151 resources related to Polymer foams
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2014 IEEE 15th International Symposium on Electrets ISE 15
Electrets and related phenomena continue to receive much interest both from the fundamentaland applied points of views. Charge storage in insulators is crucial for many applications, involves a wide range of materials (organic, inorganic, hybrid, powder, thin & thick films, bulk, porous, …) and, hence, is at the frontier of many scientific domains.The ISE is therefore a unique meeting opportunity for scientists and engineers from all over the world working in the field of electrical engineering, materials science and engineering, condensed matter physics and chemistry, and a chance for communicating about recent advances and research and development efforts in these areas. It also provides a forum for in-depth discussions between the most experienced and established scientists and engineers and young researchers.
2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena - (CEIDP 2014)
Topics of interest to the Conference include: Aging, Bio-dielectrics, Charge storage and transport, Electro-hydrodynamics, Flow electrification, High-field effects, High frequency dielectric phenomena, Measurement techniques, Nano-dielectrics, Outdoor insulation, Partial discharge measurements, Polarization phenomena, Pre-breakdown and breakdown in solids, liquids, gases, and vacuum, Surface flashover, Treeing, and Cryogenic dielectrics
This conference is directed towards those who develop, test or use electrical insulation in electrical equipment.
To provide a forum for in-depth investigations and interdisciplinary discussions involving design, modeling, testing, micromachining, microfabrication, integration and packaging of structures, devices and systems.
2010 International Conference on E-Product E-Service and E-Entertainment (ICEEE 2010)
ICEEE is a distinguished forum for advances in research and technologies that drive innovation in E-Product, E-Service and E-Entertainment and their applications. At ICEEE, academics and practitioners gather to discuss challenges and achievements from diverse perspectives, in a comfortable and effective single track conference format.
Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control was the number-three journal in acoustics in 2002, according to the annual Journal Citation Report (2002 edition) published by the Institute for Scientific Information. This publication focuses on the theory, design, and application on generation, transmission, and detection of bulk and surface mechanical waves; fundamental studies in physical acoustics; design of sonic ...
Xunlin Qiu; Werner Wirges; Reimund Gerhard; Ruy Alberto Pisani Altafim 2016 IEEE International Conference on Dielectrics (ICD), 2016
Polymer foams and polymer-film systems with internal cavities are highly compressible, at least in certain direction(s). Their Young's moduli can be several orders of magnitude lower than those of the respective non-porous (essentially cavity-free) materials. Thus, polymer foams and polymer systems with cavities easily deform when the external pressure varies. The capacitance changes noticeably as a result of the sample ...
Junjia Ding; Rongzhou Gong; Linyun Liu; Liang Chang; Xin Guo; Rong Yang 2008 World Automation Congress, 2008
The fiber-filled composites exhibit a great variety of dielectric dispersion behaviors in some papers. To tailor their dielectric dispersion, we must find out more details on fiber-filled composites. For this purpose, the electromagnetic properties of conducting fiber-foam composites are studied in this paper in terms of the effective-medium theory for conducting stick composites (EMTSC). Polymer foams have many attractive features ...
T. M. Andritsch; A. Lunding; P. H. F. Morshuis; H. Negle; J. J. Smit 2007 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, 2007
Syntactic foam is a lightweight composite consisting of hollow particles embedded in a polymer resin matrix. In this paper, results are presented of dielectric spectroscopy measurements on test specimens of syntactic foam with glass micro-spheres partially filled with SO2 . This type of syntactic foam is intended to be used as a high performance insulating material for lightweight high-voltage DC ...
U. Fromm; Li Ming; T. Schutte; L. Walfridsson; A. Kron; R. Liu; D. Windmar Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on, 1998
For an improved design of high voltage apparatus a material with a low dielectric constant and a relatively high breakdown strength is advantageous. Therefore the insulating properties of polymer foam with closed pores are investigated. It was found, that for a foam with closed gas filled spheres the breakdown voltage is close to the partial discharge inception voltage and it ...
Reiyu Chein; Hsiharng Yang; Tsung-Hsun Tsai; Chijay Lu 2009 Symposium on Design, Test, Integration & Packaging of MEMS/MOEMS, 2009
In this study, performance of heat sinks using the copper foams as heat- sinking material is investigated experimentally. The copper foam is fabricated by electroplating technique using polymer foam with pre-coated silver film as the precursors. The manufactured copper foams have the porosity, pore density (pore per inch, PPI), permeability and inertial coefficient in the ranges of 0.5~0.8, 10~40, 0.6~ ...
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on, 2010
A study of density and glue distributions in polymer foam models for lost foam casting processes is reported. THz-pulse measurements were compared with destructive measurements according to the principle of buoyancy-floating method to guarantee high quality standards in lost foam casting processes.
Antennas and Propagation Conference (LAPC), 2014 Loughborough, 2014
This paper presents a topology for improving the performance of straight wedge absorbing materials at oblique angles of incidence. The optimization process is based on a genetic algorithm and allows one to obtain a low reflection coefficient within a wide band of frequencies. We investigate the performance by comparison between the straight wedge absorber and the optimized wedge absorber. These ...
Sensors Journal, IEEE, 2006
Polymer sheets with foamed, multilayered, compounded, and perforated structures are in great demand for various applications, such as liquid- crystal displays, secondary cells, and electronic circuit devices. A system with magnetic and optical sensing is developed to accurately measure the thickness of polymer sheets during manufacturing. Use of a calibration gauge drastically improves precision of sheet-thickness measurement without the need ...
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific, 2010
Because the oil is a kind of non-renewable resource, it is essential to enhance the oil recovery of the developed oil fields. Usually, as the remaining potential for exploitation of oil field after the secondary oil recovery is nearly 60% ~ 70%, so the tertiary recovery is always the subject of research for the petroleum experts around the world. Polymer ...
Electrical Insulation, 2008. ISEI 2008. Conference Record of the 2008 IEEE International Symposium on, 2008
Syntactic foam is a special kind of composite material. It usually consists of a polymer matrix (called binder) and hollow spherical particles with a diameter in the range of 20 - 120 mum (microspheres) which are mixed into the binder. Due to the gas in the microspheres, the material structure of syntactic foam is similar to a foamed polymer which ...
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