37 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 fundamental and 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, materi
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 ...
Pen-Cheng Wang; Wei-Keng Lin; Sz-Yuan Hung; Hsueh-Ju Lu Microsystems, Packaging, Assembly and Circuits Technology Conference (IMPACT), 2011 6th International, 2011
Pressure-dependent variable resistors were fabricated by coating conducting polymer thin films on the interior surfaces of porous polyurethane (PU) foams with thickness ranging from 1 mm to 5 mm. To coat conducting polymer thin films on the interior surfaces of the porous PU foams, the PU foams were first immersed in 1 M aqueous camphorsulfonic acid (HCSA) solution containing 0.44 ...
Shan Wenwen; Jiang Weifen E-Product E-Service and E-Entertainment (ICEEE), 2010 International Conference on, 2010
In the preparation of low density foam in small size systems like a capillary, the concentration distribution of polymer solution will affect the density uniformity of the foams. The behavior of a solution of ideal polymers at a wall surface was investigated using self-consistent field theory (SCFT). The depletion/adsorption transition of the solution concentration distribution in confined system will occur ...
Altafim, R.A.C.; Altafim, R.A.P.; Basso, H.C.; Qiu, X.; Wirges, W.; Gerhard, R.; Jenninger, W.; Wagner, J. Electrical Insulation and Dielectric Phenomena, 2009. CEIDP '09. IEEE Conference on, 2009
Cellular polymer foams with bipolar internal space charge are known as ferro - and piezoelectrets. Light emission from the internal voids of such polymer foams during electrical charging was already reported a few years ago and allows the investigation of the underlying dielectric barrier discharges. More recently, polymeric layer structures with well-defined voids were presented as an alternative to polymer-foam ...
Wegener, M.; Tuncer, E.; Wirges, W.; Gerhard-Multhaupt, R.; Dansachmuller, M.; Bauer-Gogonea, S.; Schwodiauer, R.; Bauer, S. Ultrasonics Symposium, 2004 IEEE, 2004
Charged polymer foams show ferroelectret behavior. The anisotropy of the foamed structure can be controlled by gas-diffusion expansion. By means of well-designed void-inflation processes, the resulting dipole size is varied over a broad range. This also changes the mechanical properties, and ferroelectret foams with elastic moduli between 1 and 15 MPa can be prepared. Cellular polypropylene foams with transducer coefficients ...
Labadie, J.W.; Hedrick, J.L.; Wakharkar, V.; Hofer, D.C.; Russell, T.P. Components, Hybrids, and Manufacturing Technology, IEEE Transactions on, 1992
A method of generating high-temperature polymer foams with pore sizes in the nanometer regime was developed. The nanofoams were prepared by casting a block copolymer comprising a thermally stable and a thermally labile block, followed by a subsequent thermal treatment to degrade the labile material and generate the pores. The morphology of the block copolymer film was made up of ...
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