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Melt Blowing

Melt Blowing
Equipment, Technology, and Polymer Fibrous Materials

by Leonid Semenovich Pinchuk,V. A. Goldade,A. V. Makarevich,V. N. Kestelman

  • Publisher : Springer Science & Business Media
  • Release : 2002
  • Pages : 212
  • ISBN : 9783540432234
  • Language : En, Es, Fr & De
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This book is devoted to a nontraditional class of materials which are manufactured by the melt-blowing process - i.e. by extrusion of polymer melt followed by fiber stretching with a gas stream. For the first time extensive data on classical and modern modifications of this technology are generalized and a review is given of extrusion head dies and subsidiary equipment. The text examines the structure and main properties of melt-blown materials as conditioned by peculiarities of overheated polymer melt spraying in an oxidizing medium. Information is given about filtering mechanisms and the main types of polymer fibrous filtering materials: electret, magnetic, adsorptional, bactericidic, and about carriers of microorganisms in biofilters. Social and ecological aspects of the application of melt-blown materials are analyzed.

Crystallization Modalities in Polymer Melt Processing

Crystallization Modalities in Polymer Melt Processing
Fundamental Aspects of Structure Formation

by Hermann Janeschitz-Kriegl

  • Publisher : Springer Science & Business Media
  • Release : 2009-09-18
  • Pages : 221
  • ISBN : 9783211876275
  • Language : En, Es, Fr & De
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Structure formation in crystallizing polymers, as occurring during processing, has not been treated so far in a coherent form. This fact explains, why this monograph is written as the ?rst book devoted to this subject. A quarter of a century ago the underdevelopment of this subject was obvious. Trial and error dominated. In fact, other apposite subjects as polymer melt rheology or heat transfer, had reached high levels. A great number of books has been devoted to them. Mold ?lling of amorphous polymers and the solidi?cation of these polymers by vitri?cation can nowadays be simulated numerically with a high degree of accuracy. In the solidi?ed sample even residual stresses and corresponding birefringence effects can accurately be 1 calculated . However, semicrystalline polymers, which form the majority of industrial po- mers, have been excluded from these considerations for good reasons. In fact, great uncertainties existed about the formation of quality determining crystalline str- tures. In particular, polyole?ns suffered from this shortcoming. In 1983 this fact instigated the polymer research group at the Johannes Kepler University in Linz to start with pertinent activities. The urgency of this kind of studies becomes evident, if advantages and hitches of these polymers are considered. 1. Versatility of processing: Injection molding into a great variety of shapes and sizes, from thin walled beakers to garden chairs, not to forget pipe and pro?le extrusion, cable coating, ?ber spinning, ?lm blowing. 2. Product qualities: Ductility, low density, good electric insulation, corrosion resistance, surface quality.

Granite: From Segregation of Melt to Emplacement Fabrics

Granite: From Segregation of Melt to Emplacement Fabrics
A Book

by J.-L. Bouchez,D. Hutton,W.E. Stephens

  • Publisher : Springer Science & Business Media
  • Release : 2013-11-11
  • Pages : 358
  • ISBN : 9401717176
  • Language : En, Es, Fr & De
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viii debate of those earlier days has been beautifully summarized by H. H. Read in his famous "Granite Controversy" (1957). Read's formulation of the controversy occurred at the time when geochemistry was as a new and powerful tool. The new techniques opened era during which emerging an granites were considered mainly from this new viewpoint. Geochemical signatures have shown that mantle and crustal origins for granites were both possible, but the debate on how and why granites are emplaced did not progress much. Meanwhile, structural geology was essentially geometrical and mechanistic. In the early 70's, the structural approach began to widen to include solid state physics and fluid dynamics. Detailed structural maps of granitic bodies were again published, mainly in France, and analysed in terms of magmatic and plastic flow. The senior editor of this volume and his students deserve much of the credit for this new development. Via microstructural and petrofabric studies, they were able to discriminate between strain in the presence of residual melt or in the solid-state, and, by systematically measuring magnetic fabrics (AMS), they have been able to map magmatic foliations and lineations in ever finer detail, using the internal markers within granites coming from different tectonic environments. The traditional debate has been shifted anew. The burning question now seems to be how the necessary, large-scale or local, crustal extension required for granite emplacement can be obtained.

Melt Crystallization Technology

Melt Crystallization Technology
A Book

by Tine Arkenbout-de Vroome

  • Publisher : Routledge
  • Release : 2021-01-31
  • Pages : 383
  • ISBN : 1351432230
  • Language : En, Es, Fr & De
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From the Author's Preface: There is a growing demand for ultrapure organic compounds such as fine chemicals, pharmaceuticals, and basic materials for use in the polymer industry. . . . In quite a number of cases, it is difficult or impossible to manufacture ultrapure organics efficiently using conventional separation techniques such as distillation. Moreover, conventional techniques usually require large amounts of energy. To improve the purification efficiency of organics, special techniques based on crystallization from the melt have been developed. Melt crystallization meets industry's need for a highly selective separation process for organic compounds which operates at low enough temperatures to prevent thermal degradation. Melt crystallization processes have the added advantage that they are energy-efficient and ecologically sound. Melt crystallization techniques appear to be particularly promising for upgrading organic materials and are one of the few routes that appear to be feasible for purifying starter materials for high-tech polymers. The aim of this book is to provide basic information on melt crystallization technology. . . . This monograph consists of three parts: 1. basic principles, 2. process options, and 3. technical equipment and applicability. This new book is the first unified guide and reference to an important chemical process technology. It is comprehensive and organized for easy reference. More than 150 diagrammatic representations, flow charts and photographs illustrate equipment and processes. More than 40 tables provide useful reference data.

Melt Extrusion

Melt Extrusion
Materials, Technology and Drug Product Design

by Michael A. Repka,Nigel Langley,James DiNunzio

  • Publisher : Springer Science & Business Media
  • Release : 2013-10-11
  • Pages : 474
  • ISBN : 1461484324
  • Language : En, Es, Fr & De
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This volume provides readers with the basic principles and fundamentals of extrusion technology and a detailed description of the practical applications of a variety of extrusion processes, including various pharma grade extruders. In addition, the downstream production of films, pellets and tablets, for example, for oral and other delivery routes, are presented and discussed utilizing melt extrusion. This book is the first of its kind that discusses extensively the well-developed science of extrusion technology as applied to pharmaceutical drug product development and manufacturing. By covering a wide range of relevant topics, the text brings together all technical information necessary to develop and market pharmaceutical dosage forms that meet current quality and regulatory requirements. As extrusion technology continues to be refined further, usage of extruder systems and the array of applications will continue to expand, but the core technologies will remain the same.

Melt

Melt
100 Amazing Adventures in Grilled Cheese

by Shane Sanford Kearns

  • Publisher : Simon and Schuster
  • Release : 2012-10-18
  • Pages : 160
  • ISBN : 1440542910
  • Language : En, Es, Fr & De
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A funked-up American classic Your favorite comfort food—grilled cheese—is going where no toasted sandwich has gone before. Gone are the boring days of white bread and yellow cheese. In their place are creativity and excess: griddled stacks dripping with hybrid cheeses, sandwiches oozing with surprising flavor combinations, and deep-fried desserts that reveal the standby's sweeter side. Inside this awesome book, you'll find 100 mouthwatering recipes, with twists on the traditional like: Crème Fraîche with Apple and Cucumber The Beer, Kale, and Crouton Mash-Up Inside-Out Blue Cheese Pecan The Candied Baconator Chocolate Brownie Indulgence Melt is one part gourmet, one part gluttony—and the only book you'll need to satisfy all your grilled cheese cravings!

Melt Rheology and Its Role in Plastics Processing

Melt Rheology and Its Role in Plastics Processing
Theory and Applications

by John M Dealy,K.F. Wissbrun

  • Publisher : Springer Science & Business Media
  • Release : 2012-12-06
  • Pages : 680
  • ISBN : 9400921632
  • Language : En, Es, Fr & De
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This book is designed to fulfill a dual role. On the one hand it provides a description of the rheological behavior of molten poly mers. On the other, it presents the role of rheology in melt processing operations. The account of rheology emphasises the underlying principles and presents results, but not detailed deriva tions of equations. The processing operations are described qualita tively, and wherever possible the role of rheology is discussed quantitatively. Little emphasis is given to non-rheological aspects of processes, for example, the design of machinery. The audience for which the book is intended is also dual in nature. It includes scientists and engineers whose work in the plastics industry requires some knowledge of aspects of rheology. Examples are the polymer synthetic chemist who is concerned with how a change in molecular weight will affect the melt viscosity and the extrusion engineer who needs to know the effects of a change in molecular weight distribution that might result from thermal degra dation. The audience also includes post-graduate students in polymer science and engineering who wish to acquire a more extensive background in rheology and perhaps become specialists in this area. Especially for the latter audience, references are given to more detailed accounts of specialized topics, such as constitutive relations and process simulations. Thus, the book could serve as a textbook for a graduate level course in polymer rheology, and it has been used for this purpose.

Melt Electrospinning

Melt Electrospinning
A Green Method to Produce Superfine Fibers

by Yong Liu,Seeram Ramakrishna,Mohamedazeem M. Mohideen,Kaili Li

  • Publisher : Academic Press
  • Release : 2019-08-09
  • Pages : 218
  • ISBN : 0128165979
  • Language : En, Es, Fr & De
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Melt Electrospinning: A Green Method to Produce Superfine Fibers introduces the latest results from a leading research group in this area, exploring the structure, equipment polymer properties and spinning conditions of melt electrospinning. Sections introduce the invention of melt electrospinning, including the independent development of centrifugal melt electrospinning and upward melt electrospinning, discuss electro magnetization of melt and the testing method of fiber performance by means of different polymers and self-designed devices, cover simulation, and introduce principle methods and improvement measures of centrifugal melt electrospinning. Presents melt electrospinning, a green nanofiber fabrication technology Introduces the invention of melt electrospinning, including centrifugal melt electrospinning and upward melt electrospinning Describes optimization techniques, electro magnetization of melt, testing methods, DPD simulation and improvement methods Provides a useful introduction to contemporary electrospinning research with a view to its many potential applications

Melt Processed High-Temperature Superconductors

Melt Processed High-Temperature Superconductors
A Book

by Masato Murakami

  • Publisher : World Scientific
  • Release : 1993-01-12
  • Pages : 380
  • ISBN : 9814505005
  • Language : En, Es, Fr & De
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The achievement of large critical currents is critical to the applications of high-temperature superconductors. Recent developments have shown that melt processing is suitable for producing high Jc oxide superconductors. Using magnetic forces between such high Jc oxide superconductors and magnets, a person could be levitated. This book has grown largely out of research works on melt processing of high-temperature superconductors conducted at ISTEC Superconductivity Research Laboratory. The chapters build on melt processing, microstructural characterization, fundamentals of flux pinning, critical current, and applications of bulk monolithic superconductors. The text also describes the basic mechanism of levitation and its application. This book will be useful for research workers, engineers, and graduate students in the field of superconductivity. List of Authors: H Fujimoto, S Gotoh, T Izumi; N Koshizuka, K Miya, M Murakami, N Nakamura, Y Nakamura, Y Shiohara, H Takaichi, T Taguchi, M Uesaka, H W Weber, K Yamaguchi. Contents: IntroductionPhase Diagram of the Y-Ba-Cu-O SystemMelt ProcessingCrystal GrowthMicrostructureMagnetic Properties I: DC MagnetizationMagnetic Properties II: AC MagnetizationMagneto-Optical ObservationCritical CurrentFlux Pinning IFlux Pinning II: Y2BaCuO5 InclusionFlux Pinning III: Fast Neutron IrradiationFlux Creep and Irreversibility LineLevitation and SuspensionFracture ToughnessApplication I: Levitation and SuspensionApplications II: Magnetic Bearing and FlywheelApplication III: Permanent MagnetAppendix: Electromagnetic Units Readership: Materials scientists, experimental physicists, chemists, ceramists and engineers. keywords:

Melt Water Retention Processes in Snow and Firn on Ice Sheets and Glaciers: Observations and Modeling

Melt Water Retention Processes in Snow and Firn on Ice Sheets and Glaciers: Observations and Modeling
A Book

by W. Tad Pfeffer,Jason E. Box,Robert S. Fausto,Horst Machguth

  • Publisher : Frontiers Media SA
  • Release : 2018-11-08
  • Pages : 129
  • ISBN : 2889456196
  • Language : En, Es, Fr & De
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Melt takes place where the surface of glaciers or ice sheets interacts with the atmosphere. While the processes governing surface melt are fairly well understood, the pathways of the meltwater, from its origin to the moment it leaves a glacier system, remain enigmatic. It is not even guaranteed that meltwater leaves a glacier or ice sheet. On Greenland, for example, only slightly more than 50% of the meltwater runs off. The remainder mostly refreezes within the so-called firn cover of the ice sheet. This eBook contains 11 studies which tackle the challenge of understanding meltwater retention in snow and firn from various angles. The studies focus both on mountain glaciers and on the Greenland ice sheet and address challenges such as measuring firn properties, quantifying their influence on meltwater retention, modelling firn processes and meltwater refreezing as well as unravelling the mechanisms within the recently discovered Greenland firn aquifers.

Snow Accumulation and Melt Along Borders of a Strip Cut in New Mexico

Snow Accumulation and Melt Along Borders of a Strip Cut in New Mexico
A Book

by Howard L. Gary

  • Publisher : Unknown Publisher
  • Release : 1974
  • Pages : 8
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Science and Technology of the Undercooled Melt

Science and Technology of the Undercooled Melt
Rapid Solidification Materials and Technologies

by P.R. Sahm,H. Jones,C.M. Adam

  • Publisher : Springer Science & Business Media
  • Release : 2012-12-06
  • Pages : 304
  • ISBN : 940094456X
  • Language : En, Es, Fr & De
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"SCIENCE AND TECHNOLOGY OF '!HE UNDEROLED MELT" This title was chosen as the topical headline of the Advanced Research Workshop (ARW) from March 17 to 22 1985, held at the Castle of Theuern. The usual term "Rapid Solidification" is an overlapping description. Due to the fact that nucleation is so eminently important for the undercooling of a melt and this, in turn, is an important characteristic of rapid solidifi cation, undercooling plays an essential role in "rapid solidification." The undercooled melt has caused an "accelerated evolution" (if not a revolution) in materials science during the last decade. Several rather exciting concepts with interesting potential for novel applications are being pursued presently in various laboratories and companies. They concern not only new processes and ha~ware developments, but also present chal lenging perspectives for ventures, including the founding of new companies; or they promise growth possibilities with established larger and smaller industrial establishments.

Fiber Crystal Growth from the Melt

Fiber Crystal Growth from the Melt
A Book

by Tsuguo Fukuda,Peter Rudolph,Satoshi Uda

  • Publisher : Springer Science & Business Media
  • Release : 2004-02-10
  • Pages : 281
  • ISBN : 9783540405962
  • Language : En, Es, Fr & De
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Fiber Crystal Growth from the Melt reviews the growth, modelling, characterization and application of single crystal fibers. Due to their very large length-to-diameter ratio together with perfect crystallographic structure and chemical homogeneity, such fibers have mechanical and physical properties that approach the theoretical values. Fukuda explains how their ultra-high strength enables their application as reinforcing agents in structural components. And he elucidates how and why fiber crystals are particularly well suited for wave guiding, tunable narrow-band filters and nonlinear optics and for the generation of green, blue and violet wavelenghts, and also as micro lasers and laser modulators.

A Review: Chill-Block Melt Spin Technique, Theories & Applications

A Review: Chill-Block Melt Spin Technique, Theories & Applications
A Book

by Mustafa Kamal,Usama S. Mohammad

  • Publisher : Bentham Science Publishers
  • Release : 2013-03-15
  • Pages : 192
  • ISBN : 160805151X
  • Language : En, Es, Fr & De
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Rapid Solidification Processing of molten metals and alloys has proved to be a reliable route for producing new and advanced materials. The Chill-Block Melt Spin (CBMS) technique is important because its simplicity, flexibility and perfection. High quality materials can be produced with lower costs, as compared to other routes, by refining the microstructure and trapping the nucleated (new) metastable phases. Melt-spun ribbons subsequently produced can then be consolidated to produce billets and sheets that can be used in many industries especially high-tech industries such as aerospace and racing automobiles. This book contains several perspectives about CBMS technology and should be a useful review for undergraduate and post-graduate metallurgy students.

Fluoroplastics, Volume 2: Melt Processible Fluoroplastics

Fluoroplastics, Volume 2: Melt Processible Fluoroplastics
The Definitive User's Guide

by Sina Ebnesajjad

  • Publisher : William Andrew
  • Release : 2002-10-30
  • Pages : 687
  • ISBN : 0815517289
  • Language : En, Es, Fr & De
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This is the second of a two volume series of books about fluoroplastics. Volume 1 covers the non-melt processible homopolymers, requiring non-traditional processing techniques. Volume 2 is devoted to the melt-processible fluoropolymers, their polymerization and fabrication techniques including injection molding, wire, tube, and film extrusion, rotational molding, blow molding, compression molding, and transfer molding. Both a source of data and a reference, the properties, characteristics, applications, safety, disposal, and recycling of melt-processible fluoropolymers are comprehensively detailed for immediate use by today's practicing engineering and scientists in the plastics industry. Students will benefit from the book's arrangement and extensive references.

MELT-I

MELT-I
A Simplified Meltdown Code for Fast Reactor Safety Analysis

by Alan Edward Waltar

  • Publisher : Unknown Publisher
  • Release : 1968
  • Pages : 156
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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MELT-I is a coupled neutronics - heat transfer code for use in estimating gross core behavior during major fast reactor excursions. The unique feature of the code is the treatment of positive reactivity feedbacks due to fuel collapse and sodium voiding. Althought the feedback models and the method of obtaining core temperatures are quite simplified, the ability of the code to couple the feedback terms to the driving function in the point kinetics equations allows oen to make reasonable estimates of core conditions just prior to the start of core disassembly. The core model consists of a maximum of 10 radial channels, 40 axial segments, and 8 radial fuel nodes plus a clad and a coolant node for reach pin. Running time, although highly problem dependent, is roughly three minutes for a representative case on a UNIVAC 1108. All programming is in FORTRAN-IV.

Melt dispersion and direct containment heating (DCH) experiments for KONVOI reactors

Melt dispersion and direct containment heating (DCH) experiments for KONVOI reactors
A Book

by Anonim

  • Publisher : KIT Scientific Publishing
  • Release : 2011
  • Pages : 129
  • ISBN : 3866445792
  • Language : En, Es, Fr & De
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Polymer Melt Rheology

Polymer Melt Rheology
A Guide for Industrial Practice

by F N Cogswell

  • Publisher : Elsevier
  • Release : 1981-01-01
  • Pages : 176
  • ISBN : 0857092987
  • Language : En, Es, Fr & De
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This book explores the ways in which melt flow behaviour can be exploited by the plastics engineer and technician for increased efficiency of processing operation, control of end product properties and selection and development of polymers for specific purposes. (reissued with minor corrections 1994)

Experimental Nickel-cobalt Recovery from Melt-refined Superalloy Scrap Anodes

Experimental Nickel-cobalt Recovery from Melt-refined Superalloy Scrap Anodes
A Book

by James L. Holman,L. A. Neumeier

  • Publisher : Unknown Publisher
  • Release : 1986
  • Pages : 17
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Hot Melt Adhesive Pad Surface Attachment Assembly Concept for On-orbit Operations

Hot Melt Adhesive Pad Surface Attachment Assembly Concept for On-orbit Operations
A Book

by D. J. Progar

  • Publisher : Unknown Publisher
  • Release : 1984
  • Pages : 78
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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