Factors Affecting the Quality of Impingement Mixed RIM Urethanes 770839
Reaction injection molding of polyurethanes has become an established means of producing highly configured exterior automotive parts. As such, precautions must be taken to assure that RIM urethanes are consistently well mixed, Mixing quality affects cosmetic appearance, physical properties, and performance in the field.
The processing variables for six RIM systems are analyzed and quantified. A procedure to minimize machine set-up time and assure good mixing is given. Three areas are considered-- metering, primary mixing in the mixing chamber, and secondary mixing in the static aftermixer.
Citation: Fruzzetti, R., Hogan, J., Murray, F., and White, J., "Factors Affecting the Quality of Impingement Mixed RIM Urethanes," SAE Technical Paper 770839, 1977, https://doi.org/10.4271/770839. Download Citation
Author(s):
R. E. Fruzzetti, J. M. Hogan, F. J. Murray, J.R. White
Affiliated:
Goodyear Tire and Rubber Co.
Pages: 9
Event:
Passenger Car Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1977 Transactions-V86-A
Related Topics:
Parts
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