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Study On Fine Powder Coating With Modified Additive
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Book Synopsis Study on Fine Powder Coating with Modified Additive by : Dangchen Xue
Download or read book Study on Fine Powder Coating with Modified Additive written by Dangchen Xue and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder coating is a dry coating technology competing with conventional liquid coatings and offers many benefits such as the elimination of volatile organic compounds, high efficiency of material usage and improved coating durability. However, the rough and thick film surface restricts its wide application. The fine powder coating, which can solve the film quality issues, also has its own limitation: the powder is too cohesive to handle. Although, nanoparticle flow additives can significantly improve the flowability of fine powders, it leads to another obstacle at the same time. Since the inorganic nano additives are not fully compatible with the organic fine powder coating materials during the curing process, the agglomerates formed by nanoparticles can result in film defects such as seeds and pinholes, as well as the reduction of gloss. A technology of encapsulating polymer resins on the surface of nano silica additive is used for this work. By modifying the surface of the inorganic additives, the compatibility issues are expected to be solved while the effect of additive on flowabilities remains. The modified additives were prepared by encapsulating commercial nano silica additives with 2 organic materials, polyester or hybrid, in 4 different Resin-to-Encapsulated Additive ratios (R-EA ratios) and evaluated by TEM. The additives were incorporated into fine coating powders in 4 different additive loading ratios (LOAs). All of the 40 samples were tested by flow property measurements to obtain their angle of repose (for semi-static flow property) and avalanche angle (for dynamic flow property). The results show that with a suitable R-EA ratio and additive loading ratio, the powder sample performs better with improved semi-static and dynamic flow properties. And the optimum R-EA ratios and LOAs were suggested for specific applications. For each powder samples, three panels were sprayed with an electrostatic method and all of the 120 coated panels were evaluated by measuring gloss and the number of seeds on the film surface. Some panels were evaluated by a roughness profiler. The results show that coating films from the samples with modified additives have higher gloss, lower roughness and less seeds on the surface.
Book Synopsis Effects of Additive Modification on Flow Properties of Fine Coating Particles by : Danni Bao
Download or read book Effects of Additive Modification on Flow Properties of Fine Coating Particles written by Danni Bao and published by . This book was released on 2013 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The major challenge in fine powder coating technology is to improve the flowability of powders, so that the fine particles can be fluidized, pneumatically transported and then sprayed onto substrates homogenously. Although this can be achieved by adding commercial inorganic nanoparticles as flow additives, it also causes problems including film defects (seeds and fish eyes), because the inorganic additives are not fully compatible with the organic fine powder coating materials during curing. In this study, the concept of modified additives were exploited to improve the film quality and to enhance the performance of the modified additives on improving the flowability of the fine coating powders. The modified additives were produced by encapsulating the commercial nano-additives with three organic materials, epoxy, polyester and hybrid with a wet encapsulation method. The encapsulated additives were evaluated by TEM to make sure they are still in nano-scale. Functionality tests of the modified additives were conducted through the flowability measurements of fine polyurethane coating powder samples with modified additives. Sixty-six fine powder samples were tested for their angle of repose (AOR, a semi-static flowability) and avalanche angle (AVA, a dynamic flowability test). The results showed that both AOR and AVA were significantly affected by the encapsulating materials and their weight percentage, as well as the total loading radios of additives used in fine powders. An adhesion force model was proposed to reveal the mechanism on how the additive improving the flowability of fine powder. Based on this model, the optimum loading ratio of the additive for fine particles were predicted, which agreed well with the experimental results. Thus, this model can be used to predict the optimum loading ratio of the additive for different host particle sizes.
Book Synopsis Characterization of Fine Powders and Development of Processes for Powder Coatings by : Jing Fu
Download or read book Characterization of Fine Powders and Development of Processes for Powder Coatings written by Jing Fu and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional powder coating provides poor coating appearance. Fine powder coating can overcome this drawback since the smaller powder particles lead to much smoother finish. Nevertheless, fine powder has been experienced to cause more application problems. This study investigated fine powder coatings from different aspects and it provided solutions to solve these application problems. The investigation on fine powders conducted by this study concluded that the medium particle size and D10 was not suitable for the flowability characterization of fine powder coatings. Instead, an index which represented the particle size distribution could correlate with the flowabilities of the fine powder coatings much better. In addition, several processing methods were developed for the production of fine powder coatings. The experiments disclosed that the revised designs of the cyclone and the grinder could obtain narrower particle size distribution of the powder coatings, which was desired. In addition, other performances of the processes were not sacrificed. The spraying method of powder coatings was also investigated in this study. The additional moisture on the surfaces of the fine powder particles was found to reduce the resistivity of the powder so as to enhance the transfer efficiency during the corona spraying. On the other hand, a new spray gun design with alternative charging pattern could reduce the Faraday Cage effect during corona spraying of fine powders. In addition, it also showed large potential on improving the transfer efficiency of coarse powders. Finally, new processing techniques for functional powder coatings were developed. Utilization of dry blended catalysts could solve the problems of pre-curing and short shelf life associated with the conventional low-cure powder coatings. Other than that, the complicated heat-blending process for processing metallic color powder coatings can be replaced by a new bonding technique with utilization of liquid bonder. The strong bond between powder particles and metallic pigments provided by this new technique can solve the recyclability problem of the metallic color powder coatings during spraying. The discoveries from the thesis study contribute to further understandings of powder coatings. This study also provides useful suggestions for future developments of powder coating technologies.
Book Synopsis Additives for Coatings by : Johan Bieleman
Download or read book Additives for Coatings written by Johan Bieleman and published by John Wiley & Sons. This book was released on 2008-09-26 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: No doubt: A perfect coating has to look brilliant! But other properties of coatings are also most important. Coatings have to be durable, tough and easily applicable. Additives are the key to success in achieving these characteristics, even though the amounts used in coating formulations are small. It is not trivial at all to select the best additives. In practice, many series of tests are often necessary, and the results do not explain, why a certain additive improves the quality of a coating and another one impairs the coating. This book is dedicated to developers and applicants of coatings working in research or production, and it is aimed at providing a manual for their daily work. It will answer the following questions: How do the most important groups of additives act? Which effects can be be achieved by their addition? Scientific theories are linked to practical applications. Emphasis is put on the optical aspects that are most important for the applications in practice. This book is a milestone in quality assurance in the complete field of coatings!
Book Synopsis Corrosion Control Through Organic Coatings by : Ole Øystein Knudsen
Download or read book Corrosion Control Through Organic Coatings written by Ole Øystein Knudsen and published by CRC Press. This book was released on 2017-04-28 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion Control Through Organic Coatings, Second Edition provides readers with useful knowledge of the practical aspects of corrosion protection with organic coatings and links this to ongoing research and development. Thoroughly updated and reorganized to reflect the latest advances, this new edition expands its coverage with new chapters on coating degradation, protective properties, coatings for submerged service, powder coatings, and chemical pretreatment. Maintaining its authoritative treatment of the subject, the book reviews such topics as corrosion-protective pigments, waterborne coatings, weathering, aging, and degradation of paint, and environmental impact of commonly used techniques including dry- and wet-abrasive blasting and hydrojetting. It also discusses theory and practice of accelerated testing of coatings to assist readers in developing more accurate tests and determine corrosion protection performance.
Book Synopsis Organic Coatings by : Frank N. Jones
Download or read book Organic Coatings written by Frank N. Jones and published by John Wiley & Sons. This book was released on 2017-10-02 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive guide to organic coatings, thoroughly revised and updated—now with coverage of a range of topics not covered in previous editions Organic Coatings: Science and Technology, Fourth Edition offers unparalleled coverageof organic coatings technology and its many applications. Written by three leading industry experts (including a new, internationally-recognized coatings scientist) it presents a systematic survey of the field, revises and updates the material from the previous edition, and features new or additional treatment of such topics as superhydrophobic, ice-phobic, antimicrobial, and self-healing coatings; sustainability, artist paints, and exterior architectural primers. making it even more relevant and useful for scientists and engineers in the field, as well as for students in coatings courses. The book incorporates up-to-date coverage of recent developments in the field with detailed discussions of the principles underlying the technology and their applications in the development, production, and uses of organic coatings. All chapters in this new edition have been updated to assure consistency and to enable extensive cross-referencing. The material presented is also applicable to the related areas of printing inks and adhesives, as well as areas within the plastics industry. This new edition Completely revises outdated chapters to ensure consistency and to enable extensive cross-referencing Correlates the empirical technology of coatings with the underlying science throughout Provides expert troubleshooting guidance for coatings scientists and technologists Features hundreds of illustrative figures and extensive references to the literature A new, internationally-recognized coatings scientist brings fresh perspective to the content. Providing a broad overview for beginners in the field of organic coatings and a handy reference for seasoned professionals, Organic Coatings: Science and Technology, Fourth Edition, gives you the information and answers you need, when you need them.
Book Synopsis Cold-Spray Coatings by : Pasquale Cavaliere
Download or read book Cold-Spray Coatings written by Pasquale Cavaliere and published by Springer. This book was released on 2017-11-08 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines the contributions of experts in the field to describe the behavior of various materials, micromechanisms involved during processing, and the optimization of cold-spray technology. It spans production, characterization, and applications including wear resistance, fatigue, life improvement, thermal barriers, crack repair, and biological applications. Cold spray is an innovative coating technology based on the kinetic energy gained by particles sprayed at very high pressures. While the technique was developed in the 1990s, industrial and scientific interest in this technology has grown vastly in the last ten years. Recently, many interesting applications have been associated with cold-sprayed coatings, including wear resistance, fatigue life improvement, thermal barriers, biological applications, and crack repair. However, many fundamental aspects require clarification and description.
Book Synopsis Thin Film Processes by : Hyun Wook Jung
Download or read book Thin Film Processes written by Hyun Wook Jung and published by MDPI. This book was released on 2020-12-29 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin film processes are significantly incorporated in manufacturing display panels, secondary batteries, fuel/solar cells, catalytic films, membranes, adhesives, and other commodity films. This Special Issue on “Thin Film Processes” of Processes listed recent progress on thin-film processes, covering theoretical considerations, experimental observations, and computational techniques. Articles in this Issue consider comprehensive studies on thin film processes and related materials.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1991-10 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Pigments and Additives for Corrosion Protection by Organic Coatings by : Flavio Deflorian
Download or read book New Pigments and Additives for Corrosion Protection by Organic Coatings written by Flavio Deflorian and published by Frontiers Media SA. This book was released on 2020-12-11 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Author :Management Association, Information Resources Publisher :IGI Global ISBN 13 :1522516786 Total Pages :417 pages Book Rating :4.5/5 (225 download)
Book Synopsis 3D Printing: Breakthroughs in Research and Practice by : Management Association, Information Resources
Download or read book 3D Printing: Breakthroughs in Research and Practice written by Management Association, Information Resources and published by IGI Global. This book was released on 2016-10-06 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advancement of modern technology has allowed for impressive developments in manufacturing processes. Out of these developments, 3D printing has emerged as a new method. 3D Printing: Breakthroughs in Research and Practice is a comprehensive reference source for the latest research and advances on 3D printing processes, technologies, and methods. Highlighting emerging perspectives on manufacturing and industrial applications, this book is ideally designed for professionals, practitioners, students, and researchers interested in the latest developments and uses of 3D printing.
Book Synopsis Japanese Journal of Applied Physics by :
Download or read book Japanese Journal of Applied Physics written by and published by . This book was released on 2006 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Manufacturing Driving Circular Economy by : Holger Kohl
Download or read book Manufacturing Driving Circular Economy written by Holger Kohl and published by Springer Nature. This book was released on 2023-05-27 with total page 1105 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an open access book. It gathers the proceedings of the 18th Global Conference on Sustainable Manufacturing, held on October 5-7, 2022, as a hybrid event, in/from Berlin, Germany. With a focus on manufacturing advances and practices driving the circular economy, the chapters selected for this book report on sustainable manufacturing technologies for the mobility, energy and construction sector, and for machines and equipments, covering applications of artificial intelligence and industry 4.0. Moreover, they discuss energy-efficient process, waste reuse, and CO2 neutral production, giving a special emphasis to developing sustainable manufacturing in emerging countries. This book offers extensive and timely information for both researchers and professionals in the field of manufacturing and business development.
Book Synopsis Bonded Magnets by : G.C. Hadjipanayis
Download or read book Bonded Magnets written by G.C. Hadjipanayis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bonded magnets are the fastest growing sector in the entire market for magnetic materials. Their great advantages lie in the cost effective net-shape manufacturing process allowing the achievement of complex geometries and their isotropic magnetic properties. Energy products have more than quadrupled in recent years, too. The contributors to this volume present the current and future status of bonded magnets, including total world production and distribution, the markets involved, and the status of current and future applications. Current novel processing techniques are described and new developments reported, including powder production techniques, jet casting/melt spinning, atomization and DDDR processes. The different types of bonded magnets reviewed include isotropic and anisotropic neodymium-iron-boron, nanocomposites, Sm-Fe interstitial nitrides, Sm-Co and ferrites.
Author :José Manuel Valverde Millán Publisher :Springer Science & Business Media ISBN 13 :9400755872 Total Pages :144 pages Book Rating :4.4/5 (7 download)
Book Synopsis Fluidization of Fine Powders by : José Manuel Valverde Millán
Download or read book Fluidization of Fine Powders written by José Manuel Valverde Millán and published by Springer Science & Business Media. This book was released on 2012-10-12 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the rich phenomenology exhibited by fine powders when they are fluidized by a gas flow. Fine powder cohesiveness leads to poor flowability, clumping, difficulty in fluidizing, irregular avalanching behavior, etc. Despite all the inconveniences, fine powder processes pervade the chemical, pharmaceutical, agricultural and mining industries among others. The author in this book analyzes the mechanism by which interparticle adhesive forces are reduced by means of surface additives. Different techniques have been developed in the last years to assist fluidization by helping the gas flow to mobilize and break cohesive aggregates, which help to homogenize fluidization. As reviewed in this book, the use of these techniques may have a relevant impact on novel processes based on fluidized beds of fine powder and with relevant applications on leading edge technologies such as Atomic Layer Deposition on nanoparticles and CO2 capture by gas-fluidized beds of adsorbent powders. The study of fluidized beds has a marked interdisciplinary character. This book is thus intended for academic and industrial researchers in applied physics, mechanical, chemical, and environmental engineering, who are interested in the special characteristics of fine powders.
Download or read book Powder Flow written by Ali Hassanpour and published by Royal Society of Chemistry. This book was released on 2019-07-12 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Powder flow has attracted increased attention in recent years as novel formulated and functional products are being developed in powder forms, particularly in pharmaceutical and high value additive manufacturing industries. This book meets a need for a truly integrated modern treatment of dry powder flow, covering theory, robust characterisation techniques, modelling tools and applications. Written by leaders in the field, the book opens by introducing the wide range of powder processing problems faced by industry, the complexities of powders and the myriad of ways their flow behaviour can be characterised. The authors then move on, with contributions from experts, to describe fundamental properties that can be measured, defining the states of stress and shear rate and the considerations that need to be taken account. By providing a comprehensive treatment of all available characterisation techniques, as well as various modelling tools, the reader obtains a clear, practical overview. Case studies and applications connect theory to practical examples across a broad range of industries. This book stands out by not only providing the reader with guidance on what to measure but also how to interpret results, ensuring this is an invaluable text for anyone working on powder flow in the chemical, pharmaceutical and manufacturing industries, as well as students and researchers across chemical and process engineering disciplines.
Book Synopsis Modern Cold Spray by : Julio Villafuerte
Download or read book Modern Cold Spray written by Julio Villafuerte and published by Springer. This book was released on 2015-08-24 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the current state of the art of the novel cold spray process. Cold spray is a solid state metal consolidation process, which allows engineers to tailor surface and shape properties by optimizing process parameters, powder characteristics and substrate conditions for a wide variety of applications that are difficult or impossible by other techniques. Readers will benefit from this book's coverage of the commercial evolution of cold spray since the 1980's and will gain a practical understanding of what the technology has to offer.
