1993
DOI: 10.1177/073168449301201108
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Outgassing Phenomenon in Reaction Injection Molded Parts

Abstract: Three stages involved in the RIM process are impingement mixing of di isocyanate and polyol, filling and curing in the mold, and postcuring in a separate oven to achieve complete conversion of diisocyanate. Traces of water in the polyol react with diiso cyanate, and generate CO2 in a side reaction during mold filling and curing. It may not be possible to postcure the RIM part immediately after curing. During that period, known as floating time, moisture in ambient air reacts with residual diisocyanate generati… Show more

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