As elucidated in the article “Achieving savings in the post-curing process of fluoroelastomer compounds prepared by injection molding” by Rubber World, the post-curing process plays a crucial role in optimizing the physical and mechanical properties of rubber compounds based on FKM elastomers. This process aids in enhancing properties such as compression set and tensile strength, ensuring the attainment of superior and stable characteristics.

Two-Stage Cure Process: The post-curing process typically involves two stages: curing and post-cure. The curing stage occurs during the injection molding process under pressure, while the post-cure stage takes place in an oven under specific atmospheric conditions, completing crosslinking reactions and removing volatile by-products and additives.

Considerations in Post-Cure: It’s essential to consider the volatilization of process aids like carnauba wax during the post-cure cycle. Moreover, caution must be exercised to avoid placing FKM parts in the post-cure oven with parts made from different elastomers, as chemical interactions may occur, potentially causing damage. The duration and temperature of the post-cure stage vary depending on factors such as compound formulation, cure system type, and required specifications.

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