The Effect of Processing Parameters on the Microwave Absorption by Polyaniline PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
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Book Description
This report examines the potential of polymer composites containing the conducting polymer polyaniline as radar absorbing materials in the X-band (microwave) frequency range. It describes the preparation of conductive thermoplastic polymethyl methacrylate (PMMA) composites containing polyaniline conductive filler under conditions that were varied in order to determine their effect on the electrical & microwave properties. The effects of sample mixing, melting temperature, heating time, amount of plasticizer, and amount of conducting polymer on the conductivity, permittivity, and microwave absorption are reported.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 17
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Book Description
This report examines the potential of polymer composites containing the conducting polymer polyaniline as radar absorbing materials in the X-band (microwave) frequency range. It describes the preparation of conductive thermoplastic polymethyl methacrylate (PMMA) composites containing polyaniline conductive filler under conditions that were varied in order to determine their effect on the electrical & microwave properties. The effects of sample mixing, melting temperature, heating time, amount of plasticizer, and amount of conducting polymer on the conductivity, permittivity, and microwave absorption are reported.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 33
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Book Description
Conductive thermoplastic PMMA composites containing Polyaniline conductive filler were prepared. Conditions were varied in order to examine their effect on the electrical and microwave properties. Ball-milling for 2 h prior to heating at 175 deg C at 8- psi for 3 min in the presence of 10 wt % hydroquinone plasticizer was found to give composites with the highest measured microwave absorption in the X-band (8-12 GHz). Loss tangents as high as 44 were attained under these conditions.
Author: American Chemical Society. Division of Polymer Chemistry
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 732
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Book Description
Author: P.M. Visakh
Publisher: Elsevier
ISBN: 0128095660
Category : Technology & Engineering
Languages : en
Pages : 360
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Book Description
Polyaniline Blends, Composites, and Nanocomposites summarizes recent advances in polyaniline-based blends, composites and nanocomposites. Polyaniline (PANI) is a conducting polymer with a range of potential applications, particularly in electronics and packaging. The book covers the preparation, characterization and application of PANI-based composites, including the structure-property relationship and modification of PANI. It offers an in-depth update on the major findings and observations in the field of polyaniline-based blends, composites and nanocomposites, with contributions from leading researchers in industry, academia, government and private research institutions worldwide. The book is an application-oriented, practical guide to the development and application of this polymeric material. The book includes discussion of reinforcement of polyaniline via addition of carbon-based materials, blends with thermoplastics, thermosets, natural and synthetic rubber, and polyaniline based composites and nanocomposites, with an emphasis on enabling polymer scientists and engineers to more effectively utilize this material in new applications. Includes an in-depth update on the state of research into this exciting material, with detailed and practical information for developing emerging applications of polyaniline Enables polymer scientists and engineers to overcome challenges and take advantage of opportunities relating to polyaniline, e.g., solubility of the polymer, improving conductivity and more Includes detailed coverage of the preparation, characterization and application of PANI-based composites in detail, along with the structure-property relationship and modification of PANI
Author: Prasanna Chandrasekhar
Publisher: Springer Science & Business Media
ISBN: 1461552451
Category : Technology & Engineering
Languages : en
Pages : 740
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Book Description
This book deals with the practical fundamentals and applications of conducting polymers. Written from a pedagogical point of view and at a very basic level, it provides a thorough grounding in CPs ideal for further work, as a reference, or as a supplementary course text.
Author: Willie J. Padilla
Publisher: Morgan & Claypool Publishers
ISBN: 1636392601
Category : Science
Languages : en
Pages : 199
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Book Description
Electromagnetic metamaterials are a family of shaped periodic materials which achieve extraordinary scattering properties that are difficult or impossible to achieve with naturally occurring materials. This book focuses on one such feature of electromagnetic metamaterials—the theory, properties, and applications of the absorption of electromagnetic radiation. We have written this book for undergraduate and graduate students, researchers, and practitioners, covering the background and tools necessary to engage in the research and practice of metamaterial electromagnetic wave absorbers in various fundamental and applied settings. Given the growing impact of climate change, the call for innovations that can circumvent the use of conventional energy sources will be increasingly important. As we highlight in Chapter 6, the absorption of radiation with electromagnetic metamaterials has been used for energy harvesting and energy generation, and will help to reduce reliance on fossil fuels. Other applications ranging from biochemical sensing to imaging are also covered. We hope this book equips interested readers with the tools necessary to successfully engage in applied metamaterials research for clean, sustainable energy. This book consists of six chapters. Chapter 1 provides an introduction and a brief history of electromagnetic wave absorbers; Chapter 2 focuses on several theories of perfect absorbers; Chapter 3 discusses the scattering properties achievable with metamaterial absorbers; Chapter 4 provides significant detail on the fabricational processes; Chapter 5 discusses examples of dynamical absorbers; and Chapter 6 highlights applications of metamaterial absorbers.
Author: Yuping Duan
Publisher: CRC Press
ISBN: 1315341034
Category : Science
Languages : en
Pages : 402
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Book Description
With the phenomenal development of electromagnetic wave communication devices and stealth technology, electromagnetic wave absorbing materials have been attracting attention as antielectromagnetic interference slabs, stealth materials, self-concealing technology, and microwave darkrooms. This book starts with the fundamental theory of electromagnetic wave absorption in loss medium space, followed by a discussion of different microwave absorbents, such as manganese dioxide, iron-based composite powder, conductive polyaniline, barium titanate powder, and manganese nitride. Then, structural absorbing materials are explored, including multilayer materials, new discrete absorbers, microwave absorption coatings, cement-based materials, and structural pyramid materials. Many of the graphics demonstrate not only the principles of physics and experimental results but also the methodology of computing. The book will be useful for graduate students of materials science and engineering, physics, chemistry, and electrical and electronic engineering; researchers in the fields of electromagnetic functional materials and nanoscience; and engineers in the fields of electromagnetic compatibility and stealth design.
Author: Joseph Kuruvilla
Publisher: Elsevier
ISBN: 0128175915
Category : Technology & Engineering
Languages : en
Pages : 412
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Book Description
Materials for Potential EMI Shielding Applications: Processing, Properties and Current Trends extensively and comprehensively reviews materials for EMI shielding applications, ranging from the principles to possible applications and various types of shielding materials. The book provides a thorough introduction to electromagnetic interference, its effect on both the environment and other electronic items, various materials that are used for electromagnetic interference shielding applications, and its properties. It explains the mechanism behind EMI shielding, the methods by which EMI SE of a given material is estimated, and the different fabrication methods currently employed for fabricating EMI shielding materials. Final sections focus on the theoretical background of EMI shielding and shielding mechanisms. This theoretical background is extended to the physics of EMI shielding, wherein the physics behind mechanism of shielding is explained. Focuses on the different types of available EMI shielding, their applications, processing, characterization, and the mechanism behind their shielding Discusses how to incorporate EMI shielding with low cost, low density and high strength Provides an understanding and clarifies both elementary and practical problems relating to EMI shielding materials
Author: Mark J. Hampden-Smith
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 1000
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Book Description
The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners. This book was first published in 1992.
Author: Mailadil T. Sebastian
Publisher: John Wiley & Sons
ISBN: 1119208556
Category : Technology & Engineering
Languages : de
Pages : 1000
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Book Description
The recent rapid progress in wireless telecommunication, including the Internet of Things, 5th generation wireless systems, satellite broadcasting, and intelligent transport systems has increased the need for low-loss dielectric materials and modern fabrication techniques. These materials have excellent electrical, dielectric, and thermal properties and have enormous potential, especially in wireless communication, flexible electronics, and printed electronics. Microwave Materials and Applications discusses the methods commonly employed for measuring microwave dielectric properties, the various attempts reported to solve problems of materials chemistry and crystal structure, doping, substitution, and composite formation, highlighting the processing techniques, morphology influences, and applications of microwave materials whilst summarizing many of the recent technical research accomplishments in the area of microwave dielectrics and applications Chapters examine: Oxide ceramics for dielectric resonators and substrates HTCC, LTCC and ULTCC tapes for substrates Polymer ceramic composites for printed circuit boards Elastomer-ceramic composites for flexible electronics Dielectric inks EMI shielding materials Microwave ferrites A comprehensive Appendix presents the fundamental properties for more than 4000 low-loss dielectric ceramics, their composition, crystal structure, and their microwave dielectric properties. Microwave Materials and Applications presents a comprehensive view of all aspects of microwave materials and applications, making it useful for scientists, industrialists, engineers, and students working on current and emerging applications of wireless communications and consumer electronics.
