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Fiber Glass Reinforced Reaction Injection Molding

  • M. M. Girgis
  • B. Das
  • J. A. Harvey
Part of the Polymer Science and Technology book series (POLS, volume 18)

Abstract

Reaction injection molding is a fast “in situ” polymerization process which forms the desired polymer from its monomeric liquids. The process is characterized by the use of high-speed impingement to mix reactive monomers or prepolymers which rapidly polymerize in a heated mold under low pressure. The flow rate of two such reactive monomers, polyol and diisocyanate, must be measured and controlled to provide the proper stoichiometrical ratio for the resulting polyurethane. A schematic diagram of the RIM process is shown in Figure 1.1 The liquid reactant streams which are rapidly mixed in the mixhead are fed into a heated mold through a runner and react to form a solid part.

Keywords

Impact Strength Fiber Concentration Izod Impact Reactive Monomer Back Pressure Regulator 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1..
    Young, J., Autoproducts, June, 1975.Google Scholar
  2. 2.
    Zlochower, I. A., Das, B., and Hudson, H. J., “Fiber Glass/RIM Urethanes: Rheology vs. Reinforcement,” SPI Reinforced Plastics/ Composites Institute, 34th Annual Conference, 1979 (11-C).Google Scholar
  3. 3.
    Chiswall, B. C., and Thorpe, D., “RRIM — A Novel Approach Using Fibreglass,” SPI Reinforced Plastics/Composites Institute, 35th Annual Conference, 1980 (22-A).Google Scholar
  4. 4.
    Prepelka, D. J., “Newest Trends in RIM and RRIM — Raw Materials,” New Advances in RIM Seminar, Technomic Publishing Company, Pittsburgh, September, 1979.Google Scholar
  5. 5.
    Nelson, G. V., and Dabrowski, A. J., “Designing with RRIM,” SAE Technical Paper Series, No. 800513, Detroit, February, 1980.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • M. M. Girgis
    • 1
  • B. Das
    • 1
  • J. A. Harvey
    • 1
  1. 1.PPG Industries, Inc.Fiber Glass Research CenterPittsburghUSA

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