[PDF] High Temperature Elastomers Microform eBook

Author : John K. Gillham
Publisher :
Page : 17 pages
File Size : 34,95 MB
Release : 1972
Category :
ISBN :

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Nine poly(carborane-siloxane) high temperature elastomers which differ systematically in chemical structure were investigated by Torsional Braid Analysis. The structural variations include two different carborane cage structures in the polymer chain ( -CB10H10C- and -CB5H5C- ) and the step-wise increase in the number of -Si(CH3)2-O- linkages associated with each cage in the repeat unit. Polydimethyl-siloxane was studied as the compositional limit of both series. The dynamic mechanical relaxations (about 1 cps) of the materials are reported. These include the melting points of the semi-crystalline polymers, and the glass transitions and secondary transitions of all the polymers. The glass transition temperatures in each series were systematized using a well known copolymer composition versus glass transition temperature relationship. (Author).

Author : Laurence W. McKeen
Publisher : William Andrew
Page : 753 pages
File Size : 26,29 MB
Release : 2014-04-15
Category : Technology & Engineering
ISBN : 0323310176

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This reference guide brings together a wide range of critical data on the effect of temperature on plastics and elastomers, enabling engineers to make optimal material choices and design decisions. The effects of humidity level and strain rate on mechanical and electrical properties are also covered. The data are supported by explanations of how to make use of the data in real world engineering contexts.High (and low) temperatures can have a significant impact on plastics processing and applications, particularly in industries such as automotive, aerospace, oil and gas, packaging, and medical devices, where metals are increasingly being replaced by plastics. Additional plastics have also been included for polyesters, polyamides and others where available, including polyolefins, elastomers and fluoropolymers. Entirely new sections on biodegradable polymers and thermosets have been added to the book. The level of data included – along with the large number of graphs and tables for easy comparison – saves readers the need to contact suppliers, and the selection guide has been fully updated, giving assistance on the questions which engineers should be asking when specifying materials for any given application. Trustworthy, current thermal data and best practice guidance for engineers and materials scientists in the plastics industry More than 1,000 graphs and tables allow for easy comparison between plastics Entirely new sections added on biopolymers and thermosets

Author : Maya F. Bukhina
Publisher : BRILL
Page : 197 pages
File Size : 49,79 MB
Release : 2007-11
Category : Science
ISBN : 9004157204

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This book focuses on the effect the composition of rubbers and the conditions of their processing have on low-temperature resistance. It considers the nature and development of two physical processes, glass transition and crystallization, determining low-temperature behavior of elastomers. The book addresses the effects of deformation, pressure, and temperature on these processes. It discusses the contribution of different factors in frost-resistance of elastomeric materials and articles and the possibility of increasing frost-resistance by optimization of composition and design.