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Method Of Making A Cellulose Acetate Low Density Microcellular Foam
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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 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 Polymeric Foams Structure-Property-Performance by : Bernard Obi
Download or read book Polymeric Foams Structure-Property-Performance written by Bernard Obi and published by William Andrew. This book was released on 2017-12-07 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric Foams Structure–Property–Performance: A Design Guide is a response to the design challenges faced by engineers in a growing market with evolving standards, new regulations, and an ever-increasing variety of application types for polymeric foam. Bernard Obi, an author with wide experience in testing, characterizing, and applying polymer foams, approaches this emerging complexity with a practical design methodology that focuses on understanding the relationship between structure–properties of polymeric foams and their performance attributes. The book not only introduces the fundamentals of polymer and foam science and engineering, but also goes more in-depth, covering foam processing, properties, and uses for a variety of applications. By connecting the diverse technologies of polymer science to those from foam science, and by linking both micro- and macrostructure–property relationships to key performance attributes, the book gives engineers the information required to solve pressing design problems involving the use of polymeric foams and to optimize foam performance. With a focus on applications in the automotive and transportation industries, as well as uses of foams in structural composites for lightweight applications, the author provides numerous case studies and design examples of real-life industrial problems from various industries and their solutions. Provides the science and engineering fundamentals relevant for solving polymer foam application problems Offers an exceptionally practical methodology to tackle the increasing complexity of real-world design challenges faced by engineers working with foams Discusses numerous case studies and design examples, with a focus on automotive and transportation Utilizes a practical design methodology focused on understanding the relationship between structure-properties of polymeric foams and their performance attributes
Download or read book Polymeric Foams written by Shau-Tarng Lee and published by CRC Press. This book was released on 2016-11-03 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric foams are sturdy yet lightweight materials with applications across a variety of industries, from packaging to aerospace. As demand for these materials increase, so does innovation in the development of new processes and products. This book captures the most dynamic advances in processes, technologies, and products related to the polymeric foam market. It describes the latest business trends including new microcellular commercialization, sustainable foam products, and nanofoams. It also discusses novel processes, new and environmentally friendly blowing agents, and the development and usage of various types of foams, including bead and polycarbonate, polypropylene, polyetherimide microcellular, and nanocellular. The book also covers flame-retardant foams, rigid foam composites, and foam sandwich composites and details applications in structural engineering, electronics, and insulation. Authored by leading experts in the field, this book minimizes the gap between research and application in this important and growing area.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1978 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1980 with total page 1756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1979 with total page 736 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 1978 with total page 2456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 1978 with total page 2452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Medical Research Engineering written by and published by . This book was released on 1972 with total page 300 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 Abstract Bulletin of the Institute of Paper Chemistry by :
Download or read book Abstract Bulletin of the Institute of Paper Chemistry written by and published by . This book was released on 1979 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1980-01-14 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Practical Guide to Water-Blown Cellular Polymers by : Chris Defonseka
Download or read book Practical Guide to Water-Blown Cellular Polymers written by Chris Defonseka and published by Smithers Rapra. This book was released on 2016-05-10 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular polymers or foamed polymers are an important branch of plastics and are an essential part of daily life. Some of the major sectors of use are bedding, automotive, building construction, furniture, sound/thermal insulation, and packaging.Due to growing global concerns with regard to air pollution, research has led to the fascinating concept of using water as the sole blowing agent to create cellular foams as an alternative to traditional petroleum-based blowing agents (which contribute to air pollution). This strategy has created other possibilities of better and safer foams, and reduced costs are also considerable.With over 45 years of hands-on experience, the author provides in-depth knowledge of water-blown cellular polymers, from their chemistry to formulation and process methodology to produce quality foams. This exciting new phase of the polymer industry is presented in detail with regard to manufacture of standard foams as well as specialty foams. Such descriptions are based on new and emerging technologies, including the challenges and solutions foam producers must face with formulations as well as recommendations for machinery and equipment.This is a comprehensive presentation of all aspects of the technology required to produce water-blown cellular foams with different polymers to meet market demands. This book provides theoretical and practical information as well as guidance, and is an ideal source of information for libraries, students, teachers, foam producers and entrepreneurs.
Book Synopsis Procedure for Producing a Cylinder of Cellulose Acetate Foam Containing One Glass Microsphere by :
Download or read book Procedure for Producing a Cylinder of Cellulose Acetate Foam Containing One Glass Microsphere written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Res Mechanica written by and published by . This book was released on 1984 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
