DESIGN AND CHARACTERIZATION OF A SMALL REACTION INJECTION MOLDING MACHINE.

L. J. Lee, Chris Macosko

Research output: Contribution to conferencePaperpeer-review

16 Scopus citations

Abstract

A small scale reaction injection molding (RIM) machine has been designed. It can be used for different reactants with quite a wide range of viscosities. This device has continuous variation of stoichiometric ratio and a self-cleaning impingement mixhead. Reactant circulation can be achieved by the machine itself without external pumps. Construction is simple and modular to allow a wide range of sizes at relatively low cost. The mold can be attached to the mixhead. Controls are described which provide both manual and automatic operation. Stoichiometric control was found to be reproducible and accurate. Approximate design equations are presented and tested for flow rate versus pressure drop. Mixing quality was evaluated by adiabatic temperature rise. A nozzle Reynolds number criteria for good mixing was established.

Original languageEnglish (US)
Pages151-154
Number of pages4
StatePublished - Jan 1 1978
EventSPE Annu Tech Conf, 36th, Pap - Washington, DC, USA
Duration: Apr 24 1978Apr 27 1978

Other

OtherSPE Annu Tech Conf, 36th, Pap
CityWashington, DC, USA
Period4/24/784/27/78

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