Download or read book Characterization of Interphases Between PMDA 4 BDAF Polyimides and Silver and Graphite Substrates Using X Ray Photoelectron Spectroscopy written by and published by . This book was released on 1991 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interfaces formed by curing the polyamic acid (PAA) of pyromellitic dianhydride (PMDA)/2,2-bis(4-(4-aminophenoxy( -phenyl)-hexa-fluoropropane (4- BDAF) polyimide against silver substrates were characterized by x-ray photoelectron spectroscopy (XPS). The C(ls) multiplex spectra of PAA films cured against thick silver films were more similar to those obtained before curing than to those for the bulk PMDA/4-BDAF polyimide, indicating that curing of the polymer was inhibited by interaction of the PAA with the silver substrate. This was evidenced by observing a peak shifted upward by 3.2 eV from the main carbon peak near 284.6 eV which consisted of two overlapping peaks characteristic of the amide and carboxylate groups. Moreover, the main peak observed near 400.4 eV in the N(1s) spectra was attributed to the amides.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 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 Government Reports Annual Index written by and published by . This book was released on 1991 with total page 1336 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 1991-10 with total page 1502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Logic Synthesis for Asynchronous Controllers and Interfaces written by J. Cortadella and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the result of a long friendship, of a broad international co operation, and of a bold dream. It is the summary of work carried out by the authors, and several other wonderful people, during more than 15 years, across 3 continents, in the course of countless meetings, workshops and discus sions. It shows that neither language nor distance can be an obstacle to close scientific cooperation, when there is unity of goals and true collaboration. When we started, we had very different approaches to handling the mys terious, almost magical world of asynchronous circuits. Some were more theo retical, some were closer to physical reality, some were driven mostly by design needs. In the end, we all shared the same belief that true Electronic Design Automation research must be solidly grounded in formal models, practically minded to avoid excessive complexity, and tested "in the field" in the form of experimental tools. The results are this book, and the CAD tool petrify. The latter can be downloaded and tried by anybody bold (or desperate) enough to tread into the clockless (but not lawless) domain of small-scale asynchronicity. The URL is http://www.lsi. upc. esr j ordic/petrify. We believe that asynchronous circuits are a wonderful object, that aban dons some of the almost militaristic law and order that governs synchronous circuits, to improve in terms of simplicity, energy efficiency and performance.
Download or read book High Performance Polymers and Their Nanocomposites written by Visakh P. M. and published by John Wiley & Sons. This book was released on 2018-11-30 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: “High Performance Polymers and Their Nanocomposites” summarizes many of the recent research accomplishments in the area of high performance polymers, such as: high performance polymers-based nanocomposites, liquid crystal polymers, polyamide 4, 6, polyamideimide, polyacrylamide, polyacrylamide-based composites for different applications, polybenzimidazole, polycyclohexylene dimethyl terephthalate, polyetheretherketone, polyetherimide, polyetherketoneketone, polyethersulfone, polyphenylene sulphide, polyphenylsulfone, polyphthalamide, Polysulfone, self-reinforced polyphenylene, thermoplastic polyimide.
Download or read book Fluoropolymers 2 written by Gareth G. Hougham and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fluorine atom, by virtue of its electronegativity, size, and bond strength with carbon, can be used to create compounds with remarkable properties. Small molecules containing fluorine have many positive impacts on everyday life of which blood substitutes, pharmaceuticals, and surface modifiers are only a few examples. Fluoropolymers, too, while traditionally associated with extreme high performance applications have found their way into our homes, our clothing, and even our language. A recent American president was often likened to the tribology of PTFE. Since the serendipitous discovery of Teflon at the DuPont Jackson Laboratory in 1938, fluoropolymers have grown steadily in technological and marketplace importance. New synthetic fluorine chemistry, new processes, and new apprecia tion of the mechanisms by which fluorine imparts exceptional properties all contribute to accelerating growth in fluoropolymers. There are many stories of harrowing close calls in the fluorine chemistry lab, especially from the early years, and synthetic challenges at times remain daunting. But, fortunately, modem techniques and facilities have enabled significant strides toward taming both the hazards and synthetic uncertainties, In contrast to past environmental problems associated with fluorocarbon refrigerants, the exceptional properties of fluorine in polymers have great environmental value. Some fluoropolymers are enabling green technologies such as hydrogen fuel cells for automobiles and oxygen selective membranes for cleaner diesel combustion.
Download or read book High Frequency Bipolar Transistors written by Michael Reisch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: This modern book-length treatment gives a detailed presentation of high-frequency bipolar transistors in silicon or silicon-germanium technology, with particular emphasis placed on today's advanced compact models and their physical foundations.
Download or read book Applied Plastics Engineering Handbook written by Myer Kutz and published by William Andrew. This book was released on 2011-07-20 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical reference for all plastics engineers who are seeking to answer a question, solve a problem, reduce a cost, improve a design or fabrication process, or even venture into a new market. Applied Plastics Engineering Handbook covers both polymer basics – helpful to bring readers quickly up to speed if they are not familiar with a particular area of plastics processing – and recent developments – enabling practitioners to discover which options best fit their requirements. Each chapter is an authoritative source of practical advice for engineers, providing authoritative guidance from experts that will lead to cost savings and process improvements. Throughout the book, the focus is on the engineering aspects of producing and using plastics. The properties of plastics are explained along with techniques for testing, measuring, enhancing and analyzing them. Practical introductions to both core topics and new developments make this work equally valuable for newly qualified plastics engineers seeking the practical rules-of-thumb they don’t teach you in school, and experienced practitioners evaluating new technologies or getting up to speed on a new field The depth and detail of the coverage of new developments enables engineers and managers to gain knowledge of, and evaluate, new technologies and materials in key growth areas such as biomaterials and nanotechnology This highly practical handbook is set apart from other references in the field, being written by engineers for an audience of engineers and providing a wealth of real-world examples, best practice guidance and rules-of-thumb
Download or read book Polymer Nanocomposites written by Aravind Dasari and published by Springer. This book was released on 2016-06-28 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This highlights ongoing research efforts on different aspects of polymer nanocomposites and explores their potentials to exhibit multi-functional properties. In this context, it addresses both fundamental and advanced concepts, while delineating the parameters and mechanisms responsible for these potentials. Aspects considered include embrittlement/toughness; wear/scratch behaviour; thermal stability and flame retardancy; barrier, electrical and thermal conductivity; and optical and magnetic properties. Further, the book was written as a coherent unit rather than a collection of chapters on different topics. As such, the results, analyses and discussions presented herein provide a guide for the development of a new class of multi-functional nanocomposites. Offering an invaluable resource for materials researchers and postgraduate students in the polymer composites field, they will also greatly benefit materials
Download or read book Fluoropolymers 1 written by Gareth G. Hougham and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fluorine atom, by virtue of its electronegativity, size, and bond strength with carbon, can be used to create compounds with remarkable properties. Small molecules containing fluorine have many positive impacts on everyday life of which blood substitutes, pharmaceuticals, and surface modifiers are only a few examples. Fluoropolymers, too, while traditionally associated with extreme hi- performance applications have found their way into our homes, our clothing, and even our language. A recent American president was often likened to the tribology of PTFE. Since the serendipitous discovery of Teflon at the Dupont Jackson Laboratory in 1938, fluoropolymers have grown steadily in technological and marketplace importance. New synthetic fluorine chemistry, new processes, and new apprec- tion of the mechanisms by which fluorine imparts exceptional properties all contribute to accelerating growth in fluoropolymers. There are many stories of harrowing close calls in the fluorine chemistry lab, especially from the early years, and synthetic challenges at times remain daunting. But, fortunately, modern techniques and facilities have enabled significant strides toward taming both the hazards and synthetic uncertainties. In contrast to past environmental problems associated with fluorocarbon refrigerants, the exceptional properties of fluorine in polymers have great environmental value. Some fluoropolymers are enabling green technologies such as hydrogen fuel cells for automobiles and oxygen-selective membranes for cleaner diesel combustion.
Download or read book Infrared and Raman Spectroscopy of Polymers written by J. L. Koenig and published by iSmithers Rapra Publishing. This book was released on 2001 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vibrational spectroscopy is advantageous as an analytical tool for polymers and comprises two complementary techniques: infrared (IR) and Raman spectroscopy. This report is an absorbing overview of how these methods can be employed to provide information about complex polymeric macromolecules with respect to composition, structure, conformation and intermolecular interactions. The review is supported by several hundred abstracts selected from the Polymer Library giving useful references for further reading.
Download or read book Nanoengineering of Structural Functional and Smart Materials written by Mark J. Schulz and published by CRC Press. This book was released on 2005-08-29 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: In chapters contributed by 24 university & government laboratories, Nanoengineering of Structural, Functional, and Smart Materials combines wide-ranging research aimed at the development of multifunctional materials that are strong, lightweight, and versatile. This book explores promising and diverse approaches to the design of nanoscale
Download or read book Adhesive Joints written by K.L. Mittal and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume documents the proceedings of the International Symposium on Adhesive Joints: Formation, Characteristics and Testing held under the auspices of the Division of Polymer Mater ials:Science and Engineering of the American Chemical Society in Kansas City, MO, September 12-17, 1982. There is a myriad of applications (ranging from aerospace to surgery) where adhesives are used to join different materials, and concomitantly the understanding of the behavior of adhesive joints becomes very important. There are many factors which can influence the behavior of adhesive joints, e.g., substrate preparation, in terfacial aspects, joint design, mode of stress, external environ ment, etc., and in order to understand the joint behavior in a holistic manner, one must take due cognizance of all these germane factors. So this symposium was planned to address not only how to make acceptable bonds but their characterization, durability and testing were also accorded due consideration.
Download or read book Handbook of Adhesion written by D. E. Packham and published by John Wiley & Sons. This book was released on 2006-02-08 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition of the successful Handbook of Adhesion provides concise and authoritative articles covering many aspects of the science and technology associated with adhesion and adhesives. It is intended to fill a gap between the necessarily simplified treatment of the student textbook and the full and thorough treatment of the research monograph and review article. The articles are structured in such a way, with internal cross-referencing and external literature references, that the reader can build up a broader and deeper understanding, as their needs require. This second edition includes many new articles covering developments which have risen in prominence in the intervening years, such as scanning probe techniques, the surface forces apparatus and the relation between adhesion and fractal surfaces. Advances in understanding polymer - polymer interdiffusion are reflected in articles drawing out the implications for adhesive bonding. In addition, articles derived from the earlier edition have been revised and updated where needed. Throughout the book there is a renewed emphasis on environmental implications of the use of adhesives and sealants. The scope of the Handbook, which features nearly 250 articles from over 60 authors, includes the background science - physics, chemistry and material science - and engineering, and also aspects of adhesion relevant to the use of adhesives, including topics such as: Sealants and mastics Paints and coatings Printing and composite materials Welding and autohesion Engineering design The Handbook of Adhesion is intended for scientists and engineers in both academia and industry, requiring an understanding of the various facets of adhesion.
Download or read book Plastic Part Design for Injection Molding written by Robert A. Malloy and published by . This book was released on 2011 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the book is to assist the designer in the development of parts that are functional, reliable, manufacturable, and aesthetically pleasing. Since injection molding is the most widely used manufacturing process for the production of plastic parts, a full understanding of the integrated design process presented is essential to achieving economic and functional design goals. Features over 425 drawings and photographs.
Download or read book Spectroscopy of Polymers written by J.L. Koenig and published by Elsevier. This book was released on 1999-09-16 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised and updated Second Edition of the best-selling reference/text is essential reading for students and scientists who seek a thorough and practical introduction to the field of polymer spectroscopy. Eleven chapters cover the fundamental aspects and experimental applications of the primary spectroscopic methods. The advantages and disadvantages of the various techniques for particular polymer systems are also discussed. The goal of the author is not to make the reader an expert in the field, but rather to provide enough information about the different spectroscopic methods that the reader can determine how the available techniques can be used to solve a particular polymer problem. This Second Edition contains new and updated information on techniques in IR and NMR, as well as an all-new chapter on Mass Spectrometry.
