The change in temperature and conversion during the curing of a thermosetting resin in a slab‐shaped heated mold is analyzed theoretically. Results show that there is a critical value of β = AL 2 / k , for which the maximum center exotherm takes place ( A = Arrhenius pre‐exponential factor, L = slab thickness, k = thermal conductivity). Beyond this value, increasing β decreases the center exotherm. The temperature rise at the slab center may be substantially greater than under adiabatic conditions. Wall temperature has a great effect on the process behavior, implying the need of an adequate control system. A description of the temperature profiles and conversion rates is provided and some criteria for the process design are stated.
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Adabbo et al. (1979) studied this question.
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