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Low Density Microcellular Foam And Method Of Making Same
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Book Synopsis Low-density Microcellular Foam and Method of Making Same by :
Download or read book Low-density Microcellular Foam and Method of Making Same written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-density microcellular foam having a cell size of not greater than 2 .mu.m and method of making by dissolving cellulose acetate in an acetone-based solvent, gelling the solution in a water bath maintained at 0.degree.-10.degree. C for a selected period of time to allow impurities to diffuse out, freezing the gel, and then freeze-drying wherein water and solvents sublime and the gel structure solidifies into low-density microcellular foam. The foam has a density of 0.065 to 0.6.times. 10.sup. 3 kg/m.sup. 3 and cell size of about 0.3 to 2 .mu.m. The small cell size foam is particularly applicable for encapsulation of laser targets.
Book Synopsis Method of Making a Cellulose Acetate Low Density Microcellular Foam by :
Download or read book Method of Making a Cellulose Acetate Low Density Microcellular Foam written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-density microcellular foam having a cell size of not greater than 2 .mu.m and method of making by dissolving cellulose acetate in an acetone-based solvent, gelling the solution in a water bath maintained at 0-10.degree. C for a selected period of time to allow impurities to diffuse out, freezing the gel, and then freeze-drying wherein water and solvents sublime and the gel structure solidifies into low-density microcellular foam. The foam has a density of 0.065 to 0.6.times. 10.sup. 3 kg/m.sup. 3 and cell size of about 0.3 to 2 .mu.m. The small cell size foam is particularly adaptable for encapsulation of laser targets.
Book Synopsis Ultra-low Density Microcellular Polymer Foam and Method by :
Download or read book Ultra-low Density Microcellular Polymer Foam and Method written by and published by . This book was released on 1995 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: An ultra-low density, microcellular open-celled polymer foam and a method for making such foam are disclosed. A polymer is dissolved in a heated solution consisting essentially of at least one solvent for the dissolution of the polymer in the heated solution and the phase inversion of the dissolved polymer to a liquid gel upon sufficient cooling of the heated solution. The heated solution is contained in a containment means provided with a nucleating promoting means having a relatively rough surface formed of fixed nucleating sites. The heated solution is cooled for a period of time sufficient to form a liquid gel of the polymer by phase inversion. From the gel, a porous foam having a density of less than about 12.0 mg/cm3 and open porosity provided by well interconnected strut morphology is formed. These foams can be used for ICF targets.
Book Synopsis Low Density, Microcellular Foams, Preparation, and Articles by :
Download or read book Low Density, Microcellular Foams, Preparation, and Articles written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A microcellular low density foam of poly(4-methyl-1-pentene) which is particularly useful for forming targets for inertial confinement fusion has been developed. Articles made from the foam have been machined to tolerances of 0.0001 inch, although the densities of the fragile foam are low (about 10 to about 100 mg/cc) and the cell sizes are small (about 10 to about 30 .mu.m). Methods for forming the foam and articles are given; and the yield strength of the foam of the invention is higher than was obtained in other structures of this same material.
Book Synopsis Complex Macromolecular Systems I by : Axel H. E. Müller
Download or read book Complex Macromolecular Systems I written by Axel H. E. Müller and published by Springer Science & Business Media. This book was released on 2010-05-20 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: -Effects of Electric Fields on Block Copolymer Nanostructures By H. G. Schoberth, V. Olszowka, K. Schmidt, and A. Böker -Nanopattern Evolution in Block Copolymer Films: Experiment, Simulations and Challenges By L. Tsarkova, G.J. Agur Sevink, and G. Krausch -Controlled Wrinkling as a Novel Method for the Fabrication of Patterned Surfaces By A. Schweikart, A. Horn, A. Böker, and A. Fery -Layered Systems Under Shear Flow By D. Svenšek and H. R. Brand -Thermal Diffusion in Polymer Blends: Criticality and Pattern Formation By W. Köhler, A. Krekhov, and W. Zimmermann -Foaming of Microstructured and Nanostructured Polymer Blends By H. Ruckdäschel, P. Gutmann, V. Altstädt, H. Schmalz, and A.H.E. Müller
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-02 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index of Patents Issued from the United States Patent Office by :
Download or read book Index of Patents Issued from the United States Patent Office written by and published by . This book was released on 1974 with total page 2408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Preparing and Characterizing Low Density Pan-carbon Microcellular Foam by :
Download or read book Advances in Preparing and Characterizing Low Density Pan-carbon Microcellular Foam written by and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents an improved preparation of low density microcellular carbon as well as characterization of spatial homogeneity. The report also documents the process for preparing the nficrocellular carbon from poly(acrylonitrile) raw material. A microcellular polymer precursor (0.025 g/cc) is first prepared via a solution-based process and then pyrolyzed to produce the microcellular carbon in a monolithic form (0.05 g/cc). The process improvement developed in this study permits the pore structure of the n-ficrocellular polymer precursor and the microcellular carbon to be reproduced consistently in different laboratories. Pore structure is affected by the completeness of dissolution of the polymer raw material, which variable can be adjusted via dissolution temperature or particle size of the raw material. The second topic in this report involves determining the spatial fluctuation in mass density caused by periodic, millimeter-scale bands, known as 'tree rings' visible on machined surfaces of the carbon monoliths. To measure the fluctuations, we developed a high precision, spatially resolved X-ray transmission technique. The periodic bands caused less than "2% variation of mass density in a microcellular carbon having average density 0.041 g/cc.
Book Synopsis Official Gazette of the United States Patent and Trademark Office by :
Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1996 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low Density Microcellular Foams by :
Download or read book Low Density Microcellular Foams written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Disclosed is a process of producing microcellular foam which comprises the steps of: (a) selecting a multifunctional epoxy oligomer resin; (b) mixing said epoxy resin with a non-reactive diluent to form a resin-diluent mixture; (c) forming a diluent containing cross-linked epoxy gel from said resin-diluent mixture; (d) replacing said diluent with a solvent therefore; (e) replacing said solvent with liquid carbon dioxide; and (f) vaporizing off said liquid carbon dioxide under supercritical conditions, whereby a foam having a density in the range of 35-150 mg/cc and cell diameters less than about 1 .mu.m is produced. Also disclosed are the foams produced by the process.
Download or read book Federal Register written by and published by . This book was released on 1977-12 with total page 1692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index of Patents Issued from the United States Patent and Trademark Office by :
Download or read book Index of Patents Issued from the United States Patent and Trademark Office written by and published by . This book was released on 1988 with total page 1452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strategies for Producing Microcellular Low Density Foams from Polyolefin Materials by : Robert P. Lee
Download or read book Strategies for Producing Microcellular Low Density Foams from Polyolefin Materials written by Robert P. Lee and published by . This book was released on 2003 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microcellular Injection Molding by : Jingyi Xu
Download or read book Microcellular Injection Molding written by Jingyi Xu and published by John Wiley & Sons. This book was released on 2011-01-06 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most important aspects of microcellular injection molding with applications for science and industry. The book includes: experimental rheology and pressure-volume-temperature (PVT) data for different gas materials at real injection molding conditions, new mathematical models, micrographs of rheological and thermodynamic phenomena, and the morphologies of microcellular foam made by injection molding. Further, the author proposes two stages of processing for microcellular injection molding, along with a methodology of systematic analysis for process optimization. This gives critical guidelines for quality and quantity analyses for processing and equipment design.
Download or read book Polymeric Foams written by S.-T. Lee and published by CRC Press. This book was released on 2022-05-18 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric Foams: Innovations in Technologies and Environmentally Friendly Materials offers the latest in technology and environmental innovations within the field of polymeric foams. It outlines how application-focused research in polymeric foam can continue to improve living quality and enhance social responsibility. This book: Addresses technological innovations including those in bead foams, foam injection molding, foams in tissue engineering, foams in insulation, and silicon rubber foam Discusses environmentally friendly innovations in PET foam, degradable and renewable foam, and physical blowing agents Describes principles as well as applications from internationally recognized foam experts This work is aimed at researchers and industry professionals across chemical, mechanical, materials, polymer engineering, and anyone else developing and applying these advanced polymeric materials.
Book Synopsis Wood-Polymer Composites by : K O Niska
Download or read book Wood-Polymer Composites written by K O Niska and published by Elsevier. This book was released on 2008-05-29 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood-polymer composites (WPC) are materials in which wood is impregnated with monomers that are then polymerised in the wood to tailor the material for special applications. The resulting properties of these materials, from lightness and enhanced mechanical properties to greater sustainability, has meant a growing number of applications in such areas as building, construction and automotive engineering. This important book reviews the manufacture of wood-polymer composites, how their properties can be assessed and improved and their range of uses.After an introductory chapter, the book reviews key aspects of manufacture, including raw materials, manufacturing technologies and interactions between wood and synthetic polymers. Building on this foundation, the following group of chapters discusses mechanical and other properties such as durability, creep behaviour and processing performance. The book concludes by looking at orientated wood-polymer composites, wood-polymer composite foams, at ways of assessing performance and at the range of current and future applications.With its distinguished editors and international team of contributors, Wood-polymer composites is a valuable reference for all those using and studying these important materials. Provides a comprehensive survey of major new developments in wood-polymer composites Reviews the key aspects of manufacture, including raw materials and manufacturing technologies Discusses properties such as durability, creep behaviour and processing performance
Book Synopsis Official Gazette of the United States Patent Office by : United States. Patent Office
Download or read book Official Gazette of the United States Patent Office written by United States. Patent Office and published by . This book was released on 1974 with total page 2752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
