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Simulation of the effect of variation in the cooling cycle on the state of cure in a rubber component
The distribution of state of cure in a molded rubber component is usually nonuniform
due to slow heat transfer processes involved in the molding/cooling cycle. In certain
molding processes, the cure accumulated during the cooling process that occurs after a
molding cycle can be a significant part of the total. In this work, prior simulation of the
state of cure profile developed in a one-dimensional rectangular geometry is extended to
consider the effect of the cooling conditions on the distribution of the state of cure. In
addition, the effect of manufacturing process variation on the resulting state of cure distribution
and the viability of the molding process is examined. Recommendations are
made to minimize the effect of variation in process conditions.
Keywords Elastomer, molding, cure, vulcanization, molding cycle, cooling
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