ポリウレタン反応射出成形における反応・熱解析

概要

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A rheometer with a wide-gap Couette geometry was developed to study reactive kinetics and rheological properties of the reactive polyurethane systems for a reaction injection molding (RIM). Viscosity and temperature changes during the adiabatic reactions were measured for three different polyurethane systems which had gelation times of a few seconds. The viscosity and temperature changes during the RIM process were predicted by a simple rheo-kinetic theory using the material parameters determined from the adiabatic measurements.<BR>A one-dimensional heat transfer analysis program of the RIM system was developed and the temperature profile in the urethan plate was calculated by the pre-determined material parameters. A good agreement was obtained between the measured temperature and the calculated one.
日本レオロジ-学会の論文