Download or read book Ferroelectric and Piezoelectric Properties of Nylon 11 Poly Vinylidene Fluoride Bilaminate Films written by and published by . This book was released on 1994 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ferroelectric and piezoelectric properties of a new class of polymer ferroelectric and piezoelectric materials, nylon 11/polyvinyi lidene fluoride (PVF2) bilaminate films, prepared by a co-melt-pressing method, is presented. The bilaminate films exhibit typical ferroelectric D-E hysteresis behavior with a remanent polarization, P(sub r), of about 75 mC/sq m, which is higher than the value of 52 mC/sq m observed for PVF2 or nylon 11 films measured under the same conditions. The coercive field, E(sub c), of the bilaminate films is approx. 78 Mv/m which is higher than that of either PVF2 or nylon 11 films. Measurements of the temperature dependence of the piezoelectric strain coefficient, d31, and the piezoelectric stress coefficient, e31, were also carried out. The bilaminate films exhibit a piezoelectric strain coefficient, d31, of 41 pC/N at room temperature, which is significantly higher than the PVF2 films (25 pC/N) and the nylon 11 films (3.1 pC/N). jg.
Download or read book Piezoelectric and Acoustic Materials for Transducer Applications written by Ahmad Safari and published by Springer Science & Business Media. This book was released on 2008-09-11 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book discusses the underlying physical principles of piezoelectric materials, important properties of ferroelectric/piezoelectric materials used in today’s transducer technology, and the principles used in transducer design. It provides examples of a wide range of applications of such materials along with the appertaining rationales. With contributions from distinguished researchers, this is a comprehensive reference on all the pertinent aspects of piezoelectric materials.
Download or read book Ferroelectric and Piezoelectric Properties of Odd Numbered Nylons written by and published by . This book was released on 1992 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent discoveries in our laboratory of a new class of ferroelectric polymers--the odd-numbered nylons--led to another important discovery: a mechanism for the stabilization of the remanent polarization in these materials to their crystalline melting point. As the piezoelectric response of ferroelectric polymers is as stable as their remanent polarization, we have produced a set of high temperature stable piezoelectric polymers which can easily operate in a temperature range up to approximately 250 deg C. in addition, vie have now begun to examine new types of piezoelectric polymer films consisting of co-electroprocessed layers of odd-numbered nylon film and poly(vinylidene fluoride) PVF film, which are shown to exhibit a significantly enhanced response, compared to that of either component. Enhanced response is also observed for blended powders of PVF 2 and a copolymer of vinylidene fluoride and tri-fluoroethylene.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Electroactivity in Polymeric Materials written by Lenore Rasmussen and published by Springer Science & Business Media. This book was released on 2012-03-02 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroactivity in Polymeric Materials provides an in-depth view of the theory of electroactivity and explores exactly how and why various electroactive phenomena occur. The book explains the theory behind electroactive bending (including ion-polymer-metal-composites –IPMCs), dielectric elastomers, electroactive contraction, and electroactive contraction-expansion cycles. The book also balances theory with applications – how electroactivity can be used – drawing inspiration from the manmade mechanical world and the natural world around us.
Download or read book Effect of Water Content on the Piezoelectric Properties of Nylon 11 and Nylon 7 written by B. A. Newman and published by . This book was released on 1988 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of the piezoelectric properties of odd numbered nylons such as nylon 11 and nylon 7 are important, not only in their own right, but because they provide a way to examine the generality of concepts put forward to explain the piezoelectric and pyroelectric properties of poly(vinylidene fluoride) films. Over the past several years, A series of studies of nylon 11 and nylon 7 have been carried out. In a recent study appropriate sample preparation and poling techniques were described, which gave rise to mechanically unoriented but polarized films of nylon 11 with values of the piezoelectric strain coefficient, d31, as high as 7.1 pc/N. It is now understood that bulk polarization in poly(vinylidene fluoride) results from oriented dipoles in the crystalline regions, which may be caused by a ferroelectric switching process, phase transformations occurring during the poling process, or as a result of biased crystallization under high electric fields. The results of some of the studies on nylon 11 and nylon 7 are not easily understood using these concepts. (jes).
Download or read book Electroactive Polymer EAP Actuators as Artificial Muscles written by Yoseph Bar-Cohen and published by SPIE Press. This book was released on 2004 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the field of EAP with attention to all aspects and full infrastructure, including the available materials, analytical models, processing techniques, and characterization methods. This second edition covers advances in EAP in electric EAP, electroactive polymer gels, ionomeric polymer-metal composites, and carbon nanotube actuators.
Download or read book Polymers in Organic Electronics written by Sulaiman Khalifeh and published by Elsevier. This book was released on 2020-04-01 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers in Organic Electronics: Polymer Selection for Electronic, Mechatronic, and Optoelectronic Systems provides readers with vital data, guidelines, and techniques for optimally designing organic electronic systems using novel polymers. The book classifies polymer families, types, complexes, composites, nanocomposites, compounds, and small molecules while also providing an introduction to the fundamental principles of polymers and electronics. Features information on concepts and optimized types of electronics and a classification system of electronic polymers, including piezoelectric and pyroelectric, optoelectronic, mechatronic, organic electronic complexes, and more. The book is designed to help readers select the optimized material for structuring their organic electronic system.Chapters discuss the most common properties of electronic polymers, methods of optimization, and polymeric-structured printed circuit boards. The polymeric structures of optoelectronics and photonics are covered and the book concludes with a chapter emphasizing the importance of polymeric structures for packaging of electronic devices. Provides key identifying details on a range of polymers, micro-polymers, nano-polymers, resins, hydrocarbons, and oligomers Covers the most common electrical, electronic, and optical properties of electronic polymers Describes the underlying theories on the mechanics of polymer conductivity Discusses polymeric structured printed circuit boards, including their rapid prototyping and optimizing their polymeric structures Shows optimization methods for both polymeric structures of organic active electronic components and organic passive electronic components
Download or read book Papers Presented at the Meeting written by American Chemical Society. Division of Polymer Chemistry and published by . This book was released on 1996 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pyroelectricity and Piezoelectricity in Nylon 11 written by Morton H. Litt and published by . This book was released on 1976 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pyroelectric and piezoelectric properties of poly(vinylidene fluoride) have been widely reported in the literature. Investigations on similar properties in other classes of polymers have been relatively restricted. This paper describes preliminary pyroelectric and piezoelectric results obtained with commercial films of Nylon 11. The results of dielectric constant measurements in the temperature range of 20C-130C are also presented. Nylon 11 films show quite high pyroelectricity and the evidence indicates that there is probably dipole orientation in crystalline regions. Charge injection or volume polarization, as well as dipole orientation was shown to contribute to the pyroelectricity unless the sample was thoroughly relaxed.
Download or read book Proceedings written by and published by . This book was released on 2005 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1995-11 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electroactive Polymers for Robotic Applications written by Kwang J. Kim and published by Springer Science & Business Media. This book was released on 2007-01-17 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamental properties, modeling, and demonstration of Electroactive polymers in robotic applications. It particularly details artificial muscles and sensors. In addition, the book discusses the properties and uses in robotics applications of ionic polymer–metal composite actuators and dielectric elastomers.
Download or read book Electroactive Polymeric Materials written by Inamuddin and published by CRC Press. This book was released on 2022-04-28 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroactive polymers are smart materials that can undergo size or shape structural deformations in the presence of an electrical field. These lightweight polymeric materials possess properties such as flexibility, cost-effectiveness, rapid response time, easy controllability (especially physical to electrical), and low power consumption. Electroactive Polymeric Materials examines the history, progress, synthesis, and characterization of electroactive polymers and then details their application and potential in fields including biomedical science, environmental remediation, renewable energy, robotics, sensors and textiles. Highlighting the flexibility, lightweight, cost-effective, rapid response time, easy controllability, and low power consumption characteristics of electroactive polymers, respected authors in the field explore their use in sensors, actuators, MEMS, biomedical apparatus, energy storage, packaging, textiles, and corrosion protection to provide readers with a powerhouse of a reference to use for their own endeavors. Features: Explores the most recent advances in all categories of ionic/electroactive polymer composite materials Includes basic science, addresses novel topics, and covers multifunctional applications in one resource Suitable for newcomers, academicians, scientists and R&D industrial experts working in polymer technologies .
Download or read book Encyclopedia of Chemical Technology Pigments to powders handling written by Raymond Eller Kirk and published by Wiley-Interscience. This book was released on 1991 with total page 1184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains a library of information for the chemical industry. The 4th edition has undergone a complete revision, with the inclusion of many new subjects which reflect the growth in chemical technology through the 1990s. The book includes expanded coverage of biotechnology and materials science.
Download or read book Maro Polymer Notes written by and published by . This book was released on 1995 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Applications of Ferroelectric Polymers written by T. T. Wang and published by . This book was released on 1988 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
