Aging and Stabilization of Polymers - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Aging and Stabilization of Polymers write by M. B. Neiman. This book was released on 2012-12-06. Aging and Stabilization of Polymers available in PDF, EPUB and Kindle. The need for a broad development of the production of polymer ma terials has become evident. All these materials are subject to various types of aging (destruction); hence, stabilizers which permit the stor age, reprocessing, and use of polymer materials without any appreci able change in their properties must be introduced into them. In recent years, this problem of stabilizing polymers has attracted the attention of many scientists and technologists, both in the USSR and abroad. The scientific basis of the foreign studies will be found in a number of theo retical premises, but chiefly the theory of chain reactions with un branched chains. In the Soviet Union, the concepts of Academician N. N. Semenov on chain reactions with degenerate branches have become the starting point of theoretical studies of the stabilization and destruction of polymers. Soviet scientists have developed a theory of critical concentrations of antioxidants and have shown that the processes of stabilization have a very complex chemical character. The nature of the polymers them selves greatly affects these processes and consequently, different stabil izers are required for polymers of different structures. In addition, it has been shown that the antioxidants used thus far can not only cause chain termination, but can also initiate oxidation and give rise to de generate branches.
Macromolecules · 1
Macromolecules · 1 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Macromolecules · 1 write by H.G. Elias. This book was released on 2012-12-06. Macromolecules · 1 available in PDF, EPUB and Kindle. The second edition of this textbook is identical with its fourth German edi tion and it thus has the same goals: precise definition of basic phenomena, a broad survey of the whole field, integrated representation of chemistry, physics, and technology, and a balanced treatment of facts and comprehen sion. The book thus intends to bridge the gap between the often oversimpli fied introductory textbooks and the highly specialized texts and monographs that cover only parts of macromolecular science. The text intends to survey the whole field of macromolecular science. Its organization results from the following considerations. The chemical structure of macromolecular compounds should be inde pendent of the method of synthesis, at least in the ideal case. Part I is thus concerned with the chemical and physical structure of polymers. Properties depend on structure. Solution properties are thus discussed in Part 11, solid state properties in Part Ill. There are other reasons for dis cussing properties before synthesis: For example, it is difficult to understand equilibrium polymerization without knowledge of solution thermodynamics, the gel effect without knowledge of the glass transition temperature, etc. Part IV treats the principles of macromolecular syntheses and reactions.
Polymer Durability
Polymer Durability - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Polymer Durability write by Roger Lee Clough. This book was released on 1996. Polymer Durability available in PDF, EPUB and Kindle. Provides a comprehensive overview of the science of polymer durability. Discusses the molecular mechanisms of polymer aging and deterioration, emphasizing UV and thermal exposure environments. Describes a variety of analytical techniques for studying degradation, with special emphasis on chemiluminescence. Covers advances in the use of additives and other approaches for enhancing polymer stability. Reviews mechanisms and applications of major classes of stabilizers, and discusses the problem of stabilizer migration and loss. Examines new methods for predicting the aging rate and lifetime of a material.
The Effect of Long Term Thermal Exposure on Plastics and Elastomers
The Effect of Long Term Thermal Exposure on Plastics and Elastomers - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Effect of Long Term Thermal Exposure on Plastics and Elastomers write by Laurence W. McKeen. This book was released on 2013-11-20. The Effect of Long Term Thermal Exposure on Plastics and Elastomers available in PDF, EPUB and Kindle. This reference guide brings together a wide range of essential data on the effect of long term thermal exposure on plastics and elastomers, enabling engineers to make optimal material choices and design decisions. The data is supported by explanations of how to make use of the data in real-world engineering contexts. High heat environments are common in automotive, oil and gas, household appliances, coatings, space and aeronautics and many more end uses. As a result, thermal stability data are critically important to engineers designing parts particularly that replace metals, work that is common today as they look for ways to reduce weight. The data tables in this book enable engineers and scientists to select the right materials for a given product or application across a wide range of sectors. Several polymer classes are covered, including polyolefins, polyamides, polyesters, elastomers, fluoropolymers, biodegradable plastics and more, saving readers the need to contact suppliers. The book also includes introductory sections to provide background on plastic/polymer chemistry and formulation and plastic testing methods, providing the knowledge required to make best use of the data. Essential data and practical guidance for engineers and scientists working with plastics for use in high temperature environments Includes introductory chapters on polymer chemistry and its effect on thermal stability, providing the underpinning knowledge required to utilize the data Covers a wide range of commercial polymer classes, saving readers the need to contact suppliers
Accelerated Aging
Accelerated Aging - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Accelerated Aging write by Robert L. Feller. This book was released on 1995-03-02. Accelerated Aging available in PDF, EPUB and Kindle. Accelerated Aging: Photochemical and Thermal Aspects represents the culmination of more than 40 years of research by noted scientist Robert L. Feller. The book focuses on the long-term performance of materials such as wool, dyes, and organic compounds; their resistance to change when exposed to environmental factors such as oxygen, ozone, moisture, heat, and light; and their physical durability with handling and use over time. Processes of deterioration are discussed based on speeded-up laboratory studies designed to clarify the chemical reactions involved and their physical consequences.
