Published January 1, 1993
by CRC .
Written in English
|The Physical Object|
|Number of Pages||313|
Polyurethane chemistry is of great significance in many applications worldwide. Moreover, their development potential has yet to be exhausted by any means. New applications are being constantly identified and the product range will be further development. This is a completely updated version of the book Polyurethanes for Coatings published in /5(1). The latter half of the book focuses on polyurethane foams, the largest segment of the polyisocyanate-based foam industry. It contains a fully updated description of the chemistry, raw materials, manufacturing, formulations, analyses, and testing involved in producing a wide variety of progressive applications, including building materials. Increasing amount of polyurethane foams waste (e.g. from the building or furniture industry) produced every year resulted in the intensive development of their recycling methods. This chapter covers most important mechanical recycling methods, i.e. regrinding, rebonding, adhesive pressing, and molding. Polyurethane types, synthesis and applications the PU industry in , with PU produced through the reaction. between diisocyanate and polyester diol. 2,3.
industry were laid in the late s with the discovery, by Otto Bayer, of the chemistry of the polyaddition reaction between diisocyanate and diols to form polyurethane. The first commercial applications of polyurethane polymers, for millable elastomers, coatings and . role in the textile industry, both from the point of view of government regulation and consumer expectationsPrinciples and applications of electromagnetic fields, Robert Plonsey, Robert E. Collin, , Science, pages download Polyurethane Handbook: Chemistry, Raw Materials. Polyurethane Products $ 41, $ $52, Polyurethane foam products* $ 34, $ $46, Adhesives, sealants, coatings, and fibers $ 7, $ $76, Total Polyurethane Industry $ 48, $ $57, Upstream Polyurethane Supplier Economic Impact in the United States. A shoe sole, for example, may be 'blown' to double the volume of solid polymer. This process is so versatile that the expansion can be taken much further. In low-density foams for upholstery or thermal insulation less than 3% of the total volume is polyurethane. The gas has expanded the original volume occupied by the liquid by 30 to 40 times.
2 table of contents executive summary 3 1. introduction 5 2. design, execution 7 3. outcomes 9 general information 9 equipment development and evaluation 11 system development and evaluation 12 4. conclusions 15 pre-blended cyclo-pentane 15 pre-blended normal-pentane 15 directly injected hydrocarbons 15 attachments China is a major producer of the rigid polyurethane foams involved and the EIA calculates that if the illegal use of CFC is pervasive in the 3, small- . Energy absorbing polyurethane foams began being used in automobiles for passenger safety. s. Thin wall medical hoses (i.e. catheters) are made with polyurethane. CFCs no longer added to polyurethane products and are replaced by alternative substances (hydrocarbons, HCFCs, CO2, etc.) that are environmentally-friendly. s. Handbook for Reducing and Eliminating Chlorof lourocarbons in Flexible Polyurethane Foams April PREFACE v CHAPTER ONE: INTRODUCTION 1 Background 1 Ozone-Depleting Substances 1 Regulatory Action 2 The Flexible Polyurethane Foam Industry 3 CHAPTER TWO: PROCESS CHARACTERISTICS 5 Methods of Manufacturing 5 Basic Chemistry and Foam .