Download or read book Superhydrophobic Silicone based Nanocomposites for Application to High Voltage Insulator written by Elham Vazirinasab and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Wettability is one of the fundamental characterizations of each solid surface which might affect the final surface properties in different manners. In the light of various Mother Nature's masterpieces, specifically Lotus leaves, as a symbol of purity, the nature-inspired superhydrophobic surfaces have received immense attention. In the present thesis, two different approaches are opted to effectively create artificial self-cleaning/superhydrophobic surfaces to enhance the water-repellency of the engineered silicone rubber and Teflon materials. Firstly, the atmospheric-pressure plasma treatment was used to produce self-cleaning/superhydrophobic high-temperature vulcanized silicone rubber (HTV-SR) surfaces via etching technique. This approach is significant since the use of an atmospheric-pressure plasma system as a simple, fast and environmentally friendly technique is combined with compressed air as an eco-friendly plasma gas which offers great potential for the mass production of superhydrophobic surfaces in an industrial scale. Using plasma treatment, a substantial enhancement in the water-repellency of HTV-SR surfaces, i.e., static water contact angle (WCA) >160° and a contact angle hysteresis (CAH) 3°, was attained due to the formation of coral-like micro-nanostructures on the surface. Possessing the appropriate surface structures depends highly on the composition of plasma jet affected by plasma operating parameters. Thus, the role of significant plasma operating parameters on the surface water-repellency was assessed with the help of a design of experiment (DoE) method to determine the near-optimal operating parameters. The icephobic properties are divided into two categories of anti-icing and de-icing properties. Anti-icing properties correspond to the delay in the ice formation, while de-icing properties illustrate the reduction of the adhesion strength of the ice formed on the surface. The well-known ice adhesion measurement techniques, i.e., the centrifuge adhesion and push-off tests, were used to provide quantitative comparisons of the ice adhesion strength of the produced surfaces. The delayed ice formation and considerable low ice adhesion strength of the plasma-treated superhydrophobic HTV-SR surface confirmed their desirable icephobicity. However, the robustness of the superhydrophobic surfaces can be considered as the Achilles heel toward industrialization and real-life applications. To ensure long-lasting superhydrophobic properties, the mechanical durability and chemical stability of the produced superhydrophobic surface were rigorously evaluated. Although the produced surface preserved its water-repellent properties in multiple tests, under some harsh mechanical damages, the superhydrophobic properties were reduced. Secondly, regarding the poor mechanochemical robustness of superhydrophobic surfaces susceptible to damage, a non-fluorinated volumetric superhydrophobic nanocomposite was produced through embedding diatomaceous earth and fumed silica particles into the HTV-SR matrix. The volumetric superhydrophobic nanocomposite is a new concept in fabrication of damage-tolerant superhydrophobic surfaces where each face and every layer of the nanocomposites is superhydrophobic. Given the importance of the diatomaceous earth/fumed silica mass ratio in final surface structure and crosslinking density of the nanocomposite, an in-depth assessment of the water-repellency, crosslinking density, and hardness of the produced nanocomposites was accomplished as a function of various diatomaceous earth to fumed silica mass ratios. Regarding the surface robustness, multiple severe mechanical and chemical tests were conducted including sandpaper and knife scratching, tape peeling, water jet impact, and sandblasting after which the surface retained its initial water-repellency. Moreover, even if during mechanical and/or chemical damages, the superhydrophobicity of the nanocomposite was deteriorated, the water-repellency could be restored by removing the outermost layer. It was due to the presence of embedded low surface energy micro-nanostructures within the entire body of the nanocomposite. Thirdly, to scrutinize the potential application of plasma treatment approach to various polymers, a thermoplastic insulating material, i.e., polytetrafluoroethylene (PTFE) commercially known as Teflon, was selected to fabricate superhydrophobic surfaces. The produced superhydrophobic Teflon surfaces possessed ultra-water-repellency, icephobicity, and self-cleaning. Although the plasma treatment did not alter the chemical composition of the Teflon surface, the lotus leaf-like hierarchical micro-nanostructures created on the plasma-treated surface were responsible for its surface water-repellency. Both water droplet rolling off and impact test ascertained the significant role of the hierarchical micro-nanostructures on the surface water-repellency as well as the consistency of Cassie-Baxter regime. In addition to the self-cleaning properties, the micro-nanostructured Teflon surface substantially reduced the ice adhesion strength to a content that the produced surface could be categorized as a passive anti-icing surface. Moreover, the onset of freezing of a water droplet was reduced on the superhydrophobic surface due to the presence of air pockets trapped within its surface asperities. The approaches introduced in this thesis can be implemented in different industries as they are cost-effective, quickly adaptable, and environmentally friendly methods. La mouillabilité est l'une des caractéristiques fondamentales de chaque surface solide qui peut affecter de différentes manières les propriétés finales de surface. À la lumière de divers chefs-d'oeuvre de Mère Nature, particulièrement les feuilles de lotus, en tant que symbole de pureté, les surfaces superhydrophobes inspirées de la nature ont reçu une immense attention. Dans la présente thèse, deux approches distinctes sont choisies pour créer efficacement des surfaces autonettoyantes / superhydrophobes. Ces surfaces possèdent une excellente hydrofugation pour améliorer la durée de vie de différents matériaux d'ingénierie tels que le caoutchouc de silicone et le Teflon. Dans un premier temps, le traitement au plasma à pression atmosphérique a été utilisé pour produire des surfaces autonettoyantes / superhydrophobes de caoutchouc de silicone vulcanisé à haute température (HTV-SR) via une technique de gravure. Cette approche est importante car l'utilisation d'un système plasma à pression atmosphérique est une technique simple, rapide et respectueuse de l'environnement. Ainsi utilisé l'air comprimé en tant que gaz écologique à plasma, cette technique offre un grand potentiel pour la production des surfaces superhydrophobes à grande échelle. Grâce au traitement au plasma, une amélioration substantielle de l'hydrofugation des surfaces HTV-SR (c'est-à-dire un angle de contact statique avec l'eau (WCA) 160° et une hystérésis d'angle de contact (CAH)
Download or read book Handbook of Nanomaterials for Industrial Applications written by Chaudhery Mustansar Hussain and published by Elsevier. This book was released on 2018-07-19 with total page 1143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Nanomaterials for Industrial Applications explores the use of novel nanomaterials in the industrial arena. The book covers nanomaterials and the techniques that can play vital roles in many industrial procedures, such as increasing sensitivity, magnifying precision and improving production limits. In addition, the book stresses that these approaches tend to provide green, sustainable solutions for industrial developments. Finally, the legal, economical and toxicity aspects of nanomaterials are covered in detail, making this is a comprehensive, important resource for anyone wanting to learn more about how nanomaterials are changing the way we create products in modern industry. - Demonstrates how cutting-edge developments in nanomaterials translate into real-world innovations in a range of industry sectors - Explores how using nanomaterials can help engineers to create innovative consumer products - Discusses the legal, economical and toxicity issues arising from the industrial applications of nanomaterials
Download or read book Liquid Silicone Rubber written by Johannes Karl Fink and published by John Wiley & Sons. This book was released on 2019-07-05 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the very few books devoted to the chemistry, materials and processing of liquid silicone rubber The scientific literature with respect to liquid silicone rubber is collected in this monograph. The text focuses on the fundamental issues such as properties, curing methods, special materials, as well as the latest developments, and provides a broad overview of the materials used therein. In particular, materials and compositions for liquid functional rubbers are discussed. Methods of curing and special properties are also described, such as tracking and erosion resistance, adhesion properties, storage and thermal stability. Methods of curing are precision casting, hybrid additive manufacturing, peroxide curing, ultraviolet curing, liquid injection moulding, or hot embossing. The book includes applications including automotive and underwater applications, electrical and optical uses, as well as medical uses.
Download or read book Electrical Treeing Properties of Silicone Rubber organo Montmorillonite Nanocomposites as an Insulator for High Voltage Applications written by Abdul Azim Abd Jamil and published by . This book was released on 2015 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foundations and Frontiers in Computer Communication and Electrical Engineering written by Aritra Acharyya and published by CRC Press. This book was released on 2016-05-05 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 3rd International Conference on Foundations and Frontiers in Computer, Communication and Electrical Engineering is a notable event which brings together academia, researchers, engineers and students in the fields of Electronics and Communication, Computer and Electrical Engineering making the conference a perfect platform to share experience, f
Download or read book Advances in Material Science and Engineering written by Mokhtar Awang and published by Springer Nature. This book was released on 2021-07-05 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected papers from the 6th International Conference on Mechanical, Manufacturing and Plant Engineering (ICMMPE 2020), held virtually via Google Meet. It highlights the latest advances in the emerging area, brings together researchers and professionals in the field and provides a valuable platform for exchanging ideas and fostering collaboration. Joining technologies could be changed to manufacturing technologies. Addressing real-world problems concerning joining technologies that are at the heart of various manufacturing sectors, the respective papers present the outcomes of the latest experimental and numerical work on problems in soldering, arc welding and solid-state joining technologies.
Download or read book 21st Century Nanoscience A Handbook written by Klaus D. Sattler and published by CRC Press. This book was released on 2020-04-22 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 21st Century Nanoscience Handbook will be the most comprehensive, up-to-date large reference work for the field of nanoscience. Handbook of Nanophysics by the same editor published in the fall of 2010 and was embraced as the first comprehensive reference to consider both fundamental and applied aspects of nanophysics. This follow-up project has been conceived as a necessary expansion and full update that considers the significant advances made in the field since 2010. It goes well beyond the physics as warranted by recent developments in the field. This ninth volume in a ten-volume set covers industiral applications. Key Features: Provides the most comprehensive, up-to-date large reference work for the field. Chapters written by international experts in the field. Emphasises presentation and real results and applications. This handbook distinguishes itself from other works by its breadth of coverage, readability and timely topics. The intended readership is very broad, from students and instructors to engineers, physicists, chemists, biologists, biomedical researchers, industry professionals, governmental scientists, and others whose work is impacted by nanotechnology. It will be an indispensable resource in academic, government, and industry libraries worldwide. The fields impacted by nanophysics extend from materials science and engineering to biotechnology, biomedical engineering, medicine, electrical engineering, pharmaceutical science, computer technology, aerospace engineering, mechanical engineering, food science, and beyond.
Download or read book Atmospheric Icing of Power Networks written by Masoud Farzaneh and published by Springer Science & Business Media. This book was released on 2008-08-20 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive book that documents the fundamentals of atmospheric icing and surveys the state of the art in eight chapters, each written by a team of experienced and internationally renowned experts. The treatment is detailed and richly illustrated.
Download or read book Outdoor Insulators written by Ravi S. Gorur and published by Ravi s Gorur Incorporated. This book was released on 1999 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silicon based Nanomaterials written by Handong Li and published by Springer. This book was released on 2016-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A variety of nanomaterials have excellent optoelectronic and electronic properties for novel device applications. At the same time, and with advances in silicon integrated circuit (IC) techniques, compatible Si-based nanomaterials hold promise of applying the advantages of nanomaterials to the conventional IC industry. This book focuses not only on silicon nanomaterials, but also summarizes up-to-date developments in the integration of non-silicon nanomaterials on silicon. The book showcases the work of leading researchers from around the world who address such key questions as: Which silicon nanomaterials can give the desired optical, electrical, and structural properties, and how are they prepared? What nanomaterials can be integrated on to a silicon substrate and how is this accomplished? What Si-based nanomaterials may bring a breakthrough in this field? These questions address the practical issues associated with the development of nanomaterial-based devices in applications areas such as solar cells, luminous devices for optical communication (detectors, lasers), and high mobility transistors. Investigation of silicon-based nanostructures is of great importance to make full use of nanomaterials for device applications. Readers will receive a comprehensive view of Si-based nanomaterials, which will hopefully stimulate interest in developing novel nanostructures or techniques to satisfy the requirements of high performance device applications. The goal is to make nanomaterials the main constituents of the high performance devices of the future.
Download or read book Composite Materials written by Kamal K. Kar and published by Springer. This book was released on 2016-10-14 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite materials are used as substitutions of metals/traditional materials in aerospace, automotive, civil, mechanical and other industries. The present book collects the current knowledge and recent developments in the characterization and application of composite materials. To this purpose the volume describes the outstanding properties of this class of advanced material which recommend it for various industrial applications.
Download or read book Microscale Surface Tension and Its Applications written by Pierre Lambert and published by MDPI. This book was released on 2019-10-21 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on advances in miniaturization and soft matter, surface tension effects are a major key to the development of soft/fluidic microrobotics. Benefiting from scaling laws, surface tension and capillary effects can enable sensing, actuation, adhesion, confinement, compliance, and other structural and functional properties necessary in micro- and nanosystems. Various applications are under development: microfluidic and lab-on-chip devices, soft gripping and manipulation of particles, colloidal and interfacial assemblies, fluidic/droplet mechatronics. The capillary action is ubiquitous in drops, bubbles and menisci, opening a broad spectrum of technological solutions and scientific investigations. Identified grand challenges to the establishment of fluidic microrobotics include mastering the dynamics of capillary effects, controlling the hysteresis arising from wetting and evaporation, improving the dispensing and handling of tiny droplets, and developing a mechatronic approach for the control and programming of surface tension effects. In this Special Issue of Micromachines, we invite contributions covering all aspects of microscale engineering relying on surface tension. Particularly, we welcome contributions on fundamentals or applications related to: Drop-botics: fluidic or surface tension-based micro/nanorobotics: capillary manipulation, gripping, and actuation, sensing, folding, propulsion and bio-inspired solutions; Control of surface tension effects: surface tension gradients, active surfactants, thermocapillarity, electrowetting, elastocapillarity; Handling of droplets, bubbles and liquid bridges: dispensing, confinement, displacement, stretching, rupture, evaporation; Capillary forces: modelling, measurement, simulation; Interfacial engineering: smart liquids, surface treatments; Interfacial fluidic and capillary assembly of colloids and devices; Biological applications of surface tension, including lab-on-chip and organ-on-chip systems.
Download or read book Multifunctional Oxide Based Materials From Synthesis to Application written by Teofil Jesionowski and published by MDPI. This book was released on 2019-09-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with novel aspects and perspectives in metal oxide and hybrid material fabrication. The contributions are mainly focused on the search for a new group of advanced materials with designed physicochemical properties, especially an expanded porous structure and defined surface activity. The proposed technological procedures result in an enhanced activity of the synthesized hybrid materials, which is of great importance when considering their potential fields of application. The use of such materials in different technological disciplines, including aspects associated with environmental protection, allows for the verification of the proposed synthesis method. Thus, it can be stated that those aspects are of interdisciplinary character and may be located at the interface of three scientific disciplines—chemistry, materials science, and engineering—as well as environmental protection. Furthermore, the presented scientific scope is in some way an answer to the continuous demand for such types of materials and opens new perspectives for their practical use
Download or read book Bio inspired Polymers written by Nico Bruns and published by Royal Society of Chemistry. This book was released on 2016-10-14 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many key aspects of life are based on naturally occurring polymers, such as polysaccharides, proteins and DNA. Unsurprisingly, their molecular functionalities, macromolecular structures and material properties are providing inspiration for designing new polymeric materials with specific functions, for example, responsive, adaptive and self-healing materials. Bio-inspired Polymers covers all aspects of the subject, ranging from the synthesis of novel polymers, to structure-property relationships, materials with advanced properties and applications of bio-inspired polymers in such diverse fields as drug delivery, tissue engineering, optical materials and lightweight structural materials. Written and edited by leading experts on the topic, the book provides a comprehensive review and essential graduate level text on bio-inspired polymers for biochemists, materials scientists and chemists working in both industry and academia.
Download or read book Electrospun Nanofibers written by Mehdi Afshari and published by Woodhead Publishing. This book was released on 2016-09-13 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrospun Nanofibers covers advances in the electrospinning process including characterization, testing and modeling of electrospun nanofibers, and electrospinning for particular fiber types and applications. Electrospun Nanofibers offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science. Electrospinning is the most commercially successful process for the production of nanofibers and rising demand is driving research and development in this field. Rapid progress is being made both in terms of the electrospinning process and in the production of nanofibers with superior chemical and physical properties. Electrospinning is becoming more efficient and more specialized in order to produce particular fiber types such as bicomponent and composite fibers, patterned and 3D nanofibers, carbon nanofibers and nanotubes, and nanofibers derived from chitosan. - Provides systematic and comprehensive coverage of the manufacture, properties, and applications of nanofibers - Covers recent developments in nanofibers materials including electrospinning of bicomponent, chitosan, carbon, and conductive fibers - Brings together expertise from academia and industry to provide comprehensive, up-to-date information on nanofiber research and development - Offers systematic and comprehensive coverage for academic researchers, industry professionals, and postgraduate students working in the field of fiber science
Download or read book Superhydrophobic Surfaces written by Mehdi Khodaei and published by . This book was released on 2020-07 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanocomposite Materials written by Jyotishkumar Parameswaranpillai and published by CRC Press. This book was released on 2016-09-19 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive collection of the latest information on nanomaterials and nanocomposites. It covers material synthesis, processing, structure characterization, properties and applications. It presents a coherent treatment of how composite properties depend on nanostructure, and covers cutting-edge topics like bionanocomposites for sustainable development. This book summarizes many developments in the field making it an ideal resource for researchers from industry, academia, government and private research institutions.
