time of epoxy composites vary with the mixing ratio of epoxy resin, hardener, additives, filler, etc., and especially the gel time affects the productivity and economics of ultra-high-voltage (UHV) equipment.
Dong-Hun Oh   +5 more
doaj   +1 more source

Statistical Investigation of AC Dielectric Strength of Natural Ester Oil-Based Fe3O4, Al2O3, and SiO2 Nano-Fluids

open access: yesIEEE Access, 2019
This paper deals with the effects of conductive and insulating nanoparticles at various sizes and concentrations on the ac dielectric strength of natural ester oil, namely, MIDEL 1204.
U. Khaled, A. Beroual
semanticscholar   +1 more source

Determination of Dielectric Functions and Exciton Oscillator Strength of Two-Dimensional Hybrid Perovskites [PDF]

open access: yesACS Materials Letters, 2020
Two-dimensional (2D) hybrid organic inorganic perovskite (HOIP) semiconductors have attracted widespread attention as a platform of next generation optoelectronic devices benefiting from their naturally occurring and tunable multiple quantum-well like ...
Baokun Song   +12 more
semanticscholar   +1 more source

A Study of Some Mechanical and Physical Properties for Palm Fiber/Polyester Composite [PDF]

open access: yesEngineering and Technology Journal, 2020
This research has been done by reinforcing the matrix (unsaturated polyester) resin with natural material (date palm fiber (DPF)). The fibers were exposure to alkali treatment before reinforcement.
Samah Hussein
doaj   +1 more source

Local dielectric spectroscopy of near-surface glassy polymer dynamics

open access: yes, 2007
A non-contact scanning-probe-microscopy method was used to probe local near-surface dielectric susceptibility and dielectric relaxation in poly-vinyl-acetate (PVAc) near the glass transition.
Crider, P. S.   +4 more
core   +1 more source

3. Remarks on Dielectric Strength [PDF]

open access: yesProceedings of the Royal Society of Edinburgh, 1882
The phenomena accompanying the disruptive discharge of electricity are, in the present state of electric science, among the most interesting known, because they are the least understood, and, so far as we know, the least concordant with our preconceived ideas. The simplest way of representing the facts is to imagine with Faraday that the non-conducting
openaire   +2 more sources

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