نتایج جستجو برای: polymer insulator

تعداد نتایج: 110173  

2013
Linxiang He Sie Chin Tjong

Graphene/polyvinylidene fluoride (PVDF) composites were prepared using in-situ solvothermal reduction of graphene oxide in the PVDF solution. The electrical conductivity of the composites was greatly improved by doping with graphene sheets. The percolation threshold of such composite was determined to be 0.31 vol.%, being much smaller than that of the composites prepared via blending reduced gr...

2010
Stephen P Bremner Sylvain G Cloutier S. Bremner S. Cloutier

Preliminary results of a Silicon-On-Insulator to polymer transfer technique capable of producing large area flexible crystalline silicon layer of thicknesses between 0.4 and 2.0 μm, are presented. Formation of a shallow pn junction using ion implantation of Phosphorus was confirmed through capacitance-voltage measurements with further analysis of these results revealing a sharp junction definit...

2010
William L. Miller

A semiconductor is a type of material which has electrical properties in between an insulator and a conductor. A conductor can be thought of as a group of atoms surrounded by a sea of free electrons, which are free to move throughout the material; in contrast, the electrons in an insulator are tightly localized on a specific atom or molecule. In a semiconductor, the electrons are localized as i...

Journal: :Journal of the Korean Institute of Electrical and Electronic Material Engineers 2007

ژورنال: مواد پرانرژی 2016

Abstract In this research, the effect of phthalate plasticizers in ethyl cellulose and ethyl cellulosesilica composite was investigated on the nitroglycerin migration from a double base propellant. In this manner, first different insulator and nanocomposite samples containing 10, 15 and 20 phr of diethyl phthalate, dibutyl phthalate and bis 2-ethylhexyl phthalate were prepared and then the dou...

2001
Jongsoo Kim Manoj K. Chaudhury Michael J. Owen Tor Orbeck

Silicone elastomers exposed to electrical discharges can be rendered hydrophilic, and the loss of water repellency is related to the energy level and number of the discharge pulses on the surface. However, the silicone surface has the unique ability to recover the hydrophobicity and enhance the performance of a polymer insulator. Most of the studies of the loss and recovery of hydrophobicity on...

Journal: :Mechanics of Materials 2022

We homogenize the mechanical properties of a two-phase polymer composite, made polyurethane matrix containing porous spherical silicone-based inclusions, and designed to be used for wave control as local resonant insulator. First we consider homogenized energy an expression obtained by explicit method. Then, couple inclusions means second-order tangent Direct finite element simulations allow so...

2010
James E. Martin

We have developed a significantly improved chemiresistor for sensing volatile organic compounds that consists of Au-coated Ni particles organized into electrically conducting pathways in a polymer matrix by a magnetic field [1]. This sensor overcomes the problems inherent to conventional carbon-black chemiresistors, while achieving an unprecedented magnitude of response. When exposed to chemica...

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