2nd Edition

Castable Polyurethane Elastomers

By I.R. Clemitson Copyright 2015
    310 Pages
    by CRC Press

    310 Pages 52 B/W Illustrations
    by CRC Press

    Castable Polyurethane Elastomers is a practical guide to the production of castable polyurethane articles, from simple doorstops to complex items used in the military and nuclear industries. The book shows the progression from raw materials to prepolymer production, including the chemistry and functionality of the production processes. It provides a comprehensive look at various problem-solving and processing techniques, examining the selection of different types of systems on both the micro and macro levels. It also discusses curing and post-curing operations, conveying the importance of using the correct property for the application.

    Reorganized for better flow, this Second Edition:

    • Describes new methods in the processing of castable polyurethanes
    • Expands coverage of health and safety aspects
    • Brings all standards up to date

    Castable Polyurethane Elastomers, Second Edition explains the production of polyurethane components, filling the gap between pure chemistry and trade information.

    Preface
    About the Author
    Symbols and Acronyms
    Introduction to Polyurethanes
    Introduction to Polyurethanes
    Background
    History
    Chemistry of Polyurethanes
    Introduction
    Raw Materials
    Prepolymers
    Urea and Urethane Reactions
    Chain Extension
    Degradation
    References
    Health and Safety
    Health and Safety
    Introduction
    Workplace
    Prepolymer Preparation
    Engineering
    Safety Data Sheet Format
    References
    Processing
    Prepolymer Production
    Prepolymers
    Laboratory Preparation
    Commercial Preparation
    One-Shot System
    Quasiprepolymers
    References
    Processing Fundamentals
    Introduction
    Introduction to Molding Process
    Health and Safety Concerns during Casting
    Mold Preparation
    Batch Size Adjustment
    Prepolymer
    Pigments and Additives
    Curatives
    Degassing
    Mixing and Casting
    Curing and Post Curing
    Processing
    Molding Methods
    Bonding
    Finishing
    Plasticized Polyurethanes
    Epoxy Polyurethane Blends
    Cellular Polyurethane Elastomers
    Polyurethane Processing Problems
    Introduction
    Observed Problems with Potential Causes
    General Problem Solving
    Mold Design
    Bond Failure
    Properties
    Properties
    Introduction
    Physical Properties
    Environmental
    Electrical
    Radiation
    Chemical
    Wear
    References
    Applications
    Introduction
    Major Type and Grade Selection
    Polyurethane's Role in the Materials Field
    Polyurethane Selection Criteria
    Design
    Summary
    Tools for Evaluation
    Introduction
    Verification of Selected Grade
    Quality Control Tests
    Type Tests
    Prototype and Service Tests
    Investigative Research
    References
    Appendices
    Abbreviations and Trade Names
    Polyurethane Curatives
    Mold Release Agents
    Calculations
    Molecular Weight
    Equivalent Weight
    Equivalent Weight of Blends of Polyols or Curatives
    Weight Calculations
    Acid Levels
    Isocyanate Calculation
    Chemical Structures
    Glossary
    Index

    Biography

    I.R. Clemitson has worked in the chemical industry for 45 years. Predominantly, he worked in the polymer industry, both in production and development, concentrating on rubbers and polyurethanes. In 1999, he received a master’s degree from the University of Technology in Sydney, Australia. His thesis was titled "The Influence of Polyurethane Chemistry on Erosive Wear." During this time, he was working at the R and D laboratory of Warman International in Sydney, Australia doing research into polyurethanes and other elastomers. In the concluding years of his full-time work, he was employed in the development and manufacture of polyurethane elastomers and foams. He also gave lectures at the local training institute and to industry on aspects of polyurethane and rubber technology. He has authored two books on polyurethane elastomers, namely Castable Polyurethane Elastomers and Polyurethane Casting Primer.

    "Whether you are an experienced technologist or a beginner, this how-to book will serve as your bible. Castable polyurethane elastomers are an important and growing worldwide industry. The extent of the growth is due to constant improvements and innovations in both technology and manufacturing procedures. The reader will benefit from the logical sequence of polyurethane chemistry to the formulation of world-class castable elastomers."
    —Michael Szycher, Ph.D, President, Sterling Biomedical, Inc., Lynnfield, Massachusetts, USA

    "Written in simple language for hands-on practice. Provides details of processes and also solutions to problems. Safety and health is emphasized throughout the whole book."
    —Wei Min Huang, Nanyang Technological University, Singapore

    "Whether you are an experienced technologist or a beginner, this how-to book will serve as your bible. ... The reader will benefit from the logical sequence of polyurethane chemistry to the formulation of world-class castable elastomers."
    FAPU European Polyurethane Journal - July 2015